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1

Advanced Cathode Catalysts  

Energy.gov (U.S. Department of Energy (DOE))

This presentation, which focuses on advanced cathode catalysts, was given by Piotr Zelenay of Los Alamos National laboratory at a February 2007 meeting on new fuel cell projects.

2

Advanced Cathode Catalysts  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

new catalysts, this research program will also target other issues crucial to PEMFC cathode electrocatalysis: novel electrode structures; catalyst durability meeting the...

3

The Linac Injector For The ANL 7 Ge V Advanced Photon Source  

NLE Websites -- All DOE Office Websites (Extended Search)

Injector For The ANL 7 Ge V Injector For The ANL 7 Ge V Advanced Photon Source A. Nassiri, W. Wesolowski, and G. Mavrogenes Argonne National Laboratory Submitted to the 1990 LINAC Conferece Albuquerque, New Mexico LS-154 9/28/90 TEE LINAC INJECTOR FOR TEE ANL 7 G<.iJ,V ADVANCED PHOTON SOORCE* A. Nassiri, W. Wesolowski, and G. Mavrogenes Argonne National Laboratory 9700 South Cass Avenue Argonne, IL 60439 USA Abstract The Argonne Advanced Photon Source (APS) linac system consists of a 200 MeV electron linac, a positron converter, and a 450 MeV positron linac. Design parameters and computer simulations of the two linac systems are presented. Introduction The Argonne Advanced Photon Source is a 7 GeV synchrotron X-Ray facility. The APS machine parameters have been described.

4

Advanced Cathode Catalysts and Supports for PEM Fuel Cells |...  

Energy Savers (EERE)

Advanced Cathode Catalysts and Supports for PEM Fuel Cells Advanced Cathode Catalysts and Supports for PEM Fuel Cells 2012 DOE Hydrogen and Fuel Cells Program and Vehicle...

5

Advanced Cathode Catalysts and Supports for  

E-Print Network (OSTI)

;3 Objectives: Development of a durable, low cost, high performance cathode electrode (catalyst and support and Approach Approach: Development of advanced cathode catalysts and supports based on 3M's nanostructured thin Review (6/8/10) Water management for cool/wet transient operation (Task 5.2) Developed key strategy

6

High Temperature Membrane & Advanced Cathode Catalyst Development  

SciTech Connect

Current project consisted of three main phases and eighteen milestones. Short description of each phase is given below. Table 1 lists program milestones. Phase 1--High Temperature Membrane and Advanced Catalyst Development. New polymers and advanced cathode catalysts were synthesized. The membranes and the catalysts were characterized and compared against specifications that are based on DOE program requirements. The best-in-class membranes and catalysts were downselected for phase 2. Phase 2--Catalyst Coated Membrane (CCM) Fabrication and Testing. Laboratory scale catalyst coated membranes (CCMs) were fabricated and tested using the down-selected membranes and catalysts. The catalysts and high temperature membrane CCMs were tested and optimized. Phase 3--Multi-cell stack fabrication. Full-size CCMs with the down-selected and optimized high temperature membrane and catalyst were fabricated. The catalyst membrane assemblies were tested in full size cells and multi-cell stack.

Protsailo, Lesia

2006-04-20T23:59:59.000Z

7

Advanced Cathode Catalysts and Supports for PEM Fuel Cells  

Energy.gov (U.S. Department of Energy (DOE))

This presentation, which focuses on advanced cathode catalysts and supports for PEM fuel cells, was given by Mark Debe of 3M at a February 2007 meeting on new fuel cell projects.

8

ANL/APS/TB-44, Guidelines for Beamline and Front-End Radiation Shielding Design at the Advanced Photon Source  

NLE Websites -- All DOE Office Websites (Extended Search)

APS/TB-44 Rev. 4 APS/TB-44 Rev. 4 Guidelines for Beamline and Front-End Radiation Shielding Design at the Advanced Photon Source Revision 4 Advanced Photon Source About Argonne National Laboratory Argonne is a U.S. Department of Energy laboratory managed by UChicago Argonne, LLC under contract DE-AC02-06CH11357. The Laboratory's main facility is outside Chicago, at 9700 South Cass Avenue, Argonne, Illinois 60439. For information about Argonne and its pioneering science and technology programs, see www.anl.gov. Availability of This Report This report is available, at no cost, at http://www.osti.gov/bridge. It is also available on paper to the U.S. Department of Energy and its contractors, for a processing fee, from: U.S. Department of Energy Office of Scientific and Technical Information

9

Advanced cathode material for high power applications.  

SciTech Connect

In our efforts to develop low cost high-power Li-ion batteries with excellent safety, as well as long cycle and calendar life, lithium manganese oxide spinel and layered lithium nickel cobalt manganese oxide cathode materials were investigated. Our studies with the graphite/LiPF{sub 6}/spinel cells indicated a very significant degradation of capacity with cycling at 55 C. This degradation was caused by the reduction of manganese ions on the graphite surface which resulted in a significant increase of the charge-transfer impedance at the anode/electrolyte interface. To improve the stability of the spinel, we investigated an alternative salt that would not generate HF acid that may attack the spinel. The alternative salt we selected for this work was lithium bisoxalatoborate, LiB(C{sub 2}O{sub 4}){sub 2} ('LiBoB'). In this case, the graphite/LiBoB/spinel Li-ion cells exhibited much improved cycle/calendar life at 55 C and better abuse tolerance, as well as excellent power. A second system based on LiNi{sub 1/3}Co{sub 1/3}Mn{sub 1/3}O{sub 2} layered material was also investigated and its performance was compared to commercial LiNi{sub 0.8}Co{sub 0.15}Al{sub 0.05}O{sub 2}. Cells based on LiNi{sub 1/3}Co{sub 1/3}Mn{sub 1/3}O{sub 2} showed lower power fade and better thermal safety than the LiNi{sub 0.8}Co{sub 0.15}Al{sub 0.05}O{sub 2}-based commercial cells under similar test conditions. Li-ion cells based on the material with excess lithium (Li{sub 1.1}Ni{sub 1/3}Co{sub 1/3}Mn{sub 1/3}O{sub 2}) exhibited excellent power performance that exceeded the FreedomCAR requirements.

Amine, K.; Belharouak, I.; Kang, S. H.; Liu, J.; Vissers, D.; Henriksen, G.; Chemical Engineering

2005-01-01T23:59:59.000Z

10

ANL/APS/TB-16 ADVANCED PHOTON SOURCE ACCELERATOR ULTRAHIGH VACUUM GUIDE  

NLE Websites -- All DOE Office Websites (Extended Search)

6 6 ADVANCED PHOTON SOURCE ACCELERATOR ULTRAHIGH VACUUM GUIDE Chian Liu and John Noonan CONTENTS 1. Ultrahigh Vacuum Overview ............................................................................... 1 1.1 Vacuum ..................................................................................................... 1 1.2 Sources of Residual Gas ........................................................................... 2 1.3 Material Selections in Ultrahigh Vacuum ................................................. 9 1.4 Pumps and Pumping Processes ................................................................. 11 1.5 Common Sense in Ultrahigh Vacuum Related Work ................................ 15 1.6 Vacuum Safety Issues ...............................................................................

11

Advanced Cathode Catalysts and Supports for PEM Fuel Cells  

NLE Websites -- All DOE Office Websites (Extended Search)

Cathode Catalysts and Cathode Catalysts and Supports for PEM Fuel Cells DE-FG36-07GO17007 Mark K. Debe 3M Company Feb. 13, 2007 2007 DOE HFCIT Kick-off Meeting This presentation does not contain any proprietary or confidential information Overview Advanced Cathode Catalysts and Supports for PEM FC's - 2007 DOE HFCIT Kick-off, Feb. 13-14, 2007 2 3 Barriers A. Electrode and MEA Durability B. Stack Material & Mfg Cost C. Electrode and MEA Performance DOE Technical Targets Electrocatalyst (2010, 2015) * Durability w/cycling: hrs < 80 o C - (5000, 5000) > 80 o C - (2000, 5000) * Cost: $/kW (5,4) * Mass activity: A/mg ( 0.44, 0.44) * PGM Total, g/ kW rated: (0.3, 0.2) MEA (2010, 2015) * Cost: $/kW (10,5) * Performance: W/cm 2 at Rated Pwr. (1,1) ; 0.8V (0.25, 0.25) Budget * Total Project funding $10.43MM

12

Cathodes  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

100- 120 mAhg at a 0.08 mAg rate. Autogenic reactions to be pursued further in the search for advanced electrode materials and architectures 16 3. Simulation of Atomic...

13

APS, CNM, ANL to Receive $3M for Fuel Cell Research  

NLE Websites -- All DOE Office Websites (Extended Search)

APS, CNM, ANL to Receive $3M for Fuel Cell Research APS, CNM, ANL to Receive $3M for Fuel Cell Research The funding, from the U.S. Department of Energy's Office of Basic Energy Sciences, will be used to study the molecular basis of catalysis, with a particular interest in the oxygen reduction reaction in fuel cells. "We are looking to understand the behavior of oxygen in the low-temperature fuel cell cathodes," said Hoydoo You, leader of the group project. "The project builds on Argonne's scientific strengths, bringing collaboration between physicists and chemists, between theorists and experimentalists." The high-intensity X-rays from the Advanced Photon Source and nanoscale science at the Center for Nanoscale Materials are key enabling resources. The project includes researchers from Argonne's Materials Science,

14

Nanostructured material for advanced energy storage : magnesium battery cathode development.  

SciTech Connect

Magnesium batteries are alternatives to the use of lithium ion and nickel metal hydride secondary batteries due to magnesium's abundance, safety of operation, and lower toxicity of disposal. The divalency of the magnesium ion and its chemistry poses some difficulties for its general and industrial use. This work developed a continuous and fibrous nanoscale network of the cathode material through the use of electrospinning with the goal of enhancing performance and reactivity of the battery. The system was characterized and preliminary tests were performed on the constructed battery cells. We were successful in building and testing a series of electrochemical systems that demonstrated good cyclability maintaining 60-70% of discharge capacity after more than 50 charge-discharge cycles.

Sigmund, Wolfgang M. (University of Florida, Gainesville, FL); Woan, Karran V. (University of Florida, Gainesville, FL); Bell, Nelson Simmons

2010-11-01T23:59:59.000Z

15

Prospects for vitrification of mixed wastes at ANL-E  

SciTech Connect

This report summarizes a study evaluating the prospects for vitrification of some of the mixed wastes at ANL-E. This project can be justified on the following basis: Some of ANL-E`s mixed waste streams will be stabilized such that they can be treated as a low-level radioactive waste. The expected volume reduction that results during vitrification will significantly reduce the overall waste volume requiring disposal. Mixed-waste disposal options currently used by ANL-E may not be permissible in the near future without treatment technologies such as vitrification.

Mazer, J.; No, Hyo

1993-12-01T23:59:59.000Z

16

Recent advances in cathode electrocatalysts for PEM fuel cells  

Science Journals Connector (OSTI)

Great progress has been made in the past two decades in the development of the electrocatalysts for proton exchange membrane fuel cells (PEMFCs). This review article is focused on recent advances made in the k...

Junliang Zhang

2011-06-01T23:59:59.000Z

17

ANL-678A  

NLE Websites -- All DOE Office Websites (Extended Search)

Division: Division: Equipment Name: Multiple Single Manufacturer: Model Number: Building Room Serial Number: ANL Property Number: Label Number: Indoor Use Only Damp/Wet Locations Hazardous/Classified Locations This equipment is approved for installation or use at ANL. This equipment is rejected for use at ANL. (See comments above) Inspection Date: Inspector (Name): Inspector (Signed) Reputable Manufacturer Unlisted Electrical Equipment Approval Form For use at Argonne National Laboratory Use the following factors when evaluating equipment [NEC 110-3]. Unlisted equipment that is determined to be safe to operate will have a tracking sticker attached for identification. Equipment that does not pass this evaluation will have a REJECTED sticker attached. NOTE: APPROVED EQUIPMENT SHALL BE INSTALLED AND USED IN ACCORDANCE

18

ANL-E Health Physics experience with D and D  

SciTech Connect

The Argonne National Laboratory--East (ANL-E) Health Physics Section provides direct and/or oversight support to various D&D projects at ANL-E. The health physics problems encountered have been challenging, primarily because they involved the potential for high internal exposures as well as actual high external exposures. The lessons learned are applicable to other radiological facilities. A number of D&D projects being conducted concurrently at ANL-E are described. The problems encountered are then categorized, and lessons learned and recommendations are provided. The main focus will be limited to the support and technical assistance provided by personnel from the ANL Health Physics Section during the course of the work activities.

Baker, S.I.; Mosho, G.D.; Munyon, W.J.; Murdoch, B.T.; Sholeen, C.M.; Shuman, J.P.

1996-04-01T23:59:59.000Z

19

ANL-678A  

NLE Websites -- All DOE Office Websites (Extended Search)

Label Number: Label Number: Indoor Use Only Damp/Wet Locations Hazardous/Classified Locations This equipment is approved for installation or use at ANL. This equipment is rejected for use at ANL. (See comments above) Inspection Date: Inspector (Name): Inspector (Signed) Facility Electrical Equipment Approval Form For use at Argonne National Laboratory Use the following factors when evaluating equipment [NEC 110-3]. Unlisted equipment that is determined to be safe to operate will have a tracking sticker attached for identification. Equipment that does not pass this evaluation will have a REJECTED sticker attached. NOTE: APPROVED EQUIPMENT SHALL BE INSTALLED AND USED IN ACCORDANCE WITH THE INSTRUCTIONS PROVIDED BY THE DESIGNER/BUILDER. 1. Suitability for installation and use in conformity with the provisions of the NEC, including properly

20

Phase III Advanced Anodes and Cathodes Utilized in Energy Efficient Aluminum Production Cells  

SciTech Connect

During Phase I of the present program, Alcoa developed a commercial cell concept that has been estimated to save 30% of the energy required for aluminum smelting. Phase ii involved the construction of a pilot facility and operation of two pilots. Phase iii of the Advanced Anodes and Cathodes Program was aimed at bench experiments to permit the resolution of certain questions to be followed by three pilot cells. All of the milestones related to materials, in particular metal purity, were attained with distinct improvements over work in previous phases of the program. NiO additions to the ceramic phase and Ag additions to the Cu metal phase of the cermet improved corrosion resistance sufficiently that the bench scale pencil anodes met the purity milestones. Some excellent metal purity results have been obtained with anodes of the following composition: Further improvements in anode material composition appear to be dependent on a better understanding of oxide solubilities in molten cryolite. For that reason, work was commissioned with an outside consultant to model the MeO - cryolite systems. That work has led to a better understanding of which oxides can be used to substitute into the NiO-Fe2O3 ceramic phase to stabilize the ferrites and reduce their solubility in molten cryolite. An extensive number of vertical plate bench electrolysis cells were run to try to find conditions where high current efficiencies could be attained. TiB2-G plates were very inconsistent and led to poor wetting and drainage. Pure TiB2 did produce good current efficiencies at small overlaps (shadowing) between the anodes and cathodes. This bench work with vertical plate anodes and cathodes reinforced the importance of good cathode wetting to attain high current efficiencies. Because of those conclusions, new wetting work was commissioned and became a major component of the research during the third year of Phase III. While significant progress was made in several areas, much work needs to be done. The anode composition needs further improvements to attain commercial purity targets. At the present corrosion rate, the vertical plate anodes will wear too rapidly leading to a rapidly increasing anode-cathode gap and thermal instabilities in the cell. Cathode wetting as a function of both cathode plate composition and bath composition needs to be better understood to ensure that complete drainage of the molten aluminum off the plates occurs. Metal buildup appears to lead to back reaction and low current efficiencies.

R.A. Christini; R.K. Dawless; S.P. Ray; D.A. Weirauch, Jr.

2001-11-05T23:59:59.000Z

Note: This page contains sample records for the topic "advanced anl cathode" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

An Advanced Lithium-Ion Battery Based on a Graphene Anode and a Lithium Iron Phosphate Cathode  

Science Journals Connector (OSTI)

An Advanced Lithium-Ion Battery Based on a Graphene Anode and a Lithium Iron Phosphate Cathode ... To the best of our knowledge, complete, graphene-based, lithium ion batteries having performances comparable with those offered by the present technology are rarely reported; hence, we believe that the results disclosed in this work may open up new opportunities for exploiting graphene in the lithium-ion battery science and development. ... A full Li-ion battery (Figure 4a) is obtained by coupling the Cu-supported graphene nanoflake anode with a lithium iron phosphate, LiFePO4, that is, a cathode commonly used in commercial batteries. ...

Jusef Hassoun; Francesco Bonaccorso; Marco Agostini; Marco Angelucci; Maria Grazia Betti; Roberto Cingolani; Mauro Gemmi; Carlo Mariani; Stefania Panero; Vittorio Pellegrini; Bruno Scrosati

2014-07-15T23:59:59.000Z

22

ANL News 2006  

NLE Websites -- All DOE Office Websites (Extended Search)

Laura Skubal and University of Chicago's Matt Newville collaborated to determine how mercury behaves in mustard agent. The research at the Advanced Photon Source's...

23

ANL News 2002  

NLE Websites -- All DOE Office Websites (Extended Search)

2 Articles 2 Articles Argonne News is the Argonne weekly employee newsletter. This page contains Argonne News articles that focus on the APS. Student is youngest APS poster award winner (Jan. 28) Seventeen-year-old Wenyi Cai was the youngest winner ever of a student poster presentation award at the 11th User Meeting at the Advanced Photon Source (APS). Argonne promoteslocal economic opportunity (Feb. 11) Hi-tech companies are increasingly turning to Argonne's research facilities to keep their products on top of the market. New APS beamlines target protein structure (Mar. 25) An agreement to build new biological research capabilities at Argonne's Advanced Photon Source has been signed by Argonne officials and the directors of two institutes of the National Institute of Health.

24

Advanced Lithium Battery Cathodes Using Dispersed Carbon Fibers as the Current Collector  

SciTech Connect

To fabricate LiFePO4 battery cathodes, highly conductive carbon fibers of 10-20 m in diameter have been used to replace a conventional aluminum (Al) foil current collector. This disperses the current collector throughout the cathode sheet and increases the contact area with the LiFePO4 (LFP) particles. In addition, the usual organic binder plus carbon-black can be replaced by a high temperature binder of <5 weight % carbonized petroleum pitch (P-pitch). Together these replacements increase the specific energy density and energy per unit area of the electrode. Details of the coating procedure, characterization and approach for maximizing the energy density are discussed. In a side-by-side comparison with conventional cathodes sheets of LFP on Al foil, the carbon fiber composite cathodes have a longer cycle life, higher thermal stability, and high capacity utilization with little sacrifice of the rate performance.

Martha, Surendra K [ORNL; Kiggans, Jim [ORNL; Nanda, Jagjit [ORNL; Dudney, Nancy J [ORNL

2011-01-01T23:59:59.000Z

25

ANL Vol 1- Final.PDF  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

inadequate to prevent recurrence include a failure to conduct OSHA-required annual lockouttagout reviews, which was identified by DOE in 1999, and CHAAO and ANL deficiencies...

26

Recent Articles on www.anl.gov  

NLE Websites -- All DOE Office Websites (Extended Search)

article-feed1 en Argonne model analyzes water footprint of biofuels http:www.anl.govarticlesargonne-model-analyzes-water-footprint-biofuels

27

ANL-FF-262i  

Office of Legacy Management (LM)

, v-W&, , v-W&, ANL-FF-262i This document consists of 1 page, No.>f 7 copies. SeriesA. -,-- 22 February 1952 TO; B. Blumenthal Metallurgy From: H, Luetzow Metallurgy Re: HIGH PURITY CRANIUM TO BE ROLLID TO FOIL M r, E. Creutz of the Carnegie Institute of Technology has requested ten square inches of uranium foil 0.1 mil to 1 nil thick., The possibility of pro- ducing foil of this thickness from our foundry's graphite-melted uranium is remote because of the metalIs high carbon content. High purity metal isto be considered a possible solution of many of the difficulties experienced in producing foil from relatively high carbon uranium. Therefore, a sample of high purity uranium of sufficient size for the project outlined above is requested. CLASSIFICATION CPNCELLED

28

ANL/APS/TB-3 Undulator A Characteristics and Specifications  

NLE Websites -- All DOE Office Websites (Extended Search)

ANL/APS/TB-3 ANL/APS/TB-3 Undulator A Characteristics and Specifications by B. Lai, A. Khounsary,R. Savoy, L. Moog, and E. Gluskin February 1993 Advanced Photon Source . & Argonne National Laboratory, Argonne, Illinois 60439 o operated by The University of Chicago for the United States Department of Energy under Contract W-31-1 09-Eng-38 '"~ Argonne National Laboratory, with facilties in the states of Ilinois and Idaho, is owned by the United States government, and operated by The University of Chicago under the provisions of a contract with the Department of Energy. . DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any waranty, express

29

ANL Workshop on the EoS in Astrophysics - 2008  

NLE Websites -- All DOE Office Websites (Extended Search)

Equation of State at Nonzero Density and Temperature, and its Equation of State at Nonzero Density and Temperature, and its Application in Astrophysics ANL Workshop, 25-29 August 2008, TheoryGroup in the ANL Physics Division JINA News Location Program 1st Circular Restaurants Links Contact News 08/30/08 - Last news on this workshop: It seems like everybody made it home safely. We take this opportunity to thank all our speakers and participants for their interesting and instructive contributions to this workshop. Thank you! 08/26/08 - Our workshop dinner will be held tomorrow, Wednesday 08/27 at the Saffron Restaurant on 6020 Cass Ave Westmont, IL 60559 at 7pm. Please gather at about 6:30pm at the entrance to the Physics Division's building to ensure everyone will be able to get to the restaurant. I'll collect the fee in advance.

30

ANL-85-51 ANL-85-51 FLOW-INDUCED VIBRATION OF CIRCULAR CYLINDRICAL STRUCTURES  

Office of Scientific and Technical Information (OSTI)

ANL-85-51 ANL-85-51 ANL-85-51 ANL-85-51 FLOW-INDUCED VIBRATION OF CIRCULAR CYLINDRICAL STRUCTURES by ShoeiSheng Chen BASE TECHNOLOGY ARGONNE NATIONAL LABORATORY, ARGONNE, ILLINOIS Operated by THE UNIVERSITY OF CHICAGO for the U. S. DEPARTMENT OF ENERGY under Contract W-31-109-Eng-38 A major purpose of the Techni- cal information Center is to provide the broadest dissemination possi- ble of information contained in DOE's Research and Development Reports to business, industry, the academic community, and federal, state and local governments. Although a small portion of this report is not reproducible, it is being made available to expedite the availability of information on the research discussed herein. Distribution Category: LMFBR-Components: Base Technology (UC-79k) ANL-85-51 ANL-85-51

31

CAT Guide to the ANL CMS system  

NLE Websites -- All DOE Office Websites (Extended Search)

APS CAT Guide to Using the ANL Chemical Management System (August 30, 2000) The Argonne Chemical Management System (CMS) is a database used to track the ownership and location of...

32

ANL Beams and Applications Seminar  

NLE Websites -- All DOE Office Websites (Extended Search)

Argonne Beams & Applications Seminar Search APS ... Search Argonne Home > Argonne Home > Advanced Photon Source > Seminar Archive 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003...

33

E-Print Network 3.0 - anl Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Platinum Content Nenad Markovic, ANL 2... Cell Lifetime Limitations: The Role of Electrocatalyst Degradation Debbie Myers, ANL 9:10 Development... Jennifer Mawdsley, ANL 1:40...

34

ANL/EAD/TM-9 Derivation  

Office of Legacy Management (LM)

ANL/EAD/TM-9 ANL/EAD/TM-9 Derivation of Uranium Residual Radioactive Material Guidelines for the Former Alba Craft Laboratory Site, Oxford, Ohio _ _ ,_ _., by M. Nimmagadda, E. Faillace, and C. Yu Environmental Assessment Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439 January 1994 Work sponsored by United States Department of Energy MASTER CONTENTS NOTATION ......................................................... v SUMMARY ......................................................... 1 1 INTRODUCTION AND BRIEF HISTORY ............................... 3 1.1 Site Description and Setting ...................................... 3 1.2 Site History .................................................. 4 1.3 Derivation of Cleanup Guidelines .................................. 6 2 SCENARIO DEFINITIONS ..........................................

35

Compliance, assurance, and pollution prevention at Argonne National Laboratory-East (ANL-E) - process and operations  

SciTech Connect

Argonne National Laboratory-East (ANL-E) is a multi-program laboratory operated by the University of Chicago for the U.S. Department of Energy (DOE). ANL-E has incorporated its environmental compliance functions and pollution prevention (P2) activities into its processes. Examples of this include standard project and experimental reviews, targeted process analysis, and regulatory and oversight audits. ANL-E's implementation process has allowed them to meet regulatory drivers as well as internal goals with minimal resources. This paper reviews these processes and implementation of the environmental and pollution prevention requirements which have led to an award winning P2 program.

Kamiya, M. A.; Trychta, K.

2000-02-10T23:59:59.000Z

36

Synthesis, Characterization and Performance of Cathodes for Lithium Ion Batteries  

E-Print Network (OSTI)

A new cathode material for batteries of high energy density.high-energy cathode for rechargeable lithium batteries. Advanced Materialsmaterials are promising cathodes, as they can provide high power and high energy,

Zhu, Jianxin

2014-01-01T23:59:59.000Z

37

ANL Study Shows Wind Power Decreases Power Sector Emissions ...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

ANL Study Shows Wind Power Decreases Power Sector Emissions ANL Study Shows Wind Power Decreases Power Sector Emissions May 1, 2012 - 3:38pm Addthis This is an excerpt from the...

38

High energy spinel-structured cathode stabilized by layered materials for advanced lithium-ion batteries  

Science Journals Connector (OSTI)

Abstract Due to well-known Jahn–Teller distortion in spinel LiMn1.5Ni0.5O4, it can only be reversibly electrochemically cycled between 3 and 4.8 V with a limited reversible capacity of ?147 mAh g?1. This study intends to embed the layer-structured Li2MnO3 nanodomains into LiMn1.5Ni0.5O4 spinel matrix so that the Jahn–Teller distortion can be suppressed even when the average Mn oxidation state is below +3.5. A series of xLi2MnO3·(1 ? x)LiMn1.5Ni0.5O4 where x = 0, 0.1, 0.2, 0.3, 0.4, 0.5 and 1 are synthesized by co-precipitation method. The composites with intermediate values of x = 0.1, 0.2, 0.3, 0.4 and 0.5 exhibit both spinel and layered structural domains in the particles and show greatly improved cycle stability than that of the pure spinel. Among them, 0.3Li2MnO3·0.7LiMn1.5Ni0.5O4 delivers the highest and almost constant capacity after a few conditional cycles and shows superior cycle stability. Ex-situ X-ray diffraction results indicate that no Jahn–Teller distortion occurs during the cycling of the 0.3Li2MnO3·0.7LiMn1.5Ni0.5O4 composite. Additionally, 0.3Li2MnO3·0.7LiMn1.5Ni0.5O4 possesses a high energy density of ?700 Wh kg?1, showing great promise for advanced high energy density lithium-ion batteries.

Jia Lu; Ya-Lin Chang; Bohang Song; Hui Xia; Jer-Ren Yang; Kim Seng Lee; Li Lu

2014-01-01T23:59:59.000Z

39

Miniaturized cathodic arc plasma source  

DOE Patents (OSTI)

A cathodic arc plasma source has an anode formed of a plurality of spaced baffles which extend beyond the active cathode surface of the cathode. With the open baffle structure of the anode, most macroparticles pass through the gaps between the baffles and reflect off the baffles out of the plasma stream that enters a filter. Thus the anode not only has an electrical function but serves as a prefilter. The cathode has a small diameter, e.g. a rod of about 1/4 inch (6.25 mm) diameter. Thus the plasma source output is well localized, even with cathode spot movement which is limited in area, so that it effectively couples into a miniaturized filter. With a small area cathode, the material eroded from the cathode needs to be replaced to maintain plasma production. Therefore, the source includes a cathode advancement or feed mechanism coupled to cathode rod. The cathode also requires a cooling mechanism. The movable cathode rod is housed in a cooled metal shield or tube which serves as both a current conductor, thus reducing ohmic heat produced in the cathode, and as the heat sink for heat generated at or near the cathode. Cooling of the cathode housing tube is done by contact with coolant at a place remote from the active cathode surface. The source is operated in pulsed mode at relatively high currents, about 1 kA. The high arc current can also be used to operate the magnetic filter. A cathodic arc plasma deposition system using this source can be used for the deposition of ultrathin amorphous hard carbon (a-C) films for the magnetic storage industry.

Anders, Andre (Albany, CA); MacGill, Robert A. (Richmond, CA)

2003-04-15T23:59:59.000Z

40

Three-Dimensional Thermal Tomography Advances Cancer Treatment...  

NLE Websites -- All DOE Office Websites (Extended Search)

Three-Dimensional Thermal Tomography Advances Cancer Treatment (ANL-IN-07-170) Argonne National Laboratory Contact ANL About This Technology

Change in temperature over time...

Note: This page contains sample records for the topic "advanced anl cathode" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

ANL/APS/TB-2  

NLE Websites -- All DOE Office Websites (Extended Search)

. Use of a Mirror as the First Optical Component for an Undulator Beamline at the APS by W. Yun, A. Khounsary, B. Lai, and E. Gluskin September 1992 . Advanced Photon Source . @ Argonne National Laboratory, Argonne, Illinois 60439 o operated by The University of Chicago for the United States Department of Energy under Contract W-31-1 09-Eng-38 Argonne National Laboratory, with facilities in the states of Ilinois and Idaho, is owned by the United States government, and operated by The University of Chicago under the provisions of a contract with the Deparment of Energy. DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any waranty, express

42

ANL/APS/TB-11  

NLE Websites -- All DOE Office Websites (Extended Search)

1 1 . Wiggler A Characteristics and Specifications by B. Lai, A. Khounsary, and E. Gluskin February 1993 . Advanced Photon Source .~ Argonne National Laboratory, Argonne, Ilinois 60439 o operated by The University of Chicago for the United States Department of Energy under Contract W-31-1 09-Eng-38 "'--...... Argonne National Laboratory, with facilities in the states of Ilinois and Idaho, is owned by the United States government, and operated by The University of Chicago under the provisions of a contract with the Deparment of Energy. . DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any waranty, express

43

ANL/APS/TB-17  

NLE Websites -- All DOE Office Websites (Extended Search)

7 7 1 Undulator A Characteristics and Specifications: Enhanced Capabilities Roger J. Dejus, Barry Lai, Elizabeth R. Moog, and Efim Gluskin Introduction The undulator A for the Advanced Photon Source (APS) is a planar insertion device that will generate high-intensity x-ray radiation in the spectral range 3.2 keV to 45 keV by using the first, third, and fifth harmonics of radiation. The device has been optimized for the APS so that the variation in brilliance is small when tuning from one harmonic energy to the next. This has been achieved by an increase of the magnetic field for a given gap and by allowing a smaller minimum gap when installed in the storage ring. This document describes the modification of the magnetic structure and the enhanced on- axis magnetic fields. The enhanced spectral performance is discussed and illustrated in tuning

44

CAT Guide to the ANL CMS system  

NLE Websites -- All DOE Office Websites (Extended Search)

APS CAT Guide to Using the ANL Chemical Management System APS CAT Guide to Using the ANL Chemical Management System (August 30, 2000) The Argonne Chemical Management System (CMS) is a database used to track the ownership and location of primary (original) containers1 of hazardous chemicals. It provides for a current listing of hazardous chemicals to which individuals working at Argonne might be exposed and it provides for automated generation of reports required by the EPA and OSHA. Finally, each inventory entry is linked to the MSDS for the product. Applicability APS CATs should use the Chemical Management System (CMS) as described below: Container Description Barcode & CMS Record Creation Required? Comments Any container received with an Argonne barcode. Yes, label already present. The corresponding CMS record must be updated when the container is permanently moved to a new location, when ownership changes, or when the container is emptied and discarded.

45

CH-ANL Report.indd  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

1 2.0 STATUS AND RESULTS ..................................................................... 1 3.0 CONCLUSIONS .................................................................................... 5 4.0 RATING ................................................................................................. 5 5.0 OPPORTUNITIES FOR IMPROVEMENT .......................................... 6 APPENDIX A: SUPPLEMENTAL INFORMATION ................................... 7 APPENDIX B: SITE-SPECIFIC FINDINGS ................................................. 8 Abbreviations Used in This Report ANL Argonne National Laboratory CH Offi ce of Science Chicago Offi ce CIC Classifi cation and Information Control DOE U.S. Department of Energy NNSA National Nuclear Security Administration

46

Cite this: RSC Advances, 2013, 3, Cathodic ALD V2O5 thin films for high-rate  

E-Print Network (OSTI)

passivation layers and more recently active storage material. Here we report a detailed study of ALD V2O5 as a high capacity cathode material, using vanadium tri-isopropoxide (VTOP) precursor with both O3 and H2O in electrochemical energy storage by Li-ion batteries, materials which actively store the ionic charge must

Ghodssi, Reza

47

6th ANL/MSU/JINA/INT FRIB Theory Workshop  

NLE Websites -- All DOE Office Websites (Extended Search)

Home Participants Program & Talks Location Access Lodging Transportation Restaurants Forms 6th ANL/MSU/JINA/INT FRIB Theory Workshop Computational Forefront in Nuclear Theory: Preparing for FRIB Argonne National Laboratory, March 23 - 26, 2010 This workshop will concentrate on advances in theoretical methods for computing properties of nuclei and reactions relevant to the experimental program at FRIB. Although we expect a significant number of talks on methods that require the largest available and planned computers, there will also be talks on new methods that do not require such large machines. Topics quantum Monte Carlo -- no-core shell model -- coupled-cluster method -- unitary correlated-operator method -- shell model -- continuum shell model -- Gamow shell model -- energy density functionals -- cranking -- heavy-ion

48

Recent advances in activity and durability enhancement of Pt/C catalytic cathode in PEMFC: Part II: Degradation mechanism and durability enhancement of carbon supported platinum catalyst  

Science Journals Connector (OSTI)

Polymer electrolyte membrane fuel cell (PEMFC) technology has advanced rapidly in recent years, with one of active area focused on improving the long-term performance of carbon supported catalysts, which has been recognized as one of the most important issues to be addressed for the commercialization of the PEMFCs. The cathode catalyst layer in \\{PEMFCs\\} typically contains platinum group metal/alloy nanoparticles supported on a high-surface-area carbon. Carbon support corrosion and Pt dissolution/aggregation are considered as the major contributors to the degradation of the Pt/C catalysts. If the platinum particles cannot maintain their structure over the lifetime of the fuel cell, change in the morphology of the catalyst layer from the initial state will result in a loss of electrochemical activity. This paper reviews the recent advances in the stability improvement of the Pt/C cathodic catalysts in PEMFC, especially focusing on the durability enhancement through the improved Pt–C interaction. Future promising strategies towards the extension of catalysts operation life are also prospected.

Xingwen Yu; Siyu Ye

2007-01-01T23:59:59.000Z

49

ANL-W EM Report.pmd  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

5 5 4.0 RATINGS ................................................................................................ 7 APPENDIX A - SUPPLEMENTAL INFORMATION .............................. 9 APPENDIX B - SITE-SPECIFIC FINDINGS ......................................... 11 APPENDIX C - EMERGENCY PLANNING.......................................... 12 APPENDIX D - EMERGENCY RESPONSE .......................................... 21 APPENDIX E - DOE LINE MANAGEMENT OVERSIGHT ................ 28 ANL-W Argonne National Laboratory - West ASO Argonne Site Office ASO-W Argonne Site Office - West BED Building Emergency Director CAT Consequence Assessment Team CFR Code of Federal Regulations CH Chicago Operations Office DOE U.S. Department of Energy DOT Department of Transportation DSA Documented Safety Analysis

50

ANL analysis of ZPPR-13A  

SciTech Connect

The ZPPR-13 experiments provide basic physics data for radial heterogeneous LMFBR cores of approximately 700MWe size. Assemblies ZPPR-13A, ZPPR-13B and ZPPR-13C comprised the JUPITER-II cooperative program between the U.S. Department of Energy (US DOE) and PNC of Japan. The measurements were made between August 1982 and April 1984. The core designs and the measurements were planned jointly by the two parties with substantial input from U.S. industrial interests to ensure coverage of the design requirements. This report describes in detail the results of the Argonne National Laboratory (ANL) analyses of phase 13A.

Collins, P.J.; Brumbach, S.B. [comps.

1984-08-09T23:59:59.000Z

51

Arc discharge regulation of a megawatt hot cathode bucket ion source for the experimental advanced superconducting tokamak neutral beam injector  

SciTech Connect

Arc discharge of a hot cathode bucket ion source tends to be unstable what attributes to the filament self-heating and energetic electrons backstreaming from the accelerator. A regulation method, which based on the ion density measurement by a Langmuir probe, is employed for stable arc discharge operation and long pulse ion beam generation. Long pulse arc discharge of 100 s is obtained based on this regulation method of arc power. It establishes a foundation for the long pulse arc discharge of a megawatt ion source, which will be utilized a high power neutral beam injection device.

Xie Yahong; Hu Chundong; Liu Sheng; Jiang Caichao; Li Jun; Liang Lizhen [Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031 (China); Collaboration: NBI Team

2012-01-15T23:59:59.000Z

52

Sulfur-Graphene Oxide Nanocomposite Cathodes for Lithium/Sulfur...  

NLE Websites -- All DOE Office Websites (Extended Search)

Advanced Materials Advanced Materials Find More Like This Return to Search Sulfur-Graphene Oxide Nanocomposite Cathodes for LithiumSulfur Cells Lawrence Berkeley National...

53

Microsoft Word - ANL-INL-EVS24-Dyno_to_fleet_comparison Final 4-16-09.doc  

NLE Websites -- All DOE Office Websites (Extended Search)

Correlating Dynamometer Testing to In-Use Fleet Results Correlating Dynamometer Testing to In-Use Fleet Results of Plug-In Hybrid Electric Vehicles Michael Duoba 1 , Richard Carlson 2 , Forrest Jehlik 3 , John Smart 4, Sera White 5 1 Argonne National Laboratory, 9700 South Cass Ave, Argonne, IL 60439, mduoba@anl.gov 2 Argonne National Laboratory, 9700 South Cass Ave, Argonne, IL 60439, fjehlik@anl.gov 3 Argonne National Laboratory, 9700 South Cass Ave, Argonne, IL 60439, rwcarlson@anl.gov 4 Idaho National Laboratory, 2351 N Blvd, Idaho Falls, ID, 83415, john.smart@inl.gov 5 Idaho National Laboratory, 2351 N Blvd, Idaho Falls, ID, 83415, sera.white@inl.gov Abstract The Untied States Department of Energy is engaged in the research, development and deployment of PHEV technology through the "Advanced Vehicle Testing Activity." In this program, data has been

54

ANL/ALCF/ESP-13/16  

NLE Websites -- All DOE Office Websites (Extended Search)

6 6 Multiscale Molecular Simulations at the Petascale (Parallelization of Reactive Force Field Model for Blue Gene/Q) ALCF-2 Early Science Program Technical Report Argonne Leadership Computing Facility About Argonne National Laboratory Argonne is a U.S. Department of Energy laboratory managed by UChicago Argonne, LLC under contract DE-AC02-06CH11357. The Laboratory's main facility is outside Chicago, at 9700 South Cass Avenue, Argonne, Illinois 60439. For information about Argonne and its pioneering science and technology programs, see www.anl.gov. Availability of This Report This report is available, at no cost, at http://www.osti.gov/bridge. It is also available on paper to the U.S. Department of Energy and its contractors, for a processing fee, from:

55

High Energy Physics Division, ANL Lattice QCD  

NLE Websites -- All DOE Office Websites (Extended Search)

Energy Energy Physics Division, ANL Lattice QCD in extreme environments D. K. Sinclair (HEP, Argonne) J. B. Kogut (Physics, Illinois) D. Toublan (Physics, Illinois) 1 Lattice QCD Quantum chromodynamics(QCD) de- scribes Hadrons and their strong inter- actions. Hadrons consist of quarks held together by gluons. Lattice QCD is QCD on a 4-dimensional (space-time) lattice. Allows numerical simulation of the functional integrals which define this quantum field theory, and non-perturbative QCD calculations. Physics - properties of hadrons (masses, etc.), hadronic matrix elements (HEP), hadronic matter at finite temperature and/or densities (RHIC, early universe, neutron stars). 2 Computational Methods * Functional integral is mapped to the partition function for a classical sys- tem. Molecular-dynamics methods are used to calculate the observables for this classical system.

56

presentation_anl-SHORT-aug09  

NLE Websites -- All DOE Office Websites (Extended Search)

magnetic moments of ps states of nuclei far magnetic moments of ps states of nuclei far from stability Argonne Workshop: Aug. 8-9,2009 Noémie Benczer-Koller Rutgers University I will not talk about everything, namely: Intermediate Coulomb excitation experiments at MSU with the TF technique Recoil in vacuum (RIV) at ORNL, ANL β-NMR, etc... These require more instrumentation than the experiments I would like to start with, as well as complex calibrations although they are a good option for future experiments. ************************************************************ I will mention possible Transient Field (TF) measurements with CARIBU beams. Measurements of magnetic moments of ps states with radioactive beams 2 Motivation : Microscopic structure of individual low-lying states in nuclei far from stability, with TF techniques and Coulomb

57

People | Advanced Photon Source  

NLE Websites -- All DOE Office Websites (Extended Search)

apsuser@aps.anl.gov (630) 252-9090 8:30 am - 5:30 pm, Monday-Friday Media Contact Rick Fenner (630) 252-5280 Webmaster Kelly Cunningham (630) 252-0619 Mailing Address Advanced...

58

Production-scale LLW and RMW solidification system operational testing at Argonne National Laboratory-East (ANL-E)  

SciTech Connect

Argonne National Laboratory-East (ANL-E) has begun production-scale testing of a low-level waste and radioactive mixed waste solidification system. This system will be used to treat low-level and mixed radioactive waste to meet land burial requirements. The system can use any of several types of solidification media, including a chemically bonded phosphate ceramic developed by ANL-E scientists. The final waste product will consist of a solidified mass in a standard 208-liter drum. The system uses commercial equipment and incorporates several unique process control features to ensure proper treatment. This paper will discuss the waste types requiring treatment, the system configuration, and operation results for these waste streams.

Wescott, J.; Wagh, A.; Singh, D. [Argonne National Lab., IL (United States); Nelson, R. [Sargent and Lundy, Chicago, IL (United States); No, H. [H and P, Inc., Vienna, VA (United States)

1997-04-01T23:59:59.000Z

59

Colloid-Associated Radionuclide Concentration Limits: ANL  

SciTech Connect

The purpose and scope of this report is to describe the analysis of available colloidal data from waste form corrosion tests at Argonne National Laboratory (ANL) to extract characteristics of these colloids that can be used in modeling their contribution to the source term for sparingly soluble radioelements (e.g., Pu). Specifically, the focus is on developing a useful description of the following waste form colloid characteristics: (1) composition, (2) size distribution, and (3) quantification of the rate of waste form colloid generation. The composition and size distribution information are intended to support analysis of the potential transport of the sparingly soluble radionuclides associated with the waste form colloids. The rate of colloid generation is intended to support analysis of the waste form colloid-associated radionuclide concentrations. In addressing the above characteristics, available data are interpreted to address mechanisms controlling colloid formation and stability. This report was developed in accordance with the ''Technical Work Plan for Waste Form Degradation Process Model Report for SR'' (CRWMS M&O 2000). Because the end objective is to support the source term modeling we have organized the conclusions into two categories: (1) data analysis conclusions and (2) recommendations for colloid source term modeling. The second category is included to facilitate use of the conclusions from the data analysis in the abstraction of a colloid source term model. The data analyses and conclusions that are presented in this report are based on small-scale laboratory tests conducted on a limited number of waste glass compositions and spent fuel types.

C. Mertz

2000-12-21T23:59:59.000Z

60

Advanced Photon Source  

NLE Websites -- All DOE Office Websites (Extended Search)

Tomography Interest Group Contact: Robert Winarski, Center for Nanoscale Materials winarski@anl.gov Contact: Francesco De Carlo, Advanced Photon Source decarlo@aps.anl.gov The tomography special interest group of the Advanced Photon Source (APS) at Argonne National Laboratory has been created to promote awareness of the tomography facilities at the APS and to foster communications between the various research groups. Through this group, we believe we can build a strong user community for tomography. The following beamlines have active tomography research programs: 2-BM-B (XOR) http://www.aps.anl.gov/Xray_Science_Division/Xray_Microscopy_and_Imaging/Science_and_Research/Techniques/Tomography/index.html Information about the beamline: http://beam.aps.anl.gov/pls/apsweb/beamline_display_pkg.display_beamline?p_beamline_num_c=31

Note: This page contains sample records for the topic "advanced anl cathode" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

ANL Wind Power Forecasting and Electricity Markets | Open Energy  

Open Energy Info (EERE)

ANL Wind Power Forecasting and Electricity Markets ANL Wind Power Forecasting and Electricity Markets Jump to: navigation, search Logo: Wind Power Forecasting and Electricity Markets Name Wind Power Forecasting and Electricity Markets Agency/Company /Organization Argonne National Laboratory Partner Institute for Systems and Computer Engineering of Porto (INESC Porto) in Portugal, Midwest Independent System Operator and Horizon Wind Energy LLC, funded by U.S. Department of Energy Sector Energy Focus Area Wind Topics Pathways analysis, Technology characterizations Resource Type Software/modeling tools Website http://www.dis.anl.gov/project References Argonne National Laboratory: Wind Power Forecasting and Electricity Markets[1] Abstract To improve wind power forecasting and its use in power system and electricity market operations Argonne National Laboratory has assembled a team of experts in wind power forecasting, electricity market modeling, wind farm development, and power system operations.

62

RACETRACK AT ANL S. L. Kramer LS-67  

NLE Websites -- All DOE Office Websites (Extended Search)

RACETRACK AT ANL RACETRACK AT ANL S. L. Kramer LS-67 April, 1986 1 LS-67 S. Kramer RACETRACK AT ANL Thanks to the assistance and patience of Albin Wrulich at LBL, the most recent version of the accelerator tracking code RACETRACK is now opera- tional at Argonne on ANLHEP. Access to this program can be obtained by run- ning the program HEP2:[AR.KRAMER.RACETRAC]RACE.EXE. An input file FOROOS and output file FOR006 are all that is required. A sample data file DEMO.DAT (Table I) and an instruction file RACETRACK. GUIDE are included in this directory. This program has been tested in a mode which should agree with PATRICIA-84.9 for the "ideal" CDR lattice. Figure 1 shows the comparison of the dynamic aperture for both programs. The op/p = 0 apertures agree exactly,

63

Novel Composite Cathode Structures  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Relevance * New cathode materials are required to improve the energy density of Li-ion cells for transportation technologies. * The cathode system in this project directly...

64

Waste minimization and pollution prevention initiatives within Argonne National Laboratory-East (ANL-E) boiler house operations  

SciTech Connect

The mission of ANL-E Plant Facility and Services-Utilities and Systems (PFS-US) is to operate and maintain utility services in a cost-effective manner, while utilizing new and innovative methods whenever possible. PFS-US operates an on-site coal burning boiler plant that generates steam for use throughout the Laboratory as a source to heat buildings, as well as for use in research experiments. In the recent past, PFS-US has embarked upon a series of initiatives to improve operating efficiency of boiler house operations. The results of these projects have had the following impacts on boiler house performance and operations: (1) boiler house efficiency and operations have improved, (2) boiler house operating costs have been reduced, (3) specific operating and maintenance costs have been avoided or eliminated, and (4) the amount of waste and pollution generated has been reduced. Through the implementation of these initiatives, over $250,000 of revenue and cost savings have been incurred by ANL-E. In addition, the Laboratory and DOE will benefit annually from revenues, cost savings, and the reduction of environmental liability resulting from these initiatives.

NONE

1996-08-01T23:59:59.000Z

65

ANL-AAI-PUB-2008-004  

NLE Websites -- All DOE Office Websites (Extended Search)

AAI-PUB-2008-004 AAI-PUB-2008-004 March 2008 An X-Ray Free-Electron Laser Oscillator with an Energy Recovery Linac Kwang-Je Kim and Yuri Shvyd'ko Argonne National Laboratory, Advanced Photon Source, 9700 S. Cass Ave, Argonne, IL, 60439 Sven Reiche UCLA, Physics and Astronomy Department, Los Angeles, CA 90095 ABSTRACT We show that a free-electron laser oscillator generating x-rays with a wavelengths of about 1 Å is feasible using ultra-low emittance electron beams of a multi-GeV energy recovery linac, combined with a low-loss crystal cavity. The device will produce x-ray pulses with 109 photons at a repetition rate of 1-100 MHz. The pulses are temporarily and transversely coherent, with an rms bandwidth of about 2 meV, and rms pulse length of about 1 ps.

66

A. A. Abrikosov Publications at Argonne National Laboratory (ANL)  

NLE Websites -- All DOE Office Websites (Extended Search)

A. A. Abrikosov Publications A. A. Abrikosov Publications Argonne National Laboratory Abrikosov · Resources with Additional Information "The Order Parameter in HTSC"; Abrikosov, A. A.; International Conference on Superconductivity (TICS '95), Hualien, Taiwan; Aug 8-11, 1995 (ANL/MSD/CP-91998) "Some Consequences of the Layered Structure of HTSC"; Abrikosov, A. A.; International Conference on Superconductivity (TICS '95), Hualien, Taiwan; Aug 8-11, 1995; Chin. J. Phys., 34(2-II): 330-39 (ANL/MSD/CP-91922, Apr. 1996) "The Dependance of Delta and Tc on Hopping and the Temperature Variation of {delta} in a Layered Model of HTSC"; Abrikosov, A. A.; Klemm, R. A.; Physica C, 191: 224-36; 1992 "Raman Light Scattering by Electrons in Layered Superconductors"; Abrikosov, A. A.; Physica C, 182: 191-202; 1991

67

Anode and Cathode Arcs  

Science Journals Connector (OSTI)

... we call an anode arc, produces a circular pit on the anode and a general roughening of the opposed cathode. Photomicrographs of single anode-type arcs were published1 before the ... arcs\tCathode arcs

L. H. GERMER; W. S. BOYLE

1955-11-26T23:59:59.000Z

68

E-Print Network 3.0 - anl electrichemical program Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

Dave Peterson Reg Tyler Lea Yancey ANL Tom Benjamin John Source: DOE Office of Energy Efficiency and Renewable Energy, Hydrogen, Fuel Cells and Infrastructure Technologies...

69

E-Print Network 3.0 - anl organization plans Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

be substituted Model is available on the ANL website: ... Source: DOE Office of Energy Efficiency and Renewable Energy, Hydrogen, Fuel Cells and Infrastructure Technologies...

70

Recent advances in activity and durability enhancement of Pt/C catalytic cathode in PEMFC: Part I. Physico-chemical and electronic interaction between Pt and carbon support, and activity enhancement of Pt/C catalyst  

Science Journals Connector (OSTI)

Carbon-supported platinum or platinum alloys are generally used as the cathodic electrocatalysts in polymer electrolyte membrane fuel cells (PEMFC) to enhance the oxygen reduction reaction (ORR). Main challenges to be addressed in this area are the high electrochemical activity and high stability maintenance for low-Pt-loading catalysts toward the feasibility for fuel cell operation and the reduction of the system cost. The interaction of Pt with carbon support, as well as the interaction of Pt precursor with carbon during the supported catalyst formation, are considered to be beneficial to the improvement of catalytic activity and durability of the electrocatalysts. This paper provides a review of recent advances related to the physico-chemical and electronic interactions at the catalyst–support interface and the catalyst activity enhancement through improved Pt–C interaction, especially focusing on the surface modification of the carbon support to form proper functional groups and chemical links at the Pt/C interface.

Xingwen Yu; Siyu Ye

2007-01-01T23:59:59.000Z

71

ANL/TD/TM03-01: Lasers and Beam Delivery for Rock Drilling  

NLE Websites -- All DOE Office Websites (Extended Search)

Development ANL/TD/TM03-01 Development ANL/TD/TM03-01 Division Technology Development Division Technology Development Division Technology Development Division Technology Development Lasers and Beam Delivery for Division Rock Drilling Technology Development Division Technology Development Division by Technology Development K.H. Leong, Z. Xu, C.B. Reed, and Division R.A. Parker Technology Development Division

72

Batteries: Overview of Battery Cathodes  

E-Print Network (OSTI)

and Titanates as High-Energy Cathode Materials for Li-IonI, Amine K (2009) High Energy Cathode Material for Long-LifeA New Cathode Material for Batteries of High Energy Density.

Doeff, Marca M

2011-01-01T23:59:59.000Z

73

ANL-78-XX-95 Energy Level Structure and Transition Probabilities  

Office of Scientific and Technical Information (OSTI)

j j ANL-78-XX-95 Energy Level Structure and Transition Probabilities in the Spectra of the Trivalent Lanthanides in LaF- W. T. Carnal! Chemistry Division Argonne National Laboratory Hannah Crosswhite and H. M. Crosswhite Department of Physics The Johns Hopkins University - N O T I C E - Thi* report w u prepared u an account of work sponsored by the United Slates Covemment. Neither the United State* nor ih* United States Department of Energy, nor any of their employees, nor *ny of their contractors, nbcontradon, or their employees, mikes any w i n i n t y , expreis ot implied, or aitumei any legal liability or responsibility for the accuracy, completenea or tisefulrten of any information, apparatus, product or procen disclosed, or represent! that its tat would not infringe privately owned rights.

74

Cathodic Arc Plasma Deposition  

Office of Scientific and Technical Information (OSTI)

Cathodic Arc Plasma Deposition Cathodic Arc Plasma Deposition André Anders Lawrence Berkeley National Laboratory, University of California, 1 Cyclotron Road, Mailstop 53, Berkeley, California 94720 aanders@lbl.gov Abstract Cathodic arc plasma deposition is one of oldest coatings technologies. Over the last two decades it has become the technology of choice for hard, wear resistant coatings on cutting and forming tools, corrosion resistant and decorative coatings on door knobs, shower heads, jewelry, and many other substrates. The history, basic physics of cathodic arc operation, the infamous macroparticle problem and common filter solutions are reviewed. Cathodic arc plasmas stand out due to their high degree of ionization, with important consequences for film nucleation, growth, and efficient utilization of substrate bias. The

75

Advanced Research  

NLE Websites -- All DOE Office Websites (Extended Search)

Super HigH-TemperaTure alloyS and Super HigH-TemperaTure alloyS and CompoSiTeS From nb-W-Cr SySTemS Description The U.S. Department of Energy's Office of Fossil Energy (DOE-FE) has awarded a three-year grant to the University of Texas at El Paso (UTEP) and Argonne National Laboratory (ANL) to jointly explore the high-temperature properties of alloys composed of niobium (Nb), tungsten (W), and chromium (Cr). The grant is administered by the Advanced Research (AR) program of the National

76

Assessment of the SE2-ANL code using EBR-II temperature measurements  

SciTech Connect

The SE2-ANL code is a modified version of the SUPERENERGY-2 code [1]. This code is used at Argonne National Laboratory (ANL) to compute the core-wide temperature profiles in Liquid Metal Reactor (LMR) cores. The accuracy of this code has recently been tested by comparing the predicted temperatures with measured values in the Experimental Breeder Reactor R (EBR-II). The detailed temperature distributions in two experimental subassemblies and the mixed mean subassembly outlet temperatures were used in this validation study. The SE2-ANL predictions were found to agree well with measured values. It was also found that SE2-ANL yields results with accuracy comparable to the more detailed COBRA-WC [2] calculations at much lower computational cost.

Yang, W.S.; Yacout, A.M.

1995-01-01T23:59:59.000Z

77

Definition: Cathode | Open Energy Information  

Open Energy Info (EERE)

Cathode Cathode Jump to: navigation, search Dictionary.png Cathode The negative pole of a battery (electrolytic cell), where electrons enter (and current leaves) the system.[1] View on Wikipedia Wikipedia Definition A cathode is an electrode through which electric current flows out of a polarized electrical device. The direction of electric current is, by convention, opposite to the direction of electron flow-thus, electrons are considered to flow toward the cathode electrode while current flows away from it. This convention is sometimes remembered using the mnemonic CCD for cathode current departs. Cathode polarity is not always negative. Although positively charged cations always move towards the cathode (hence their name) and negatively charged anions move away from it, cathode

78

Electrochemically Stable Cathode Current Collectors for Rechargeable...  

NLE Websites -- All DOE Office Websites (Extended Search)

Stable Cathode Current Collectors for Rechargeable Magnesium Batteries . Electrochemically Stable Cathode Current Collectors for Rechargeable Magnesium Batteries . Abstract:...

79

Depolarized and Fully Active Cathode Based on Li(Ni0.5Co0.2Mn0.3)O2 Embedded in Carbon Nanotube Network for Advanced Batteries  

Science Journals Connector (OSTI)

In this design, the CNT network simultaneously served as an electron transport pathway as well as an active cathode ingredient besides NCM523, showing reversible electrochemical activity during the Li ion battery operation in the presence of a high voltage electrolyte. ... (b) Voltage curves of NCM cathode calculated based on the first-principle method, and the experimental data obtained from the filtration NCM/CNT cathodes are shown in it for comparison. ... In conclusion, we have developed a fully active and depolarized composite cathode material based on NCM523 particles embedded in the interwoven 3D CNT network, which serves the dual functions of both storing Li ions as the active materials and providing the superhighway for the electron and Li ion migration. ...

Zhongzhen Wu; Xiaogang Han; Jiaxin Zheng; Yi Wei; Ruimin Qiao; Fei Shen; Jiaqi Dai; Liangbing Hu; Kang Xu; Yuan Lin; Wanli Yang; Feng Pan

2014-06-30T23:59:59.000Z

80

Tungsten Cathode Catalyst for PEMFC  

SciTech Connect

Final report for project to evaluate tungsten-based catalyst as a cathode catalyst for PEM cell applications.

Joel B. Christian; Sean P. E. Smith

2006-09-22T23:59:59.000Z

Note: This page contains sample records for the topic "advanced anl cathode" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Cathode material for lithium batteries  

DOE Patents (OSTI)

A method of manufacture an article of a cathode (positive electrode) material for lithium batteries. The cathode material is a lithium molybdenum composite transition metal oxide material and is prepared by mixing in a solid state an intermediate molybdenum composite transition metal oxide and a lithium source. The mixture is thermally treated to obtain the lithium molybdenum composite transition metal oxide cathode material.

Park, Sang-Ho; Amine, Khalil

2013-07-23T23:59:59.000Z

82

Atom Trap Trace Analysis at ANL | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

Atom Trap Trace Analysis at ANL Atom Trap Trace Analysis at ANL Nuclear Physics (NP) NP Home About Research Facilities Science Highlights Benefits of NP Spinoff Applications Spinoff Archives SBIR/STTR Applications of Nuclear Science and Technology Funding Opportunities Nuclear Science Advisory Committee (NSAC) News & Resources Contact Information Nuclear Physics U.S. Department of Energy SC-26/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-3613 F: (301) 903-3833 E: sc.np@science.doe.gov More Information » Spinoff Archives Atom Trap Trace Analysis at ANL Print Text Size: A A A RSS Feeds FeedbackShare Page Application/instrumentation: Atom Trap Trace Analysis (ATTA) to determine isotopic abundances. Developed at: Argonne National Laboratory Developed in: 1999-current

83

ANL-13/01 Surveillance of Site A and Plot M  

NLE Websites -- All DOE Office Websites (Extended Search)

ANL-13/01 ANL-13/01 Surveillance of Site A and Plot M Report for 2012 Environment, Safety, and Quality Assurance About Argonne National Laboratory Argonne is a U.S. Department of Energy laboratory managed by UChicago Argonne, LLC under contract DE-AC02-06CH11357. The Laboratory's main facility is outside Chicago, at 9700 South Cass Avenue, Argonne, Illinois 60439. For information about Argonne and its pioneering science and technology programs, see www.anl.gov. Availability of This Report This report is available, at no cost, at http://www.osti.gov/bridge. It is also available on paper to the U.S. Department of Energy and its contractors, for a processing fee, from: U.S. Department of Energy Office of Scientific and Technical Information

84

C O N TA C T > Lee Ann Ciarlette | 630.252.4835 | leeann@anl.gov | Nuclear Engineering Division | students.ne.anl.gov Argonne National Laboratory, 9700 South Cass Avenue, Lemont, IL 60439 November 2012  

E-Print Network (OSTI)

C O N TA C T > Lee Ann Ciarlette | 630.252.4835 | leeann@anl.gov | Nuclear Engineering Division | students.ne.anl.gov Argonne National Laboratory, 9700 South Cass Avenue, Lemont, IL 60439 November 2012 The Nuclear Engineering Division has hosted students from: Aalto University (Finland) · Auburn University

Kemner, Ken

85

ANL-10/01 Surveillance of Site A and Plot M  

Office of Legacy Management (LM)

ANL-10/01 Surveillance of Site A and Plot M Report for 2009 Environment, Safety, Health, and Quality Assurance Division Availability of This Report This report is available, at no cost, at http://www.osti.gov/bridge. It is also available

86

Permanent Closure of MFC Biodiesel Underground Storage Tank 99ANL00013  

SciTech Connect

This closure package documents the site assessment and permanent closure of the Materials and Fuels Complex biodiesel underground storage tank 99ANL00013 in accordance with the regulatory requirements established in 40 CFR 280.71, “Technical Standards and Corrective Action Requirements for Owners and Operators of Underground Storage Tanks: Out-of-Service UST Systems and Closure.”

Kerry L. Nisson

2012-10-01T23:59:59.000Z

87

Functionally Graded Cathodes for Solid Oxide Fuel Cells  

SciTech Connect

This DOE SECA project focused on both experimental and theoretical understanding of oxygen reduction processes in a porous mixed-conducting cathode in a solid oxide fuel cell (SOFC). Elucidation of the detailed oxygen reduction mechanism, especially the rate-limiting step(s), is critical to the development of low-temperature SOFCs (400 C to 700 C) and to cost reduction since much less expensive materials may be used for cell components. However, cell performance at low temperatures is limited primarily by the interfacial polarization resistances, specifically by those associated with oxygen reduction at the cathode, including transport of oxygen gas through the porous cathode, the adsorption of oxygen onto the cathode surface, the reduction and dissociation of the oxygen molecule (O{sub 2}) into the oxygen ion (O{sup 2-}), and the incorporation of the oxygen ion into the electrolyte. In order to most effectively enhance the performance of the cathode at low temperatures, we must understand the mechanism and kinetics of the elementary processes at the interfaces. Under the support of this DOE SECA project, our accomplishments included: (1) Experimental determination of the rate-limiting step in the oxygen reduction mechanism at the cathode using in situ FTIR and Raman spectroscopy, including surface- and tip-enhanced Raman spectroscopy (SERS and TERS). (2) Fabrication and testing of micro-patterned cathodes to compare the relative activity of the TPB to the rest of the cathode surface. (3) Construction of a mathematical model to predict cathode performance based on different geometries and microstructures and analyze the kinetics of oxygen-reduction reactions occurring at charged mixed ionic-electronic conductors (MIECs) using two-dimensional finite volume models with ab initio calculations. (4) Fabrication of cathodes that are graded in composition and microstructure to generate large amounts of active surface area near the cathode/electrolyte interface using a novel combustion chemical vapor deposition (CCVD) technique. (5) Application of advanced quantum chemical calculations to interpret measured spectroscopic information, as well as to guide design of high efficient cathode materials.

YongMan Choi; Meilin Liu

2006-09-30T23:59:59.000Z

88

Stabilized Spinel and Polyanion Cathodes  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

nanostructured phosphate and silicate cathodes and their nanocomposites with graphene - To develop a fundamental understanding of the factors that control the...

89

HIGH-CAPACITY POLYANION CATHODES  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

nanostructured phosphate and silicate cathodes as well as their nanocomposites with graphene to overcome the limitations of poor ionic and electronic conductivity - To develop a...

90

Batteries: Overview of Battery Cathodes  

E-Print Network (OSTI)

materials, although electro-active compounds containing these metals exist. Today’s technologically important cathodesactive field. Characteristics of battery cathode materials

Doeff, Marca M

2011-01-01T23:59:59.000Z

91

Synopsis of Cathode #4 Activation  

E-Print Network (OSTI)

surface. For protection, use UHV grade aluminum foil insteadof lint free paper. The UHV foil shall be essentially freeminutes handling according to UHV practice, cathode surface

Ekdahl, C.

2008-01-01T23:59:59.000Z

92

Graphene-based composites as cathode materials for lithium ion batteries  

Science Journals Connector (OSTI)

Owing to the superior mechanical, thermal, and electrical properties, graphene was a perfect candidate to improve the performance of lithium ion batteries. Herein, we review the recent advances in graphene-based composites and their application as cathode ...

Libao Chen; Ming Zhang; Weifeng Wei

2013-01-01T23:59:59.000Z

93

Batteries: Overview of Battery Cathodes  

SciTech Connect

The very high theoretical capacity of lithium (3829 mAh/g) provided a compelling rationale from the 1970's onward for development of rechargeable batteries employing the elemental metal as an anode. The realization that some transition metal compounds undergo reductive lithium intercalation reactions reversibly allowed use of these materials as cathodes in these devices, most notably, TiS{sub 2}. Another intercalation compound, LiCoO{sub 2}, was described shortly thereafter but, because it was produced in the discharged state, was not considered to be of interest by battery companies at the time. Due to difficulties with the rechargeability of lithium and related safety concerns, however, alternative anodes were sought. The graphite intercalation compound (GIC) LiC{sub 6} was considered an attractive candidate but the high reactivity with commonly used electrolytic solutions containing organic solvents was recognized as a significant impediment to its use. The development of electrolytes that allowed the formation of a solid electrolyte interface (SEI) on surfaces of the carbon particles was a breakthrough that enabled commercialization of Li-ion batteries. In 1990, Sony announced the first commercial batteries based on a dual Li ion intercalation system. These devices are assembled in the discharged state, so that it is convenient to employ a prelithiated cathode such as LiCoO{sub 2} with the commonly used graphite anode. After charging, the batteries are ready to power devices. The practical realization of high energy density Li-ion batteries revolutionized the portable electronics industry, as evidenced by the widespread market penetration of mobile phones, laptop computers, digital music players, and other lightweight devices since the early 1990s. In 2009, worldwide sales of Li-ion batteries for these applications alone were US$ 7 billion. Furthermore, their performance characteristics (Figure 1) make them attractive for traction applications such as hybrid electric vehicles (HEVs), plug-in hybrid electric vehicles (PHEVs), and electric vehicles (EVs); a market predicted to be potentially ten times greater than that of consumer electronics. In fact, only Liion batteries can meet the requirements for PHEVs as set by the U.S. Advanced Battery Consortium (USABC), although they still fall slightly short of EV goals. In the case of Li-ion batteries, the trade-off between power and energy shown in Figure 1 is a function both of device design and the electrode materials that are used. Thus, a high power battery (e.g., one intended for an HEV) will not necessarily contain the same electrode materials as one designed for high energy (i.e., for an EV). As is shown in Figure 1, power translates into acceleration, and energy into range, or miles traveled, for vehicular uses. Furthermore, performance, cost, and abuse-tolerance requirements for traction batteries differ considerably from those for consumer electronics batteries. Vehicular applications are particularly sensitive to cost; currently, Li-ion batteries are priced at about $1000/kWh, whereas the USABC goal is $150/kWh. The three most expensive components of a Li-ion battery, no matter what the configuration, are the cathode, the separator, and the electrolyte. Reduction of cost has been one of the primary driving forces for the investigation of new cathode materials to replace expensive LiCoO{sub 2}, particularly for vehicular applications. Another extremely important factor is safety under abuse conditions such as overcharge. This is particularly relevant for the large battery packs intended for vehicular uses, which are designed with multiple cells wired in series arrays. Premature failure of one cell in a string may cause others to go into overcharge during passage of current. These considerations have led to the development of several different types of cathode materials, as will be covered in the next section. Because there is not yet one ideal material that can meet requirements for all applications, research into cathodes for Li-ion batteries is, as of this writ

Doeff, Marca M

2010-07-12T23:59:59.000Z

94

Development of Advanced Diesel Particulate Filtration (DPF) Systems (ANL/Corning/Caterpillar CRADA)  

Energy.gov (U.S. Department of Energy (DOE))

2009 DOE Hydrogen Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting, May 18-22, 2009 -- Washington D.C.

95

Hot hollow cathode gun assembly  

DOE Patents (OSTI)

A hot hollow cathode deposition gun assembly includes a hollow body having a cylindrical outer surface and an end plate for holding an adjustable heat sink, the hot hollow cathode gun, two magnets for steering the plasma from the gun into a crucible on the heat sink, and a shutter for selectively covering and uncovering the crucible.

Zeren, J.D.

1983-11-22T23:59:59.000Z

96

Stabilized Spinel and Nano Olivine Cathodes  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

NANO OLIVINE STABILIZED SPINEL AND NANO OLIVINE CATHODES CATHODES ARUMUGAM MANTHIRAM Electrochemical Energy Laboratory (ECEL) Materials Science and Engineering Program The...

97

http://www.aps.anl.gov/aps/news/20030616.html  

NLE Websites -- All DOE Office Websites (Extended Search)

Technology Supports SSRL Sub-Picosecond Particle Source Technology Supports SSRL Sub-Picosecond Particle Source The SPPS multilayer monochromator designed and fabricated at the APS. (Courtesy of Stanford Synchrotron Radiation Laboratory) A new photon source, the Sub-Picosecond Particle Source (SPPS), that promises to image the movement of objects down to the atomic level in subpicosecond time scales will benefit from the contributions of the Advanced Photon Source, the Optics Fabrication and Metrology Group of Argonne's Experimental Facilities Division (XFD), and BioCARS (The University of Chicago). The SPPS is being constructed at the Stanford Synchrotron Radiation Laboratory (SSRL), part of the Stanford Linear Accelerator Center (SLAC) in California. According to the article on the SSRL Web site, the SPPS "will produce and deliver x-rays from bright electron beam pulses. This project provides a fast, relatively inexpensive way to

98

ANL-12/01 Surveillance of Site A and Plot M  

Office of Legacy Management (LM)

ANL-12/01 ANL-12/01 Surveillance of Site A and Plot M Report for 2011 Environment, Safety, and Quality Assurance Availability of This Report This report is available, at no cost, at http://www.osti.gov/bridge. It is also available on paper to the U.S. Department of Energy and its contractors, for a processing fee, from: U.S. Department of Energy Office of Scientific and Technical Information P.O. Box 62 Oak Ridge, TN 37831-0062 phone (865) 576-8401 fax (865) 576-5728 reports@adonis.osti.gov Disclaimer This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor UChicago Argonne, LLC, nor any of their employees or officers, makes any warranty, express

99

ANL=OHS/HP=83=102 FORMERLY UTILIZED MEDIAEC SITES REMEDIAL ACTION PROGRAM  

Office of Legacy Management (LM)

' DO E/EV=0005/40 ' DO E/EV=0005/40 ANL=OHS/HP=83=102 FORMERLY UTILIZED MEDIAEC SITES REMEDIAL ACTION PROGRAM RADIOLOGICAL SURVEY OF THE ALBANY METALLURGICAL RESEARCH CENTER UNITED STATES BUREAU OF MINES ALBANY, OREGON Q\OLO G/C G- 4& G ANL-OHS/HP-83-102 ARGONNE NATIONAL LABORATORY 9700 South Cass Avenue Argonne, Illinois 60439 FORMERLY UTILIZED MED/AEC SITES REMEDIAL ACTION PROGRAM RADIOLOGICAL SURVEY OF THE ALBANY METALLURGICAL RESEARCH CENTER

100

SHIELDING ESTIMATES FOR THE ANL 6.0 GeV SYNCHROTRON LIGHT SOURCE  

NLE Websites -- All DOE Office Websites (Extended Search)

SHIELDING ESTIMATES FOR THE ANL 6.0 GeV SHIELDING ESTIMATES FOR THE ANL 6.0 GeV SYNCHROTRON LIGHT SOURCE H. J. Moe V. R. Veluri LS-55-Revised Harch 1987 2 1.0 Introduction Shielding estimates for the linac, positron converter, booster synchrotron and the positron storage ring have been computed using preliminary design information. Calculations have been made of the resulting radiation for several types of operations involving normal beam loss, as well as, certain accidental beam losses. When available, experimental data from existing accelerator and light source facilities have been used in lieu of theoretical estimates. 2.0 Shielding Design Objective The Department of Energy's basic occupational exposure limit is 5 rem per year (DOE 81). However, in its guidance for maintaining exposures "as

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101

LG Chem, Argonne sign licensing deal to make, commercialize advanced...  

NLE Websites -- All DOE Office Websites (Extended Search)

LG Chem, Argonne sign licensing deal to make, commercialize advanced battery material By Angela Hardin * January 6, 2011 Tweet EmailPrint Patented cathode technology will help...

102

Stabilized Spinels and Polyanion Cathodes  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

process * Synthesis of nano-engineered alloy, carbon-decorated Fe 3 O 4 nanowire, and graphene anodes, but only results on the cathodes are given in the next 11 slides TECHNICAL...

103

Cold cathode vacuum discharge tube  

DOE Patents (OSTI)

A cold cathode vacuum discharge tube, and method for making same, with an interior surface of the trigger probe coated with carbon deposited by carbon vapor deposition (CVD) or diamond-like carbon (DLC) deposition. Preferably a solid graphite insert is employed in the probe-cathode structure in place of an aluminum bushing employed in the prior art. The CVD or DLC probe face is laser scribed to allow resistance trimming to match available trigger voltage signals and to reduce electrical aging.

Boettcher, Gordon E. (Albuquerque, NM)

1998-01-01T23:59:59.000Z

104

Design and Evaluation of Novel High Capacity Cathode Materials...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

High Capacity Cathodes Vehicle Technologies Office Merit Review 2014: Design and Evaluation of High Capacity Cathodes Design and Evaluation of Novel High Capacity Cathode Materials...

105

High Current Density, Long Life Cathodes for High Power RF Sources  

SciTech Connect

This program was tasked with improving the quality and expanding applications for Controlled Porosity Reservoir (CPR) cathodes. Calabazas Creek Research, Inc. (CCR) initially developed CPR cathodes on a DOE-funded SBIR program to improve cathodes for magnetron injection guns. Subsequent funding was received from the Defense Advanced Research Projects Agency. The program developed design requirements for implementation of the technology into high current density cathodes for high frequency applications. During Phase I of this program, CCR was awarded the prestigious 2011 R&D100 award for this technology. Subsequently, the technology was presented at numerous technical conferences. A patent was issued for the technology in 2009. These cathodes are now marketed by Semicon Associates, Inc. in Lexington, KY. They are the world’s largest producer of cathodes for vacuum electron devices. During this program, CCR teamed with Semicon Associates, Inc. and Ron Witherspoon, Inc. to improve the fabrication processes and expand applications for the cathodes. Specific fabrications issues included the quality of the wire winding that provides the basic structure and the sintering to bond the wires into a robust, cohesive structure. The program also developed improved techniques for integrating the resulting material into cathodes for electron guns.

Ives, Robert Lawrence [Calabazas Creek Research,, Inc.; Collins, George [Calabazas Creek Research, Inc.; Falce, Lou [Consultant; Schwartzkopf, Steve [Ron Witherspoon, Inc.; Busbaher, Daniel [Semicon Associates

2014-01-22T23:59:59.000Z

106

ANL-08/04 Surveillance of Site A and Plot M  

Office of Legacy Management (LM)

ANL-08/04 Surveillance of Site A and Plot M Report for 2007 Environment, Safety, and Health/Quality Assurance Oversight Division Disclaimer This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor UChicago Argonne, LLC, nor any of their employees or officers, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus,

107

Cathode Contact Materials for Anode-Supported Cell Development - Lawrence Berkeley National Laboratory  

NLE Websites -- All DOE Office Websites (Extended Search)

Cathode Contact Materials for Anode- Cathode Contact Materials for Anode- Supported Cell Development- Lawrence Berkeley National Laboratory Background The mission of the U.S. Department of Energy (DOE) National Energy Technology Laboratory (NETL) is to advance energy options to fuel our economy, strengthen our security, and improve our environment. With the Solid State Energy Conversion Alliance (SECA), NETL is leading the research, development, and demonstration of solid oxide

108

ANL Activities  

NLE Websites -- All DOE Office Websites (Extended Search)

Activities of the DOD Activities of the DOD Project Office focus today on the Navy's Free Electron Laser Program Argonne Accelerator Institute Meeting June 16, 2009 2 Several Beam Activities and Interests Ongoing  Terahertz sources and applications  Navy Free Electron Laser (Focus area today)  Free Electron Laser Applications  Electromagnetic Interference Technology Review Committees  Novel Fiber Optic Materials with Army Research Lab  Optical Diagnostics for next-generation light sources  Neutron detection schemes  NATO Sensors and Electronics Panel, international field tests of directed energy source applications  Controls  Radiation Oncology 3 Background, Naval Directed Energy History The U.S Navy has been investigating utility of lasers since the 1960's and the

109

ANL PAdmin  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Argonne National Laboratory Argonne National Laboratory OAS-M-04-01 March 2004 Competition and Property Protection Practices Details of Finding ........................................................................1 Recommendations and Comments .............................................4 Appendices 1. Objective, Scope, and Methodology ......................................6 2. Prior Reports ..........................................................................8 3. Management Comments ........................................................9 MANAGEMENT CONTROLS OVER SUBCONTRACT ADMINISTRATION BY THE ARGONNE NATIONAL LABORATORY TABLE OF CONTENTS Page 1 Competition and Property Protection Argonne National Laboratory (Argonne) did not always ensure adequate competition when procuring goods and services, awarded

110

Cathode Connector For Aluminum Low Temperature Smelting Cell  

DOE Patents (OSTI)

Cathode connector means for low temperature aluminum smelting cell for connecting titanium diboride cathode or the like to bus bars.

Brown, Craig W. (Seattle, WA); Beck, Theodore R. (Seattle, WA); Frizzle, Patrick B. (Seattle, WA)

2003-07-16T23:59:59.000Z

111

HIGHLY DISPERSED ALLOY CATHODE CATALYST FOR DURABILITY  

E-Print Network (OSTI)

Understanding high performance materials Pt/C cathode B.S.E. Pt PtCo/C cathode IrB.S.E. Pt Co PtIrCo/C cathodeHIGHLY DISPERSED ALLOY CATHODE CATALYST FOR DURABILITY T. D. Jarvi UTC Power Corporation Electrochemical Area Loss Activity at 900 mVRHE (IR-Free) 0.44 A/mg Pt Specific Activity at 900 m

112

High-current-density, high brightness cathodes for free electron laser applications  

SciTech Connect

This report discusses the following topics: brightness and emittance of electron beams and cathodes; general requirements for cathodes in high brightness electron guns; candidate cathode types; plasma and field emission cathodes; true field emission cathodes; oxide cathodes; lanthanum hexaborides cathodes; laser driven thermionic cathodes; laser driven photocathodes; impregnated porous tungsten dispenser cathodes; and choice of best performing cathode types.

Green, M.C. (Varian Associates, Palo Alto, CA (USA). Palo Alto Microwave Tube Div.)

1987-06-01T23:59:59.000Z

113

Note on RF Photo-Cathode Gun  

E-Print Network (OSTI)

E.R. Gray and P.M. Giles, "Photo-cathodes in AcceleratorProceedings Note on RF Photo-Cathode Gun K. -J. Kim August106 LBL-29538 Note on RF Photo-Cathode G un Kwang-Je Kim

Kim, Kwang-Je

2010-01-01T23:59:59.000Z

114

Remote control for anode-cathode adjustment  

DOE Patents (OSTI)

An apparatus for remotely adjusting the anode-cathode gap in a pulse power machine has an electric motor located within a hollow cathode inside the vacuum chamber of the pulse power machine. Input information for controlling the motor for adjusting the anode-cathode gap is fed into the apparatus using optical waveguides. The motor, controlled by the input information, drives a worm gear that moves a cathode tip. When the motor drives in one rotational direction, the cathode is moved toward the anode and the size of the anode-cathode gap is diminished. When the motor drives in the other direction, the cathode is moved away from the anode and the size of the anode-cathode gap is increased. The motor is powered by batteries housed in the hollow cathode. The batteries may be rechargeable, and they may be recharged by a photovoltaic cell in combination with an optical waveguide that receives recharging energy from outside the hollow cathode. Alternatively, the anode-cathode gap can be remotely adjusted by a manually-turned handle connected to mechanical linkage which is connected to a jack assembly. The jack assembly converts rotational motion of the handle and mechanical linkage to linear motion of the cathode moving toward or away from the anode.

Roose, Lars D. (Albuquerque, NM)

1991-01-01T23:59:59.000Z

115

Fluoride based cathodes and electrolytes for high energy thermal batteries  

SciTech Connect

A research and development program is being conducted at the Saft Advanced Technologies Division in Hunt Valley, MD to double the energy density of a thermal battery. A study of high voltage cathodes to replace iron disulfide is in progress. Single cells are being studied with a lithium anode and either a copper(II) fluoride, silver(II) fluoride, or iron(III) fluoride cathode. Due to the high reactivity of these cathodes, conventional alkali metal chloride and bromide salt electrolytes must be replaced by alkali metal fluoride electrolytes. Parametric studies using design-of-experiments matrices will be performed so that the best cathode for an improved battery design can be selected. Titanium hardware for the design will provide a higher strength to weight ratio with lower emissivity than conventional stainless steel. The battery will consist of two power sections. The goals are battery activation in less than 0.2 s, 88 Wh/kg, 1,385 W/kg, and 179 Wh/L over an environmental temperature range of {minus}40 C to +70 C.

Briscoe, J.D.

1998-07-01T23:59:59.000Z

116

Polyanionic Cathode-Active Materials  

Science Journals Connector (OSTI)

In the 1980s, the layered rock salt types LiCoO2 1 and LiNiO2 2 and spinel-type LiMn2O4 3 were successively proposed as 4-V class cathode-active materials by Goodenough's group...

Shigeto Okada; Jun-ichi Yamaki

2009-01-01T23:59:59.000Z

117

Magnetic-cusp, cathodic-arc source  

DOE Patents (OSTI)

A magnetic-cusp for a cathodic-arc source wherein the arc is confined to the desired cathode surface, provides a current path for electrons from the cathode to the anode, and utilizes electric and magnetic fields to guide ions from the cathode to a point of use, such as substrates to be coated. The magnetic-cusp insures arc stability by an easy magnetic path from anode to cathode, while the straight-through arrangement leads to high ion transmission. 3 figs.

Falabella, S.

1995-11-21T23:59:59.000Z

118

Theory, Investigation and Stability of Cathode Electrocatalytic Activity  

SciTech Connect

The main objective of this project is to systematically characterize the surface composition, morphology, and electro-catalytic properties of catalysts coated on LSCF, aiming to establish the scientific basis for rational design of high-performance cathodes by combining a porous backbone (such as LSCF) with a thin catalyst coating. The understanding gained will help us to optimize the composition and morphology of the catalyst layer and microstructure of the LSCF backbone for better performance. More specifically, the technical objectives include: (1) to characterize the surface composition, morphology, and electro-catalytic properties of catalysts coated on LSCF; (2) to characterize the microscopic details and stability of the LSCF-catalyst (e.g., LSM) interfaces; (3) to establish the scientific basis for rational design of high-performance cathodes by combining a porous backbone (such as LSCF) with a thin catalyst coating; and (4) to demonstrate that the performance and stability of porous LSCF cathodes can be enhanced by the application of a thin-film coating of LSM through a solution infiltration process in small homemade button cells and in commercially available cells of larger dimension. We have successfully developed dense, conformal LSM films with desired structure, composition, morphology, and thickness on the LSCF surfaces by two different infiltration processes: a non-aqueous and a water-based sol-gel process. It is demonstrated that the activity and stability of LSCF cathodes can be improved by the introduction of a thin-film LSM coating through an infiltration process. Surface and interface of the LSM-coated LSCF cathode were systematically characterized using advanced microscopy and spectroscopy techniques. TEM observation suggests that a layer of La and Sr oxide was formed on LSCF surfaces after annealing. With LSM infiltration, in contrast, we no longer observe such La/Sr oxide layer on the LSM-coated LSCF samples after annealing under similar conditions. This was also confirmed by x-ray analyses. For example, soft x-ray XANES data reveal that Co cations displace the Mn cations as being more favored to be reduced. Variations in the Sr-O in the annealed LSCF Fourier-transformed (FT) EXAFS suggest that some Sr segregation is occurring, but is not present in the annealed LSM-infiltrated LSCF cathode materials. Further, a surface enhanced Raman technique was also developed into to probe and map LSM and LSCF phase on underlying YSZ substrate, enabling us to capture important chemical information of cathode surfaces under practical operating conditions. Electrochemical models for the design of test cells and understanding of mechanism have been developed for the exploration of fundamental properties of electrode materials. Novel catalyst coatings through particle depositions (SDC, SSC, and LCC) or continuous thin films (PSM and PSCM) were successfully developed to improve the activity and stability of LSCF cathodes. Finally, we have demonstrated enhanced activity and stability of LSCF cathodes over longer periods of time in homemade and commercially available cells by an optimized LSM infiltration process. Microstructure examination of the tested cells did not show obvious differences between blank and infiltrated cells, suggesting that the infiltrated LSM may form a coherent film on the LSCF cathodes. There was no significant change in the morphology or microstructure of the LSCF cathode due to the structural similarity of LSCF and LSM. Raman analysis of the tested cells indicated small peaks emerging on the blank cells that correspond to trace amounts of secondary phase formation during operation (e.g., CoO{sub x}). The formation of this secondary phase might be attributed to performance degradation. In contrast, there was no such secondary phase observed in the LSM infiltrated cells, indicating that the LSM modification staved off secondary phase formation and thus improved the stability.

Ding, Dong; Liu, Mingfei; Lai, Samson; Blinn, Kevin; Liu, Meilin

2012-09-30T23:59:59.000Z

119

LOW TEMPERATURE CATHODE SUPPORTED ELECTROLYTES  

SciTech Connect

This project has three main goals: Thin Films Studies, Preparation of Graded Porous Substrates and Basic Electrical Characterization and testing of Planar Single Cells. This period has continued to address the problem of making dense 1/2 to 5 {micro}m thick dense layers on porous substrates (the cathode LSM). Our current status is that we are making structures of 2-5 cm{sup 2} in area, which consist of either dense YSZ or CGO infiltrated into a 2-5 {micro}m thick 50% porous layer made of either nanoncrystalline CGO or YSZ powder. This composite structure coats a macroporous cathode or anode; which serves as the structural element of the bi-layer structure. These structures are being tested as SOFC elements. A number of structures have been evaluated both as symmetrical and as button cell configuration. Results of this testing indicates that the cathodes contribute the most to cell losses for temperatures below 750 C. In this investigation different cathode materials were studied using impedance spectroscopy of symmetric cells and IV characteristics of anode supported fuel cells. Cathode materials studied included La{sub 0.8}Sr{sub 0.2}Co{sub 0.2}Fe{sub 0.8}O{sub 3} (LSCF), La{sub 0.7}Sr{sub 0.2}MnO{sub 3} (LSM), Pr{sub 0.8}Sr{sub 0.2}Fe{sub 0.8}O{sub 3} (PSCF), Sm{sub 0.8}Sr{sub 0.2}Co{sub 0.2}Fe{sub 0.8}O{sub 3} (SSCF), and Yb{sub .8}Sr{sub 0.2}Co{sub 0.2}Fe{sub 0.8}O{sub 3} (SSCF). A new technique for filtering the Fourier transform of impedance data was used to increase the sensitivity of impedance analysis. By creating a filter specifically for impedance spectroscopy the resolution was increased. The filter was tailored to look for specific circuit elements like R//C, Warburg, or constant phase elements. As many as four peaks can be resolved using the filtering technique on symmetric cells. It may be possible to relate the different peaks to material parameters, like the oxygen exchange coefficient. The cathode grouped in order from lowest to highest ASR is LSCF < PSCF < SSCF < YSCF < LSM. The button cell results agree with this ordering indicating that this is an important tool for use in developing our understanding of electrode behavior in fuel cells.

Harlan U. Anderson; Fatih Dogan; Vladimir Petrovsky

2002-03-31T23:59:59.000Z

120

ANL/MCS-TM-331 Mathematics and Computer Science Division Availability of This Report  

NLE Websites -- All DOE Office Websites (Extended Search)

Performance Analysis of Darshan 2.2.3 Performance Analysis of Darshan 2.2.3 on the Cray XE6 Platform ANL/MCS-TM-331 Mathematics and Computer Science Division Availability of This Report This report is available, at no cost, at http://www.osti.gov/bridge. It is also available on paper to the U.S. Department of Energy and its contractors, for a processing fee, from: U.S. Department of Energy Office of Scientific and Technical Information P.O. Box 62 Oak Ridge, TN 37831-0062 phone (865) 576-8401 fax (865) 576-5728 reports@adonis.osti.gov Disclaimer This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor UChicago Argonne, LLC, nor any of their employees or officers, makes any warranty, express

Note: This page contains sample records for the topic "advanced anl cathode" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

DOE/EV-0005/26 ANL-OHS/HP-82-100  

Office of Legacy Management (LM)

J-L.f!~: J-L.f!~: r*' c;,:i &3&j DOE/EV-0005/26 ANL-OHS/HP-82-100 i$; ' ,\ : -ed - *' J&&&g y FORMERLY UTILIZED MED/AEC SITES REMEDIAL ACTION PROGRAM RADIOLOGICAL SURVEY OF THE GEORGE HERBERT JONES CHEMICAL LABORATORY THE UNIVERSITY OF CHICAGO CHICAGO, ILLINOIS June 1347, 1977 OCCUPATIONAL HEALTH AND SAFETY DIVISION Health Physics Section ARGONNE NATIONAL LABORATORY, ARGONNE, ILLINOIS Prepared for the U. S. DEPARTMENT OF ENERGY under Contract W -31409-Eng=38 The facilities of Argonne National Laboratory are owned by the United States Government. Under the terms of a contract (W-31-109-Eng-38) among the U. S. Department of Energy, Argonne Universities Association and The University of Chicago, the University employs the staff and operates the Laboratory in

122

ANL/NE-13/9 SHARP Assembly-Scale Multiphysics Demonstration  

NLE Websites -- All DOE Office Websites (Extended Search)

NE-13/9 NE-13/9 SHARP Assembly-Scale Multiphysics Demonstration Simulations Mathematics and Computation Division & Nuclear Engineering Division About Argonne National Laboratory Argonne is a U.S. Department of Energy laboratory managed by UChicago Argonne, LLC under contract DE-AC02-06CH11357. The Laboratory's main facility is outside Chicago, at 9700 South Cass Avenue, Argonne, Illinois 60439. For information about Argonne and its pioneering science and technology programs, see www.anl.gov. Availability of This Report This report is available, at no cost, at http://www.osti.gov/bridge. It is also available on paper to the U.S. Department of Energy and its contractors, for a processing fee, from: U.S. Department of Energy Office of Scientific and Technical Information

123

DOEIEV-0005/37 ANL=OHS/HP-83406 FORMERLY UTILIZED MEDIAEC SITES  

Office of Legacy Management (LM)

//, .<.' //, .<.' I ' 1 TL\ t+, -- DOEIEV-0005/37 ANL=OHS/HP-83406 FORMERLY UTILIZED MEDIAEC SITES REMEDIAL ACTION PROGRAM RADIOLOGICAL SURVEY OF THE FORMER WATERTOWN ARSENAL PROPERTY SITE 34 AND SITE 41 WATERTOWN, MASSACHUSETTS o\o\-0 G /Q e-+ a+ -? q+ mii ' ( . % QL G+ OCCUPATIONAL HEALTH AND SAFETY INViSiON Health Physics Section ARGONNE NATIONAL LABORATORY, ARGONNE, ILLINOIS Operated by THE UNIVERSITY O F CHICAGO for the U. S. DEPARTMENT O F ENERGY under Contract W=314 09.Eng-38 Argonne National Laboratory, with facilities in the states of Illinois and Idaho, is owned by the United States government, and operated by The University of Chicago under the provisions of a contract with the Department of Energy. r----- DISCLAIMER I This report was prepared as an account of work sponsored by an

124

ANL/ALCF/ESP-13/14 NAMD - The Engine for Large-Scale Classical MD  

NLE Websites -- All DOE Office Websites (Extended Search)

4 4 NAMD - The Engine for Large-Scale Classical MD Simulations of Biomolecular Systems Based on a Polarizable Force Field ALCF-2 Early Science Program Technical Report Argonne Leadership Computing Facility About Argonne National Laboratory Argonne is a U.S. Department of Energy laboratory managed by UChicago Argonne, LLC under contract DE-AC02-06CH11357. The Laboratory's main facility is outside Chicago, at 9700 South Cass Avenue, Argonne, Illinois 60439. For information about Argonne and its pioneering science and technology programs, see www.anl.gov. Availability of This Report This report is available, at no cost, at http://www.osti.gov/bridge. It is also available on paper to the U.S. Department of Energy and its contractors, for a processing fee, from:

125

Analysis of the KUCA MEU experiments using the ANL code system  

SciTech Connect

This paper provides some preliminary results on the analysis of the KUCA critical experiments using the ANL code system. Since this system was employed in the earlier neutronics calculations for the KUHFR, it is important to assess its capabilities for the KUHFR. The KUHFR has a unique core configuration which is difficult to model precisely with current diffusion theory codes. This paper also provides some results from a finite-element diffusion code (2D-FEM-KUR), which was developed in a cooperative research program between KURRI and JAERI. This code provides the capability for mockup of a complex core configuration as the KUHFR. Using the same group constants generated by the EPRI-CELL code, the results of the 2D-FEM-KUR code are compared with the finite difference diffusion code (DIF3D(2D) which is mainly employed in this analysis.

Shiroya, S.; Hayashi, M.; Kanda, K.; Shibata, T.; Woodruff, W.L.; Matos, J.E.

1982-01-01T23:59:59.000Z

126

JUPITER-II Program: ANL analysis of ZPPR-13A and ZPPR-13B  

SciTech Connect

The ZPPR-13 experiments provide basic physics data for radial heterogeneous LMFBR cores of approximately 700MWe size. Assemblies ZPPR-13A, ZPPR-13B and ZPPR-13A comprised the JUPITER-II cooperative program between the U.S. Department of Energy (US DOE) and PNC of Japan. The measurements were made between August 1982 and April 1984. The core designs and the measurements were planned jointly by the two parties with substantial input from U.S. industrial interests to ensure coverage of the design requirements. This report describes in detail the results of the Argonne National Laboratory (ANL) analyses of phases 13A and 13B/1 and includes preliminary results for the later assemblies of phase 13B..

Collins, P.J.; Brumbach, S.B. [comps.

1984-08-01T23:59:59.000Z

127

Microsoft Word - ANL_L2_ST Exp_093013_R2  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Campaign Campaign Embrittlement and DBTT of High- Burnup PWR Fuel Cladding Alloys Prepared for U.S. Department of Energy Used Fuel Disposition Campaign M.C. Billone, T.A. Burtseva, Z. Han and Y.Y. Liu Argonne National Laboratory September 30, 2013 FCRD-UFD-2013-000401 ANL-13/16 DISCLAIMER This information was prepared as an account of work sponsored by an agency of the U.S. Government. Neither the U.S. Government nor any agency thereof, nor any of their employees, makes any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness, of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. References herein

128

Analysis of the ANL Test Method for 6CVS Containment Vessels  

SciTech Connect

In the fall of 2010, Argonne National Laboratory (ANL) contracted with vendors to design and build 6CVS containment vessels as part of their effort to ship Fuel Derived Mixed Fission Product material. The 6CVS design is based on the Savannah River National Laboratory's (SRNL) design for 9975 and 9977 six inch diameter containment vessels. The main difference between the designs is that the 6CVS credits the inner O-ring seal as the containment boundary while the SRNL design credits the outer O-ring seal. Since the leak test must be done with the inner O-ring in place, the containment vessel does not have a pathway for getting the helium into the vessel during the leak test. The leak testing contractor was not able to get acceptable leak rates with the specified O-ring, but they were able to pass the leak test with a slightly larger O-ring. ANL asked the SRNL to duplicate the leak test vendor's method to determine the cause of the high leak rates. The SRNL testing showed that the helium leak indications were caused by residual helium left within the 6CVS Closure Assembly by the leak test technique, and by helium permeation through the Viton O-ring seals. After SRNL completed their tests, the leak testing contractor was able to measure acceptable leak rates by using the slightly larger O-ring size, by purging helium from the lid threads, and by being very quick in getting the bell jar under a full vacuum. This paper describes the leak test vendor's test technique, and other techniques that could be have been used to successfully leak test the 6CVS's.

Trapp, D.; Crow, G.

2011-06-06T23:59:59.000Z

129

Argonne National Laboratory Partners with Advanced Magnet Lab to Develop First Fully Superconducting Direct-Drive Generator  

Energy.gov (U.S. Department of Energy (DOE))

The Department of Energy (DOE) Argonne National Laboratory (ANL) is partnering with Advanced Magnet Lab, in Palm Bay, Florida, on one of six projects recently awarded by DOE to help develop next generation wind turbines and accelerate the deployment of advanced turbines for offshore wind energy in the United States.

130

Filters for cathodic arc plasmas  

DOE Patents (OSTI)

Cathodic arc plasmas are contaminated with macroparticles. A variety of magnetic plasma filters has been used with various success in removing the macroparticles from the plasma. An open-architecture, bent solenoid filter, with additional field coils at the filter entrance and exit, improves macroparticle filtering. In particular, a double-bent filter that is twisted out of plane forms a very compact and efficient filter. The coil turns further have a flat cross-section to promote macroparticle reflection out of the filter volume. An output conditioning system formed of an expander coil, a straightener coil, and a homogenizer, may be used with the magnetic filter for expanding the filtered plasma beam to cover a larger area of the target. A cathodic arc plasma deposition system using this filter can be used for the deposition of ultrathin amorphous hard carbon (a-C) films for the magnetic storage industry.

Anders, Andre (Albany, CA); MacGill, Robert A. (Richmond, CA); Bilek, Marcela M. M. (Engadine, AU); Brown, Ian G. (Berkeley, CA)

2002-01-01T23:59:59.000Z

131

Lighting Group: Sources and Ballasts: OLED Cathodes  

NLE Websites -- All DOE Office Websites (Extended Search)

OLED Cathodes OLED Cathodes Development of New Cathodes for OLED's Objective The objective of this project is to develop improved cathodes for use in organic light emitting diodes (OLEDs). Approach A major challenge for organic light emitting diode (OLED) technology is to improve electron injection into the organic electroluminescent layer, which limits the efficiency of the device and the luminous flux per unit area. This project aims at overcoming such barriers by developing “structured cathodes” based on functional materials (nanotubes and nanoclusters) with characteristic size smaller than the optical wavelength. The incorporation of such nanostructured cathodes in OLEDs can significantly improve device efficiency by lowering operating voltage, and increase device stability and light extraction.

132

Intermittent cathodic protection using solar power  

SciTech Connect

An intermittent impressed current cathodic protection technique using photovoltaic energy was evaluated to determine it`s ability to protect bridge concrete piles in marine environments against corrosion. The technique uses commercially available anode systems to deliver the cathodic protection current to the concrete and onto the reinforcing steel. Cathodic protection current is only applied during the daytime hours. The magnitude of the applied current was based on sunlight availability. An evaluation was conducted on laboratory specimens as well as in the field. The laboratory work was performed on steel reinforced concrete specimens placed in simulated salt water tanks. For the field evaluation, ten prestressed concrete piles of a bridge structure with an existing rectifier powered cathodic protection system were used. In both cases, intermittent cathodic protection was provided. Polarization and depolarization of the steel reinforcement as well as the protection current delivered were monitored to evaluate the cathodic protection performance as well as the behavior of periodic polarization-depolarization.

Kessler, R.J.; Powers, R.G.; Lasa, I.R. [Florida Dept. of Transportation, Gainesville, FL (United States). Corrosion Research Lab.

1998-12-31T23:59:59.000Z

133

Sun powers Libya cathodic-protection system  

SciTech Connect

Well castings and part of the main 300-mile-long, 32-in diameter pipeline from Sarir to Tobruk are cathodically protected by solar power, which prevents galvanic action by applying an electric direct current of appropriate magnitude and polarity to the steel structures. They then act as cathodes and become the recipients of metallic ions. At each cathodic-protection station, the solar-generaor system consists of solar-panel arrays, electronic controls, and batteries.

Currer, G.W.

1982-03-22T23:59:59.000Z

134

AC corrosion on cathodically protected steel.  

E-Print Network (OSTI)

?? This report deals with the effect of alternating current on cathodically protected steel. AC corrosion has become relevant in the offshore industry due to… (more)

Torstensen, Andreas

2012-01-01T23:59:59.000Z

135

Highly Dispersed Alloy Cathode Catalyst for Durability  

Energy.gov (U.S. Department of Energy (DOE))

This presentation, which focuses on alloy cathode catalysts, was given by T. D. Jarvi of UTC Power at a February 2007 meeting on new fuel cell projects.

136

HIGH-VOLTAGE SPINEL AND POLYANION CATHODES  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

POLYANION CATHODES ARUMUGAM MANTHIRAM Electrochemical Energy Laboratory (ECEL) Materials Science and Engineering Program The University of Texas at Austin May 14, 2012 Project ID...

137

A analysis of the cathode coupled amplifier  

E-Print Network (OSTI)

AN ANALySIS 0 TH CATHODE COOFL D ~iPLIPIER A Thesis by FORREST JACKS RETLING-. . R Approved as to style and content by: Chairman of Committee 'Head of Department August, 1951 AN ANALYSIS OF THE CATHODE COUPLED. AMPLIFIER by FORHEST JAMES.... The Cathode-Coupled Amplif 1er Circuit 2. The Cathode-Coupled Amplif ier Circuit shnwing a. c. components only 3. The Approximate A. C. Fquivalent, Circuit Page 17 4 ~ Aoproximate Equivalent C1rcu its f' or Calculating Output Impedances 22 5...

Hetlinger, Forrest James

2012-06-07T23:59:59.000Z

138

Novel Composite Cathode Structures | Department of Energy  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

and Vehicle Technologies Program Annual Merit Review and Peer Evaluation es115johnson2011p.pdf More Documents & Publications Novel Composite Cathode Structures Vehicle...

139

Novel Composite Cathode Structures | Department of Energy  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting es115johnson2012o.pdf More Documents & Publications Novel Composite Cathode Structures...

140

Modeling a short dc discharge with thermionic cathode and auxiliary anode E. Bogdanov, V. I. Demidov, I. D. Kaganovich, M. E. Koepke, and A. A. Kudryavtsev  

E-Print Network (OSTI)

-authors of this paper, to advance nonlocal plasma research. Explaining and utilizing cathode fall, negative glow, anode in a high-voltage discharge. This approach is being applied currently in plasma engineering research

Kaganovich, Igor

Note: This page contains sample records for the topic "advanced anl cathode" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Performance Degradation of LSCF Cathodes  

SciTech Connect

This final report summarizes the progress made during the October 1, 2008 - September 30, 2013 period under Cooperative Agreement DE-NT0004109 for the U. S. Department of Energy/National Energy Technology Laboratory (USDOE/NETL) entitled “Performance Degradation of LSCF Cathodes”. The primary objective of this program is to develop a performance degradation mitigation path for high performing, cost-effective solid oxide fuel cells (SOFCs). Strategies to mitigate performance degradation are developed and implemented. In addition, thermal spray manufacturing of SOFCs is explored. Combined, this work establishes a basis for cost-effective SOFC cells.

Alinger, Matthew

2013-09-30T23:59:59.000Z

142

Cathodic Arc Deposition of Copper Oxide Thin Films  

E-Print Network (OSTI)

plasma source with a copper cathode was operated in an oxygen atmosphereplasma source with a copper cathode in an oxygen atmosphere.plasma source with a copper cathode (5 cm diameter) operated in an oxygen atmosphere.

MacGill, R.A.

2011-01-01T23:59:59.000Z

143

NANOWIRE CATHODE MATERIAL FOR LITHIUM-ION BATTERIES  

SciTech Connect

This project involved the synthesis of nanowire ã-MnO2 and characterization as cathode material for high-power lithium-ion batteries for EV and HEV applications. The nanowire synthesis involved the edge site decoration nanowire synthesis developed by Dr. Reginald Penner at UC Irvine (a key collaborator in this project). Figure 1 is an SEM image showing ã-MnO2 nanowires electrodeposited on highly oriented pyrolytic graphite (HOPG) electrodes. This technique is unique to other nanowire template synthesis techniques in that it produces long (>500 um) nanowires which could reduce or eliminate the need for conductive additives due to intertwining of fibers. Nanowire cathode for lithium-ion batteries with surface areas 100 times greater than conventional materials can enable higher power batteries for electric vehicles (EVs) and hybrid electric vehicles (HEVs). The synthesis of the ã-MnO2 nanowires was successfully achieved. However, it was not found possible to co-intercalate lithium directly in the nanowire synthesis. Based on input from proposal reviewers, the scope of the project was altered to attempt the conversion into spinel LiMn2O4 nanowire cathode material by solid state reaction of the ã-MnO2 nanowires with LiNO3 at elevated temperatures. Attempts to perform the conversion on the graphite template were unsuccessful due to degradation of the graphite apparently caused by oxidative attack by LiNO3. Emphasis then shifted to quantitative removal of the nanowires from the graphite, followed by the solid state reaction. Attempts to quantitatively remove the nanowires by several techniques were unsatisfactory due to co-removal of excess graphite or poor harvesting of nanowires. Intercalation of lithium into ã-MnO2 electrodeposited onto graphite was demonstrated, showing a partial demonstration of the ã-MnO2 material as a lithium-ion battery cathode material. Assuming the issues of nanowires removal can be solved, the technique does offer potential for creating high-power lithium-ion battery cathode needed for advanced EV and HEVs. Several technical advancements will still be required to meet this goal, and are likely topics for future SBIR feasibility studies.

John Olson, PhD

2004-07-21T23:59:59.000Z

144

Cathodes  

Energy.gov (U.S. Department of Energy (DOE))

2010 DOE Vehicle Technologies and Hydrogen Programs Annual Merit Review and Peer Evaluation Meeting, June 7-11, 2010 -- Washington D.C.

145

Non-Platinum Bimetallic Cathode Electrocatalysts  

E-Print Network (OSTI)

Non-Platinum Bimetallic Cathode Electrocatalysts Debbie Myers ­ Argonne National Laboratory-platinum cathode electrocatalyst for polymer electrolyte fuel cells to meet DOE targets that: ­ Promotes the direct not contain any proprietary or confidential information #12;Objective and Technical Targets Develop a non

146

Review of recent ANL safety experiments in SLSF and TREAT. [LMFBR  

SciTech Connect

Among the recent significant in-pile experiments conducted by ANL are Sodium Loop Safety Facility (SLSF) experiment P4 in the Engineering Test Facility (ETR) and TREAT experiments F3, F4, and J1. The P4 experiment, which had three heat-generating flow blockages each installed in six coolant channels in a 37-pin bundle of FTR (Fast Test Reactor)-type fuel elements, investigated the bounding consequences of severe local faults. The principal objectives were to eject molten fuel into the bundle geometry and, during subsequent extended operation, to characterize the behavior of (and response of instrumentation to) any subsequent blockage growth; secondary objectives included characterizing the severity of any molten-fuel/coolant interaction and the response of the coolant. The F3 and F4 experiments in TREAT were phenomenological tests to study the fuel-column disruption mode in loss-of-flow accidents. The J1 experiment was the first slow period (approx. 10 s) transient overpower experiment done in TREAT. Results of these experiments will be presented.

Klickman, A.E.; Thompson, D.H.; Ragland, W.A.; Wright, A.E.; Palm, R.G.; Page, R.J.

1982-01-01T23:59:59.000Z

147

Process for Low Cost Domestic Production of LIB Cathode Materials...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Process for Low Cost Domestic Production of LIB Cathode Materials Process for Low Cost Domestic Production of LIB Cathode Materials 2010 DOE Vehicle Technologies and Hydrogen...

148

Additives and Cathode Materials for High-Energy Lithium Sulfur...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Additives and Cathode Materials for High-Energy Lithium Sulfur Batteries Additives and Cathode Materials for High-Energy Lithium Sulfur Batteries 2013 DOE Hydrogen and Fuel Cells...

149

Sulfur@Carbon Cathodes for Lithium Sulfur Batteries > Research...  

NLE Websites -- All DOE Office Websites (Extended Search)

Electrode Channel Flow DEMS Cell Sulfur@Carbon Cathodes for Lithium Sulfur Batteries Better Ham & Cheese: Enhanced Anodes and Cathodes for Fuel Cells Epitaxial Single...

150

Conflicting Roles Of Nickel In Controlling Cathode Performance...  

NLE Websites -- All DOE Office Websites (Extended Search)

Conflicting Roles Of Nickel In Controlling Cathode Performance In Lithium-ion Batteries. Conflicting Roles Of Nickel In Controlling Cathode Performance In Lithium-ion Batteries....

151

Cathode Synthesis and Voltage Fade: Designed Solutions Based...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Cathode Synthesis and Voltage Fade: Designed Solutions Based on Theory Cathode Synthesis and Voltage Fade: Designed Solutions Based on Theory 2013 DOE Hydrogen and Fuel Cells...

152

Degradation of Ionic Pathway in PEM Fuel Cell Cathode. | EMSL  

NLE Websites -- All DOE Office Websites (Extended Search)

Degradation of Ionic Pathway in PEM Fuel Cell Cathode. Degradation of Ionic Pathway in PEM Fuel Cell Cathode. Abstract: The degradation of the ionic pathway throughout the catalyst...

153

Development of High-Capacity Cathode Materials with Integrated...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Development of High-Capacity Cathode Materials with Integrated Structures Development of High-Capacity Cathode Materials with Integrated Structures 2013 DOE Hydrogen and Fuel Cells...

154

Design and Evaluation of Novel High Capacity Cathode Materials...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Design and Evaluation of Novel High Capacity Cathode Materials Design and Evaluation of Novel High Capacity Cathode Materials 2009 DOE Hydrogen Program and Vehicle Technologies...

155

Development of high-capacity cathode materials with integrated...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Development of high-capacity cathode materials with integrated structures Development of high-capacity cathode materials with integrated structures 2009 DOE Hydrogen Program and...

156

High Energy Materials for PHEVs: Cathodes (New Project) | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Energy Materials for PHEVs: Cathodes (New Project) High Energy Materials for PHEVs: Cathodes (New Project) Presentation from the U.S. DOE Office of Vehicle Technologies "Mega"...

157

Design and Evaluation of Novel High Capacity Cathode Materials...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

and Evaluation of Novel High Capacity Cathode Materials Design and Evaluation of Novel High Capacity Cathode Materials 2011 DOE Hydrogen and Fuel Cells Program, and Vehicle...

158

Cathode Effects in Cylindrical Hall Thrusters  

SciTech Connect

Stable operation of a cylindrical Hall thruster (CHT) has been achieved using a hot wire cathode, which functions as a controllable electron emission source. It is shown that as the electron emission from the cathode increases with wire heating, the discharge current increases, the plasma plume angle reduces, and the ion energy distribution function shifts toward higher energies. The observed effect of cathode electron emission on thruster parameters extends and clarifies performance improvements previously obtained for the overrun discharge current regime of the same type of thruster, but using a hollow cathode-neutralizer. Once thruster discharge current saturates with wire heating, further filament heating does not affect other discharge parameters. The saturated values of thruster discharge parameters can be further enhanced by optimal placement of the cathode wire with respect to the magnetic field.

Granstedt, E.M.; Raitses, Y.; Fisch, N. J.

2008-09-12T23:59:59.000Z

159

Cathode for an electrochemical cell  

DOE Patents (OSTI)

Described is a thin-film battery, especially a thin-film microbattery, and a method for making same having application as a backup or primary integrated power source for electronic devices. The battery includes a novel electrolyte which is electrochemically stable and does not react with the lithium anode and a novel vanadium oxide cathode. Configured as a microbattery, the battery can be fabricated directly onto a semiconductor chip, onto the semiconductor die or onto any portion of the chip carrier. The battery can be fabricated to any specified size or shape to meet the requirements of a particular application. The battery is fabricated of solid state materials and is capable of operation between -15.degree. C. and 150.degree. C.

Bates, John B. (Oak Ridge, TN); Dudney, Nancy J. (Knoxville, TN); Gruzalski, Greg R. (Oak Ridge, TN); Luck, Christopher F. (Knoxville, TN)

2001-01-01T23:59:59.000Z

160

Nickel-Cathoded Perovskite Solar Cells  

Science Journals Connector (OSTI)

Nickel-Cathoded Perovskite Solar Cells ... Current lead halide perovskite solar cells use high work function (?) precious metals, such as gold (? = 5.1 eV), as the back cathode to maximize the attainable photovoltage. ... We report herein a set of perovskite-type solar cells that use nickel (? = 5.04 eV), an earth-abundant element and non-precious metal, as back cathode and achieve the same open-circuit voltage as gold and an efficiency of 10.4%. ...

Qinglong Jiang; Xia Sheng; Bing Shi; Xinjian Feng; Tao Xu

2014-10-22T23:59:59.000Z

Note: This page contains sample records for the topic "advanced anl cathode" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

K2CsSb Cathode Development  

SciTech Connect

K{sub 2}CsSb is an attractive photocathode for high current applications. With a quantum efficiency of >4% at 532nm and >10% at 355nm, it is the only cathode to have demonstrated an average current of 35mA in an accelerator environment We describe ongoing cathode development work. for the energy recovery linac being constructed at BNL Several cathodes have been created on both copper and stainless steel substrates, and their spatial uniformity and spectral response have been characterized. Preliminary lifetime measurements have been performed at high average current densities (>1 mA/mm{sup 2}).

Smedley,J.; Rao, T.; Wang, E.

2008-10-01T23:59:59.000Z

162

Cells having cathodes containing polycarbon disulfide materials  

DOE Patents (OSTI)

The present invention relates to an electric current producing cell which contains an anode, a cathode having as a cathode-active material one or more carbon-sulfur compounds of the formula (CS.sub.x).sub.n, in which x takes values from 1.2 to 2.3 and n is greater or equal to 2, and where the redox process does not involve polymerization and de-polymerization by forming and breaking S--S bonds in the polymer backbone. The cell also contains an electrolyte which is chemically inert with respect to the anode and the cathode.

Okamoto, Yoshi (Fort Lee, NJ); Skotheim, Terje A. (Shoreham, NY); Lee, Hung S. (Rocky Point, NY)

1995-08-15T23:59:59.000Z

163

Cells having cathodes containing polycarbon disulfide materials  

DOE Patents (OSTI)

The present invention relates to an electric current producing cell which contains an anode, a cathode having as a cathode-active material one or more carbon-sulfur compounds of the formula (CS{sub x}){sub n}, in which x takes values from 1.2 to 2.3 and n is greater or equal to 2, and where the redox process does not involve polymerization and de-polymerization by forming and breaking S--S bonds in the polymer backbone. The cell also contains an electrolyte which is chemically inert with respect to the anode and the cathode. 5 figs.

Okamoto, Y.; Skotheim, T.A.; Lee, H.S.

1995-08-15T23:59:59.000Z

164

Interaction of cathode plasma with the cathode surface in an electron source with explosive electron emission  

Science Journals Connector (OSTI)

The interaction of the plasma formed at emission centers of an electron source using explosive electron emission with the cathode surface is studied....

É. N. Abdullin; G. P. Bazhenov

1981-11-01T23:59:59.000Z

165

Cathode applications to high-current diodes  

SciTech Connect

A principal limitation of pulse length for high electron current density diodes is the gap closure due to plasma propagation. This closure is due to plasma formed on the cathode and anode in the process of explosive field emission created by the required high field stresses of the high current diode. Experimental results of high current density T-F'' cathode and a plasma cathode will be presented. Current densities of greater than 300 A/cm2 were obtained for pulse lengths of 3 {mu}sec. Typical closure velocities were less than 2 mm/usec compared with the typical 2 cm/{mu}sec for explosive emission cathodes. 4 refs., 7 figs.

Pincosy, P.A.; Poulsen, P.; Greenwood, D.

1990-05-31T23:59:59.000Z

166

Development of High Energy Cathode Materials  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

deposits). Al-coated cell can is suitable for high-voltage cathodes. Polyethylene-based separators (such as Celgard K1640) are stable at high V. Carbon Additives...

167

Non-Platinum Bimetallic Cathode Electrocatalysts  

Energy.gov (U.S. Department of Energy (DOE))

This presentation, which focuses on non-platinum bimetallic cathode electrocatalysts, was given by Debbie Myers of Argonne National Laboratory at a February 2007 meeting on new fuel cell projects.

168

Engineering of High Energy Cathode Materials  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Engineering of High energy cathode material K. Amine (PI) H. Wu, I. Belharouak, Y.K. Sun Argonne National Laboratory DOE merit review May 14-18 , 2012 This presentation does not...

169

Advanced Cathode Material Development for PHEV Lithium Ion Batteries  

Energy.gov (U.S. Department of Energy (DOE))

2011 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer Evaluation

170

Advanced Cathode Material Development for PHEV Lithium Ion Batteries  

Energy.gov (U.S. Department of Energy (DOE))

2010 DOE Vehicle Technologies and Hydrogen Programs Annual Merit Review and Peer Evaluation Meeting, June 7-11, 2010 -- Washington D.C.

171

Process Development and Scale-up of Advanced Cathode Materials  

Energy.gov (U.S. Department of Energy (DOE))

2013 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting

172

Process Development and Scale-up of Advanced Cathode Materials  

Energy.gov (U.S. Department of Energy (DOE))

2012 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting

173

Development of Ultra-Low Platinum Alloy Cathode Catalyst for PEM Fuel Cells - DOE Hydrogen and Fuel Cells Program FY 2012 Annual Progress Report  

NLE Websites -- All DOE Office Websites (Extended Search)

3 3 FY 2012 Annual Progress Report DOE Hydrogen and Fuel Cells Program Branko N. Popov University of South Carolina (USC) 301 Main Street Columbia, SC 29208 Phone: (803) 777-7314 Email: popov@cec.sc.edu DOE Managers HQ: Donna Lee Ho Phone: (202) 586-8000 Email: Donna.Ho@ee.doe.gov GO: David Peterson Phone: (720) 356-1747 Email: David.Peterson@go.doe.gov Technical Advisor Thomas Benjamin Phone: (630) 252-1632 Email: benjamin@anl.gov Contract Number: DE-EE0000460 Subcontractor: Dr. Hansung Kim (Co-PI) Yonsei University, S. Korea. Project Start Date: September 1, 2010 Project End Date: May 31, 2014 Objectives Develop low-cost and durable hybrid cathode catalyst * (HCC). Develop Pt alloy/activated graphitic carbon catalyst. * Develop corrosion resistant supports. *

174

2014 Advanced Grid Modeling Peer Review Presentations - Day Two...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Power Grid Optimization under Uncertainty: Formulations, Algorithms, and High-Performance Computing - Victor Zavala, ANL, Jianhui Wang, ANL Chance-constrained OPF and Unit...

175

Theory, Investigation, and Stability of Cathode Electro-catalytic Activity„Georgia Institute of Technology  

NLE Websites -- All DOE Office Websites (Extended Search)

Theory, Investigation, and Stability of Theory, Investigation, and Stability of Cathode Electro-catalytic Activity- Georgia Institute of Technology Background The mission of the U.S. Department of Energy (DOE) National Energy Technology Laboratory (NETL) is to advance energy options to fuel our economy, strengthen our security, and improve our environment. With the Solid State Energy Conversion Alliance (SECA), NETL is leading the research, development, and demonstration of solid oxide fuel cells (SOFCs) for

176

Cathodic protection retrofit of an offshore pipeline  

SciTech Connect

The cathodic protection anodes and corrosion coating on two 8-inch (203.2 mm) outside diameter (O.D.) offshore pipelines were damaged during deep water ({minus}380 feet, {minus}116 m) installation. In-situ methods for deep water inspection and repair of the pipelines` cathodic protection and coating systems were developed and performed. Methods are described in which underwater anode retrofits were performed and friction welding technology was used to re-attach anode leads. Standard procedures for underwater pipeline coating repair and remediation of damaged line pipe are provided.

Winters, R.H.; Holk, A.C. [Tenneco Energy, Houston, TX (United States)

1997-09-01T23:59:59.000Z

177

A plasma cathode for a radio-frequency gun  

Science Journals Connector (OSTI)

A plasma ferroelectric cathode is used to form electron ... high charge in an electron bunch in an rf electron gun of a 10-cm wavelength ... . The operation of the cathode in the rf gun was studied experimentally...

V. A. Kushnir; I. V. Khodak

2008-09-01T23:59:59.000Z

178

Determination of Selenium in Nuts by Cathodic Stripping Potentiometry (CSP)  

Science Journals Connector (OSTI)

Determination of Selenium in Nuts by Cathodic Stripping Potentiometry (CSP) ... In this work, cathodic stripping potentiometry (CSP) (14) is used to determine the selenium content of nuts that were studied. ... CSP Analysis. ...

Giacomo Dugo Lara La Pera; Vincenzo Lo Turco; Ekaterini Mavrogeni; Maria Alfa

2003-05-20T23:59:59.000Z

179

Development of Ultra-low Platinum Alloy Cathode Catalyst for...  

Energy Savers (EERE)

Development of Ultra-low Platinum Alloy Cathode Catalyst for PEM Fuel Cells Development of Ultra-low Platinum Alloy Cathode Catalyst for PEM Fuel Cells These slides were presented...

180

Develop high energy high power Li-ion battery cathode materials : a first principles computational study  

E-Print Network (OSTI)

lithium battery cathode. Electrochemical and Solid Statebattery performance of LiMn2O4 cathode. Solid State Ionics,

Xu, Bo; Xu, Bo

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "advanced anl cathode" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

LOW TEMPERATURE CATHODE SUPPORTED ELECTROLYTES  

SciTech Connect

This project has three main goals: Thin Films Studies, Preparation of Graded Porous Substrates and Basic Electrical Characterization and Testing of Planar Single Cells. During this time period substantial progress has been made in developing low temperature deposition techniques to produce dense, nanocrystalline yttrium-stabilized zirconia films on both dense oxide and polymer substrates. Progress has been made in the preparation and characterization of thin electrolytes and porous LSM substrates. Both of these tasks are essentially on or ahead of schedule. In our proposal, we suggested that the ZrO{sub 2}/Sc system needed to be considered as a candidate as a thin electrolyte. This was because microcrystalline ZrO{sub 2}/Sc has a significantly higher ionic conductivity than YSZ, particularly at the lower temperatures. As a result, some 0.5 micron thick film of ZrO{sub 2}/16% Sc on an alumina substrate (grain size 20nm) was prepared and the electrical conductivity measured as a function of temperature and oxygen activity. The Sc doped ZrO{sub 2} certainly has a higher conductivity that either 20nm or 2400nm YSZ, however, electronic conductivity dominates the conductivity for oxygen activities below 10{sup -15}. Whereas for YSZ, electronic conductivity is not a problem until the oxygen activity decreases below 10{sup -25}. These initial results show that the ionic conductivity of 20nm YSZ and 20nm ZrO{sub 2}/16% Sc are essentially the same and the enhanced conductivity which is observed for Sc doping in microcrystalline specimens is not observed for the same composition when it is nanocrystalline. In addition they show that the electronic conductivity of Sc doped ZrO{sub 2} is at least two orders of magnitude higher than that observed for YSZ. The conclusion one reaches is that for 0.5 to 1 micron thick nanocrystalline films, Sc doping of ZrO{sub 2} has no benefits compared to YSZ. As a result, electrolyte films of ZrO{sub 2}/Sc should not be considered as candidates. However, they have the potential of being useful as an interface on the anode side of the electrolyte. NexTech has focused much of its effort during the past few months on establishing tape casting methods for porous LSM substrates. This work, performed under a separate DOE-funded program, involved tape casting formulations comprising LSM powders with bi-modal particle size distributions and fugitive pore forming additives. Sintered LSM substrates with porosities in the 30 to 40 vol% range, and pore sizes of 10 {approx} 20 microns have been prepared. In addition, tape casting formulations involving composite mixtures of LSM and Sm-doped ceria (SDC) have been evaluated. The LSM/SDC cathode substrates are expected to provide better performance at low temperatures. Characterization of these materials is currently underway.

Harlan U. Anderson

2000-03-31T23:59:59.000Z

182

ANL Technical Support Program for DOE Environmental Restoration and Waste Management; Annual report, October 1992--September 1993  

SciTech Connect

This report is an overview of the progress during FY 1993 for the Technical Support Program that is part of the ANL Technology Support Activity for DOE Environmental Restoration and Waste Management (EM). The purpose is to evaluate, before hot start-up of the Defense Waste Processing Facility (DWPF) and the West Valley Demonstration Project (WVDP), factors that are anticipated to affect glass reaction in an unsaturated environment typical of what may be expected for the candidate Yucca Mountain repository site. Specific goals for the testing program include the following: reviewing and evaluating available data on parameters that will be important in establishing the long-term performance of glass in a repository environment; performing tests to further quantify the effects of important variables where there are deficiencies in the available data; and initiating long-term tests to determine glass performance under a range of conditions applicable to repository disposal.

Bates, J.K.; Bourcier, W.L.; Bradley, C.R. [and others

1994-06-01T23:59:59.000Z

183

Photo cathode laser timing response measurements  

E-Print Network (OSTI)

Photo cathode laser timing response measurements F. Löhl, H. Schlarb, E. Vogel, W. Koprek, V on the gun phase 2.) Arrival time change of photo injector laser pulses #12;Florian Löhl FLASH Seminar, June 19th, 2007 photo injector laser ~ 1.3 GHz vector modulator DAC I Q DOOCS Courtesy of I. Will #12

184

Advanced cell technology for high performance Li-A1/FeS{sub 2} secondary batteries.  

SciTech Connect

In early 1993. Argonne National Laboratory (ANL) initiated a major R and D effort to develop bipolar Li-Al/LiCl-LiBr-KBr/FeS{sub 2} batteries for electric vehicles, targeting the USABC Long-Term Goals. Significant advancements were achieved in the areas of (i) chemical purity, (ii) electrode and electrolyte additives, and (iii) peripheral seals. It was determined that key chemical constituents contained undesirable impurities. ANL developed new chemical processes for preparing Li{sub 2}S, FeS, and CoS{sub 2} that were >98.5% pure. We evaluated a large variety of electrode and electrolyte additives for reducing cell area specific impedance (ASI). Candidate positive electrode additives offered increased electronic conductivity, enhanced reaction kinetics, and/or improved porous electrode morphology. CoS{sub 2}, CuFeS{sub 2}, MgO, and graphite (fibers) were identified as the most beneficial impedance-reducing positive electrode additives. Although electronically conductive carbon and graphite additives produced measurable ASI reductions in the negative electrode, they degraded its structural integrity and were deemed impractical. Lil and LiF were identified as beneficial electrolyte additives, that enhance positive electrode kinetics. ANL refined its baseline metal/ceramic peripheral seal and increased its strength by a factor of three (achieving a safety factor >10). In parallel, ANL developed a high-strength advanced metal/ceramic seal that offers appreciable cost reductions.

Henriksen, G. L.

1998-07-10T23:59:59.000Z

185

ANL/APS/TB-32 Test of Horizontal Field Measurements Using Two-Axis Hall  

NLE Websites -- All DOE Office Websites (Extended Search)

2 2 Test of Horizontal Field Measurements Using Two-Axis Hall Probes at the APS Magnetic Measurement Facility I. Vasserman Advanced Photon Source Argonne National Laboratory Argonne, IL 60439 1. Introduction The free-electron laser (FEL) project at the Advanced Photon Source (APS) will use a 400-MeV particle beam from the APS linac with RMS beam transverse size of 100 µm and requires very high performance of the insertion devices in order to achieve high intensity radiation. Averaged over period, the trajectory must deviate from the ideal on-axis trajectory by not more than 10% of the RMS beam size. Meaning that the second field integral should be straight within ±1300 G-cm 2 over the length of the device for both horizontal and vertical directions for the 400-MeV particle

186

Cathode depth sensing in CZT detectors  

E-Print Network (OSTI)

Measuring the depth of interaction in thick Cadmium-Zinc-Telluride (CZT) detectors allows improved imaging and spectroscopy for hard X-ray imaging above 100 keV. The Energetic X-ray Imaging Survey Telescope (EXIST) will employ relatively thick (5 - 10 mm) CZT detectors, which are required to perform the broad energy-band sky survey. Interaction depth information is needed to correct events to the detector "focal plane" for correct imaging and can be used to improve the energy resolution of the detector at high energies by allowing event-based corrections for incomplete charge collection. Background rejection is also improved by allowing low energy events from the rear and sides of the detector to be rejected. We present experimental results of interaction depth sensing in a 5 mm thick pixellated Au-contact IMARAD CZT detector. The depth sensing was done by making simultaneous measurements of cathode and anode signals, where the interaction depth at a given energy is proportional to the ratio of cathode/anode signals. We demonstrate how a simple empirical formula describing the event distributions in the cathode/anode signal space can dramatically improve the energy resolution. We also estimate the energy and depth resolution of the detector as a function of the energy and the interaction depth. We also show a depth-sensing prototype system currently under development for EXIST in which cathode signals from 8, 16 or 32 crystals can be read-out by a small multi-channel ASIC board that is vertically edge-mounted on the cathode electrode along every second CZT crystal boundary. This allows CZT crystals to be tiled contiguously with minimum impact on throughput of incoming photons. The robust packaging is crucial in EXIST, which will employ very large area imaging CZT detector arrays.

J. Hong; E. C. Bellm; J. E. Grindlay; T. Narita

2003-10-16T23:59:59.000Z

187

ANL/APS/TB-14 APS Beamline Design and Construction Requirements:  

NLE Websites -- All DOE Office Websites (Extended Search)

14 14 APS Beamline Design and Construction Requirements: A Reference Manual for Designers and Builders Version 1.0 May 1994 iii TABLE OF CONTENTS SECTION I DEFINITIONS, GUIDELINES, AND REVIEW CRITERIA ............................1 1. Introduction (July 21, 1998) ...............................................................................................1 1.1 About the Advanced Photon Source ...........................................................................1 1.2 About this Manual.......................................................................................................1 2. Beamline Definitions and Responsibilities (July 21, 1998) .................................................2 2.1 Definitions...................................................................................................................2

188

Dual-bonded catalyst layer structure cathode for PEMFC  

Science Journals Connector (OSTI)

Novel electrode structure based on dual-bonded catalyst layer structure is reported to elevate proton exchange membrane fuel cell (PEMFC) cathode performance. Differing from conventional cathode with simplex PTFE or ionomer as binder material in catalyst layer (CL), dual-bonded CL combines those two types of binders, respectively, in a composite structure. In order to develop a cathode possessing the superior merits of both mass transport and proton transfer, a PTFE-rich CL and an ionomer-rich CL were fabricated on gas diffusion layer in proper order. Polarization characteristic of cathodes with dual-bonded CL, conventional PTFE-bonded CL and ionomer-bonded CL were evaluated at ambient pressure in oxygen/air. Better performance of cathode was achieved with dual-bonded, compared with conventional structures. Electric yield rate of dual-bonded cathode was about 50%, whilst that of conventional cathodes was about 40%.

Xuewei Zhang; Pengfei Shi

2006-01-01T23:59:59.000Z

189

Virtual cathode microwave generator having annular anode slit  

DOE Patents (OSTI)

A microwave generator is provided for generating microwaves substantially from virtual cathode oscillation. Electrons are emitted from a cathode and accelerated to an anode which is spaced apart from the cathode. The anode has an annular slit therethrough effective to form the virtual cathode. The anode is at least one range thickness relative to electrons reflecting from the virtual cathode. A magnet is provided to produce an optimum magnetic field having the field strength effective to form an annular beam from the emitted electrons in substantial alignment with the annular anode slit. The magnetic field, however, does permit the reflected electrons to axially diverge from the annular beam. The reflected electrons are absorbed by the anode in returning to the real cathode, such that substantially no reflexing electrons occur. The resulting microwaves are produced with a single dominant mode and are substantially monochromatic relative to conventional virtual cathode microwave generators.

Kwan, Thomas J. T. (Los Alamos, NM); Snell, Charles M. (Los Alamos, NM)

1988-01-01T23:59:59.000Z

190

Cathodic protection requirements for deepwater systems  

SciTech Connect

Field and laboratory experience related to requirements for cathodic protection (CP) in deep water are reviewed with emphasis on identification of the major variables that need to be specified for successful deepwater CP designs for offshore structures. The subject is addressed based on the historical development of cathodic protection design methodologies for offshore structures focusing on sacrificial anode systems and trends that have resulted in specific changes in design requirements. Three main subjects are discussed: (1) application of existing industry standards such as NACE RP0176; (2) environmental factors--dissolved oxygen, temperature, salinity, pH, water velocity and fouling; and (3) calcareous deposits--difference between shallow and deep waters. Current practice of design criteria and systems for deepwater applications is assessed, including initial polarization, use of coatings and anode materials. The results from laboratory tests are compared with available documented service experiences and field tests results.

Menendez, C.M.; Hanson, H.R.; Kane, R.D.; Farquhar, G.B.

1999-07-01T23:59:59.000Z

191

NUMERICAL MODELING OF CATHODE CONTACT MATERIAL DENSIFICATION  

SciTech Connect

Numerical modeling was used to simulate the constrained sintering process of the cathode contact layer during assembly of solid oxide fuel cells (SOFCs). A finite element model based on the continuum theory for sintering of porous bodies was developed and used to investigate candidate low-temperature cathode contact materials. Constitutive parameters for various contact materials under investigation were estimated from dilatometry screening tests, and the influence of processing time, processing temperature, initial grain size, and applied compressive stress on the free sintering response was predicted for selected candidate materials. The densification behavior and generated stresses within a 5-cell planar SOFC stack during sintering, high temperature operation, and room temperature shutdown were predicted. Insufficient constrained densification was observed in the stack at the proposed heat treatment, but beneficial effects of reduced grain size, compressive stack preload, and reduced thermal expansion coefficient on the contact layer densification and stresses were observed.

Koeppel, Brian J.; Liu, Wenning N.; Stephens, Elizabeth V.; Khaleel, Mohammad A.

2011-11-01T23:59:59.000Z

192

Magnetron cathodes in plasma electrode pockels cells  

DOE Patents (OSTI)

Magnetron cathodes, which produce high current discharges, form greatly improved plasma electrodes on each side of an electro-optic crystal. The plasma electrode has a low pressure gas region on both sides of the crystal. When the gas is ionized, e.g., by a glow discharge in the low pressure gas, the plasma formed is a good conductor. The gas electrode acts as a highly uniform conducting electrode. Since the plasma is transparent to a high energy laser beam passing through the crystal, the plasma is transparent. A crystal exposed from two sides to such a plasma can be charged up uniformly to any desired voltage. A typical configuration utilizes helium at 50 millitorr operating. pressure and 2 kA discharge current. The magnetron cathode produces a more uniform plasma and allows a reduced operating pressure which leads to lower plasma resistivity and a more uniform charge on the crystal.

Rhodes, Mark A. (Pleasanton, CA)

1995-01-01T23:59:59.000Z

193

Industrial User Office | Advanced Photon Source  

NLE Websites -- All DOE Office Websites (Extended Search)

Industrial Liaison Office Industrial Liaison Office Industrial Liaison Office registration page New to Synchrotron Radiation New to the APS Already a User Advanced Photon Source Industrial Liaison Office Welcome to the Advanced Photon Source (APS) Industrial Liaison Office home page. The purpose of this Office is to provide outreach from the APS to the industrial community. As we develop the Office and this website to better address the needs of industrial users of the APS, both current and prospective, we are soliciting input by requesting projects and measurements that you would like to perform at the APS. Please complete the form below so that we can begin communicating with you. Questions? Email aps-i@aps.anl.gov. General Information Company Name *required First Name *required Last Name *required

194

ANL/APS/TB-5 Functional Description of APS Beamline Front Ends  

NLE Websites -- All DOE Office Websites (Extended Search)

Functional Description of APS Beamline Front Ends by Tuncer Kuzay February 1993 Advanced Photon Source & Argonne National Laboratory, Argonne, Illinois 60439 o operated by The University of Chicago for the United States Department of Energy under Contract W-31-1 09-Eng-38 Argonne National Laboratory, with facilties in the states of Ilinois and Idaho, is owned by the United States government, and operated by The University of Chicago under the provisions of a contract with the Deparment of Energy. DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any waranty, express or implied, or assumes any legal liability or responsibility for the accuracy,

195

ANL/APS/TB-21 Radiation Shielding of Insertion Device Beamlines  

NLE Websites -- All DOE Office Websites (Extended Search)

1 1 Radiation Shielding of Insertion Device Beamlines Using a Mirror as the First Optical Element W. Yun, B. Lai, K. J. Randall, S. Davey, D. R. Haeffner, P. K. Job, and D. Shu February 1995 Abstract The radiation shielding for an Advanced Photon Source (APS) insertion device beamline using a mirror as the first optical component is discussed. The beamline layout for a specific Synchrotron Radiation Instrumentation Collaborative Access Team beamline (sector 2 of SRI CAT) is described, and the methodology used to determine the radiation shielding is presented. Results indicate that, by using a x-ray mirror with a critical energy of 32 keV for total reflection, an undulator beam containing nearly all x-rays in the 0 - 32 keV spectral range can be delivered

196

Cathode power distribution system and method of using the same for power distribution  

DOE Patents (OSTI)

Embodiments include a cathode power distribution system and/or method of using the same for power distribution. The cathode power distribution system includes a plurality of cathode assemblies. Each cathode assembly of the plurality of cathode assemblies includes a plurality of cathode rods. The system also includes a plurality of bus bars configured to distribute current to each of the plurality of cathode assemblies. The plurality of bus bars include a first bus bar configured to distribute the current to first ends of the plurality of cathode assemblies and a second bus bar configured to distribute the current to second ends of the plurality of cathode assemblies.

Williamson, Mark A; Wiedmeyer, Stanley G; Koehl, Eugene R; Bailey, James L; Willit, James L; Barnes, Laurel A; Blaskovitz, Robert J

2014-11-11T23:59:59.000Z

197

Cathode fall measurement in a dielectric barrier discharge in helium  

SciTech Connect

A method based on the “zero-length voltage” extrapolation is proposed to measure cathode fall in a dielectric barrier discharge. Starting, stable, and discharge-maintaining voltages were measured to obtain the extrapolation zero-length voltage. Under our experimental conditions, the “zero-length voltage” gave a cathode fall of about 185 V. Based on the known thickness of the cathode fall region, the spatial distribution of the electric field strength in dielectric barrier discharge in atmospheric helium is determined. The strong cathode fall with a maximum field value of approximately 9.25 kV/cm was typical for the glow mode of the discharge.

Hao, Yanpeng; Zheng, Bin; Liu, Yaoge [School of Electric Power, South China University of Technology, Guangzhou 510640 (China)] [School of Electric Power, South China University of Technology, Guangzhou 510640 (China)

2013-11-15T23:59:59.000Z

198

Innovative Cathode Coating Enables Faster Battery Charging, Dischargin...  

NLE Websites -- All DOE Office Websites (Extended Search)

available for licensing: Coating increases electrical conductivity of cathode materials Coating does not hinder battery performance Provides two coating processes that...

199

Development of sulfur cathode material for Li-S batteries.  

E-Print Network (OSTI)

??M.S. Efforts were taken to fabricate a cathode material having Sulfur as the active material. First step is composed of identifying potential ways of fabricating… (more)

Dharmasena, Ruchira Ravinath, 1984-

2014-01-01T23:59:59.000Z

200

Development of spray coated cathodes for RITS-6.  

SciTech Connect

This report documents work conducted in FY13 to conduct a feasibility study on thermal spray coated cathodes to be used in the RITS-6 accelerator in an attempt to improve surface uniformity and repeatability. Currently, the cathodes are coated with colloidal silver by means of painting by hand. It is believed that improving the cathode coating process could simplify experimental setup and improve flash x-ray radiographic performance. This report documents the experimental setup and summarizes the results of our feasibility study. Lastly, it describes the path forward and potential challenges that must be overcome in order to improve the process for creating uniform and repeatable silver coatings for cathodes.

Simpson, Sean; Leckbee, Joshua J.; Miller, Stephen Samuel

2013-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "advanced anl cathode" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

NETL SOFC: Anode-Electrolyte-Cathode (AEC) Development  

NLE Websites -- All DOE Office Websites (Extended Search)

Program Plan Project Portfolio Project Information Systems Analysis Publications Anode-Electrolyte-Cathode (AEC) Development-This key technology focuses on improving...

202

Cell Analysis ? High-Energy Density Cathodes and Anodes  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

* Investigate the relationships of structure, morphology and performance of cathode and anode materials. * Explore kinetic barriers and utilize the knowledge gained to design and...

203

Better Ham & Cheese: Enhanced Anodes and Cathodes for Fuel Cells...  

NLE Websites -- All DOE Office Websites (Extended Search)

Enhanced Anodes and Cathodes for Fuel Cells Epitaxial Single Crystal Nanostructures for Batteries & PVs High Performance Alkaline Fuel Cell Membranes Improving Fuel Cell...

204

Design and Evaluation of Novel High Capacity Cathode Materials  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Design and Evaluation of Novel High Capacity Cathode Materials Christopher Johnson and Michael Thackeray Chemical Sciences and Engineering Division, Argonne Annual Merit Review DOE...

205

Development of High Energy Cathode Materials | Department of...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Materials Development of High Energy Cathode Materials 2011 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer Evaluation...

206

Process for Low Cost Domestic Production of LIB Cathode Materials...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Process for Low Cost Domestic Production of LIB Cathode Materials 2011 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer...

207

Stabilized Spinels and Polyanion Cathodes | Department of Energy  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

& Publications STABILIZED SPINEL AND POLYANION CATHODES Stabilized Spinels and Nano Olivines Vehicle Technologies Office Merit Review 2014: High-Capacity Polyanion...

208

Effect of Cathode Position on Hall-Effect Thruster Performance and Cathode Coupling Voltage  

E-Print Network (OSTI)

ionization fraction I Anode supply current m Anode mass flow mi Mass of a xenon ion nq Density of xenon neutral or ion with charge state q q Average xenon species charge number T Thrust t Time Tf Final. In the laboratory, this parameter is the potential difference between the cathode and ground, i.e. the tank walls

King, Lyon B.

209

Effect of Cathode Position on Hall-Effect Thruster Performance and Cathode Coupling Voltage  

E-Print Network (OSTI)

losses e Electronic charge fi Propellent ionization fraction I Anode supply current mi Mass of a xenon ion nq Density of xenon neutral or ion with charge state q q Average xenon species charge number is the potential difference between the cathode and ground, i.e. the tank walls, and is ME-EM Dept., 815 R.L. Smith

King, Lyon B.

210

Shorting pipeline and jacket cathodic protection systems  

SciTech Connect

The benefits of shorting pipeline and jacket cathodic protection (CP) systems for the external protection of subsea pipelines based on data from operations in the Gulf of Mexico, Persian Gulf, North Sea, and Indonesia are discussed. Shorting, as opposed to traditional electrical isolation, is cost effective because CP surveys and future retrofits are greatly simplified. Jacket CP systems can provide protection of coated pipelines for distances much greater than normally anticipated. Some simple modeling of jacket/pipeline CP systems is used to illustrate the effect of various design parameters.

Thomason, W.H. (Conoco Inc., Ponca City, OK (United States)); Evans, S. (Conoco Inc., Houston, TX (United States)); Rippon, I.J. (Conoco Ltd., Aberdeen (United Kingdom)); Maurin, A.E. III (Conoco Inc., Lafayette, LA (United States))

1993-09-01T23:59:59.000Z

211

Cathodic protection retrofit of an offshore pipeline  

SciTech Connect

Cathodic protection (CP) anodes and corrosion coating on two offshore pipelines were damaged during deep water installation. In-situ methods for deep-water inspection and repair of the pipelines` CP and coating systems were developed and used. High-pressure natural gas Pipeline. A design was 5.6 miles of 8.625 in. OD by 0.406 in. W.T. API SL, Grade X-42, seamless line pipe. Pipeline B design was 0.3 miles of similar specification pipe. Both pipelines were mill-coated with 14 mil of fusion-bonded epoxy (FBE) corrosion coating. Girth welds were field-coated with FBE.

Winters, R.H.; Holk, A.C. [Tenneco Energy, Houston, TX (United States)

1997-09-01T23:59:59.000Z

212

Chemical Heterogeneities on La0.6Sr0.4CoO3-Thin FilmsCorrelations to Cathode Surface Activity and Stability  

E-Print Network (OSTI)

for advancing our ability to tailor the electrochemical performance of solid oxide fuel cell cathodes functionality of solid oxide fuel cells at reduced temperatures (from above 800 °C to 700-500 °C). Strontium the high-temperature-grown ones, which show severe degradation of electrochemical kinetics during thermal

Yildiz, Bilge

213

Develop high energy high power Li-ion battery cathode materials : a first principles computational study  

E-Print Network (OSTI)

develop the high energy high power cathode materials for LIBNew Cathode Material for Batteries of High- Energy Density.High Energy High Power Li-ion Battery Cathode Materials A

Xu, Bo; Xu, Bo

2012-01-01T23:59:59.000Z

214

Develop high energy high power Li-ion battery cathode materials : a first principles computational study  

E-Print Network (OSTI)

as cathode materials for Li-ion battery. Physica B-CondensedHigh Energy High Power Li-ion Battery Cathode Materials AHigh Energy High Power Li-ion Battery Cathode Materials A

Xu, Bo; Xu, Bo

2012-01-01T23:59:59.000Z

215

Studies of local degradation phenomena in composite cathodes for  

NLE Websites -- All DOE Office Websites (Extended Search)

Studies of local degradation phenomena in composite cathodes for Studies of local degradation phenomena in composite cathodes for lithium-ion batteries Title Studies of local degradation phenomena in composite cathodes for lithium-ion batteries Publication Type Journal Article Year of Publication 2007 Authors Kerlau, Marie, Marek Marcinek, Venkat Srinivasan, and Robert Kostecki Journal Electrochimica Acta Volume 52 Pagination 5422-5429 Keywords cathode, degradation, li-ion battery, raman microscopy Abstract LiNi0.8Co0.15Al0.05O2 and LiNi1/3Co1/3Mn1/3O2 composite cathodes were cycled in model cells to study interfacial phenomena that could lead to electrode degradation. Ex situ spectroscopic analysis of the tested cathodes, which suffered substantial power and capacity loss, showed that the state of charge (SOC) of oxide particles on the cathode surface was highly non-uniform despite the deep discharge of the Li-ion cell at the end of the test. The inconsistent kinetic behavior of individual oxide particles was attributed to the degradation of electronic pathways within the composite cathodes. A simple theoretical model based on a distributed network showed that an increase of the contact resistance between composite electrode particles may be responsible for non-uniform local kinetic behavior of individual oxide particles and the overall degradation of electrochemical performance of composite electrodes.

216

Hydrogen Peroxide Formation Rates in a PEMFC Anode and Cathode  

E-Print Network (OSTI)

Hydrogen Peroxide Formation Rates in a PEMFC Anode and Cathode Effect of Humidity and Temperature Hydrogen peroxide H2O2 formation rates in a proton exchange membrane fuel cell PEMFC anode and cathode were catalyst onto the disk and by varying the temperature, dissolved O2 concentration, and the acidity levels

Weidner, John W.

217

Self-contained hot-hollow cathode gun source assembly  

DOE Patents (OSTI)

A self-contained hot-hollow cathode gun source assembly for use in a vacuum chamber includes a crucible block having a hot-hollow cathode gun mounted underneath and providing a hole for the magnetic deflection of the ion/electron beam into a crucible on top the block.

Zeren, Joseph D. (Boulder, CO)

1986-01-01T23:59:59.000Z

218

Self-contained hot-hollow cathode gun source assembly  

DOE Patents (OSTI)

A self-contained hot-hollow cathode gun source assembly for use in a vacuum chamber includes a crucible block having a hot-hollow cathode gun mounted underneath and providing a hole for the magnetic deflection of the ion/electron beam into a crucible on top the block.

Zeren, J.D.

1984-08-01T23:59:59.000Z

219

CHROMIUM POISONING OF COMPOSITE LSM/YSZ CATHODES  

E-Print Network (OSTI)

-Lin Liu and Mogens Mogensen Risø National Laboratory, Materials Research Department, DK-4000 Roskilde, Denmark Introduction Degradation of composite SOFC cathodes consisting of lanthanum strontium manganate during simulated SOFC operation at ~850°C with current densities from 0 to 0.5 A/cm2. The cathodes were

220

Nanofiber Scaffold for Cathode of Solid Oxide Fuel Cell  

SciTech Connect

A high performance solid oxide fuel cell cathode using the yttria-stabilized zirconia (YSZ) nanofibers scaffold with the infiltrated La1-xSrxMnO3 (LSM) shows an enhanced catalytic activity toward oxygen reduction. Such a cathode offers a continuous path for charge transport and an increased number of triple-phase boundary sites.

Mingjia Zhi; Nicholas Mariani; Randall Gemmen; Kirk Gerdes; Nianqiang Wu

2010-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "advanced anl cathode" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Aqueous Cathode for Next-Generation Alkali-Ion Batteries  

Science Journals Connector (OSTI)

The aqueous cathode in the flow-through mode can be individually stored in a “fuel” tank, which reduces the volume of the battery and increases the design flexibility of the battery structure, as shown in Figure 1. ... Unlike previous lithium?water batteries, the aqueous cathode is not plagued by H2 evolution from the solution, and the battery is efficiently rechargeable. ...

Yuhao Lu; John B. Goodenough; Youngsik Kim

2011-03-28T23:59:59.000Z

222

Ion Exchange Membrane Cathodes for Scalable Microbial Fuel Cells  

Science Journals Connector (OSTI)

Ion Exchange Membrane Cathodes for Scalable Microbial Fuel Cells ... The optimum amount of graphite fibers needed for these brush electrodes has not yet been optimized, and the cathode remains the greatest challenge for MFC designs. ... Different catalyst locations (inside versus outside) and loadings, specific surface areas, and solution chemistry (solution conductivity) were examined to optimize performance. ...

Yi Zuo; Shaoan Cheng; Bruce E. Logan

2008-08-13T23:59:59.000Z

223

Development and processing of LEU targets for {sup 99}Mo production-overview of the ANL program  

SciTech Connect

Most of the world`s supply of {sup 99m}Tc for medical purposes is currently produced from the decay of {sup 99}Mo derived from the fissioning of high-enriched uranium (HEU). Substitution of low-enriched uranium (LEU) silicide fuel for the HEU alloy and aluminide fuels used in most current target designs will allow equivalent {sup 99}Mo yields with little change in target geometries. Substitution of uranium metal for uranium oxide films in other target designs will also allow the substitution of LEU for HEU. During 1995, we have continued to study the modification of current targets and processes to allow the conversion from HEU to LEU. A uranium-metal-foil target was fabricated at ANL and irradiated to prototypic burnup in the Indonesian RSG-GAS reactor. Postirradiation examination indicated that minor design modifications will be required to allow the irradiated foil to be removed for chemical processing. Means to dissolve and process LEU foil have been developed, and a mock LEU foil target was processed in Indonesia. We have also developed means to dissolve the LEU foil in alkaline peroxide, where it can be used to replace HEU targets that are currently dissolved in base before recovering and purifying the {sup 99}Mo. We have also continued work on the dissolution of U{sub 3}Si{sub 2} and have a firm foundation on dissolving these targets in alkaline peroxide. The technology-exchange agreement with Indonesia is well underway, and we hope to expand our international cooperations in 1996.

Snelgrove, J.L.; Hofman, G.L.; Wiencek, T.C. [and others

1995-09-01T23:59:59.000Z

224

Polymer–Graphene Nanocomposites as Ultrafast-Charge and -Discharge Cathodes for Rechargeable Lithium Batteries  

Science Journals Connector (OSTI)

Polymer–Graphene Nanocomposites as Ultrafast-Charge and -Discharge Cathodes for Rechargeable Lithium Batteries ... Lithium battery; cathode; polymer; graphene; nanocomposite ...

Zhiping Song; Terrence Xu; Mikhail L. Gordin; Ying-Bing Jiang; In-Tae Bae; Qiangfeng Xiao; Hui Zhan; Jun Liu; Donghai Wang

2012-03-26T23:59:59.000Z

225

Solid State NMR Studies of Li-Rich NMC Cathodes: Investigating...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

voltage fade * Electrochemical characterization of LMR-NMC cathode materials with fully lithium-6 enriched cells (enriched electrolyte, enriched Li-metal and enriched cathode) *...

226

Alternative Fuel and Advanced Technology Vehicles Pilot Program Emissions  

Open Energy Info (EERE)

Alternative Fuel and Advanced Technology Vehicles Pilot Program Emissions Alternative Fuel and Advanced Technology Vehicles Pilot Program Emissions Benefit Tool Jump to: navigation, search LEDSGP green logo.png FIND MORE DIA TOOLS This tool is part of the Development Impacts Assessment (DIA) Toolkit from the LEDS Global Partnership. Tool Summary LAUNCH TOOL Name: Alternative Fuel and Advanced Technology Vehicles Pilot Program Emissions Benefit Tool Agency/Company /Organization: Argonne National Laboratory Sector: Energy Focus Area: Transportation Phase: Determine Baseline, Evaluate Options Topics: Co-benefits assessment, GHG inventory Resource Type: Online calculator, Software/modeling tools User Interface: Spreadsheet Complexity/Ease of Use: Moderate Website: www.transportation.anl.gov/modeling_simulation/AirCred/index.html

227

Design and Evaluation of High Capacity Cathodes  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

to prepare advanced electrodes and surfaces with stable architectural designs Use atomic-scale modeling as a guide to identify, design and understand the structural...

228

Advanced Vehicle Technology Analysis & Evaluation Team  

NLE Websites -- All DOE Office Websites (Extended Search)

Technology Technology Analysis and Evaluation Team Lee Slezak Manager, AVTAET Office of FreedomCAR and Vehicle Technologies DOE Hydrogen, Fuel Cells, and Infrastructure Technologies Program Systems Analysis Workshop July 28-29, 2004 Washington, D.C. 2 Charter * AVTAET's mission is to develop and apply the tools and skills necessary to: - Identify technology development needs and requirements to support OFCVT goals and - Collect, analyze, and disseminate unbiased information on advanced transportation technology components, systems, and vehicles that potentially support OFCVT goals. * Goal of analytical groups at ANL, NREL and ORNL - Develop and apply modeling and simulation tools to help DOE, manufacturers and suppliers design and develop clean, energy efficient components and systems for

229

Cathodic Vacuum Arc Plasma of Thallium  

SciTech Connect

Thallium arc plasma was investigated in a vacuum arc ionsource. As expected from previous consideration of cathode materials inthe Periodic Table of the Elements, thallium plasma shows lead-likebehavior. Its mean ion charge state exceeds 2.0 immediately after arctriggering, reaches the predicted 1.60 and 1.45 after about 100 microsecand 150 microsec, respectively. The most likely ion velocity is initially8000 m/s and decays to 6500 m/s and 6200 m/s after 100 microsec and 150microsec, respectively. Both ion charge states and ion velocities decayfurther towards steady state values, which are not reached within the 300microsec pulses used here. It is argued that the exceptionally high vaporpressure and charge exchange reactions are associated with theestablishment of steady state ion values.

Yushkov, Georgy Yu.; Anders, Andre

2006-10-02T23:59:59.000Z

230

Electrorefining cell with parallel electrode/concentric cylinder cathode  

DOE Patents (OSTI)

A cathode-anode arrangement for use in an electrolytic cell is adapted for electrochemically refining spent nuclear fuel from a nuclear reactor and recovering purified uranium for further treatment and possible recycling as a fresh blanket or core fuel in a nuclear reactor. The arrangement includes a plurality of inner anodic dissolution baskets that are each attached to a respective support rod, are submerged in a molten lithium halide salt, and are rotationally displaced. An inner hollow cylindrical-shaped cathode is concentrically disposed about the inner anodic dissolution baskets. Concentrically disposed about the inner cathode in a spaced manner are a plurality of outer anodic dissolution baskets, while an outer hollow cylindrical-shaped is disposed about the outer anodic dissolution baskets. Uranium is transported from the anode baskets and deposited in a uniform cylindrical shape on the inner and outer cathode cylinders by rotating the anode baskets within the molten lithium halide salt. Scrapers located on each anode basket abrade and remove the spent fuel deposits on the surfaces of the inner and outer cathode cylinders, with the spent fuel falling to the bottom of the cell for removal. Cell resistance is reduced and uranium deposition rate enhanced by increasing the electrode area and reducing the anode-cathode spacing. Collection efficiency is enhanced by trapping and recovery of uranium dendrites scrapped off of the cylindrical cathodes which may be greater in number than two.

Gay, Eddie C. (Park Forest, IL); Miller, William E. (Naperville, IL); Laidler, James J. (Burr Ridge, IL)

1997-01-01T23:59:59.000Z

231

High Performance Cathodes for Li-Air Batteries  

SciTech Connect

The overall objective of this project was to develop and fabricate a multifunctional cathode with high activities in acidic electrolytes for the oxygen reduction and evolution reactions for Li-air batteries. It should enable the development of Li-air batteries that operate on hybrid electrolytes, with acidic catholytes in particular. The use of hybrid electrolytes eliminates the problems of lithium reaction with water and of lithium oxide deposition in the cathode with sole organic electrolytes. The use of acid electrolytes can eliminate carbonate formation inside the cathode, making air breathing Li-air batteries viable. The tasks of the project were focused on developing hierarchical cathode structures and bifunctional catalysts. Development and testing of a prototype hybrid Li-air battery were also conducted. We succeeded in developing a hierarchical cathode structure and an effective bifunctional catalyst. We accomplished integrating the cathode with existing anode technologies and made a pouch prototype Li-air battery using sulfuric acid as catholyte. The battery cathodes contain a nanoscale multilayer structure made with carbon nanotubes and nanofibers. The structure was demonstrated to improve battery performance substantially. The bifunctional catalyst developed contains a conductive oxide support with ultra-low loading of platinum and iridium oxides. The work performed in this project has been documented in seven peer reviewed journal publications, five conference presentations, and filing of two U.S. patents. Technical details have been documented in the quarterly reports to DOE during the course of the project.

Xing, Yangchuan

2013-08-22T23:59:59.000Z

232

Electrorefining cell with parallel electrode/concentric cylinder cathode  

DOE Patents (OSTI)

A cathode-anode arrangement for use in an electrolytic cell is adapted for electrochemically refining spent nuclear fuel from a nuclear reactor and recovering purified uranium for further treatment and possible recycling as a fresh blanket or core fuel in a nuclear reactor. The arrangement includes a plurality of inner anodic dissolution baskets that are each attached to a respective support rod, are submerged in a molten lithium halide salt, and are rotationally displaced. An inner hollow cylindrical-shaped cathode is concentrically disposed about the inner anodic dissolution baskets. Concentrically disposed about the inner cathode in a spaced manner are a plurality of outer anodic dissolution baskets, while an outer hollow cylindrical-shaped is disposed about the outer anodic dissolution baskets. Uranium is transported from the anode baskets and deposited in a uniform cylindrical shape on the inner and outer cathode cylinders by rotating the anode baskets within the molten lithium halide salt. Scrapers located on each anode basket abrade and remove the spent fuel deposits on the surfaces of the inner and outer cathode cylinders, with the spent fuel falling to the bottom of the cell for removal. Cell resistance is reduced and uranium deposition rate enhanced by increasing the electrode area and reducing the anode-cathode spacing. Collection efficiency is enhanced by trapping and recovery of uranium dendrites scrapped off of the cylindrical cathodes which may be greater in number than two. 12 figs.

Gay, E.C.; Miller, W.E.; Laidler, J.J.

1997-07-22T23:59:59.000Z

233

Mixed polyanion glass cathodes: Iron phosphate vanadate glasses  

SciTech Connect

Mixed polyanion (MP) glasses have been investigated for use as cathodes in lithium ion batteries. MP glass cathodes are similar in composition to theoretically promising crystalline polyanionic (CP) cathodes (e.g., lithium cobalt phosphate, lithium manganese silicate), but with proper polyanion substitution, they can be designed to overcome the key shortcomings of CP cathodes, such as poor electrical conductivity and irreversible phase changes. Iron phosphate/vanadate glasses were chosen as a first demonstration of the MP glass concept. Polyanion substitution with vanadate was shown to improve the intercalation capacity of an iron phosphate glass from almost zero to full theoretical capacity. In addition, the MP glass cathodes also exhibited an unexpected second high-capacity electrochemical reaction. X-ray absorption near-edge structure (XANES) and x-ray diffraction (XRD) of cathodes from cells having different states of charge suggested that this second electrochemical reaction is a glass-state conversion reaction. With a first demonstration established, MP glass materials utilizing an intercalation and/or glass-state conversion reaction are promising candidates for future high-energy cathode research.

Kercher, Andrew K [ORNL; Ramey, Joanne Oxendine [ORNL; Carroll, Kyler J [Massachusetts Institute of Technology (MIT); Kiggans Jr, James O [ORNL; Veith, Gabriel M [ORNL; Meisner, Roberta [Oak Ridge National Laboratory (ORNL); Boatner, Lynn A [ORNL; Dudney, Nancy J [ORNL

2014-01-01T23:59:59.000Z

234

ANL-678A  

NLE Websites -- All DOE Office Websites (Extended Search)

Non-NRTL/Modified NRTL Listed Electrical Equipment Approval Form Non-NRTL/Modified NRTL Listed Electrical Equipment Approval Form For use at Argonne National Laboratory Equipment Location Unlisted equipment that is determined to be safe to operate will have a tracking sticker attached for identification. Equipment that does not pass this evaluation will have a REJECTED sticker attached. Operator not exposed to any hazard Not damaged Enclosure Appropriate materials used Protects contents from operating environment Adequate shock protection (components well secured) Will contain any arcs, sparks and electrical explosions Grounding Approve N/A Ground is properly terminated All non-current carrying exposed metal is properly bonded All non-current carrying internal subsystems are properly bonded Equipment ground is run with circuit conductors

235

anl_mira.pptx  

NLE Websites -- All DOE Office Websites (Extended Search)

Blue Gene Performance Data Repository and Blue Gene Performance Data Repository and Application Data Prefetching I-Hsin Chung ihchung@us.ibm.com © 2013 IBM Corporation Performance Data Repository § Goal - To characterize the applications on existing systems - To understand the system resource usage * To provide inputs for next generation system design § Objective - Collect performance data and store them into a relational database - Uniform storage format * to support queries and presentation * To make comparisons cross applications or platforms © 2013 IBM Corporation Application Performance data/trace Application Job execution Performance data/trace instrumentation collection © 2013 IBM Corporation 4 Performance Data Repository DB2 bgqsn2 grotius Blue Gene Compute nodes mgmt

236

ANL News 2004  

NLE Websites -- All DOE Office Websites (Extended Search)

4 Articles 4 Articles Argonne News is the Argonne weekly employee newsletter. This page contains Argonne News articles that focus on the APS. Structure of germanium-dioxide glass Glass gives up secrets under pressure (Dec. 10) Glass is a mysterious material, but when researchers apply pressure, it reveals secrets. Using a variety of techniques at the APS and the IPNS, Argonne researchers saw for the first time ever, the atomic structure of a dense, purely octahedral glass that has eluded scientists for decades. They also witnessed a continuous structural change in the glass, disproving the theory that tetrahedral glasses go through a distinct transition between low- and high-density phases. A µSXRF map showing the heterogeneous uranium distribution occurring at the micrometer scale. This and related research is helping learn more about how to clean up contaminated soil at nuclear weapons production sites.

237

ANL News 2005  

NLE Websites -- All DOE Office Websites (Extended Search)

Argonne News 2005 Articles Argonne News is the Argonne weekly employee newsletter. This page contains Argonne News articles that focus on the APS. Metal atoms near the surface of...

238

ANL-05/20  

Office of Scientific and Technical Information (OSTI)

organic molecules and radicals, but also inorganic species connected to combustion and air pollution. Since 1991 this database is freely available on the internet, at the...

239

ANL-678A  

NLE Websites -- All DOE Office Websites (Extended Search)

Systems Approval Form Systems Approval Form For use at Argonne National Laboratory Division: Responsible Person: System Name: System Description: Manufacturer: Number of pieces of equipment: Date Built: Date last modified: Building: Room: Subsystems 1. Electrical hazard classification 2. Stored electrical energy in capacitors (E and V) 3. Batteries, including UPSs 4. Electromagnetic fields produced (dc to 300 GHz, pulsed) 5. Infrared, optical and ultraviolet 6. X-Rays 7. Heat and sparks 8. Acoustical energy 9. Stored mechanical energy 10. Other (chemical, high pressure, cryogen, water, etc.) Label Number: SECTION 1 - EQUIPMENT DATA: SECTION 2 - HAZARD ASSESSMENT: Determine all electrical and non-electrical hazards that could injure an employee, including the operation and maintenance workers.

240

Stable cycling of lithium sulfide cathodes through strong affinity with a bifunctional binder  

E-Print Network (OSTI)

on Li2S cathodes to date.22­28 Most efforts have been focused on the active material itself-lithiated Li2S represents a more attractive cathode material because it enables pairing with safer, lithium-generation cathode materials with much higher specic capacities. Sulfur is a promising cathode material with a high

Cui, Yi

Note: This page contains sample records for the topic "advanced anl cathode" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Microsoft PowerPoint - Cathode contact materials PNNL.ppt [Compatibility Mode]  

NLE Websites -- All DOE Office Websites (Extended Search)

Cathode Cathode Contact Development of Cathode Contact Materials for SOFC J.W. Stevenson, G.G. Xia, Z. Lu, X. Li, Z. Nie, T. Oh, and J.D.Templeton Pacific Northwest National Laboratory Pacific Northwest National Laboratory Richland, WA 99352 July 27-29, 2010 July 27 29, 2010 11 th Annual SECA Workshop Pittsburgh, PA Cathode/Interconnect Contact Materials Cathode/Interconnect Contact Materials Cathode Chromia-forming Protective Coating Contact layer Chromia-forming alloy interconnect 2 Cathode/Interconnect Contact Materials Cathode/Interconnect Contact Materials Requirements: High electrical conductivity to reduce interfacial electrical resistance between cathode and interconnect Contact layer Chemical and structural stability in air at SOFC operating temperature Chemical compatibility with adjacent materials (perovskite cathode,

242

PRELIMINARY IN-SITU X-RAY ABSORPTION FINE STRUCTURE EXAMINATION OF PT/C AND PTCO/C CATHODE CATALYSTS IN AN OPERATIONAL POLYMER ELECTROLYTE FUEL CELL  

SciTech Connect

State-of-the-art polymer electrolyte fuel cells require a conditioning period to reach optimized cell performance. There is insuffi cient understanding about the behavior of catalysts during this period, especially with regard to the changing environment of the cathode electrocatalyst, which is typically Pt nanoparticles supported on high surface area Vulcan XC-72 carbon (Pt/C). The purpose of this research was to record preliminary observations of the changing environment during the conditioning phase using X-Ray Absorption Fine Structure (XAFS) spectroscopy. XAFS was recorded for a Pt/C cathode at the Pt L3-edge and a PtCo/C cathode at both the Pt L3-edge and Co K-edge. Using precision machined graphite cell-blocks, both transmission and fl uorescence data were recorded at Sector 12-BM-B of Argonne National Laboratory’s Advanced Photon Source. The fl uorescence and transmission edge steps allow for a working description of the changing electrocatalyst environment, especially water concentration, at the anode and cathode as functions of operating parameters. These features are discussed in the context of how future analysis may correlate with potential, current and changing apparent thickness of the membrane electrode assembly through loss of catalyst materials (anode, cathode, carbon support). Such direct knowledge of the effect of the conditioning protocol on the electrocatalyst may lead to better catalyst design. In turn, this may lead to minimizing, or even eliminating, the conditioning period.

Phelan, B.T.; Myers, D.J.; Smith, M.C.

2009-01-01T23:59:59.000Z

243

Process for Low Cost Domestic Production of LIB Cathode Materials  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Received 472K * FY10 Funding Expected 890K Barriers * Reduce the production cost of Cathode Material * Meet PHEV battery requirements for a 40 mile all-electric range *...

244

Characterization of New Cathode Materials using Synchrotron-based...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Techniques and the Studies of Li-Air Batteries Characterization of New Cathode Materials using Synchrotron-based X-ray Techniques and the Studies of Li-Air Batteries 2009 DOE...

245

Synthesis, Characterization and Performance of Cathodes for Lithium Ion Batteries  

E-Print Network (OSTI)

Graphene-enhanced hybrid phase change materials for thermalphase, capacity and volume change information. 12 .. 12 Table 2 Summary of cathode and anode materialsphase, capacity and volume change information. 12 The last method involved seeking new materials.

Zhu, Jianxin

2014-01-01T23:59:59.000Z

246

Burst Radio-Frequency Excited Pulsed Hollow-Cathode Lamp  

Science Journals Connector (OSTI)

Transient emission characteristics of a hollow-cathode lamp driven by a pulsed current in combination with a radio-frequency burst signal are described. The radio-frequency field...

Araki, Tsutomu; Walters, John P; Minami, Shigeo

1980-01-01T23:59:59.000Z

247

Synthesis, Characterization and Performance of Cathodes for Lithium Ion Batteries  

E-Print Network (OSTI)

battery used for hybrid electric vehicles (HEVs) or electric vehicles (EVs) due to its low cost, low toxicity, thermal andthermal stability. 109-112 Thus, it proves to be a promising candidate cathode in battery

Zhu, Jianxin

2014-01-01T23:59:59.000Z

248

Design and Evaluation of Novel High Capacity Cathode Materials...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

17johnson2011p.pdf More Documents & Publications Design and Evaluation of Novel High Capacity Cathode Materials Lithium Source For High Performance Li-ion Cells Lithium Source...

249

Cathode Synthesis and Voltage Fade: Designed Solutions Based...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

like to work with others * Li-rich Mn-rich cathodes have a VF - Theory focuses on thermodynamics of structures and components - Mechanism likely driven by the kinetics * Can we...

250

Cathodic Arc Deposition of Copper Oxide Thin Films  

E-Print Network (OSTI)

in the range 1-1.25 GHz, UHV compatible, and very adhesivefulfill the requirements for UHV compatibility. A cathodic85 MPa) and fulfill all UHV requirements. The deposition

MacGill, R.A.

2011-01-01T23:59:59.000Z

251

Electrochemically Stable Cathode Current Collectors for Rechargeable Magnesium Batteries  

SciTech Connect

Rechargeable Mg batteries are attractive energy storage systems and could bring cost-effective energy solutions. Currently, however, no practical cathode current collectors that can withstand high voltages in Mg2+ electrolytes has been identified and therefore cathode research is greatly hindered. Here we identified that two metals, Mo and W, are electrochemically stable through formation of surface passive layers. The presented results could have significant impacts on the developments of high voltage Mg batteries.

Cheng, Yingwen; Liu, Tianbiao L.; Shao, Yuyan; Engelhard, Mark H.; Liu, Jun; Li, Guosheng

2014-01-01T23:59:59.000Z

252

Safety and Training | Advanced Photon Source  

NLE Websites -- All DOE Office Websites (Extended Search)

Transportation Safety Waste Handling APS: (see also: centraldocs.aps.anl.gov) Conduct of Operations Manual PDF Managing Minor Work Projects PDF Safety Assessment Document (SAD)...

253

Development and evaluation of carbon and binder loading in low-cost activated carbon cathodes for air-cathode microbial fuel cells{  

E-Print Network (OSTI)

Development and evaluation of carbon and binder loading in low-cost activated carbon cathodes materials in order to optimize and extend the lifetime of AC cathodes in MFCs. 1. Introduction A microbial, with the cathode typically limiting power production.5,6 Catalysts can be used to reduce the activation energy

254

Cathodes manufacturing processes for high-rate Li/SOCl/sub 2/ batteries  

SciTech Connect

Influence of type of carbon black, wetting agent, teflon content (up to 50 %), and carbon paste processing on cathodes characteristics and performances were evaluated. Single cell tests at 30 mA/cm/sup 2/ indicated that high cathode efficiencies could be achieved with various cathode formulations, even with a teflon content of 50 %. Discharge performances on glassy carbon cathodes and analysis of pores size distribution in the porous cathode provided baselines for the interpretation of the above-mentioned results as well as a better understanding of carbon cathode behaviour in Li/SOCl/sub 2/ cells.

Danel, V.; Descroix, J.P.; Petit, A.

1983-10-01T23:59:59.000Z

255

Degradation characteristics of air cathode in zinc air fuel cells  

Science Journals Connector (OSTI)

Abstract The zinc air fuel cell (ZAFC) is a promising candidate for electrical energy storage and electric vehicle propulsion. However, its limited durability has become a major obstacle for its successful commercialization. In this study, 2-cell stacks, 25 cm² cells and three-electrode half-cells are constructed to experimentally investigate the degradation characteristics of the air cathode. The results of electrochemical tests reveal that the peak power density for the 25 cm2 cell with a new air cathode is 454 mW cm?2, which is twice as the value of the used air cathode. The electrochemical impedance analysis shows that both the charge transfer resistance and the mass transfer resistance of the used air cathodes have increased, suggesting that the catalyst surface area and gas diffusion coefficient have decreased significantly. Additionally, the microstructure and morphology of the catalytic layer (CL) and gas diffusion layer (GDL) are characterized by scanning electron microscopes (SEM). SEM results confirm that the micropores in CL and GDL of the used air cathode are seriously clogged, and many catalyst particles are lost. Therefore, the performance degradation is mainly due to the clogging of micropores and loss of catalyst particles. Furthermore, hypotheses of degradation mechanism and mitigation strategies for GDL and CL are discussed briefly.

Ze Ma; Pucheng Pei; Keliang Wang; Xizhong Wang; Huachi Xu; Yongfeng Liu; Guanlin peng

2015-01-01T23:59:59.000Z

256

Microsoft PowerPoint - 9-04 Westsik Hanford SWFT EM Tech Exchange PNNL-SA-76075 ANL r2.pptx  

NLE Websites -- All DOE Office Websites (Extended Search)

Secondary Waste Form Secondary Waste Form Testing Joseph H. Westsik, Jr. EM Pierce, W Um, RP Pires, RJ Serne, SK Sundaram, GB Josephson Pacific Northwest National Laboratory W Gong, W Lutze, CUA/VSL, D Singh, ANL EM Waste Processing Technical Exchange November 16-18, 2010 Print Close Secondary Waste Form Testing Purpose: Conduct a testing program to support a waste form down selection and the long-term durability evaluation of a waste form(s) for the solidification of secondary wastes from the treatment and immobilization of Hanford radioactive tank wastes. Client: Washington River Protection Solutions Phase 1: Identify and assess viability of waste form candidates Phase 2: Develop, optimize, and characterize waste forms to support down selection Phase 3: Provide data on the selected waste form to

257

Photovoltaic power without batteries for continuous cathodic protection and an alternate photovoltaic/ultracapacitor combined power source  

SciTech Connect

The Coastal Systems Station (COASTSYSTA) designed, installed, and started up on 20 January 1990, a state-of-the-art stand-alone photovoltaic powered impressed current cathodic protection system (PVCPSYS) not requiring any backup power for steel and iron submerged structures. The PVCPSYS, installed on a 775-foot steel sheet piling of a Navy dock bulkhead, provides complete, continuous corrosion protection. The PVCPSYS has been in operation for more than five years, has not required any repair or maintenance, and is environmentally clean. Initial cost savings of the PVCPSYS versus conventional cathodic protection system was $46,000. A second PVCPSYS was installed on another 800-foot bulkhead on 21 May 1993. It is also providing complete corrosion protection without backup power. Performance is well documented. Other potential applications are moth-balled ships, locks, dams, bridges, pipelines, and similar structures. These systems are considered a major advance by Sandia and the Department of Defense (DOD) Photovoltaic Review Committee. An ultracapacitor, a recent hi-tech development that is environmentally clean, will be incorporated in the PVCPSYS when required to enhance the system`s capability. A photovoltaic/ultracapacitor (or equivalent) combined power source operating under adverse conditions, and/or to satisfy or meet regulations will assure cathodic protection, including pipelines carrying combustibles or other products that could otherwise create environmental problems. Patents are pending on this PVCPSYS and the photovoltaic/ ultracapacitor powered systems.

Muehl, W.W. Sr. [Coastal Systems Station, Panama City, FL (United States). Dahlgren Div.

1995-12-31T23:59:59.000Z

258

Sr doped Co substituted Li nickelate cathode materials for Li cells with improved cycling and thermal stability  

Science Journals Connector (OSTI)

Samples of cathode material were synthesized from a highly dispersed precursor ... thin film of Li-borate glass. The cathode active material (CAM) was mixed with 15 wt. ... and pressed on thin Al discs. The cathodes

R. Moshtev; P. Zlatilova; S. Vassilev

2006-07-01T23:59:59.000Z

259

The slope parameter approach to marine cathodic protection design and its application to impressed current systems  

SciTech Connect

The recently developed slope parameter approach to design of galvanic anode cathodic protection (cp) systems for marine structures constitutes an advancement in this technology compared to current practice, primarily because the former is first principles based and the latter is an empirical algorithm. In this paper, the slope parameter approach is reviewed; and related applications for which it can be utilized, including (1) design of new and retrofit cp systems, (2) evaluation of potential survey data, and (3) cp system design for complex geometries, are mentioned. The design current density is identified as the single remaining parameter for which values must be projected solely by experience or experimentation. In addition, the slope parameter approach is applied to the results of impressed current cp experiments, and it is shown how parameters for this can be interrelated with those of galvanic anode cp. Advantages of this capability are identified and discussed.

Hartt, W.H.

1999-07-01T23:59:59.000Z

260

Argonne Lab's Breakthrough Cathode Technology Powers Electric Vehicles of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Argonne Lab's Breakthrough Cathode Technology Powers Electric Argonne Lab's Breakthrough Cathode Technology Powers Electric Vehicles of Today Argonne Lab's Breakthrough Cathode Technology Powers Electric Vehicles of Today February 14, 2011 - 6:15pm Addthis Jeff Chamberlain Speaks at Brookings Battery Forum | Photo Courtesy of Audra Capas, 5StarPR Jeff Chamberlain Speaks at Brookings Battery Forum | Photo Courtesy of Audra Capas, 5StarPR David Moore Presidential Management Fellow, Office of Energy Efficiency & Renewable Energy The Department of Energy has been investing in vehicle electrification for more than a decade, with results that speak for themselves: The battery technologies in almost all of the electric vehicles and hybrids on the road today were developed with support from the Department. As you may have read

Note: This page contains sample records for the topic "advanced anl cathode" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Nanosegregated Cathode Catalysts with Ultra-Low Platinum Loading  

NLE Websites -- All DOE Office Websites (Extended Search)

2009 DOE EERE Kick-off Meeting 2009 DOE EERE Kick-off Meeting Announcement No: DE-PS36-08GO98010 Topic: 1A Nanosegregated Cathode Catalysts with Ultra-Low Platinum Loading Argonne National Laboratory Materials Science Division PI: Nenad M. Markovic Co-PI: Vojislav R. Stamenkovic Subcontractors: * Oak Ridge National Laboratory - Karren More * Jet Propulsion Laboratory - NASA - S.R. Narayan * Brown University - Shouheng Sun * Indiana University Purdue - Goufeng Wang * 3M Company - Radoslav Atanasoski Overview Timeline * Project start: 9/2009 * Project end: 9/2012 Barriers ~ 30-40% (!!!) Cathode kinetics * The main losses: CATHODE 1) High content of Pt 2) Poor activity: Pt/C = Pt-poly/10 3) Durability (Pt dissolves: power loss) 4) Carbon support corrosion Budget * Total Project funding $ 6.5M

262

Process system and method for fabricating submicron field emission cathodes  

DOE Patents (OSTI)

A process method and system for making field emission cathodes exists. The deposition source divergence is controlled to produce field emission cathodes with height-to-base aspect ratios that are uniform over large substrate surface areas while using very short source-to-substrate distances. The rate of hole closure is controlled from the cone source. The substrate surface is coated in well defined increments. The deposition source is apertured to coat pixel areas on the substrate. The entire substrate is coated using a manipulator to incrementally move the whole substrate surface past the deposition source. Either collimated sputtering or evaporative deposition sources can be used. The position of the aperture and its size and shape are used to control the field emission cathode size and shape.

Jankowski, Alan F. (Livermore, CA); Hayes, Jeffrey P. (Ripon, CA)

1998-01-01T23:59:59.000Z

263

Electrosprayed polyaniline as cathode material for lithium secondary batteries  

SciTech Connect

Doped polyaniline with LiPF{sub 6} is electrosprayed onto aluminum foil using electrospinning technique, and evaluated as cathode active material for application in room-temperature lithium batteries. Doping level is characterized using FTIR and UV-vis spectroscopy. In FTIR Spectra, characteristic peaks of PANI are shifted to lower bands as a result of doping which indicates the effectiveness of doping. Doping level is also confirmed by UV-vis spectra. Surface morphology of the cathode is studied using scanning electron microscope. Electrochemical evaluation of the cell using electrosprayed PANI as cathode show good cycling properties. The cell delivers a high discharge value of 142.5 mAh/g which is about 100% of theoretical capacity, and the capacity is lowered during cycle and reached 61% of theoretical capacity after 50 cycles. The cell delivers a stable but lower discharge capacity at higher C-rates.

Manuel, James; Raghavan, Prasanth; Shin, Chorong; Heo, Min-Yeong [Department of Chemical and Biological Engineering and Engineering Research Institute, Gyeongsang National University, 900, Gajwa-dong, Jinju 660-701 (Korea, Republic of)] [Department of Chemical and Biological Engineering and Engineering Research Institute, Gyeongsang National University, 900, Gajwa-dong, Jinju 660-701 (Korea, Republic of); Ahn, Jou-Hyeon, E-mail: jhahn@gnu.ac.kr [Department of Chemical and Biological Engineering and Engineering Research Institute, Gyeongsang National University, 900, Gajwa-dong, Jinju 660-701 (Korea, Republic of)] [Department of Chemical and Biological Engineering and Engineering Research Institute, Gyeongsang National University, 900, Gajwa-dong, Jinju 660-701 (Korea, Republic of); Noh, Jung-Pil; Cho, Gyu-Bong; Ryu, Ho-Suk; Ahn, Hyo-Jun [School of Nano and Advanced Materials Engineering, Gyeongsang National University, 900, Gajwa-dong, Jinju 660-701 (Korea, Republic of)] [School of Nano and Advanced Materials Engineering, Gyeongsang National University, 900, Gajwa-dong, Jinju 660-701 (Korea, Republic of)

2010-03-15T23:59:59.000Z

264

Photovoltaic power without batteries for continuous cathodic protection and an alternate photovoltaic/ultracapacitor combined power source  

SciTech Connect

The Coastal Systems Station (COASTSYSTA) designed, installed, and started up on 20 January 1990, a state-of-the-art stand alone photovoltaic powered impressed current cathodic protection system (PVCPSYS) not requiring any backup power for steel and iron submerged structures. The PVCPSYS, installed on a 775-foot steel sheet piling of a Navy dock bulkhead, provides complete, continuous corrosion protection. The PVCPSYS has been in operation for more than four years, has not required any repair or maintenance, and is environmentally clean. Initial cost savings of the PVCPSYS versus conventional cathodic protection system was $46,000. A second PVCPSYS was installed on another 800-foot bulkhead on 21 May 1993. It is also providing complete corrosion protection without backup power. These systems are considered a major advance by Sandia and the Department of Defense (DOD) Photovoltaic Review Committee. An ultracapacitor, a recent hi-tech development that is environmentally clean, will be incorporated in the PVCPSYS when required to enhance the system`s capability. A photovoltaic/ultracapacitor (or equivalent) combined power source operating under adverse conditions, and/or to satisfy or meet regulations will assure cathodic protection, including pipelines carrying combustibles or other products that could otherwise create environmental problems. Patents are pending on this PVCPSYS and the photovoltaic/ultracapacitor powered systems. The objective of the initial project was to successfully demonstrate that renewable energy can efficiently and economically replace, or be used instead of, continuous nonrenewable power sources. An opportunity to cleanly show that photovoltaic power is practical and reliable was the result of a recommendation to provide cathodic protection to the Naval Diving and Salvage Training Center bulkhead.

Muehl, W.W. Sr. [Coastal Systems Station, Panama City, FL (United States)

1995-11-01T23:59:59.000Z

265

High-Efficiency, Magnetized, Virtual-Cathode Microwave Generator  

Science Journals Connector (OSTI)

Microwave generation by electron beams in virtual-cathode configurations can achieve significant power levels. However, most designs inherently have two competing mechanisms generating microwaves: the oscillating virtual cathode and the reflexing electrons. These mechanisms interfere destructively with each other. This paper reports investigation of a novel idea of using an external axial magnetic field and a thick anode with an appropriate collimating slot to extract the electron beam and to suppress the reflexing electrons. It was found that high-power, narrow-band, monochromatic microwaves could be generated with efficiency of 10% to 20%.

Thomas J. T. Kwan

1986-10-13T23:59:59.000Z

266

Numerical Investigation of the Effect of the Cathode Geometry on the Characteristics of an Electric Arc  

Science Journals Connector (OSTI)

The effect of the cathode geometry on the characteristics of an electric arc is treated. It is found that the characteristics of plasma in discharges with cathodes of different geometry (cone, ... . It is assumed...

R. M. Urusov; T. E. Urusova

267

Template Free Synthesis of LiV3O8 Nanorods as a Cathode Material...  

NLE Websites -- All DOE Office Websites (Extended Search)

Template Free Synthesis of LiV3O8 Nanorods as a Cathode Material for High-Rate Secondary Lithium Batteries . Template Free Synthesis of LiV3O8 Nanorods as a Cathode Material for...

268

SUPPLEMENTAL INFORMATION The Use and Optimization of Stainless Steel Mesh Cathodes in  

E-Print Network (OSTI)

SUPPLEMENTAL INFORMATION The Use and Optimization of Stainless Steel Mesh Cathodes in Microbial (or cm2 / cm2 ) Specific area per 7 cm2 cathode: 2 cm45.107 =Ã?S Specific area per reactor volume: 3232

269

Low Cost SiOx-Graphite and High Voltage Spinel Cathode | Department...  

Office of Environmental Management (EM)

Cathode Low Cost SiOx-Graphite and High Voltage Spinel Cathode 2011 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer Evaluation...

270

Factors affecting the discharge lifetime of lithium-molten nitrate thermal battery cells using soluble cathode materials  

Science Journals Connector (OSTI)

The use of soluble cathode materials in molten nitrate electrolyte thermal battery cells presents several problems related to cathode...? rich separator layer.

G. E. McManis; A. N. Fletcher; M. H. Miles

1986-09-01T23:59:59.000Z

271

Three-Dimensional Reconstruction of Porous LSCF Cathodes D. Gostovic,*,z  

E-Print Network (OSTI)

In this initial study the electrochemically active region of a La0.8Sr0.2Co0.2Fe0.8O3- LSCF cathodeThree-Dimensional Reconstruction of Porous LSCF Cathodes D. Gostovic,*,z J. R. Smith,* D. P and heat.1 They consist of three basic layers: cathode, electrolyte, and anode. The cathode is a porous

Florida, University of

272

Challenges and Constraints of Using Oxygen Cathodes in Microbial Fuel Cells  

Science Journals Connector (OSTI)

Challenges and Constraints of Using Oxygen Cathodes in Microbial Fuel Cells ... The optimization of the cathode preparation (the choice of binder (5), the binder/catalyst ratio, the catalyst processing etc.) was beyond the scope of this study and should be the focus of further, technological investigations. ... Optimized cathode preparation procedures will most likely help increasing this factor and result in a further improved cathode performance at lower catalyst loads. ...

Feng Zhao; Falk Harnisch; Uwe Schröder; Fritz Scholz; Peter Bogdanoff; Iris Herrmann

2006-05-25T23:59:59.000Z

273

Project Description In the search for superior batteries, the road to success is paved with advanced materials: better  

E-Print Network (OSTI)

Project Description In the search for superior batteries, the road to success is paved with advanced materials: better cathodes, better anodes, better electrolytes. The universe of candidates is so of this proposal is that by leveraging the advances in informatics and high-throughput experimental

Sadoway, Donald Robert

274

Modeling Studies of a Cylindrical Polymer Electrolyte Membrane Fuel Cell Cathode  

Science Journals Connector (OSTI)

The cathode catalyst layer is modeled using spherical agglomerate characterization. ... (16-19) In the present work, we have developed a two-dimensional (2-D) steady-state model of a cylindrical PEMFC cathode under air-breathing and pressurized conditions. ... We adopt an agglomerate catalyst layer model and recast it into a compact form for optimization of polymer electrolyte fuel cell cathodes. ...

Srinivasarao Modekurti; Brian Bullecks; Debangsu Bhattacharyya; Raghunathan Rengaswamy

2012-03-12T23:59:59.000Z

275

Study of Ionic Conductivity Profiles of the Air Cathode of a PEMFC by AC Impedance Spectroscopy  

E-Print Network (OSTI)

Study of Ionic Conductivity Profiles of the Air Cathode of a PEMFC by AC Impedance Spectroscopy membrane fuel cell PEMFC cathode by ac impedance measurement at open-circuit potential conditions by impregnating a proton-conducting ionomer in the catalyst active layer of the cathode of a polymer electrolyte

276

Methanol adsorbates on the DMFC cathode and their effect on the cell performance  

E-Print Network (OSTI)

Methanol adsorbates on the DMFC cathode and their effect on the cell performance J. Prabhuram, T performance was due to the permeated methanol adsorbates on platinum sites of the cathode, which impede utilized to get rid of the methanol adsorbates from the cathode electrochemically by sweeping from 0 to 1

Zhao, Tianshou

277

A reduced temperature solid oxide fuel cell with three-dimensionally ordered macroporous cathode  

SciTech Connect

Three-dimensionally ordered macroporous cathode was fabricated for a zirconia based micro-tubular solid oxide fuel cells (SOFCs). Three different cathodes (cathode A, no pore former; cathode B, with pore former (1.5 {micro}m in diameter); cathode C, with pore former (0.8 {micro}m in diameter)) were compared to investigate how the microstructure of it affected the cell performance at various operating temperatures. Micro-sized pores were well distributed within cathode B and C. The total porosity of cathode A is 35%, while it respectively reached 42 and 50% for cathodes B and C. At the same time, the specific surface area of them was 28.8 and 52.0% larger than that of the cathode A. As a result, the peak power density of the zirconia based cell, with cathode C, was 0.25 and 0.56 W cm{sup -2} at 550 and 600 C, while the respective value was just 0.11 and 0.30 W cm{sup -2} for the cell with cathode A. Thus, optimizing microstructure of cathode should be one of the best approaches for lowering the operating temperature for SOFCs.

Liang, B.; Suzuki, T.; Hamamoto, K.; Yamaguchi, T.; Sumi, H.; Fujishiro, Y.; Ingram, B. J.; Carter, J. D. (Chemical Sciences and Engineering Division); (National Institute of Advanced Industrial Science and Technology)

2012-01-01T23:59:59.000Z

278

Divalent Iron Nitridophosphates: A New Class of Cathode Materials for Li-Ion Batteries  

Science Journals Connector (OSTI)

(4-6) Here we demonstrate the design of a battery cathode material incorporating N3– anions as a distinct structural building block. ... Lithium transition metal phosphates are of interest as storage cathodes for rechargeable Li batteries because of their high energy d., low raw materials cost, environmental friendliness and safety. ... The reversible specific capacities for the cathode and anode active materials were detd. ...

Jue Liu; Xiqian Yu; Enyuan Hu; Kyung-Wan Nam; Xiao-Qing Yang; Peter G. Khalifah

2013-09-18T23:59:59.000Z

279

Impact of salinity on cathode catalyst performance in microbial fuel cells (MFCs)  

E-Print Network (OSTI)

not been previously examined. Three different types of cathode materials were tested here with increasingly of catalyst used with more saline wastewaters. While Pt oxygen reduction activity is reduced, CoTMPP cathodeImpact of salinity on cathode catalyst performance in microbial fuel cells (MFCs) Xi Wang

280

Single-layer graphene cathodes for organic photovoltaics Marshall Cox,1,a  

E-Print Network (OSTI)

using graphene as the cathode material. © 2011 American Institute of Physics. doi:10 study that has utilized graphene as a cathode material.15 In this work, multilayer graphene modified as a cathode, yielding an active area of 0.16 cm2 . I-V measurements were performed under AM 1.5 solar simu

Kim, Philip

Note: This page contains sample records for the topic "advanced anl cathode" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Electrochemical characterization of cobalt-encapsulated nickel as cathodes for MCFC  

E-Print Network (OSTI)

the operating life of the cell. Apart from this, cathode dissolution results in loss of active material and in decrease of the active surface area available for the oxygen reduction reaction (cathodic reac- tion problem is focused on varying the molten salt constituents [6,7] or using alternate cathode materials [8

Popov, Branko N.

282

The fractal nature of vacuum arc cathode spots  

SciTech Connect

Cathode spot phenomena show many features of fractals, for example self-similar patterns in the emitted light and arc erosion traces. Although there have been hints on the fractal nature of cathode spots in the literature, the fractal approach to spot interpretation is underutilized. In this work, a brief review of spot properties is given, touching the differences between spot type 1 (on cathodes surfaces with dielectric layers) and spot type 2 (on metallic, clean surfaces) as well as the known spot fragment or cell structure. The basic properties of self-similarity, power laws, random colored noise, and fractals are introduced. Several points of evidence for the fractal nature of spots are provided. Specifically power laws are identified as signature of fractal properties, such as spectral power of noisy arc parameters (ion current, arc voltage, etc) obtained by fast Fourier transform. It is shown that fractal properties can be observed down to the cutoff by measurement resolution or occurrence of elementary steps in physical processes. Random walk models of cathode spot motion are well established: they go asymptotically to Brownian motion for infinitesimal step width. The power spectrum of the arc voltage noise falls as 1/f {sup 2}, where f is frequency, supporting a fractal spot model associated with Brownian motion.

Anders, Andre

2005-05-27T23:59:59.000Z

283

Cathode porous transport irreversibility model for PEM fuel cell design  

Science Journals Connector (OSTI)

The influence is studied of slip-irreversibility at the interface between the gas diffusion layer, also referred to here as the porous transport layer, and the catalyst layer of a proton exchange membrane fuel cell (PEMFC). A two-dimensional cathode ... Keywords: catalyst layer, exergy, gas diffusion layer, slip flow irreversibility

E. O. B. Ogedengbe; M. A. Rosen

2009-02-01T23:59:59.000Z

284

Operational test report -- Project W-320 cathodic protection systems  

SciTech Connect

Washington Administrative Code (WAC) 173-303-640 specifies that corrosion protection must be designed into tank systems that treat or store dangerous wastes. Project W-320, Waste Retrieval Sluicing System (WRSS), utilizes underground encased waste transfer piping between tanks 241-C-106 and 241-AY-102. Corrosion protection is afforded to the encasements of the WRSS waste transfer piping through the application of earthen ionic currents onto the surface of the piping encasements. Cathodic protection is used in conjunction with the protective coatings that are applied upon the WRSS encasement piping. WRSS installed two new two rectifier systems (46 and 47) and modified one rectifier system (31). WAC 173-303-640 specifies that the proper operation of cathodic protection systems must be confirmed within six months after initial installation. The WRSS cathodic protection systems were energized to begin continuous operation on 5/5/98. Sixteen days after the initial steady-state start-up of the WRSS rectifier systems, the operational testing was accomplished with procedure OTP-320-006 Rev/Mod A-0. This operational test report documents the OTP-320-006 results and documents the results of configuration testing of integrated piping and rectifier systems associated with the W-320 cathodic protection systems.

Bowman, T.J.

1998-06-16T23:59:59.000Z

285

Hydrogen Evolution at Activated Nisx-Cathodes in Water Electrolysis  

Science Journals Connector (OSTI)

NiSx-coated nickel cathodes are used for commercial water electrolysis in concentrated KOH solutions. Such electrodes have ... to 5 mol% during 16 days of electrolysis and to about 0.7 mol% after...1.00–1.03. The...

B. Børresen; A. Bjørgum; G. Hagen; R. Tunold…

1998-01-01T23:59:59.000Z

286

Brian KarrerPPDyL Lithium-fed Cathode Experiment  

E-Print Network (OSTI)

and light � Big picture: develop a thruster that could be used for a Mars mission #12;Brian KarrerPPDyL Outline � Introduction to electric propulsion and plasma � Objectives of the Li-fed cathode research � Introduction to Multi-color Video Pyrometry � Data and analysis method � Results � Conclusions #12;Brian Karrer

Petta, Jason

287

Functionally Graded Cathodes for Solid Oxide Fuel Cells  

SciTech Connect

One primary suspected cause of long-term performance degradation of solid oxide fuels (SOFCs) is the accumulation of chromium (Cr) species at or near the cathode/electrolyte interface due to reactive Cr molecules originating from Cr-containing components (such as the interconnect) in fuel cell stacks. To date, considerable efforts have been devoted to the characterization of cathodes exposed to Cr sources; however, little progress has been made because a detailed understanding of the chemistry and electrochemistry relevant to the Cr-poisoning processes is still lacking. This project applied multiple characterization methods - including various Raman spectroscopic techniques and various electrochemical performance measurement techniques - to elucidate and quantify the effect of Cr-related electrochemical degradation at the cathode/electrolyte interface. Using Raman microspectroscopy the identity and location of Cr contaminants (SrCrO{sub 4}, (Mn/Cr){sub 3}O{sub 4} spinel) have been observed in situ on an LSM cathode. These Cr contaminants were shown to form chemically (in the absence of current flowing through the cell) at temperatures as low as 625 C. While SrCrO{sub 4} and (Mn/Cr){sub 3}O{sub 4} spinel must preferentially form on LSM, since the LSM supplies the Sr and Mn cations necessary for these compounds, LSM was also shown to be an active site for the deposition of Ag{sub 2}CrO{sub 4} for samples that also contained silver. In contrast, Pt and YSZ do not appear to be active for formation of Cr-containing phases. The work presented here supports the theory that Cr contamination is predominantly chemically-driven and that in order to minimize the effect, cathode materials should be chosen that are free of cations/elements that could preferentially react with chromium, including silver, strontium, and manganese.

Harry Abernathy; Meilin Liu

2006-12-31T23:59:59.000Z

288

Advanced Photon Source | Combining Scanning Probe Microscopy and  

NLE Websites -- All DOE Office Websites (Extended Search)

0.21.2013 0.21.2013 Scientists study old photos for new solutions to corrosion Each week, Viewpoints features interviews with guests that have expertise and real-word experience regarding specific issues. The program is aired on over 450 radio stations throughout the country. This weeks featured guests are Volker Rose, Physicist with the Advanced Photon Source and Center for Nanoscale Materials, Argonne National Laboratory, (www.anl.gov). and Edward Vicenzi, Research scientist at the Smithsonian Institution's Museum Conservation Institute, (www.si.edu/mci). Material failure caused by corrosion is dangerous and costs billions of dollars every year. What if you could figure out how to prevent and treat corrosion at the tiniest "nano" level before it has a chance to cause a

289

ANL/APS/TB-54, Dose Calculations using MARS for Bremsstrahlung Beam Stops and Collimators in APS Beamline Stations  

NLE Websites -- All DOE Office Websites (Extended Search)

4 4 DOSE CALCULATIONS USING MARS FOR BREMSSTRAHLUNG BEAM STOPS AND COLLIMATORS IN APS BEAMLINE STATIONS Jeffrey C. Dooling Accelerator Systems Division Advanced Photon Source August 2010 This work is sponsored by the US Department of Energy Office of Science The submitted manuscript has been created by UChicago Argonne, LLC, Operator of Argonne National Laboratory ("Argonne"). Argonne, a U.S. Department of Energy Office of Science laboratory, is operated under Contract No. DE-AC02-06CH11357. The U.S. Government retains for itself, and others acting on its behalf, a paid-up nonexclusive, irrevocable worldwide license in said article to reproduce, prepare derivative works, distribute copies to the public, and perform publicly and display

290

Electricity generation from sediment microbial fuel cells with algae-assisted cathodes  

Science Journals Connector (OSTI)

Abstract One major limiting factor for sediment microbial fuel cells (SMFC) is the low oxygen reduction rate in the cathode. The use of the photosynthetic process of the algae is an effective strategy to increase the oxygen availability to the cathode. In this study, \\{SMFCs\\} were constructed by introducing the algae (Chlorella vulgaris) to the cathode, in order to generate oxygen in situ. Cyclic voltammetry and dissolved oxygen analysis confirmed that C. vulgaris in the cathode can increase the dissolved oxygen concentration and the oxygen reduction rate. We showed that power generation of SMFC with algae-assisted cathode was 21 mW m?2 and was further increased to 38 mW m?2 with additional carbon nanotube coating in the cathode, which was 2.4 fold higher than that of the SMFC with bare cathode. This relatively simple method increases the oxygen reduction rate at a low cost and can be applied to improve the performance of SMFCs.

De-Bin Wang; Tian-Shun Song; Ting Guo; Qinglu Zeng; Jingjing Xie

2014-01-01T23:59:59.000Z

291

Modular cathode assemblies and methods of using the same for electrochemical reduction  

DOE Patents (OSTI)

Modular cathode assemblies are useable in electrolytic reduction systems and include a basket through which fluid electrolyte may pass and exchange charge with a material to be reduced in the basket. The basket can be divided into upper and lower sections to provide entry for the material. Example embodiment cathode assemblies may have any shape to permit modular placement at any position in reduction systems. Modular cathode assemblies include a cathode plate in the basket, to which unique and opposite electrical power may be supplied. Example embodiment modular cathode assemblies may have standardized electrical connectors. Modular cathode assemblies may be supported by a top plate of an electrolytic reduction system. Electrolytic oxide reduction systems are operated by positioning modular cathode and anode assemblies at desired positions, placing a material in the basket, and charging the modular assemblies to reduce the metal oxide.

Wiedmeyer, Stanley G; Barnes, Laurel A; Williamson, Mark A; Willit, James L

2014-12-02T23:59:59.000Z

292

Anode-cathode power distribution systems and methods of using the same for electrochemical reduction  

DOE Patents (OSTI)

Power distribution systems are useable in electrolytic reduction systems and include several cathode and anode assembly electrical contacts that permit flexible modular assembly numbers and placement in standardized connection configurations. Electrical contacts may be arranged at any position where assembly contact is desired. Electrical power may be provided via power cables attached to seating assemblies of the electrical contacts. Cathode and anode assembly electrical contacts may provide electrical power at any desired levels. Pairs of anode and cathode assembly electrical contacts may provide equal and opposite electrical power; different cathode assembly electrical contacts may provide different levels of electrical power to a same or different modular cathode assembly. Electrical systems may be used with an electrolyte container into which the modular cathode and anode assemblies extend and are supported above, with the modular cathode and anode assemblies mechanically and electrically connecting to the respective contacts in power distribution systems.

Koehl, Eugene R; Barnes, Laurel A; Wiedmeyer, Stanley G; Williamson, Mark A; Willit, James L

2014-01-28T23:59:59.000Z

293

Using Multispectral Imaging to Measure Temperature Profiles and Emissivity of Large Thermionic Dispenser, Cathodes  

SciTech Connect

Thermionic dispenser cathodes are widely used in modern high-power microwave tubes. Use of these cathodes has led to significant improvement in performance. In recent years these cathodes have been used in electron linear accelerators (LINACs), particularly in induction LINACs, such as the Experimental Test Accelerator at Lawrence Livermore National Laboratory and the Relativistic Test Accelerator at Lawrence Berkeley National Laboratory. For induction LINACs, the thermionic dispenser cathode provides greater reproducibility, longer pulse lengths, and lower emittance beams than does a field emission cathode. Los Alamos National Laboratory is fabricating a dual-axis X-ray radiography machine called dual-axis radiograph hydrodynamic test (DARHT). The second axis of DARHT consists of a 2-kA, 20-MeV induction LINAC that uses a 3.2-MeV electron gun with a tungsten thermionic-dispenser cathode. Typically the DARHT cathode current density is 10 A/cm{sup 2} at 1050 C. Under these conditions current density is space-charge limited, which is desirable since current density is independent of temperature. At lower temperature (the temperature-limited regime) there are variations in the local current density due to a nonuniform temperature profile. To obtain the desired uniform current density associated with space-charge limited operation, the coolest area on the cathode must be at a sufficiently high temperature so that the emission is space-charge limited. Consequently, the rest of the cathode is emitting at the same space-charge-limited current density but is at a higher temperature than necessary. Because cathode lifetime is such a strong function of cathode temperature, there is a severe penalty for nonuniformity in the cathode temperature. For example, a temperature increase of 50 C means cathode lifetime will decrease by a factor of at least four. Therefore, we are motivated to measure the temperature profiles of our large-area cathodes.

D.F. Simmons; C.M. Fortgang; D.B. Holtkamp

2001-09-01T23:59:59.000Z

294

Heterogeneous electrocatalysis in porous cathodes of solid oxide fuel cells  

E-Print Network (OSTI)

A general physics-based model is developed for heterogeneous electrocatalysis in porous electrodes and used to predict and interpret the impedance of solid oxide fuel cells. This model describes the coupled processes of oxygen gas dissociative adsorption and surface diffusion of the oxygen intermediate to the triple phase boundary, where charge transfer occurs. The model accurately captures the Gerischer-like frequency dependence and the oxygen partial pressure dependence of the impedance of symmetric cathode cells. Digital image analysis of the microstructure of the cathode functional layer in four different cells directly confirms the predicted connection between geometrical properties and the impedance response. As in classical catalysis, the electrocatalytic activity is controlled by an effective Thiele modulus, which is the ratio of the surface diffusion length (mean distance from an adsorption site to the triple phase boundary) to the surface boundary layer length (square root of surface diffusivity div...

Fu, Y; Bertei, A; Qi, C; Mohanram, A; Pietras, J D; Bazant, M Z

2014-01-01T23:59:59.000Z

295

Performance of Magnesium Cathode in the S Band RF Gun  

SciTech Connect

In this paper, we present the preliminary results of the performance of magnesium cathode in a high frequency RF gun. The quantum efficiency of magnesium showed a dramatic improvement upon laser cleaning, increasing from 10{sup -5} to 4x10{sup -4} after two hours of cleaning. The spatial uniformity of emission also improved from a spot to spot variation of 10 to a variation of 2. Measurements with charges >1 nC indicate that the transient variation of the field due to the shielding effect of the electron in the vicinity of the cathode may play a critical role in the efficient extraction of electrons. Comprehensive theory that includes the electron emission in the presence of a time dependent Schottky effect and RF effects will be discussed.

Srinivasan-Rao, T.; /Brookhaven; Palmer, D.T.; /SLAC; Ben-Zvi, I.; /Brookhaven; Miller, R.H.; /SLAC; Wang, X.J.; Woodle, M.; /Brookhaven

2011-09-01T23:59:59.000Z

296

Field testing the criteria for cathodic protection of buried pipelines  

SciTech Connect

Five criteria for cathodic protection of buried pipelines were studied by a review of the literature, and by experimentation in the laboratory and in the field in soil environments. The five criteria studied were the following: (1) {minus}850-mV on and polarized (IR-compensated) potential, (2) 300-mV voltage shift, (3) 100-mV polarization, (4) Tafel potential, and (5) net cathodic current. Each criterion was found to provide an indication of corrosion and its control. Environmental conditions (the type of soil and its physical constituents, moisture content, oxygen level, temperature; and the presence of anaerobic bacteria) were found to be important in affecting the actual requirements and modifications to the presently accepted minimum values for the criteria. Determination of IR-voltage drops in the soil was concluded to be important for accurate interpretation of the {minus}850-mV potential and 300-mV voltage-shift criteria.

Barlo, T.J. [Northwestern Univ., Evanston, IL (United States)

1995-12-31T23:59:59.000Z

297

Advanced Materials  

NLE Websites -- All DOE Office Websites (Extended Search)

Advanced Materials Advanced Materials Advanced Materials Express Licensing Active Terahertz Metamaterial Devices Express Licensing Anion-Conducting Polymer, Composition, And Membrane Express Licensing Analysis Of Macromolecule, Liggands And Macromolecule-Lingand Complexes Express Licensing Carbon Microtubes Express Licensing Chemical Synthesis Of Chiral Conducting Polymers Express Licensing Forming Adherent Coatings Using Plasma Processing Express Licensing Hydrogen Scavengers Express Licensing Laser Welding Of Fused Quartz Express Licensing Multiple Feed Powder Splitter Negotiable Licensing Boron-10 Neutron Detectors for Helium-3 Replacement Negotiable Licensing Insensitive Extrudable Explosive Negotiable Licensing Durable Fuel Cell Membrane Electrode Assembly (MEA) Express Licensing Method of Synthesis of Proton Conducting Materials

298

Advances in Fe(VI) charge storage: Part I. Primary alkaline super-iron batteries  

Science Journals Connector (OSTI)

Recent advances in super-iron batteries, based on an unusual Fe(VI) cathodic charge storage, are presented. Fe(VI) cathodes that have been demonstrated in super-iron batteries include the synthesized Fe(VI) compound with three-electron cathodic charge capacity Na2FeO4, K2FeO4, Rb2FeO4, Cs2FeO4 (alkali Fe(VI) salts), alkali earth Fe(VI) salts BaFeO4, SrFeO4, and also a transition Fe(VI) salt Ag2FeO4 which exhibits a five-electron cathodic charge storage. This paper focus on the primary alkaline Fe(VI) charge storage in aqueous electrolyte systems. Primary alkaline super-iron batteries exhibit a higher capacity than conventional alkaline batteries. Configuration optimization, enhancement and mediation of Fe(VI) cathode charge transfer of primary Fe(VI) alkaline batteries are summarized. Composite Fe(VI)/Mn(IV or VII), Fe(VI)/Ag(II) and zirconia coating stabilized Fe(VI)/Ag(II) cathode alkaline batteries are also illustrated.

Xingwen Yu; Stuart Licht

2007-01-01T23:59:59.000Z

299

Negative ion source with hollow cathode discharge plasma  

DOE Patents (OSTI)

A negative ion source of the type where negative ions are formed by bombarding a low-work-function surface with positive ions and neutral particles from a plasma, wherein a highly ionized plasma is injected into an anode space containing the low-work-function surface. The plasma is formed by hollow cathode discharge and injected into the anode space along the magnetic field lines. Preferably, the negative ion source is of the magnetron type.

Hershcovitch, Ady (Mt. Sinai, NY); Prelec, Krsto (Setauket, NY)

1983-01-01T23:59:59.000Z

300

Fuel cell having dual electrode anode or cathode  

DOE Patents (OSTI)

A fuel cell that is characterized by including a dual electrode anode that is operable to simultaneously electro-oxidize a gaseous fuel and a liquid fuel. In alternative embodiments, a fuel cell having a single electrode anode is provided with a dual electrode cathode that is operable to simultaneously reduce a gaseous oxidant and a liquid oxidant to electro-oxidize a fuel supplied to the cell.

Findl, E.

1984-04-10T23:59:59.000Z

Note: This page contains sample records for the topic "advanced anl cathode" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Negative ion source with hollow cathode discharge plasma  

DOE Patents (OSTI)

A negative ion source of the type where negative ions are formed by bombarding a low-work-function surface with positive ions and neutral particles from a plasma, wherein a highly ionized plasma is injected into an anode space containing the low-work-function surface is described. The plasma is formed by hollow cathode discharge and injected into the anode space along the magnetic field lines. Preferably, the negative ion source is of the magnetron type.

Hershcovitch, A.; Prelec, K.

1980-12-12T23:59:59.000Z

302

Fuel cell having dual electrode anode or cathode  

DOE Patents (OSTI)

A fuel cell that is characterized by including a dual electrode anode that is operable to simultaneously electro-oxidize a gaseous fuel and a liquid fuel. In alternative embodiments, a fuel cell having a single electrode anode is provided with a dual electrode cathode that is operable to simultaneously reduce a gaseous oxidant and a liquid oxidant to electro-oxidize a fuel supplied to the cell.

Findl, Eugene (Coram, NY)

1985-01-01T23:59:59.000Z

303

Apparatus and method for treating a cathode material provided on a thin-film substrate  

DOE Patents (OSTI)

An apparatus and method for treating a cathode material provided on a surface of a continuous thin-film substrate and a treated thin-film cathode having increased smoothness are disclosed. A web of untreated cathode material is moved between a feed mechanism and a take-up mechanism, and passed through a treatment station. The web of cathode material typically includes areas having surface defects, such as prominences extending from the surface of the cathode material. The surface of the cathode material is treated with an abrasive material to reduce the height of the prominences so as to increase an 85 degree gloss value of the cathode material surface by at least approximately 10. The web of cathode material may be subjected to a subsequent abrasive treatment at the same or other treatment station. Burnishing or lapping film is employed at a treatment station to process the cathode material. An abrasive roller may alternatively be used to process the web of cathode material. The apparatus and method of the present invention may also be employed to treat the surface of a lithium anode foil so as to cleanse and reduce the roughness of the anode foil surface.

Hanson, Eric J. (Hudson, WI); Kooyer, Richard L. (Hastings, MN)

2003-01-01T23:59:59.000Z

304

Apparatus and method for treating a cathode material provided on a thin-film substrate  

DOE Patents (OSTI)

An apparatus and method for treating a cathode material provided on a surface of a continuous thin-film substrate and a treated thin-film cathode having increased smoothness are disclosed. A web of untreated cathode material is moved between a feed mechanism and a take-up mechanism, and passed through a treatment station. The web of cathode material typically includes areas having surface defects, such as prominences extending from the surface of the cathode material. The surface of the cathode material is treated with an abrasive material to reduce the height of the prominences so as to increase an 85 degree gloss value of the cathode material surface by at least approximately 10. The web of cathode material may be subjected to a subsequent abrasive treatment at the same or other treatment station. Burnishing or lapping film is employed at a treatment station to process the cathode material. An abrasive roller may alternatively be used to process the web of cathode material. The apparatus and method of the present invention may also be employed to treat the surface of a lithium anode foil so as to cleanse and reduce the roughness of the anode foil surface.

Hanson, Eric J. (Hudson, WI); Kooyer, Richard L. (Hastings, MN)

2001-01-01T23:59:59.000Z

305

Optical and electrical investigations into cathode ignition and diode closure  

SciTech Connect

The temporal behavior of high-power diodes is closely related to the impedance collapse caused by the movement of the cathode and/or anode plasmas. This impedance collapse can be especially problematic when a constant power electron beam is required. This is the case for the very large area (square meters) diodes used to pump the amplifiers within the Aurora KrF laser system. The electron beam technology development program at Los Alamos utilizes the Electron Beam Test Facility (EGTF) to study diode physics in an attempt to better understand the basic phenomenology of ignition and closure. A combination of optical and electric diagnostics has been fielded on the Electron Beam Test Facility to study ignition and closure in large area electron beam diodes. A four-channel framing camera is used to observe the formation of microplasmas on the surface of the cathode and the subsequent movement of these plasmas toward the anode. Additionally, a perveance model is used to extract information about this plasma from voltage and current profiles. Results from the two diagnostics are compared. Closure velocity measurements are presented showing little dependence on applied magnetic field for both velvet and carbon felt emitters. We also report the first observation of the screening effect in large area cold cathode diodes. 13 refs., 11 figs.

Coogan, J.J.; Rose, E.A.; Shurter, R.P.

1991-01-01T23:59:59.000Z

306

A knife-edge array field emission cathode  

SciTech Connect

many cathode applications require a new type of cathode that is able to produce short pulsed electron beams at high emission current. Gated field emitter arrays of micrometer size are recognized as candidates to meet this need and have become the research focus of vacuum microelectronics. Existing fabrication methods produce emitters that are limited either in frequency response or in current emission. One reason is that the structure of these emitters are not sufficiently optimized. In this study, the author investigated the factors that affect the performance of field emitters. An optimum emitter structure, the knife-edge field emitter array, was developed from the analysis. Large field enhancement factor, large effective emission area, and small emitter capacitance are the advantages of the structure. The author next explored various options of fabricating the knife-edge emitter structure. He proposed a unique thin film process procedure and developed the fabrication techniques to build the emitters on (110) silicon wafers. Data from the initial cathode tests showed very low onset voltages and Fowler-Nordheim type emission. Emission simulation based on the fabricated emitter structure indicated that the knife-edge emitter arrays have the potential to produce high performance in modulation frequency and current emission. Several fabrication issues that await further development are discussed and possible solutions are suggested.

Lee, B.

1994-08-01T23:59:59.000Z

307

Novel Composite Materials for SOFC Cathode-Interconnect Contact  

SciTech Connect

This report summarized the research efforts and major conclusions of our University Coal Research Project, which focused on developing a new class of electrically-conductive, Cr-blocking, damage-tolerant Ag-perovksite composite materials for the cathode-interconnect contact of intermediate-temperature solid oxide fuel cell (SOFC) stacks. The Ag evaporation rate increased linearly with air flow rate initially and became constant for the air flow rate {ge} {approx} 1.0 cm {center_dot} s{sup -1}. An activation energy of 280 KJ.mol{sup -1} was obtained for Ag evaporation in both air and Ar+5%H{sub 2}+3%H{sub 2}O. The exposure environment had no measurable influence on the Ag evaporation rate as well as its dependence on the gas flow rate, while different surface morphological features were developed after thermal exposure in the oxidizing and reducing environments. Pure Ag is too volatile at the SOFC operating temperature and its evaporation rate needs to be reduced to facilitate its application as the cathode-interconnect contact. Based on extensive evaporation testing, it was found that none of the alloying additions reduced the evaporation rate of Ag over the long-term exposure, except the noble metals Au, Pt, and Pd; however, these noble elements are too expensive to justify their practical use in contact materials. Furthermore, the addition of La{sub 0.8}Sr{sub 0.2}MnO{sub 3} (LSM) into Ag to form a composite material also did not significantly modify the Ag evaporation rate. The Ag-perovskite composites with the perovskite being either (La{sub 0.6}Sr{sub 0.4})(Co{sub 0.8}Fe{sub 0.2})O{sub 3} (LSCF) or LSM were systematically evaluated as the contact material between the ferritic interconnect alloy Crofer 22 APU and the LSM cathode. The area specific resistances (ASRs) of the test specimens were shown to be highly dependent on the volume percentage and the type of the perovskite present in the composite contact material as well as the amount of thermal cycling that the specimens were subjected to during testing. The Ag-LSCF composite contact materials proved more effective in trapping Cr within the contact material and preventing Cr migration into the cathode than the Ag-LSM composites. Ag-perovskite composite contact materials are promising candidates for use in intermediate-temperature SOFC stacks with ferritic stainless steel interconnects due to their ability to maintain acceptably low ASRs while reducing Cr migration into the cathode material.

J. H. Zhu

2009-07-31T23:59:59.000Z

308

Vehicle Technologies Office Merit Review 2014: Process Development and Scale-up of Advanced Cathode Materials  

Energy.gov (U.S. Department of Energy (DOE))

Presentation given by [company name] at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about process development and scale...

309

Vehicle Technologies Office Merit Review 2014: Design and Synthesis of Advanced High-Energy Cathode Materials  

Energy.gov (U.S. Department of Energy (DOE))

Presentation given by Lawrence Berkeley National Laboratory at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about the...

310

Studies on High Capacity Cathodes for Advanced Lithium-ion Systems  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

C. Idrobo J. Nanda and V. Cooper, Spring Meeting, American Physical Society, March 02-07, 2014. * Confocal Raman Imaging and Spectroscopy of Energy Storage Materials, J. Nanda, 10...

311

Protein Structures Through use of "Superbends" at the Advance...  

Office of Science (SC) Website

ANL, BNL, LBNL, and SLAC. 2008. "Science and Technology of Future Light Sources: A White Paper." December. Bushnell DA, KD Westover, RE Davis, and RD Kornberg. "Starting the...

312

Development of Polymer Electrolytes for Advanced Lithium Batteries  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

cycle life * Partners: * ANL, ALS (at LBNL) and NCEM (at LBNL) Objectives * A) Develop cost-effective method for creating nanoporous separators. * B) Study the effect of...

313

Large area directly heated lanthanum hexaboride cathode structure having predetermined emission profile  

DOE Patents (OSTI)

A large area directly heated lanthanum hexaboride (LaB.sub.6) cathode system (10) is disclosed. The system comprises a LaB.sub.6 cathode element (11) generally circular in shape about a central axis. The cathode element (11) has a head (21) with an upper substantially planar emission surface (23), and a lower downwardly and an intermediate body portion (26) which diminishes in cross-section from the head (21) towards the base (22) of the cathode element (11). A central rod (14) is connected to the base (22) of the cathode element (11) and extends along the central axis. Plural upstanding spring fingers (37) are urged against an outer peripheral contact surface (24) of the head end (21) to provide a mechanical and electrical connection to the cathode element (11).

Leung, Ka-Ngo (Hercules, CA); Gordon, Keith C. (Berkeley, CA); Kippenham, Dean O. (Castro Valley, CA); Purgalis, Peter (San Francisco, CA); Moussa, David (San Francisco, CA); Williams, Malcom D. (Danville, CA); Wilde, Stephen B. (Pleasant Hill, CA); West, Mark W. (Albany, CA)

1989-01-01T23:59:59.000Z

314

Composite cathode based on yttria stabilized bismuth oxide for low-temperature solid oxide fuel cells  

Science Journals Connector (OSTI)

Composites consisting of silver and yttria stabilized bismuth oxide (YSB) have been investigated as cathodes for low-temperature honeycomb solid oxide fuel cells with stabilized zirconia as electrolytes. At 600?° C the interfacial polarization resistances of a porous YSB–Ag cathode is about 0.3??? cm 2 more than one order of magnitude smaller than those of other reported cathodes on stabilized zirconia. For example the interfacial resistances of a traditional YSZ–lanthanum maganites composite cathode is about 11.4??? cm 2 at 600?° C . Impedance analysis indicated that the performance of an YSB–Ag composite cathode fired at 850?° C for 2 h is severely limited by gas transport due to insufficient porosity. The high performance of the YSB–Ag cathodes is very encouraging for developing honeycomb fuel cells to be operated at temperatures below 600?° C .

Changrong Xia; Yuelan Zhang; Meilin Liu

2003-01-01T23:59:59.000Z

315

Characterization of Atomic and Electronic Structures of Electrochemically Active SOFC Cathode Surfaces  

SciTech Connect

The objective of this project is to gain a fundamental understanding of the oxygen-reduction mechanism on mixed conducting cathode materials by means of quantum-chemical calculations coupled with direct experimental measurements, such as vibrational spectroscopy. We have made progress in the elucidation of the mechanisms of oxygen reduction of perovkite-type cathode materials for SOFCs using these quantum chemical calculations. We established computational framework for predicting properties such as oxygen diffusivity and reaction rate constants for adsorption, incorporation, and TPB reactions, and formulated predictions for LSM- and LSC-based cathode materials. We have also further developed Raman spectroscopy as well as SERS as a characterization tool for SOFC cathode materials. Raman spectroscopy was used to detect chemical changes in the cathode from operation conditions, and SERS was used to probe for pertinent adsorbed species in oxygen reduction. However, much work on the subject of unraveling oxygen reduction for SOFC cathodes remains to be done.

Kevin Blinn; Yongman Choi; Meilin Liu

2009-08-11T23:59:59.000Z

316

Effect of cathode structure on neutron yield performance of a miniature plasma focus device  

Science Journals Connector (OSTI)

In this Letter we report the effect of two different cathode structures – tubular and squirrel cage, on neutron output from a miniature plasma focus device. The squirrel cage cathode is typical of most DPF sources, with an outer, tubular envelope that serves as a vacuum housing, but does not carry current. The tubular cathode carries the return current and also serves as the vacuum envelope, thereby minimizing the size of the DPF head. The maximum average neutron yield of ( 1.82 ± 0.52 ) × 10 5 n / shot for the tubular cathode at 4 mbar was enhanced to ( 1.15 ± 0.2 ) × 10 6 n / shot with squirrel cage cathode at 6 mbar operation. These results are explained on the basis of a current sheath loading/mass choking effect. The penalty for using a non-transparent cathode negates the advantage of the smaller size of the DPF head.

Rishi Verma; R.S. Rawat; P. Lee; S. Lee; S.V. Springham; T.L. Tan; M. Krishnan

2009-01-01T23:59:59.000Z

317

FTIR and Raman Study of the LixTiyMn1-yO2 (y = 0, 0.11) Cathodes in Methylpropyl Pyrrolidinium Bis(fluoro-sulfonyl)imide, LiTFSI Electrolyte  

E-Print Network (OSTI)

response of the cathode active material could be examinedComposite cathodes with active material loading between 8composite cathode, as well as loss of active material and

Hardwick, L.J.

2010-01-01T23:59:59.000Z

318

Advanced Combustion Engine Program 2005 Merit Review and Peer Evaluation Report  

NLE Websites -- All DOE Office Websites (Extended Search)

Less dependence on foreign oil, and eventual transition to an emissions-free, petroleum-free vehicle ADVANCED COMBUSTION ENGINE PROGRAM F r e e d o m C A r A n d V e h i C l e T e C h n o l o g i e s P r o g r A m MERIT REVIEW & PEER EVALUATION REPORT Department of Energy Washington, DC 20585 October 5, 2005 Dear Colleague: This document summarizes the comments provided by the Review Panel for the FY 2005 Department of Energy (DOE) Advanced Combustion Engine R&D Merit Review and Peer Evaluation Meeting, the "ACE Review," held on April 19-21, 2005 at Argonne National Laboratory (ANL). The raw evaluations and comments of the panel were provided (with reviewers' names deleted) to the presenters in early June and were used by national laboratory researchers in the development of Annual Operating Plans (AOPs) for fiscal year (FY) 2006. The panel's

319

STATEMENT OF CONSIDERATIONS REQUEST BY MOTOROLA LABS FOR AN ADVANCE WAIVER OF DOMESTIC AND  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

MOTOROLA LABS FOR AN ADVANCE WAIVER OF DOMESTIC AND MOTOROLA LABS FOR AN ADVANCE WAIVER OF DOMESTIC AND FOREIGN INVENTION RIGHTS UNDER PROPOSED SUBCONTRACT WITH ARGONNE NATIONAL LABORATORY, RFP NO. BAA-N66001-03-X-6010, UNDER M&O CONTRACT W-31-109-ENG-38; W(A)-05-015, CH-1278 The Petitioner, Motorola Labs (Motorola) will be entering into a subcontract with Argonne National Laboratory (ANL) for the performance of work entitled, "Co-integration of Multi- functional Diamond MEMS (Micro-Electro-Mechanical Systems) Technology." The waiver will apply to inventions made by Motorola employees and its subcontractors' employees, regardless of tier, except inventions made by subcontractors eligible to retain title to inventions pursuant to P.L. 96-517, as amended, and National Laboratories. The purpose of the subcontract is to demonstrate the co-integration of a diamond-based

320

Performance and Stability of Barium Strontium Cobaltite Composite Cathodes for SOFC  

E-Print Network (OSTI)

and 50 wt% Ce0.9Gd0.1O2 (CGO) was used as the composite cathode material. Symmetric cells were prepared composite cathode by keeping the samples at 700 °C for 1600 hours. It showed very similar passivation/activation cathode materials than LSM. Studies of the (La,Sr)(Co,Fe)O3 (LSCF) have been one of the most popular

Note: This page contains sample records for the topic "advanced anl cathode" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Methods and apparatuses for making cathodes for high-temperature, rechargeable batteries  

DOE Patents (OSTI)

The approaches for fabricating cathodes can be adapted to improve control over cathode composition and to better accommodate batteries of any shape and their assembly. For example, a first solid having an alkali metal halide, a second solid having a transition metal, and a third solid having an alkali metal aluminum halide are combined into a mixture. The mixture can be heated in a vacuum to a temperature that is greater than or equal to the melting point of the third solid. When the third solid is substantially molten liquid, the mixture is compressed into a desired cathode shape and then cooled to solidify the mixture in the desired cathode shape.

Meinhardt, Kerry D; Sprenkle, Vincent L; Coffey, Gregory W

2014-05-20T23:59:59.000Z

322

Simulations of multipacting in the cathode stalk and FPC of 112 MHz superconducting electron gun  

SciTech Connect

A 112 MHz superconducting quarter-wave resonator electron gun will be used as the injector of the Coherent Electron Cooling (CEC) proof-of-principle experiment at BNL. Furthermore, this electron gun can be used for testing of the performance of various high quantum efficiency photocathodes. In a previous paper, we presented the design of the cathode stalks and a Fundamental Power Coupler (FPC). In this paper we present updated designs of the cathode stalk and FPC. Multipacting in the cathode stalk and FPC was simulated using three different codes. All simulation results show no serious multipacting in the cathode stalk and FPC.

Xin T.; Ben-Zvi, I.; Belomestnykh, S.; Chang, X.; Rao, T.; Skaritka, J.; Wu, Q.; Wang, E.; Liang, X.

2012-05-20T23:59:59.000Z

323

Development of Alternative and Durable High Performance Cathode Supports for PEM Fuel Cells  

Energy.gov (U.S. Department of Energy (DOE))

This presentation, which focuses on cathode supports for PEM fuel cells, was given by Yong Wang of PNNL at a February 2007 meeting on new fuel cell projects.

324

Surface reconstruction and chemical evolution of stoichiometric layered cathode materials for lithium-ion batteries  

E-Print Network (OSTI)

Li-Rich Layered Oxides for Lithium Batteries. Nano Lett. 13,O 2 Cathode Material in Lithium Ion Batteries. Adv. Energysolvent decomposition in lithium ion batteries: first-

Lin, Feng

2014-01-01T23:59:59.000Z

325

A Micro-Scale Model for Oxygen Reduction on LSM-YSZ Cathode  

SciTech Connect

In this study, a micro-scale model is developed to simulate the oxygen reduction on LSM-YSZ composite cathode. The model incorporates the effects of cathode microstructural properties on the local transport phenomena and electrochemistry inside the cathode. A detailed reaction mechanism is used in the model which has two parallel routes for oxygen conversion into oxide ions, namely two-phase boundary and three-phase boundary pathways. The model predicts field distributions of local thermodynamic values, over-potential, Faradaic current and other parameters relevant to cathode performance. Electrochemical impedance simulations are performed using the current model to analyze the contribution of various processes to the overall impedance.

Pakalapati, Suryanarayana Raju; Celik, Ismail; Finklea, Harry; Gong, Mingyang; Liu, Xingbo

2011-05-01T23:59:59.000Z

326

Phosphazene groups modified sulfur composites as active cathode materials for rechargeable lithium/sulfur batteries  

Science Journals Connector (OSTI)

A novel phosphazene groups modified sulfur composites cathode [triphosphazene sulfide composite (PS) or nitroaniline–triphosphazene disulfide composite (NPS)] which can give good affinity with electrolytes was...

J. D. Liu; S. Q. Zhang; S. B. Yang; Z. F. Shi; S. T. Zhang; L. K. Wu

2013-11-01T23:59:59.000Z

327

Charge–discharge characteristics of polythiopheneas a cathode active material in a rechargeable battery  

Science Journals Connector (OSTI)

Polythiophene films were electrochemically deposited on glassy carbon substrates under potentiostatic control and used as cathode active material together with a Zn anode in a...

G. C´iric´-Marjanovic´; S. Mentus

1998-01-01T23:59:59.000Z

328

Development of High Energy Cathode for Li-ion Batteries | Department...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

es056zhang2010p.pdf More Documents & Publications Phase Behavior and Solid State Chemistry in Olivines Development of High Energy Cathode Materials Interfacial Processes -...

329

Superior Long-Term Energy Retention and Volumetric Energy Density for Li-Rich Cathode Materials  

Science Journals Connector (OSTI)

Superior Long-Term Energy Retention and Volumetric Energy Density for Li-Rich Cathode Materials ... †Department of Energy Engineering, School of

Pilgun Oh; Seungjun Myeong; Woongrae Cho; Min-Joon Lee; Minseong Ko; Hu Young Jeong; Jaephil Cho

2014-09-02T23:59:59.000Z

330

Advanced Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Advanced Systems: Advanced Systems: high Performance fenestration systems Research areas: Research activities to improve the performance of windows and other fenestration products must address window systems issues as well as Glazing Materials research. LBNL activities in the area of Advanced Systems include research at both the product level and the building envelope and building systems levels. Highly insulating windows - using non structural center layers Lower cost solutions to more insulating three layer glazing systems, with the potential to turn windows in U.S. heating dominated residential applications into net-energy gainers. Highly Insulating Window Frames In collaboration with the Norwegian University of Science and Technology, we are researching the potentials for highly insulating window frames. Our initial work examines European frames with reported U-factors under 0.15 Btu/hr-ft2-F. Future research aims to analyze these designs, verify these performance levels and ensure that procedures used to calculate frame performance are accurate.

331

Electrocatalysis of anodic and cathodic oxygen-transfer reactions  

SciTech Connect

The electrocatalysis of oxygen-transfer reactions is discussed in two parts. In Part I, the reduction of iodate (IO{sub 3}{sup {minus}}) is examined as an example of cathodic oxygen transfer. On oxide-covered Pt electrodes (PtO), a large cathodic current is observed in the presence of IO{sub 3}{sup {minus}} to coincide with the reduction of PtO. The total cathodic charge exceeds the amount required for reduction of PtO and IO{sub 3}{sup {minus}} to produce an adsorbed product. An electrocatalytic link between reduction of IO{sub 3}{sup {minus}} and reduction of PtO is indicated. In addition, on oxide-free Pt electrodes, the reduction of IO{sub 3}{sup {minus}} is determined to be sensitive to surface treatment. The electrocatalytic oxidation of CN{sup {minus}} is presented as an example of anodic oxygen transfer in Part II. The voltametric response of CN{sup {minus}} is virtually nonexistent at PbO{sub 2} electrodes. The response is significantly improved by doping PbO{sub 2} with Cu. Cyanide is also oxidized effectively at CuO-film electrodes. Copper is concluded to serve as an adsorption site for CN{sup {minus}}. It is proposed that an oxygen tunneling mechanism comparable to electron tunneling does not occur at the electrode-solution interface. The adsorption of CN{sup {minus}} is therefore considered to be a necessary prerequisite for oxygen transfer. 201 refs., 23 figs., 2 tabs.

Wels, B.R.

1990-09-21T23:59:59.000Z

332

Miniature quadrupole mass spectrometer having a cold cathode ionization source  

DOE Patents (OSTI)

An improved quadrupole mass spectrometer is described. The improvement lies in the substitution of the conventional hot filament electron source with a cold cathode field emitter array which in turn allows operating a small QMS at much high internal pressures then are currently achievable. By eliminating of the hot filament such problems as thermally "cracking" delicate analyte molecules, outgassing a "hot" filament, high power requirements, filament contamination by outgas species, and spurious em fields are avoid all together. In addition, the ability of produce FEAs using well-known and well developed photolithographic techniques, permits building a QMS having multiple redundancies of the ionization source at very low additional cost.

Felter, Thomas E. (Livermore, CA)

2002-01-01T23:59:59.000Z

333

Environmental Assessment and (FONSI) Of The Proposed 7-GeV Advanced Photon Source  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

and (FONSI) OF THE PROPOSED and (FONSI) OF THE PROPOSED 7-GeV ADVANCED PHOTON SOURCE Table of Contents LIST OF ABBREVIATIONS AND ACRONYMS ABSTRACT 1.0 INTRODUCTION 1.1 PURPOSE 1.2 THE APS PROJECT AT ANL 1.3 SUMMARY OF THE PROPOSED ACTION 1.4 NEED FOR ACTION 2.0 THE PROPOSED ACTION AND ALTERNATIVES 2.1 DESCRIPTION OF APS AND CONSTRUCTION ACTIVITIES (PROPOSED ACTION) 2.1.1 APS Facility Description 2.1.2 Utility Services 2.1.3 Gaseous Emissions, Liquid Effluents, and Wastes 2.1.4 Construction Activities 2.1.5 Decommissioning 2.2 ALTERNATIVES 2.2.1 No Action 2.2.2 Construction at Another ANL Site 3.0 THE AFFECTED ENVIRONMENT 3.1 SITE DESCRIPTION 3.2 CLIMATOLOGY AND AIR QUALITY 3.2.1 Climatology 3.2.2 Air Quality 3.3 DEMOGRAPHY AND SOCIOECONOMIC PROFILE 3.4 LAND USE 3.4.1 Site and Vicinity

334

STATEMENT OF CONSIDERATIONS REQUEST BY OSRAM SYLVANIA PRODUCTS, INC. FOR AN ADVANCE  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

OSRAM SYLVANIA PRODUCTS, INC. FOR AN ADVANCE OSRAM SYLVANIA PRODUCTS, INC. FOR AN ADVANCE WAIVER OF DOMESTIC AND FOREIGN PATENT RIGHTS UNDER DOE GRANT NO. DE-FG36-05GO85042 ENTITLED "TUNGSTEN CATHODE FUEL CELL CATALYST PROJECT"; W(A)-05-031; CH-1300 As set out in the attached waiver petitioner, the Petitioner, OSRAM SYLVANIA Products, Inc., has requested an advance waiver of domestic and foreign patent rights for all subject inventions made by its employees under the above-identified award. Referring to item 2 of the waiver petition, the purpose of this award relates generally to fuel cells and specifically to the design, fabrication and evaluation of the cathodic, catalytic activity of a tungsten-based (platinum-free) material in a prototype membrane electrode assembly at 1 / 1 5 t h the output of a comparable platinum containing unit to

335

Plasma parameters of an active cathode during relativistic magnetron operation  

SciTech Connect

The results of time- and space-resolved spectroscopic studies of the plasma produced at the surface of the ferroelectric cathode during the operation of an S-band relativistic magnetron generating approx50 MW microwave power at f=3005 MHz and powered by a linear induction accelerator (LIA) (150 kV, 1.5 kA, 250 ns) are presented. The surface plasma was produced by a driving pulse (3 kV, 150 ns) prior to the application of the LIA accelerating high-voltage pulse. The cathode plasma electron density and temperature were obtained by analyzing hydrogen H{sub a}lpha and H{sub b}eta, and carbon ions CII and CIII spectral lines, and using the results of nonstationary collision radiative modeling. It was shown that the microwave generation causes an increase in plasma ion and electron temperature up to approx4 and approx7 eV, respectively, and the plasma density increases up to approx7x10{sup 14} cm{sup -3}. Estimates of the plasma transport parameters and its interaction with microwave radiation are also discussed.

Hadas, Y.; Kweller, T.; Sayapin, A.; Krasik, Ya. E. [Department of Physics, Technion, Haifa 32000 (Israel); Bernshtam, V. [Department of Physics, Weizmann Institute of Sciences, 61000 Rehovot (Israel)

2009-09-15T23:59:59.000Z

336

Degradation of Ionic Pathway in PEM Fuel Cell Cathode  

SciTech Connect

The degradation of the ionic pathway throughout the catalyst layer in proton exchange membrane fuel cells was studied under an accelerated stress test of catalyst support (potential hold at 1.2 V). Electrochemical behaviors of the cathode based on graphitic mesoporous carbon supported Pt catalyst were examined using electrochemical impedance spectroscopy and cyclic voltammetry. Impedance data were plotted and expressed in the complex capacitance form to determine useful parameters in the transmission line model: the double-layer capacitance, peak frequency, and ionic resistance. Electrochemical surface area and hydrogen crossover current through the membrane were estimated from cyclic voltammogram, while cathode Faradaic resistance was compared with ionic resistance as a function of test time. It was observed that during an accelerated stress test of catalyst support, graphitic mesoporous carbon becomes hydrophilic which increases interfacial area between the ionomer and the catalyst up to 100 h. However, the ionic resistance in the catalyst layer drastically increases after 100 h with further carbon support oxidation. The underlying mechanism has been studied and it was found that significant degradation of ionic pathway throughout the catalyst layer due to catalyst support corrosion induces uneven hydration and mechanical stress in the ionomer.

Park, Seh Kyu; Shao, Yuyan; Wan, Haiying; Viswanathan, Vilayanur V.; Towne, Silas A.; Rieke, Peter C.; Liu, Jun; Wang, Yong

2011-11-12T23:59:59.000Z

337

Reprint of "Studies of local degradation phenomena in composite cathodes  

NLE Websites -- All DOE Office Websites (Extended Search)

Reprint of "Studies of local degradation phenomena in composite cathodes Reprint of "Studies of local degradation phenomena in composite cathodes for lithium-ion batteries" Title Reprint of "Studies of local degradation phenomena in composite cathodes for lithium-ion batteries" Publication Type Journal Article Year of Publication 2007 Authors Kerlau, Marie, Marek Marcinek, Venkat Srinivasan, and Robert Kostecki Journal Electrochimica Acta Volume 53 Pagination 1385-1392 Keywords cathode, degradation, li-ion battery, raman microscopy Abstract LiNi0.8Co0.15Al0.05O2 and LiNi1/3Co1/3Mn1/3O2 composite cathodes were cycled in model cells to study interfacial phenomena that could lead to electrode degradation. Ex situ spectroscopic analysis of the tested cathodes, which suffered substantial power and capacity loss, showed that the state of charge (SOC) of oxide particles on the cathode surface was highly non-uniform despite the deep discharge of the Li-ion cell at the end of the test. The inconsistent kinetic behavior of individual oxide particles was attributed to the degradation of electronic pathways within the composite cathodes. A simple theoretical model based on a distributed network showed that an increase of the contact resistance between composite electrode particles may be responsible for non-uniform local kinetic behavior of individual oxide particles and the overall degradation of electrochemical performance of composite electrodes.

338

Two-phase flow and transport in the air cathode of proton exchange membrane fuel cells  

SciTech Connect

Two-phase flow and transport of reactants and products in the air cathode of proton exchange membrane (PEM) fuel cells is studied analytically and numerically. Four regimes of water distribution and transport are classified by defining three threshold current densities and a maximum current density. They correspond to first appearance of liquid water at the membrane/cathode interface, extension of the gas-liquid two-phase zone to the cathode/channel interface, saturated moist air exiting the gas channel, and complete consumption of oxygen by the electrochemical reaction. When the cell operates above the first threshold current density, liquid water appears and a two-phase zone forms within the porous cathode. A two-phase, multi-component mixture model in conjunction with a finite-volume-based computational fluid dynamics (CFD) technique is applied to simulate the cathode operation in this regime. The model is able to handle the situation where a single-phase region co-exists with a two-phase zone in the air cathode. For the first time, the polarization curve as well as water and oxygen concentration distributions encompassing both single- and two-phase regimes of the air cathode are presented. Capillary action is found to be the dominant mechanism for water transport inside the two-phase zone. The liquid water saturation within the cathode is predicted to reach 6.3% at 1.4 A/cm{sup 2}.

WANG,Z.H.; WANG,C.Y.; CHEN,KEN S.

2000-03-20T23:59:59.000Z

339

Low Loading Pt Cathode Catalysts for Direct Methanol Fuel Cell Derived from the Particle Size Effect  

Science Journals Connector (OSTI)

Recent results have shown that with sputtered Pt cathode catalysts, the metal loading in PEMFC can be reduced to cathode metal loading in PEMFC, less attention has been paid to DMFC. ... The long-term performance of catalyst Pt14-050 in DMFC was examined to explore the stability of the small-sized Pt catalysts. ...

Fei Wen; Ulrich Simon

2007-06-16T23:59:59.000Z

340

Effect of A-site Non-stoichiometry on LSCF Cathodes  

SciTech Connect

LSCF Cathodes were explored when effected with A-site non-stoichiometry. At 700-800 C, the operating temperatures of intermediate temperature (IT-) SOFCs have enabled the use of stainless steels in the SOFC framework and current collectors, allowing significant reductions in cost. However, the lower operating temperatures of IT-SOFC's also result in significant decreases in power densities of cells with LSM cathodes due to their high activation energies. LSCF is a mixed ionic electronic conducting perovskite that exhibits higher performance than LSM/YSZ composites and shows potential as a replacement cathode. This study investigates the effect of A-site stoichiometry on the performance of LSCF cathodes. Cell tests showed that A-site and Sr-deficient LSCF cathodes consistently outperformed stoichiometric LSCF cathodes, exhibiting up to 10% higher cell power densities. It was also observed that all stoichiometric, A-site, and Sr-deficient LSCF cathodes degraded over time at similar rates. Contributions of ohmic and electrode polarization losses to cell degradation rates were similar regardless of cathode composition.

Templeton, Jared W.; Lu, Zigui; Stevenson, Jeffry W.; Hardy, John S.

2011-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "advanced anl cathode" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Mesoporous composite cathode materials prepared from inverse micelle structures for high  

E-Print Network (OSTI)

active materials in LIBs. Manganese oxide-based compounds are particularly attrac- tive as cathodes owingMesoporous composite cathode materials prepared from inverse micelle structures for highCoO2) is the most common active material.1 However, since natural deposits of cobalt are scarce

Cao, Guozhong

342

Enhanced Activated Carbon Cathode Performance for Microbial Fuel Cell by Blending Carbon Black  

E-Print Network (OSTI)

Enhanced Activated Carbon Cathode Performance for Microbial Fuel Cell by Blending Carbon Black-based materials that have good catalytic activity, but the electrical conductivity of the AC is poor compared as a binder, as opposed to Nafion with Pt, which greatly reduces the cost of the cathode materials. AC

343

Calculations of Oxygen Stability in Lithium-Rich Layered Cathodes Penghao Xiao,  

E-Print Network (OSTI)

Calculations of Oxygen Stability in Lithium-Rich Layered Cathodes Penghao Xiao, Z. Q. Deng, A ABSTRACT: Oxygen loss can lead to high-capacity Li2MnO3-based lithium- rich layered cathodes. Substitution The stabilized compounds have a similar structure as LiMO2 except that excess Li populates the transition

Henkelman, Graeme

344

What performance would non-Pt cathode catalysts need to achieve  

E-Print Network (OSTI)

require development of x2 more active cathode catalyst MEA/DM optimization required but less criticalWhat performance would non-Pt cathode catalysts need to achieve to be practical Motors Fuel Cell Activities Honeoye Falls, NY DOE Workshop on Non-Platinum Electrocatalysts 21

345

The use and optimization of stainless steel mesh cathodes in microbial electrolysis cells  

E-Print Network (OSTI)

for water electrolysis) [1,2], hydrogen can be evolved on the cathode under anoxic conditions, usually for the hydrogen evolution reaction (HER) in water electrolysis [13,14]. Hu et al. * Corresponding author. Tel.: þ1The use and optimization of stainless steel mesh cathodes in microbial electrolysis cells Yimin

346

Evaluation of the relationship between cathode microstructure and electrochemical behavior for SOFCs  

E-Print Network (OSTI)

an actual cathode and the polarization resistance of the signi cant elementary steps of the cathodic transfer resistance and oxygen adsorption. A direct relationship between microstructural parameters from resistance and the adsorption polarization resistance display a power law relationship with LTPB and pore

Florida, University of

347

RF Plasma Cathode-Neutralizer for Space Applications IEPC-2007-266  

E-Print Network (OSTI)

Raitses and Nathaniel J. Fisch Princeton Plasma Physics Laboratory, Princeton, NJ 08543, USA AbstractRF Plasma Cathode-Neutralizer for Space Applications IEPC-2007-266 Presented at the 30th: A new plasma cathode-neutralizer based on electron extraction from inductively coupled plasma (ICP

348

Advanced Search  

NLE Websites -- All DOE Office Websites (Extended Search)

Publications Publications Advanced Search Most publications by Environmental Energy Technologies Division authors are searchable from this page, including peer-reviewed publications, book chapters, conference proceedings and LBNL reports. Filter Advanced Search Publications list This publications database is an ongoing project, and not all Division publications are represented here yet. For additional help see the bottom of this page. Documents Found: 4418 Title Keyword LBNL Number Author - Any - Abadie, Marc O Abbey, Chad Abdolrazaghi, Mohamad Aberg, Annika Abhyankar, Nikit Abraham, Marvin M Abshire, James B Abushakra, Bass Acevedo-Ruiz, Manuel Aceves, Salvador Ache, Hans J Ackerly, David D Ackerman, Andrew S Adamkiewicz, Gary Adams, J W Adams, Carl Adamson, Bo Addy, Nathan Addy, Susan E Aden, Nathaniel T Adesola, Bunmi Adhikari,

349

Advanced Combustion  

NLE Websites -- All DOE Office Websites (Extended Search)

Systems Systems Advanced Combustion Background Conventional coal-fired power plants utilize steam turbines to generate electricity, which operate at efficiencies of 35-37 percent. Operation at higher temperatures and pressures can lead to higher efficiencies, resulting in reduced fuel consumption and lower greenhouse gas emissions. Higher efficiency also reduces CO2 production for the same amount of energy produced, thereby facilitating a reduction in greenhouse gas emissions. When combined, oxy-combustion comes with an efficiency hit, so it will actually increase the amount of CO2 to be captured. But without so much N2 in the flue gas, it will be easier and perhaps more efficient to capture, utilize and sequester. NETL's Advanced Combustion Project and members of the NETL-Regional University

350

Composition-Tailored Synthesis of Gradient Transition Metal Precursor Particles for Lithium-Ion Battery Cathode Materials  

Science Journals Connector (OSTI)

Composition-Tailored Synthesis of Gradient Transition Metal Precursor Particles for Lithium-Ion Battery Cathode Materials ... Collected particles were lithiated, and one promising material was evaluated as the active cathode component in a lithium-ion battery. ...

Gary M. Koenig, Jr.; Ilias Belharouak; Haixai Deng; Yang-Kook Sun; Khalil Amine

2011-03-09T23:59:59.000Z

351

July2006ANL40.ppt  

NLE Websites -- All DOE Office Websites (Extended Search)

hiearchically connected functional scales function means dynamics Multiscale Materials (Micro-Meso-Macro) * "systems" * "engines" * "networks" * coupled spacetime *...

352

ANL/APS/TB-13  

NLE Websites -- All DOE Office Websites (Extended Search)

EDM work on a single piece. Less labor and may be cheaper. The work is not cheaper than EDM work, and the solution is not reliable. 2 Flange end can be brazed to a shorter neck...

353

ANL-FF-262i  

Office of Legacy Management (LM)

from our foundry's graphite-melted uranium is remote because of the metalIs high carbon content. High purity metal isto be considered a possible solution of many of the...

354

Vacuum encapsulated hermetically sealed diamond amplified cathode capsule and method for making same  

DOE Patents (OSTI)

A vacuum encapsulated, hermetically sealed cathode capsule for generating an electron beam of secondary electrons, which generally includes a cathode element having a primary emission surface adapted to emit primary electrons, an annular insulating spacer, a diamond window element comprising a diamond material and having a secondary emission surface adapted to emit secondary electrons in response to primary electrons impinging on the diamond window element, a first cold-weld ring disposed between the cathode element and the annular insulating spacer and a second cold-weld ring disposed between the annular insulating spacer and the diamond window element. The cathode capsule is formed by a vacuum cold-weld process such that the first cold-weld ring forms a hermetical seal between the cathode element and the annular insulating spacer and the second cold-weld ring forms a hermetical seal between the annular spacer and the diamond window element whereby a vacuum encapsulated chamber is formed within the capsule.

Rao, Triveni; Walsh, John; Gangone, Elizabeth

2014-12-30T23:59:59.000Z

355

Impact of active material surface area on thermal stability of LiCoO2 cathode  

Science Journals Connector (OSTI)

Abstract Thermal stability of charged LiCoO2 cathodes with various surface areas of active material is investigated in order to quantify the effect of LiCoO2 surface area on thermal stability of cathode. Thermogravimetric analyses and calorimetry have been conducted on charged cathodes with different active material surface areas. Besides reduced thermal stability, high surface area also changes the active material decomposition reaction and induces side reactions with additives. Thermal analyses of LiCoO2 delithiated chemically without any additives or with a single additive have been conducted to elaborate the effect of particle size on side reactions. Stability of cathode–electrolyte system has been investigated by accelerating rate calorimetry (ARC). Arrhenius activation energy of cathode decomposition has been calculated as function of conversion at different surface area of active material.

Jan Geder; Harry E. Hoster; Andreas Jossen; Jürgen Garche; Denis Y.W. Yu

2014-01-01T23:59:59.000Z

356

Advanced Electrodes for Solid Acid Fuel Cells by Platinum Deposition on CsH2PO4  

Science Journals Connector (OSTI)

Advanced Electrodes for Solid Acid Fuel Cells by Platinum Deposition on CsH2PO4 ... The unique characteristics of the CDP electrolyte pose several challenges to SAFC optimization, particularly in the area of cathode microstructure. ... 1% CO demonstrates the potential of this approach with optimized reforming catalysts and also the tolerance to CO poisoning at these elevated temps. ...

Alexander B. Papandrew; Calum R.I. Chisholm; Ramez A. Elgammal; Mustafa M. Özer; Strahinja K. Zecevic

2011-03-15T23:59:59.000Z

357

Nanosegregated Cathode Catalysts with Ultra-Low Platinum Loading - DOE Hydrogen and Fuel Cells Program FY 2012 Annual Progress Report  

NLE Websites -- All DOE Office Websites (Extended Search)

1 1 FY 2012 Annual Progress Report DOE Hydrogen and Fuel Cells Program Nenad M. Markovic (Primary Contact) and Vojislav R. Stamenkovic Argonne National Laboratory (ANL) Argonne, IL 60439 Phone: (630) 252-5181 Email: nmmarkovic@anl.gov DOE Manager HQ: Nancy Garland Phone: (202) 586-5673 Email: Nancy.Garland@ee.doe.gov Subcontractors: * Karren More, Oak Ridge National Laboratory, Oak Ridge, TN * Charles Hays, Jet Propulsion Laboratory, Pasadena, CA * Shuoheng Sun, Brown University, Providence, RI * Guofeng Wang, University of Pittsburgh, Pittsburgh, PA * Radoslav Atanasoski, 3M Company, Saint Paul, MN

358

A Steady-State Impedance Model for a PEMFC Cathode Qingzhi Guo* and Ralph E. White**,z  

E-Print Network (OSTI)

electrolyte membrane fuel cell PEMFC cathode is presented. The catalyst layer of the electrode is assumedA Steady-State Impedance Model for a PEMFC Cathode Qingzhi Guo* and Ralph E. White**,z Center in an air/H2 PEMFC.1 Two common models are available in the literature for the study of a PEMFC air cathode

359

Design and Evaluation of Novel High Capacity Cathode Materials...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

processing routes to prepare advanced electrodes with new architectural designs Use atomic-scale modeling as a guide to identify, design and understand the structural...

360

Advanced Research  

NLE Websites -- All DOE Office Websites (Extended Search)

Ductility EnhancEmEnt of molybDEnum Ductility EnhancEmEnt of molybDEnum PhasE by nano-sizED oxiDE DisPErsions Description Using computational modeling techniques, this research aims to develop predictive capabilities to facilitate the design and optimization of molybdenum (Mo), chromium (Cr), and other high-temperature structural materials to enable these materials to withstand the harsh environments of advanced power generation systems, such as gasification-based systems. These types of materials are essential to the development of highly efficient, clean energy technologies such as low-emission power systems that use coal or other fossil fuels.

Note: This page contains sample records for the topic "advanced anl cathode" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Mission Advancing  

NLE Websites -- All DOE Office Websites (Extended Search)

NETL Accomplishments NETL Accomplishments - the lab 2 Mission Advancing energy options to fuel our economy, strengthen our security, and improve our environment. Renewed Prosperity Through Technological Innovation - Letter from the Director NETL: the ENERGY lab 4 6 3 Contents Technology Transfer Patents and Commercialization Sharing Our Expertise Noteworthy Publications 60 62 63 64 66 Environment, Economy, & Supply Carbon Capture and Storage Partnerships Work to Reduce Atmospheric CO 2 Demand-Side Efficiencies New NETL Facility Showcases Green Technologies Environment & Economy Materials Mercury Membranes NETL Education Program Produces Significant Achievement Monitoring Water Economy & Supply NETL's Natural Gas Prediction Tool Aids Hurricane Recovery Energy Infrastructure

362

Cathodic protection deployment on space shuttle solid rocket boosters  

SciTech Connect

Corrosion protection of the space shuttle solid rocket boosters incorporates the use of cathodic protection (anodes) in concert with several coatings systems. The SRB design has large carbon/carbon composite (motor nozzle) electrically connected to an aluminum alloy structure. Early in the STS program, the aluminum structures incurred tremendous corrosive attack at coating damage locations due primarily to galvanic coupling with the carbon/carbon nozzle. Also contributing to the galvanic corrosion problem were stainless steel and titanium alloy components housed within the aluminum structures and electrically connected to the aluminum structures. This paper highlights the evolution in the protection of the aluminum structures, providing historical information and summary data from the operation of the corrosion protection systems. Also, data and information are included regarding the evaluation and application of inorganic zinc rich primers to provide anode area on the aluminum structures.

Zook, L.M.

1999-07-01T23:59:59.000Z

363

Advanced Vehicle Testing & Evaluation  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Provide benchmark data for advanced technology vehicles Develop lifecycle cost data for production vehicles utilizing advanced power trains Provide fleet...

364

Advanced LIGO  

E-Print Network (OSTI)

The Advanced LIGO gravitational wave detectors are second generation instruments designed and built for the two LIGO observatories in Hanford, WA and Livingston, LA. The two instruments are identical in design, and are specialized versions of a Michelson interferometer with 4 km long arms. As in initial LIGO, Fabry-Perot cavities are used in the arms to increase the interaction time with a gravitational wave, and power recycling is used to increase the effective laser power. Signal recycling has been added in Advanced LIGO to improve the frequency response. In the most sensitive frequency region around 100 Hz, the design strain sensitivity is a factor of 10 better than initial LIGO. In addition, the low frequency end of the sensitivity band is moved from 40 Hz down to 10 Hz. All interferometer components have been replaced with improved technologies to achieve this sensitivity gain. Much better seismic isolation and test mass suspensions are responsible for the gains at lower frequencies. Higher laser power, larger test masses and improved mirror coatings lead to the improved sensitivity at mid- and high- frequencies. Data collecting runs with these new instruments are planned to begin in mid-2015.

The LIGO Scientific Collaboration

2014-11-17T23:59:59.000Z

365

Thermal and electrochemical properties of PEO-LiTFSI-Pyr14TFSI-based composite cathodes, incorporating 4 V-class cathode active materials  

Science Journals Connector (OSTI)

Abstract Poly(ethylene oxide)-lithium bis(trifluoromethanesulfonyl)imide N-butyl-N-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide (PEO-LiTFSI-Pyr14TFSI)-based 4 V-class composite cathodes, incorporating either Li(Ni1/3Co1/3Mn1/3)O2 or Li(Ni0.8Co0.15Al0.05)O2 were prepared by a hot-pressing process and successively investigated in terms of their morphological, thermal, and electrochemical properties. Thereby, excellent mechanical and thermal properties could be demonstrated for all composite cathodes. The electrochemical performance of truly dry all-solid-state Li/P(EO)10LiTFSI-(Pyr14TFSI)2/composite cathode batteries at temperatures as low as 40 °C revealed high delivered capacities. However, in comparison with LiFePO4, the 4 V-class composite cathodes also indicated much lower capacity retention. In-depth investigations on the interfacial properties of Li(Ni0.8Co0.15Al0.05)O2 composite cathodes revealed a strong dependence on the anodic cut-off potential and the presence of current flow through the cell, whereby different degradation mechanisms could be characterized upon cycling, according to which the finite growth of a surface films at both electrode/polymer electrolyte interfaces inhibited continuous decomposition of the polymer electrolyte even at potentials as high as 4.3 V. Moreover, the presence of Pyr14TFSI in the 4 V-class composite cathodes sustainably reduced the cathode interfacial resistance and presumably diminished the corrosion of the aluminum current collector.

Morten Wetjen; Guk-Tae Kim; Mario Joost; Giovanni B. Appetecchi; Martin Winter; Stefano Passerini

2014-01-01T23:59:59.000Z

366

Final Report on "Development and Testing of Advanced Accelerator Structures and Technologies at 11.424 GHz"  

SciTech Connect

This is the final report on the research program ?Development and Testing of Advanced Accelerator Structures and Technologies at 11.424 GHz,? which was carried out by the Naval Research Laboratory (NRL) under Interagency Agreement DE?AI02?01ER41170 with the Department of Energy. The period covered by this report is 15 July 2010 ? 14 July 2013. The program included two principal tasks. Task 1 involved a study of the key physics issues related to the use of high gradient dielectric-loaded accelerating (DLA) structures in rf linear accelerators and was carried out in collaboration with Argonne National Laboratory (ANL) and Euclid Techlabs LLC. Task 2 involved a study of high power active microwave pulse compressors and was carried out in collaboration with Omega-P, Inc. and the Institute of Applied Physics of the Russian Academy of Sciences in Nizhny Novgorod. The studies under Task 1 were focused on rf-induced multipactor and breakdown in externally driven DLA structures at the 200-ns timescale. Suppression of multipactor and breakdown are essential to the practical application of dielectric structures in rf linear accelerators. The structures that were studied were developed by ANL and Euclid Techlabs and their performance was evaluated at high power in the X-band Magnicon Laboratory at NRL. Three structures were designed, fabricated, and tested, and the results analyzed in the first two years of the program: a clamped quartz traveling-wave (TW) structure, a externally copper-coated TW structure, and an externally copper-coated dielectric standing-wave (SW) structure. These structures showed that rf breakdown could be largely eliminated by eliminating dielectric joints in the structures, but that the multipactor loading was omnipresent. In the third year of the program, the focus of the program was on multipactor suppression using a strong applied axial magnetic field, as proposed by Chang et al. [C. Chang et al., J. Appl. Phys. 110, 063304 (2011).], and a successful experiment was carried out that demonstrated suppression of multipactor in the uniform-field region of a TW DLA structure. However, in accordance with theory, the multipactor was enhanced in regions of the structure with lower values of axial magnetic field. Under Task 2, there were two two-month experimental runs at NRL that were used to characterize the performance of high power two-channel dual-mode active microwave pulse compressor configurations that used electron-beam triggered switch cavities. The pulse compressors were designed and fabricated by Omega-P, Inc. and the Russian Institute of Applied Physics and tested in the Magnicon Laboratory at NRL. These pulse compressors made use of an electron beam discharge from a cylindrical knife-edged Mo cathode coated with a CVD diamond film that was driven by a ?100 kV, 100 ns high voltage pulse. The electron beam was used to change the resonant frequency of the switch cavities in order to create the output microwave pulse. The compressor channels included a TE01 input and output section and a TE02 energy storage cavity, followed by a switch assembly that controlled the coupling between the TE01 and TE02 modes. In the initial state, the switch cavity was in resonance, the reflection from the cavity was out of phase, and the mode conversion was only ~2-3%, allowing the energy storage cavity to fill. When the electron beam was discharged into the switch cavity, the cavity was shifted out of resonance, causing the phase of the reflection to change by ~?. As a result of the change in the reflection phase, the mode coupling in the conical taper was greatly increased, and could approach ~100%, permitting the energy storage cavity to empty in one cavity round trip time of the TE02 mode to produce a high power output pulse. The second experiment runs demonstrated a 190 MW, ~20 ns compressed pulse at 25.7 gain and ~50% efficiency, using a 7.4 MW, 1 ?s drive pulse from the magnicon. The success of this experiment suggests a path to future high gain active versions of the SLED 2 pulse compressor at SLAC.

Gold, Steven H. [Naval Research Laboratory

2013-10-13T23:59:59.000Z

367

Characterization of Cathode Materials for Rechargeable Lithium Batteries using Synchrotron Based In Situ X-ray Techniques  

SciTech Connect

The emergence of portable telecommunication, computer equipment and ultimately hybrid electric vehicles has created a substantial interest in manufacturing rechargeable batteries that are less expensive, non-toxic, operate for longer time, small in size and weigh less. Li-ion batteries are taking an increasing share of the rechargeable battery market. The present commercial battery is based on a layered LiCoO{sub 2} cathode and a graphitized carbon anode. LiCoO{sub 2} is expensive but it has the advantage being easily manufactured in a reproducible manner. Other low cost layered compounds such as LiNiO{sub 2}, LiNi{sub 0.85}Co{sub 0.15}O{sub 2} or cubic spinels such as LiMn{sub 2}O{sub 4} have been considered. However, these suffer from cycle life and thermal stability problems. Recently, some battery companies have demonstrated a new concept of mixing two different types of insertion compounds to make a composite cathode, aimed at reducing cost and improving self-discharge. Reports clearly showed that this blending technique can prevent the decline in ·capacity caused by cycling or storage at elevated temperatures. However, not much work has been reported on the charge-discharge characteristics and phase transitions for these composite cathodes. Understanding the structure and structural changes of electrode materials during the electrochemical cycling is the key to develop better .lithium ion batteries. The successful commercialization of the· lithium-ion battery is mainly built on the advances in solid state chemistry of the intercalation compounds. Most of the progress in understanding the lithium ion battery materials has been obtained from x-ray diffraction studies. Up to now, most XRD studies on lithium-ion battery materials have been done ex situ. Although these ex situ XRD studies have provided important information· about the structures of battery materials, they do face three major problems. First of all, the pre-selected charge (discharge) states may not be representative for the full picture of the structural changes during charge (discharge). In other words, the important information might be missed for those charge (discharge) states which were not selected for ex situ XRD studies. Secondly, the structure of the sample may have changed after removed from the cell. Finally, it is impossible to use the ex situ XRD to study the dynamic effects during high rate charge-discharge, which is crucial for the application of lithium-ion batteries for electric vehicle. A few in situ studies have been done using conventional x-ray tube sources. All of the in situ XRD studies using conventional x-ray tube sources have been done in the reflection mode in cells with beryllium windows. Because of the weak signals, data collection takes a long time, often several hundred hours for a single charge-discharge cycle. This long time data collection is not suitable for dynamic studies at all. Furthermore, in the reflection mode, the x-ray beam probes mainly the surface layer of the cathode materials. Iri collaboration with LG Chemical Ltd., BNL group designed and constructed the cells for in situ studies. LG Chemical provided several blended samples and pouch cells to BNL for preliminary in situ study. The LG Chemical provided help on integrate the blended cathode into these cells. The BNL team carried out in situ XAS and XRD studies on the samples and pouch cells provided by LG Chemical under normal charge-discharge conditions at elevated temperature.

Yang, Xiao-Qing

2007-05-23T23:59:59.000Z

368

On-Axis Brilliance and Power of In-Vacuum Undulators for The Advanced Photon Source  

NLE Websites -- All DOE Office Websites (Extended Search)

4 4 On-Axis Brilliance and Power of In-Vacuum Undulators for the Advanced Photon Source (formerly MD-TN-2009-004) R. Dejus, M. Jaski, and S.H. Kim - MD Group/ASD Rev. 1, November 25, 2009: Updated the fitted B eff in Tables 1 - 3, and 5 to use two decimals in the fitted equation. Explained chosen gaps. Added clarifications in the text and added additional references. Edited by C. Eyberger for release as cleared document ANL/APS/LS-314; updated in ICMS. Rev. 0a, June 17, 2009: ICMS Initial Release (minor clarifications and corrections of typographical errors, added footnote "d" to Table 4). Rev. 0, June 16, 2009: First Release as Technical Note MD-TN-2009-004. Table of Contents Introduction ......................................................................................................................... 2

369

STATEMENT OF CONSIDERATIONS PETITION FOR ADVANCE WAIVER OF PATENT RIGHTS FOR  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

FOR FOR TECHNOLOGY DEVELOPED UNDER A PROPOSED ANL SUB- CONTRACT UNDER DOE CONTRACT NO. DE-AC02-06CH-11357, W(A)-09-054; CH-1521 As set out in the attached waiver petition and in subsequent discussions with DOE patent counsel, United Technologies Research Center. (UTRC) has requested an advance waiver of domestic and foreign patent rights for all subject inventions made under the identified proposed subcontract by its employees and its subcontractors' employees, regardless of tier, except inventions made by subcontractors eligible to retain title to inventions pursuant to P.L. 96-517, as amended, and National Laboratories. The work under the proposed subcontract is related to, and emanates from, DOE Solicitation No. DE-PS36-08G098010, entitled "Laboratory Call for

370

Cation-substituted spinel oxide and oxyfluoride cathodes for lithium ion batteries  

DOE Patents (OSTI)

The present invention includes compositions and methods of making cation-substituted and fluorine-substituted spinel cathode compositions by firing a LiMn.sub.2-y-zLi.sub.yM.sub.zO.sub.4 oxide with NH.sub.4HF.sub.2 at low temperatures of between about 300 and 700.degree. C. for 2 to 8 hours and a .eta. of more than 0 and less than about 0.50, mixed two-phase compositions consisting of a spinel cathode and a layered oxide cathode, and coupling them with unmodified or surface modified graphite anodes in lithium ion cells.

Manthiram, Arumugam; Choi, Wongchang

2014-05-13T23:59:59.000Z

371

Polymer–Graphene Nanocomposites as Ultrafast-Charge and -Discharge Cathodes for Rechargeable Lithium Batteries  

SciTech Connect

Electroactive polymers are a new generation of 'green' cathode materials for rechargeable lithium batteries. We have developed nanocomposites combining graphene with two promising polymer cathode materials, poly(anthraquinonyl sulfide) and polyimide, to improve their high-rate performance. The polymer-graphene nanocomposites were synthesized through a simple in-situ polymerization in the presence of graphene sheets. The highly dispersed graphene sheets in the nanocomposite drastically enhanced the electronic conductivity and allowed the electrochemical activity of the polymer cathode to be efficiently utilized. This allows for ultrafast charging and discharging - the composite can deliver more than 100 mAh/g within just a few seconds.

Song, Zhiping; Xu, Terrence (Tianren) [Tianren; Gordin, Mikhail; Jiang, Yingbing; Bae, In-Tae; Xiao, Qiangfeng; Zhan, Hui; Liu, Jun; Wang, Donghai

2012-05-09T23:59:59.000Z

372

IN-SITU XRD OF OPERATING LSFC CATHODES: DEVELOPMENT OF A NEW ANALYTICAL CAPABILITY  

SciTech Connect

A solid oxide fuel cell (SOFC) research capability has been developed that facilitates measuring the electrochemical performance of an operating SOFC while simultaneously performing x-ray diffraction on its cathode. The evolution of this research tool’s development is discussed together with a description of the instrumentation used for in-situ x-ray diffraction (XRD) measurements of operating SOFC cathodes. The challenges that were overcome in the process of developing this capability, which included seals and cathode current collectors, are described together with the solutions that are presently being applied to mitigate them.

Hardy, John S.; Templeton, Jared W.; Stevenson, Jeffry W.

2012-11-19T23:59:59.000Z

373

Free Energy for Protonation Reaction in Lithium-Ion Battery Cathode Materials  

Science Journals Connector (OSTI)

Free Energy for Protonation Reaction in Lithium-Ion Battery Cathode Materials ... The electrochemically inert layered defect-rocksalt compound Li2MnO3 has been structurally integrated with more electrochemically active layered compounds in order to enhance Li-ion-battery cathode stability. ... Cathodes of the material had a discharge capacity of 200 mA-h/g, based on the mass of the Li-Mn oxide; an electrode capacity of >140 mA-h/g was achieved on cycling in a room-temp. ...

R. Benedek; M. M. Thackeray; A. van de Walle

2008-08-06T23:59:59.000Z

374

ACTIVE CATHODES FOR SUPER-HIGH POWER DENSITY SOLID OXIDE FUEL CELLS THROUGH SPACE CHARGE EFFECTS  

SciTech Connect

This report summarizes the work done during the third quarter of the project. Effort was directed in two areas: (1) Further development of the model on the role of connectivity on ionic conductivity of porous bodies, including the role of grain boundaries, and its relationship to cathode polarization. Included indirectly through the grain boundary effect is the effect of space charge. (2) Synthesis of LSC + SDC composite cathode powders by combustion synthesis. (3) Fabrication and testing of anode-supported single cells made using synthesized LSC + ScDC composite cathodes.

Anil V. Virkar

2003-11-03T23:59:59.000Z

375

The evidence of cathodic micro-discharges during plasma electrolytic oxidation process  

SciTech Connect

Plasma electrolytic oxidation (PEO) processing of EV31 magnesium alloy has been carried out in fluoride containing electrolyte under bipolar pulse current regime. Unusual PEO cathodic micro-discharges have been observed and investigated. It is shown that the cathodic micro-discharges exhibit a collective intermittent behavior, which is discussed in terms of charge accumulations at the layer/electrolyte and layer/metal interfaces. Optical emission spectroscopy is used to determine the electron density (typ. 10{sup 15}?cm{sup ?3}) and the electron temperature (typ. 7500?K) while the role of F{sup ?} anions on the appearance of cathodic micro-discharges is pointed out.

Nominé, A., E-mail: alexandre.nomine@univ-lorraine.fr [Institut Jean Lamour, UMR 7198 CNRS, Université de Lorraine, Parc de Saurupt, 54011 Nancy (France); National Institute of Science and Technology “MISiS,” 4, Leninskij Prospekt, Moscow 119049 (Russian Federation); Martin, J.; Noël, C.; Henrion, G.; Belmonte, T. [Institut Jean Lamour, UMR 7198 CNRS, Université de Lorraine, Parc de Saurupt, 54011 Nancy (France); Bardin, I. V.; Kovalev, V. L.; Rakoch, A. G. [National Institute of Science and Technology “MISiS,” 4, Leninskij Prospekt, Moscow 119049 (Russian Federation)

2014-02-24T23:59:59.000Z

376

Advanced Research  

NLE Websites -- All DOE Office Websites (Extended Search)

05/2007 05/2007 NitrogeN evolutioN aNd CorrosioN MeChaNisMs With oxyCoMbustioN of Coal Description Under a grant from the University Coal Research (UCR) program, Brigham Young University (BYU) is leading a three-year research effort to investigate the physical processes that several common types of coal undergo during oxy-fuel combustion. Specifically, research addresses the mixture of gases emitted from burning, particularly such pollutants as nitrogen oxides (NO X ) and carbon dioxide (CO 2 ), and the potential for corrosion at the various stages of combustion. The UCR program is administered by the Advanced Research Program at the National Energy Technology Laboratory (NETL), under the U.S. Department of Energy's Office of

377

Aerosol Synthesis Of Cathode Materials For Li-Ion Batteries.  

E-Print Network (OSTI)

??Rapid advancement of technologies for production of next-generation Li-ion batteries will be critical to address the Nation's need for clean, efficient and secure transportation system… (more)

Zhang, Xiaofeng

2011-01-01T23:59:59.000Z

378

Development of High-Capacity Cathode Materials with Integrated...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

structures at the Advanced Photon Source (APS) by X-ray diffraction (XRD), X-ray absorption (XAS) and pair-distribution-function (PDF) analyses - on-going 4 ...

379

Preparation and characterization of Pt/C catalysts for PEMFC cathode: effect of different reduction methods  

Science Journals Connector (OSTI)

Three Pt/C catalysts for PEMFC cathode were prepared by impregnation-reduction method using...4, and N2H4...as reductant, respectively, and characterized by BET, CV and XRD. The effect of reduction methods on the...

Jianlu Zhang; Xiaoli Wang; Chuan Wu…

380

Organic photovoltaic devices with the bilayer cathode interfacial structure of pyromellitic dianhydride and lithium fluoride  

Science Journals Connector (OSTI)

In this study, we fabricated and characterized an organic photovoltaic (OPV) device with a pyromellitic dianhydride (PMDA)/lithium fluoride (LiF) cathode interfacial layer between poly(3-hexylthiophene?2,5-diyl)(P3HT)+[6,6]-phenyl C61 butyric acid methyl ester (PCBM) and Al. Compared to the OPV device with a LiF-only cathode interfacial layer having a power conversion efficiency (PCE) of 2.7%, the OPV device with the bilayer cathode interfacial structure [PMDA (0.3 nm)/LiF (0.7 nm)] exhibited a reduced resistance and a PCE value enhanced to 3.9% under an illumination condition of 100 mW cm?2 (AM1.5). The observed improvement of the OPV characteristics was attributed to the reduced leakage current of the device by the bilayer cathode interfacial layer.

Eunkyoung Nam; Seungsik Oh; Donggeun Jung; Hyoungsub Kim; Heeyeop Chae; Junsin Yi

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "advanced anl cathode" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Designing cathodic protection systems for marine structures and vehicles. ASTM special technical publication 1370  

SciTech Connect

Cathodic protection is an important method of protecting structures and ships from the corrosive effects of seawater. Poor designs can be far more costly to implement than optimal designs, Improper design can cause overprotection, with resulting paint blistering and accelerated corrosion of some alloys, underprotection, with resultant structure corrosion, or stray current corrosion of nearby structures. The first ASTM symposium specifically aimed at cathodic protection in seawater was intended to compile all the criteria and philosophy for designing both sacrificial and impressed current cathodic protection systems for structures and vehicles in seawater. The papers which are included in this STP are significant in that they summarize the major seawater cathodic protection system design philosophies. Papers have been processed separately for inclusion on the database.

Hack, H.P. [ed.

1999-07-01T23:59:59.000Z

382

Cathode materials for lithium ion batteries prepared by sol-gel methods  

Science Journals Connector (OSTI)

Improving the preparation technology and electrochemical performance of cathode materials for lithium ion batteries is a current major focus of research and development in the areas of materials, power sources...

H. Liu; Y. P. Wu; E. Rahm; R. Holze; H. Q. Wu

2004-06-01T23:59:59.000Z

383

SURFACE RECONSTRUCTION AND CHEMICAL EVOLUTION OF STOICHIOMETRIC LAYERED CATHODE MATERIALS FOR LITHIUM-ION BATTERIES  

E-Print Network (OSTI)

CATHODE MATERIALS FOR LITHIUM-ION BATTERIES Feng Lin, 1*As shown in Figure 2, in lithium-metal half-cells, capacitypredominantly occurs along the lithium diffusion channels,

Lin, Feng

2014-01-01T23:59:59.000Z

384

Numerical computation of electric arc with annular attachment on the cathode butt end  

Science Journals Connector (OSTI)

The results of computing a stationary arc with annular attachment on the butt end of a solid cylindrical cathode are presented. The influence of the discharge external parameters on the characteristics of arc ...

A. Zh. Zhainakov; R. M. Urusov; T. E. Urusova

2006-12-01T23:59:59.000Z

385

The current-voltage characteristic of a hot-cathode electric arc at low pressures  

Science Journals Connector (OSTI)

It has been shown that in a hot-cathode electric arc operating at low pressures of the working ... drop arises that results in an increase in discharge voltage with current even before the transition of the discharge

C. P. Nikulin

2011-03-01T23:59:59.000Z

386

Vehicle Technologies Office Merit Review 2014: High Energy Novel Cathode / Alloy Automotive Cell  

Energy.gov (U.S. Department of Energy (DOE))

Presentation given by 3M at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about high energy novel cathode / alloy...

387

SURFACE SEGREGATION STUDIES OF SOFC CATHODES: COMBINING SOFT X-RAYS AND ELECTROCHEMICAL IMPEDENCE SPECTROSCOPY  

SciTech Connect

A system to grow heteroepitaxial thin-films of solid oxide fuel cell (SOFC) cathodes on single crystal substrates was developed. The cathode composition investigated was 20% strontium-doped lanthanum manganite (LSM) grown by pulsed laser deposition (PLD) on single crystal (111) yttria-stabilized zirconia (YSZ) substrates. By combining electrochemical impedance spectroscopy (EIS) with x-ray photoemission spectroscopy (XPS) and x-ray absorption spectroscopy XAS measurements, we conclude that electrically driven cation migration away from the two-phase gas-cathode interface results in improved electrochemical performance. Our results provide support to the premise that the removal of surface passivating phases containing Sr2+ and Mn2+, which readily form at elevated temperatures even in O2 atmospheric pressures, is responsible for the improved cathodic performance upon application of a bias.

Miara, Lincoln J.; Piper, L.F.J.; Davis, Jacob N.; Saraf, Laxmikant V.; Kaspar, Tiffany C.; Basu, Soumendra; Smith, K. E.; Pal, Uday B.; Gopalan, Srikanth

2010-12-01T23:59:59.000Z

388

Hafnium metallocene compounds used as cathode interfacial layers for enhanced electron transfer in organic solar cells  

Science Journals Connector (OSTI)

We have used hafnium metallocene compounds as cathode interfacial layers for organic solar cells [OSCs]. A metallocene compound consists of...6, 6]-phenyl C61 butyric acid methyl ester, bis-(ethylcyclopentadienyl...

Keunhee Park; Seungsik Oh; Donggeun Jung; Heeyeop Chae…

2012-01-01T23:59:59.000Z

389

Polyaniline: characterization as a cathode active material in rechargeable batteries in aqueous electrolytes  

Science Journals Connector (OSTI)

An analytically pure form of chemically synthesized polyaniline having the emeraldine oxidation state has been used as a cathode active material together with a Zn anode in the...2 electrolyte (pH?4). The experim...

N. L. D. Somasiri; A. G. Macdiarmid

1988-01-01T23:59:59.000Z

390

LiCoO2-and LiMn2O4-based composite cathode materials  

Science Journals Connector (OSTI)

We have prepared composite cathode materials based on two electrochemically active compounds, LiCoO2 and LiMn2O4..., and investigated their properties. The results indicate that the discharge capacities of all th...

Ya. V. Shatilo; E. V. Makhonina; V. S. Pervov; V. S. Dubasova…

2006-07-01T23:59:59.000Z

391

Hydrous oxide species as inhibitors of oxygen reduction at platinum activated fuel cell cathodes  

Science Journals Connector (OSTI)

The successful development of a methanol/air fuel cell requires optimum performance of the air/ oxygen cathode at about 0.8 V vs RHE. ... oxygen gas reduction on platinum (the best electrocatalyst for this reacti...

L. D. Burke; J. K. Casey; J. A. Morrissey…

1994-01-01T23:59:59.000Z

392

Approaches to methanol-tolerant air cathodes for methanol-air fuel cells  

SciTech Connect

The achievement of truly methanol-tolerant oxygen cathodes will greatly assist the development of direct methanol-air fuel cells, because the cathode performance will not be affected by the presence of methanol or its oxidation products, which can diffuse across the cell from the anode. In addition, methanol will not be consumed at the cathode. Although platinum-based oxygen cathodes can continue to perform well in the presence of methanol under certain conditions, methanol can be consumed rapidly at such electrodes. Oxygen electrocatalysts were examined in the present work which are largely inactive for methanol oxidation and are also not affected significantly by the presence of methanol. These included heat-treated transition metal macrocycles and hydrated ruthenium dioxide. The most promising electrocatalyst examines thus far is heat-treated iron tetramethoxyphenylporphyrin supported on high area carbon.

Tryk, D.A.; Gupta, S.L.; Aldred, W.H.; Yeager, E.B. [Case Western Reserve Univ., Cleveland, OH (United States)

1994-12-31T23:59:59.000Z

393

Study of Anodic and Cathodic Catalysts for Water Electrolysis Activation of Membranes and Diaphragms  

Science Journals Connector (OSTI)

Optimization of the anodic and cathodic catalysts developed under the previous contract 067–76-EHI, with a view to identifying the best candidate for alkaline and acid electrolysis at temperatures up to 140°C,...

Placido M. Spaziante

1980-01-01T23:59:59.000Z

394

Thermal instabilities of organic carbonates with discharged cathode materials in lithium-ion batteries  

Science Journals Connector (OSTI)

Thermal instability of lithiated cathode materials with organic...4, LiMn2O4, and LiCoO2...were mixed with diethyl carbonate, dimethyl carbonate, ethylene carbonate, ethyl methyl carbonate, and propylene carbonat...

Wei-Jie Ou; Chen-Shan Kao; Yih-Shing Duh…

2014-06-01T23:59:59.000Z

395

Supply and demand in the material recovery system for cathode ray tube glass  

E-Print Network (OSTI)

This paper presents an analysis of the material recovery system for leaded glass from cathode ray tubes (CRTs). In particular, the global mass flow of primary and secondary CRT glass and the theoretical capacities for using ...

Nadeau, Marie-Claude

396

High-voltage pulsed discharge in an electron source with a plasma cathode  

Science Journals Connector (OSTI)

The nature of and mechanism for producing a high-voltage discharge in an electron source with a plasma cathode are investigated. The possibility of generating pulsed electron currents with an amplitude of 103–104

S. P. Bugaev; F. Ya. Zagulov

1973-10-01T23:59:59.000Z

397

A Plasma-Cathode Electron Source for Ribbon-Beam Generation at Forevacuum Pressures  

Science Journals Connector (OSTI)

A plasma electron source producing a ribbon beam at pressures of ... cathode is used as a plasma generator. Electrons are extracted through the emission slit in ... covered by a metal mesh. The maximum electron-b...

V. A. Burdovitsin; Yu. A. Burachevskii…

2003-03-01T23:59:59.000Z

398

Electrochemical Performance and Stability of the Cathode for Solid Oxide Fuel Cells IV. On the Ohmic loss in anode supported button cells with LSM or LSCF cathodes  

SciTech Connect

Anode-supported solid oxide fuel cells (SOFC) with a variety of YSZ electrolyte thicknesses were fabricated by tape casting and lamination. The preparation of the YSZ electrolyte tapes with various thicknesses was accomplished by using doctor blades with different gaps between the precision machined, polished blade and the casting surface. The green tape was cut into discs, sintered at 1385°C for 2 h, and subsequently creep-flattened at 1350°C for 2 h. Either LSCF with an SDC interlayer or LSM+YSZ composite was used as the cathode material for the fuel cells. The ohmic resistances of these anode-supported fuel cells were characterized by electrochemical impedance spectroscopy at temperatures from 500°C to 750°C. A linear relationship was found between the ohmic resistance of the fuel cell and the YSZ electrolyte thickness at all the measuring temperatures for both LSCF and LSM+YSZ cathode fuel cells. The ionic conductivities of the YSZ electrolyte, derived for the fuel cells with LSM+YSZ or LSCF cathodes, were independent of the cathode material and cell configuration. The ionic conductivities of the YSZ electrolyte was slightly lower than that of the bulk material, possibly due to Ni-doping into the electrolyte. The fuel cell with a SDC interlayer and LSCF cathode showed larger intercept resistance than the fuel cell with LSM+YSZ cathode, which was possibly due to the imperfect contact between the SDC interlayer and the YSZ electrolyte and the migration of Zr into the SDC interlayer to form an insulating solid solution during cell fabrication. Calculations of the contribution of the YSZ electrolyte to the total ohmic resistance showed that YSZ was still a satisfactory electrolyte at temperatures above 650°C. Explorations should be directed to reduce the intercept resistance to achieve significant improvement in cell performance.

Lu, Zigui; Zhou, Xiao Dong; Templeton, Jared W.; Stevenson, Jeffry W.

2010-05-08T23:59:59.000Z

399

Graphene Cathode-Based ZnO Nanowire Hybrid Solar Cells  

Science Journals Connector (OSTI)

Graphene Cathode-Based ZnO Nanowire Hybrid Solar Cells ... On the basis of this structure, we then demonstrate graphene cathode-based hybrid solar cells using two different photoactive materials, PbS quantum dots and the conjugated polymer P3HT, with AM 1.5G power conversion efficiencies of 4.2% and 0.5%, respectively, approaching the performance of ITO-based devices with similar architectures. ... graphene; ZnO nanowires; solar cells; ITO ...

Hyesung Park; Sehoon Chang; Joel Jean; Jayce J. Cheng; Paulo T. Araujo; Mingsheng Wang; Moungi G. Bawendi; Mildred S. Dresselhaus; Vladimir Bulovi?; Jing Kong; Silvija Grade?ak

2012-12-03T23:59:59.000Z

400

Three-dimensional effects of liquid water flooding in the cathode of a PEM fuel cell  

E-Print Network (OSTI)

. Researchers all over the world are focusing on optimizing this system to be cost competitive with energy conversion devices currently available. It is a well known fact that the cathode of the PEM fuel cell is the performance limiting component due...THREE DIMENSIONAL EFFECTS OF LIQUID WATER FLOODING IN THE CATHODE OF A PEM FUEL CELL by Dilip Natarajan and Trung Van Nguyen* Department of Chemical and Petroleum Engineering University of Kansas Lawrence, KS 66045, USA Submitted...

Natarajan, Dilip; Van Nguyen, Trung

2003-03-27T23:59:59.000Z

Note: This page contains sample records for the topic "advanced anl cathode" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

SWNT?MWNT Hybrid Architecture for Proton Exchange Membrane Fuel Cell Cathodes  

Science Journals Connector (OSTI)

SWNT?MWNT Hybrid Architecture for Proton Exchange Membrane Fuel Cell Cathodes ... A thin film of single-wall carbon nanotubes (SWNTs) and SWNT?multiwall carbon nanotube (MWNT) hybrids loaded with Pt have been evaluated as the cathode catalyst layer in proton exchange membrane fuel cells. ... Hydrogen, Fuel Cells & Infrastructure Technologies Program: Multi-Year Research, Development and Demonstration Plan: Planned Program Activities for 2003?2010; U.S. Department of Energy: Energy Efficiency and Renewable Energy: January 21, 2005. ...

Palanisamy Ramesh; Mikhail E. Itkis; Jason M. Tang; Robert C. Haddon

2008-05-28T23:59:59.000Z

402

Development of a cold cathode ion source for a mass spectrometer type vacuum leak detector  

E-Print Network (OSTI)

DEVELOPMENT OF A COLD CATHODE ION SOURCE FOR A MASS SPECTROL'ETER TYPE VACUUM LEAK DETECTOR A Dissertation By Harold A. Thomas June 1947 Approval as to style and content recommended* Head Deparanent of Electrical Engineering DEVELOPMENT OF A... Investigation of Ion Source ? .......... 6 III. Investigation of Ion Energies ...................... 21 IV. Development of Lrass Spectrometer Tube Utilizing the Cold Cathode Ion S o u r c e ........ 41 V* Conclusions...

Thomas, Harold Albert

2013-10-04T23:59:59.000Z

403

A dual pore carbon aerogel based air cathode for a highly rechargeable lithium-air battery  

Science Journals Connector (OSTI)

Abstract Cathode structure plays a vital role in lithium-air battery for that it can provide space for discharged products accommodation and free path for oxygen, e? and Li+ transport. However, pore blockage, cathode passivation and degradation all result in low discharge rates and poor cycling capability. To get rid of these predicaments, a novel highly conductive dual pore carbon aerogel based air cathode is fabricated to construct a lithium-air battery, which exhibits 18 to 525 cycles in the LiTFSI/sulfolane electrolyte at a current density varying from 1.00 mA cm?2 to 0.05 mA cm?2, accompanied by a high energy efficiency of 78.32%. We postulate that the essence lies in that the as-prepared air cathode inventively create a suitable tri-phase boundary reaction zone, facilitating oxygen and Li+ diffusion in two independant pore channels, thus realizing a relative higher discharge rate capability, lower pore blockage and cathode passivation. Further, pore structure, carbon loading, rate capability, discharge depth and the air's effect are exploited and coordinated, targeting for a high power and reversible lithium-air battery. Such nano-porous carbon aerogel air cathode of novel dual pore structure and material design is expected to be an attractive alternative for lithium-air batteries and other lithium based batteries.

Fang Wang; Yang-Hai Xu; Zhong-Kuan Luo; Yan Pang; Qi-Xing Wu; Chun-Sheng Liang; Jing Chen; Dong Liu; Xiang-hua Zhang

2014-01-01T23:59:59.000Z

404

S-band relativistic magnetron operation with an active plasma cathode  

SciTech Connect

Results of experimental research on a relativistic S-band magnetron with a ferroelectric plasma source as a cathode are presented. The cathode plasma was generated using a driving pulse (approx3 kV, 200 ns) applied to the ferroelectric cathode electrodes via inductive decoupling prior to the beginning of an accelerating pulse (200 kV, 150 ns) delivered by a linear induction accelerator. The magnetron and generated microwave radiation parameters obtained for the ferroelectric plasma cathode and the explosive emission plasma were compared. It was shown that the application of the ferroelectric plasma cathode allows one to avoid a time delay in the appearance of the electron emission to achieve a better matching between the magnetron and linear induction accelerator impedances and to increase significantly (approx30%) the duration of the microwave pulse with an approx10% increase in the microwave power. The latter results in the microwave radiation generation being 30% more efficient than when the explosive emission cathode is used, where efficiency does not exceed 20%.

Hadas, Y.; Sayapin, A.; Kweller, T.; Krasik, Ya. E. [Physics Department, Technion, Haifa 32000 (Israel)

2009-04-15T23:59:59.000Z

405

The design of a cathode to operate in an oxygen-rich environment  

SciTech Connect

The primary problem with Hall plasma accelerator operation on oxygen is poor cathode performance and short lifetime. The primary problem with micro Hall thrusters is the absence of a stable low power cathode. Cathodes traditionally used for both applications employ thermionic emitters which are not efficient and which are easily oxidized in an oxygen-rich environment. The field emitter cathode presented in this report has the potential of filling both vacancies since it does not require a high-power heater and can be scaled down with the size of the thruster. The advantages to using Hf and HfC as emitting materials are low work functions and high resistance to oxygen poisoning. Preliminary investigations proved that HfC emitters can operate in 7.6 mTorr oxygen pressure environments. The initial cathode design employs an electrostatic lens that also acts as an ion filter to prevent thruster ions from bombarding the field emitters while decelerating the electron beam and keeping it focused to ensure efficient performance. Electron trajectories through the cathode and ion filtering capabilities are presented in this report as predicted by the charged particle code, MAGIC.

Marrese, Colleen M.; Gallimore, Alec D.; Mackie, William A.; Evans, David E. [Plasmadynamic and Electric Propulsion Lab., University of Michigan Dept. of Aerospace Engineering FXB Building, 1320 Beal Ann Arbor, Michigan 48109-2118 (United States); Linfield Research Institute 900 Baker St. McMinnville, Oregon 97128-6894 (United States)

1997-01-10T23:59:59.000Z

406

Excimer emission from pulsed microhollow cathode discharges in xenon  

SciTech Connect

Direct current (dc) microhollow cathode discharge (MHCD) is an intense source for excimer radiation in vacuum ultraviolet at a wavelength of 172 nm in a high pressure xenon (Xe) gas. The concentration of precursors for the excimer formation, i.e., excited and ionized gas atoms, increases significantly by applying high voltage pulse onto the dc MHCD over the pulse duration range from 20 to 100 ns. The intensity of the excimer emission for the voltage pulse of 20 ns duration exceeds that of the emission intensity obtained from the same MHCD operated only in the dc mode, by one order of magnitude. In addition, the emission intensity increases by one order of magnitude over the pulse duration range from 20 to 100 ns. It can be assumed that the emission intensity of the MHCD source increases as long as the duration of the high voltage pulse is shorter than the electron relaxation time. For the high voltage pulse of 100 ns duration, the emission intensity has been found to be further enhanced by a factor of three when the gas pressure is increased from 200 to 800 mbar.

Lee, B.-J.; Nam, S. H. [Pohang Accelerator Laboratory, Pohang, Kyungbuk 790-784 (Korea, Republic of)] [Pohang Accelerator Laboratory, Pohang, Kyungbuk 790-784 (Korea, Republic of); Rahaman, H. [CSIR–CEERI Pilani, Rajasthan 333031 (India)] [CSIR–CEERI Pilani, Rajasthan 333031 (India); Iberler, M.; Jacoby, J. [Institute of Applied Physics, Goethe University, Max-von-Laue-Str. 1, 60438 Frankfurt am Main (Germany)] [Institute of Applied Physics, Goethe University, Max-von-Laue-Str. 1, 60438 Frankfurt am Main (Germany); Frank, K. [Physics Department 1, University of Erlangen – Nuremberg, 91058 Erlangen (Germany)] [Physics Department 1, University of Erlangen – Nuremberg, 91058 Erlangen (Germany)

2013-12-15T23:59:59.000Z

407

Ignition and extinction phenomena in helium micro hollow cathode discharges  

SciTech Connect

Micro hollow cathode discharges (MHCD) were produced using 250??m thick dielectric layer of alumina sandwiched between two nickel electrodes of 8??m thickness. A through cavity at the center of the chip was formed by laser drilling technique. MHCD with a diameter of few hundreds of micrometers allowed us to generate direct current discharges in helium at up to atmospheric pressure. A slowly varying ramped voltage generator was used to study the ignition and the extinction periods of the microdischarges. The analysis was performed by using electrical characterisation of the V-I behaviour and the measurement of He*({sup 3}S{sub 1}) metastable atoms density by tunable diode laser spectroscopy. At the ignition of the microdischarges, 2??s long current peak as high as 24?mA was observed, sometimes followed by low amplitude damped oscillations. At helium pressure above 400?Torr, an oscillatory behaviour of the discharge current was observed just before the extinction of the microdischarges. The same type of instability in the extinction period at high pressure also appeared on the density of He*({sup 3}S{sub 1}) metastable atoms, but delayed by a few ?s relative to the current oscillations. Metastable atoms thus cannot be at the origin of the generation of the observed instabilities.

Kulsreshath, M. K.; Schwaederle, L.; Dufour, T.; Lefaucheux, P.; Dussart, R. [GREMI, CNRS/Université d'Orléans (UMR7344), Orléans (France); Sadeghi, N. [LIPhy, CNRS and Universite Joseph Fourier (UMR5588), Grenoble (France); Overzet, L. J. [GREMI, CNRS/Université d'Orléans (UMR7344), Orléans (France); PSAL, UTDallas, Richardson, Texas 75080-3021 (United States)

2013-12-28T23:59:59.000Z

408

Advanced Editor Usage Advanced Editor Usage  

E-Print Network (OSTI)

Advanced Editor Usage Advanced Editor Usage Log in and click the edit icon How to navigate of the events will seek the video to where that event starts Page 1 of 11 #12;Advanced Editor Usage How Editor Usage 3. Type in the new caption name, enter any searchable metadata and click OK (the thumbnail

Benos, Panayiotis "Takis"

409

Advanced Manufacturing Office Overview  

Energy.gov (U.S. Department of Energy (DOE))

Overview presentation by the Advanced Manufacturing Office for the Microwave (MW) and Radio Frequency (RF) as Enabling Technologies for Advanced Manufacturing

410

BOUT++: Performance Characterization and Recent Advances in Design  

NLE Websites -- All DOE Office Websites (Extended Search)

BOUT++: BOUT++: Performance Characterization and Recent Advances in Design Sean Farley, 1,2 Ben Dudson, 3 Praveen Narayanan, 4 Lois Curfman McInnes, 1 Maxim Umansky, 5 Xueqiao Xu, 5 Satish Balay, 1 John Cary, 6 Alice Koniges, 4 Carol Woodward, 5 Hong Zhang 1 Edge Localized Modes ￿ Fast (∼ 100µs) eruption from the edge of tokamak plasmas ￿ If uncontrolled in ITER, these would release ∼ 20 MJ ￿ World-wide effort to understand and control these events The BOUT++ Simulation Code ￿ Based on BOUT written by X. Xu, et. al. from LLNL [1] ￿ New 3D simulation code developed at York with LLNL and ANL ￿ Simulates plasma fluid equations in curvilinear coordinate systems ￿ Runs on workstations, clusters, large-scale machines, e.g., Cray XE6 ELM Equations ρ 0 dω dt = B 2 0 b · ∇ ￿ J || B 0 ￿ + 2b 0 × κ 0 · ∇p ∂A || ∂t = -∇ || φ dp dt = - 1 B 0 b 0 × ∇φ · ∇p 0 ω = 1 B 0 ∇ 2 ⊥ φ J || = J ||0 - 1 µ

411

Advances in High Power Compact Accelerators | U.S. DOE Office...  

Office of Science (SC) Website

Links http:www.phy.anl.govacceleratorrdindex.html External link http:accelconf.web.cern.chAccelConfLINAC2012paperstupb046.pdf External link http:...

412

Evaluation of sterling silver as a contacting material for the cathode chamber of the solid-oxide fuel cell.  

E-Print Network (OSTI)

??This research focuses on the development and testing of contact paste materials for the SOFC, utilizing silver, in a simulated cathode environment. Test specimens were… (more)

Sakacsi, John.

2006-01-01T23:59:59.000Z

413

Simulative research on the expansion of cathode plasma in high-current electron beam diode  

SciTech Connect

The expansion of cathode plasma has long been recognized as a limiting factor in the impedance lifetime of high-current electron beam diode. Realistic modeling of such plasma is of great necessity in order to discuss the dynamics of cathode plasma. Using the method of particle-in-cell, the expansion of cathode plasma is simulated in this paper by a scaled-down diode model. It is found that the formation of cathode plasma increases the current density in the diode. This consequently leads to the decrease of the potential at plasma front. Once the current density has been increased to a certain value, the potential at plasma front would then be equal to or lower than the plasma potential. Then the ions would move towards the anode, and the expansion of cathode plasma is thereby formed. Different factors affecting the plasma expansion velocity are discussed in this paper. It is shown that the decrease of proton genatation rate has the benefit of reducing the plasma expansion velocity.

Xu Qifu; Liu Lie [College of Photoelectric Science and Engineering, National University of Defense Technology, Changsha 410073 (China)

2012-09-15T23:59:59.000Z

414

Microbial fuel cell with an algae-assisted cathode: A preliminary assessment  

Science Journals Connector (OSTI)

Abstract A microbial fuel cell (MFC) with an algae-assisted cathode, i.e., a system where the oxygen required by the cathode is not provided by aeration but by the photosynthetic process of the algae (Chlorella vulgaris), has been studied. The cathode was illuminated for 12 h each day (from 8:00 h to 20:00 h). 25 days was necessary to achieve steady state conditions. The time evolution of dissolved oxygen and cell voltage were assessed over the course of each day. As expected, the dissolved oxygen values were not constant throughout the day, reaching maximum values between 14:00 h and 20:00 h when dark phase reactions began and the algae started to consume oxygen. Cell voltage (Rext 120 ?) followed the same trend as the oxygen profile. The supply of CO2 in the cathode was also studied, and half an hour was enough time to get the system working properly. During the acclimation stage, power density increased up to 13.5 mW m?2 at steady state conditions. However, impedance analysis showed that polarization resistance was higher at the cathode than at the anode. Nevertheless, it can be concluded that the studied system is a feasible method to treat wastewater in a self-sustainable way.

Araceli González del Campo; Pablo Cañizares; Manuel A. Rodrigo; Francisco J. Fernández; Justo Lobato

2013-01-01T23:59:59.000Z

415

Experimental investigation of a capacitive blind hollow cathode discharge with central gas injection  

Science Journals Connector (OSTI)

The operating parameters and resulting plasma properties of a blind hollow cathode (BHC) discharge have been investigated. The hollow cathode was driven capacitively with a pulsed dc signal of 200 kHz in a power range between 50 and 100 W at an ambient pressure of about 10 Pa. The working gas was argon, which was introduced with a ceramic capillary at different positions of the longitudinal axis of the hollow cathode with flow rates of between 30 and 1000 sccm. The current–voltage characteristics were recorded.The pressure at the end of the BHC was measured with a miniaturized pressure transducer with varying volumetric flow rate and axial position of the capillary in the hollow cathode. To characterize the ignition behaviour of the system, the measured breakdown voltages were compared with phenomenological Paschen curves calculated from the pressure data.Optical emission spectroscopy was used to examine the origins of the light emission, comparing the glow mode and hollow cathode mode in particular.A high-speed camera recorded some plasma processes. A mounting with an indium tin oxide coated glass was used to observe the inner volume of the BHC along the longitudinal axis, while the plasma was operated with different parameters. The optical observations revealed an inhomogeneous plasma condition along the axis.

D Hoffmann; M Müller; D Petkow; G Herdrich; S Lein

2014-01-01T23:59:59.000Z

416

Application of cathodic arc deposited amorphous hard carbon films to the head/disk tribology  

SciTech Connect

Amorphous hard carbon films deposited by filtered cathodic arc deposition exhibit very high hardness and elastic modulus, high mass density, low coefficient of friction, and the films are very smooth. All these properties are beneficial to applications of these films for the head/disk interface tribology. The properties of cathodic arc deposited amorphous carbon films are summarized, and they are compared to sputter deposited, hydrogenated (CH{sub x}), and nitrogenated (CN{sub x}) carbon films which are the present choice for hard disk and slider coatings. New developments in cathodic arc coaters are discussed which are of interest to the disk drive industry. Experiments on the nanotribology, mass density and hardness, corrosion behavior, and tribochemical behavior of cathodic arc films are reported. A number of applications of cathodic arc deposited films to hard disk and slider coatings are described. It is shown that their tribological performance is considerably better compared to CH{sub x} and CN{sub x} films.

Anders, S. [Lawrence Berkeley National Lab., CA (United States). Advanced Light Source Div.; Bhatia, C.S. [SSD/IBM, San Jose, CA (United States); Fong, W.; Lo, R.Y.; Bogy, D.B. [Univ. of California, Berkeley, CA (United States). Computer Mechanics Lab.

1998-04-01T23:59:59.000Z

417

Simulated coal-gas-fueled molten carbonate fuel cell development program. Topical report: Cathode compatibility tests  

SciTech Connect

In previous work, International Fuel Cells Corporation (EFC) found interactions between molten carbonate fuel cell cathode materials being considered as replacements for the presently used nickel oxide and matrix materials. Consequently, this work was conducted to screen additional new materials for mutual compatibility. As part of this program, experiments were performed to examine the compatibility of several candidate, alternative cathode materials with the standard lithium aluminate matrix material in the presence of electrolyte at cell potentials. Initial cathode candidates were materials lithium ferrite, yttrium iron garnet, lithium manganite and doped ceria which were developed by universities, national laboratories, or contractors to DOE, EPRI, or GRI. These investigations were conducted in laboratory scale experiments. None of the materials tested can directly replace nickel oxide or indicate greater stability of cell performance than afforded by nickel oxide. Specifically: (1) no further work on niobium doped ceria is warranted; (2) cobalt migration was found in the lithium ferrite cathode tested. This could possibly lead to shorting problems similiar to those encountered with nickel oxide; (3) Possible shorting problems may also exist with the proprietary dopant in YIG; (4) lithium ferrite and YIG cathode were not single phase materials. Assessment of the chemical stability, i.e., dopant loss, was severely impeded by dissolution of these second phases in the electrolyte; and (5) Magnesium doped lithium manganite warrants further work. Electrolytes should contain Mg ions to suppress dopant loss.

Johnson, W.H.

1992-07-01T23:59:59.000Z

418

Polymers For Advanced Lithium Batteries  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Accomplishments 1 m SEM of cathode LiFePO 4 +Binder (5050) Nothing else, no optimization Li metal (anode) Al current collector Polymer electrolyte membrane (S-EO-S)...

419

Microwave Plasma Chemical Vapor Deposition of Carbon Coatings on LiNi1/3Co1/3Mn1/3O2 for Li-Ion Battery Composite Cathodes  

E-Print Network (OSTI)

1/3 Mn 1/3 O 2 cathode active material powders for lithium-conductivity of cathode active materials can limit the powergraphitic coatings on cathode active material powders and

Doeff, M.M.

2012-01-01T23:59:59.000Z

420

PEMFC Cathode Catalyst Contamination Evaluation with a RRDE- Acetylene  

Science Journals Connector (OSTI)

Abstract The effect of C2H2 on the oxygen reduction reaction (ORR) for a commercial Pt/C catalyst was investigated using rotating ring disk electrode (RRDE) technique in acidic solution. This study was undertaken to provide insight into the mechanism of C2H2 contamination of the cathodes in proton exchange membrane fuel cells. The cyclic voltammetry results show a high C2H2 coverage on the Pt surface and an almost complete loss of the electrochemical surface area in the presence of 0.14 mM C2H2. The RRDE was used to measure the ORR polarization curves and H2O2 production in air. The introduction of C2H2 shifts the ORR onset potential in the negative direction by 330 mV, and no limiting current can be observed in the potential scan window. The significant retardation of the ORR is associated with the complete loss of the ECSA, as the adsorption of C2H2 on the Pt sites results in the inhibition of both HUPD and O2 adsorption. Furthermore, it is proposed that C2H2 adsorption also has an impact on the adsorption configuration of O2 molecules; the Pauling configuration prevails due to the spatial limitations imposed by the presence of adsorbed C2H2 on Pt. As a result, both the ring-disk and Koutecky-Levich measurements show a shift in the reaction pathway from a 4- to a 2-electron reduction: the H2O2 production increases and the charge transfer number decreases. The ORR rate determining step is observed to be shifted from the first electron transfer to other possible steps. This change is confirmed by the Tafel slope measurement, which increases significantly and is most likely due to the changes in the adsorption energy of O2. Nearly complete recovery of the performance is attainable by stopping the C2H2 exposure. The unrecovered performance is attributed to the remaining surface adsorbates.

Junjie Ge; Jean St-Pierre; Yunfeng Zhai

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "advanced anl cathode" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Development of Alternative and Durable High Performance Cathode Supports for PEM Fuel Cells  

NLE Websites -- All DOE Office Websites (Extended Search)

Alternative and Durable High Alternative and Durable High Performance Cathode Supports for PEM Fuel Cells Development of Alternative and Durable High Development of Alternative and Durable High Performance Cathode Supports for PEM Fuel Cells Performance Cathode Supports for PEM Fuel Cells PNNL: Yong Wang Conrad Zhang Vilayanur Viswanath Yuehe Lin Jun Liu Project kick Project kick - - off meeting off meeting Feb 13 Feb 13 - - 14, 2007 14, 2007 Ballard Power Systems: Stephen Campbell University of Delaware: Jingguang Chen ORNL: Sheng Dai 2 Technical Issues and Objective Technical Issues and Objective Current technical issues z Carbon support „ Susceptible to oxidation under fuel cell operating conditions. „ Oxidation further catalyzed by Pt „ Corrosion leads to Pt migration and agglomeration

422

Cathodic protection system design for steel pilings of a wharf structure  

SciTech Connect

Corrosion of steel pilings in sea and brackish water is mostly due to the establishment of localized corrosion cells and the effects of the tidal changes. The most frequently used corrosion protection systems are coatings and/or cathodic protection. These protective systems when properly designed, installed and operated are very effective in preventing corrosion problems. The design of a cathodic protection system, in order to be effective and reliable, must take into consideration all technical design criteria, the type of materials used, the geometric shape of the structure, environmental conditions, site restrictions, and any outside interferences. These design considerations, as well as the use of design data and an overall design methodology for a cathodic protection system for pipe and sheet piling used in a wharf structure, are discussed in this paper.

Nikolakakos, S.

1999-07-01T23:59:59.000Z

423

Long-pulse arc-discharge plasma source with cold cathode for diagnostic neutral beam injector  

SciTech Connect

Long-pulse cold cathode arc-discharge plasma generators have been successfully used as high-quality hydrogen ion sources for plasma diagnostic neutral beams. One of the main advantages of this type of plasma source is a high proton fraction (80%-90%). However, the lifetime of the plasma source is limited due to intensive electrode's erosion, especially at the cathode region. An optimized design of the cathode and the nearest electrodes is found which reduces the erosion and allows us to increase the pulse length. The plasma source produces the extracted ion current up to 3 A at a low angular divergence, and at the pulse duration up to 2 s.

Deichuli, P. P.; Ivanov, A. A.; Stupishin, N. V. [Budker Institute of Nuclear Physics, Novosibirsk 630090 (Russian Federation)

2008-02-15T23:59:59.000Z

424

PEDOT: Cathode active material with high specific capacity in novel electrolyte system  

Science Journals Connector (OSTI)

Poly(3,4-ethylenedioxythiophene) (PEDOT) was chemically synthesized and characterized by FT-IR, XRD, XPS, TGA and organic elemental analysis (EA). The polymer was tested as cathode active material for rechargeable lithium batteries. The cyclic voltammetry (CV) and charge–discharge tests of PEDOT as the cathode active material was investigated in an electrolyte system of LiN(CF3SO2)2/1,2-dimethoxyethane/1,3-dioxopentane (1:2 by weight). The peak discharge capacity of up to 691 mAh/g was obtained during the 1st cycle, and remained above 330 mAh/g after 44 cycles. These results indicate that PEDOT can afford a high specific capacity as a cathode active material. A redox mechanism is tentatively proposed.

Lizhi Zhan; Zhiping Song; Jingyu Zhang; Jing Tang; Hui Zhan; Yunhong Zhou; Caimao Zhan

2008-01-01T23:59:59.000Z

425

Microsoft Word - Poster Abstract_2010_GATech_LSM-Infiltrated LSCF Cathodes.docx  

NLE Websites -- All DOE Office Websites (Extended Search)

and Interfaces and Interfaces in LSM-Infiltrated LSCF Cathodes Wentao Qin, Mingfei Liu, Matthew E. Lynch, Jong-jin Choi and Meilin Liu Center for Innovative Fuel Cell and Battery Technologies School of Materials Science and Engineering Georgia Institute of Technology 771 Ferst Dr., Atlanta, GA 30332-0245 Telephone: 404-894-6114 Email: meilin.liu@mse.gatech.edu Recent studies suggest that the stability and performance of a porous La x Sr 1-x Co y Fe 1-y O 3- (LSCF) cathode may be enhanced by the infiltration of a thin-film La x Sr 1-x MnO 3- (LSM) coating. However, the mechanism of the observed enhancement is still unknown. This poster will present our recent findings in microanalyses of the structure, composition, and morphology of the LSM and LSCF surfaces as well as the LSM/LSCF interfaces in LSM-infiltrated LSCF cathodes. Results indicate that a

426

Mechanism for Oxygen Reduction Reaction on Pt3Ni Alloy Fuel Cell Cathode  

Science Journals Connector (OSTI)

The efficiency of the oxygen reduction reaction (ORR), 4H+ + 4e– + O2 ? 2H2O, at the cathode of a polymer electrolyte membrane fuel cell (PEMFC) is a critical issue for commercial application of this type of fuel cells. ... This agrees with the volcano-like trend for ORR catalysts,(7, 31, 32) when the activity first increases and then decreases as the catalyst d-band center shifts downward. ... Improved Non-Pt Alloys for the Oxygen Reduction Reaction at Fuel Cell Cathodes Predicted from Quantum Mechanics ...

Yao Sha; Ted H. Yu; Boris V. Merinov; Pezhman Shirvanian; William A. Goddard; III

2012-09-04T23:59:59.000Z

427

Carbon Nanotube Film by Filtration as Cathode Catalyst Support for Proton-Exchange Membrane Fuel Cell  

Science Journals Connector (OSTI)

Carbon Nanotube Film by Filtration as Cathode Catalyst Support for Proton-Exchange Membrane Fuel Cell ... 1-10 Some early investigations found that by using the normal paste method and simply replacing carbon black particles with disordered multiwalled CNTs as the support for Pt catalyst nanoparticles higher PEMFC and DMFC performances were achieved. ... activity of the CNT cathode catalysts was measured in a direct methanol fuel cell by use of a Pt-Ru/C anode, and use of a Nafion-115 membrane. ...

Wenzhen Li; Xin Wang; Zhongwei Chen; Mahesh Waje; Yushan Yan

2005-09-08T23:59:59.000Z

428

Amp\\`ere-Class Pulsed Field Emission from Carbon-Nanotube Cathodes in a Radiofrequency Resonator  

E-Print Network (OSTI)

Pulsed field emission from cold carbon-nanotube cathodes placed in a radiofrequency resonant cavity was observed. The cathodes were located on the backplate of a conventional $1+\\frac{1}{2}$-cell resonant cavity operating at 1.3-GHz and resulted in the production of bunch train with maximum average current close to 0.7 Amp\\`ere. The measured Fowler-Nordheim characteristic, transverse emittance, and pulse duration are presented and, when possible, compared to numerical simulations. The implications of our results to high-average-current electron sources are briefly discussed.

Mihalcea, D; Hartzell, J; Panuganti, H; Boucher, S M; Murokh, A; Piot, P; Thangaraj, J C T

2015-01-01T23:59:59.000Z

429

The pipe coating as an engineered part of the cathodic protection system  

SciTech Connect

The basic corrosion process is reviewed and the factors influencing the thermodynamic driving forces are discussed. The roles played by both the coating and the cathodic protection system are discussed, and the relationship between the two systems relating to corrosion under a coating film is shown. The importance of treating the coating as part of the cathodic protection system is explained. The need to be aware of the engineering variables of the pipe coating, not only as applied, but also as a function of time, is presented.

Mills, G.

1988-12-01T23:59:59.000Z

430

Composite Cathode for High-Power Density Solid Oxide Fuel Cells  

SciTech Connect

Reduction of solid oxide fuel cell (SOFC) operating temperature will play a key role in reducing the stack cost by allowing the use of low-cost metallic interconnects and new approaches to sealing, while making applications such as transportation more feasible. Reported results for anode-supported SOFCs show that cathode polarization resistance is the primary barrier to achieving high power densities at operating temperatures of 700 C and lower. This project aims to identify and develop composite cathodes that could reduce SOFC operating temperatures below 700 C. This effort focuses on study and use of (La,Sr)(Co,Fe)O{sub 3} (LSCF) based composite cathodes, which have arguably the best potential to substantially improve on the currently-used, (La,Sr)MnO{sub 3}-Yttria-stabilized Zirconia. During this Phase I, it was successfully demonstrated that high performances can be achieved with LSCF/Gadolinium-Doped Ceria composite cathodes on Ni-based anode supported cells operating at 700 C or lower. We studied electrochemical reactions at LSCF/Yttria-stabilized Zirconia (YSZ) interfaces, and observed chemical reactions between LSCF and YSZ. By using ceria electrolytes or YSZ electrolytes with ceria diffusion barrier layers, the chemical reactions between LSCF and electrolytes were prevented under cathode firing conditions necessary for the optimal adhesion of the cathodes. The protection provided by ceria layer is expected to be adequate for stable long-term cathode performances, but more testing is needed to verify this. Using ceria-based barrier layers, high performance Ni-YSZ anode supported cells have been demonstrated with maximum power densities of 0.8W/cm2 at 700 C and 1.6W/cm{sup 2} at 800 C. Ni-SDC anode supported cells with SDC electrolytes yielded >1W/cm{sup 2} at 600 C. We speculate that the power output of Ni-YSZ anode supported cell at 700 C and lower, was limited by the quality of the Ceria and Ceria YSZ interface. Improvements in the low-temperature performances are expected based on further development of barrier layer fabrication processes and optimization of cathode microstructure.

Ilwon Kim; Scott Barnett; Yi Jiang; Manoj Pillai; Nikkia McDonald; Dan Gostovic; Zhongryang Zhan; Jiang Liu

2004-01-31T23:59:59.000Z

431

Quantum efficiency temporal response and lifetime of a GaAs cathode in SRF electron gun  

SciTech Connect

RF electron guns with a strained super lattice GaAs cathode can generate polarized electron beam of higher brightness and lower emittance than do DC guns, due to their higher field gradient at the cathode's surface. In a normal conducting RF gun, the extremely high vaccum required by these cathodes can not be met. We report on an experiment with a superconducting SRF gun, which can maintain a vacuum of nearly 10-12 torr because of cryo-pumping at the temperature of 4.2K. With conventional activation, we obtained a QE of 3% at 532 nm, with lifetime of nearly 3 days in the preparation chamber. We plan to use this cathode in a 1.3 GHz 1/2 cell SRF gun to study its performance. In addition, we studied the multipacting at the location of cathode. A new model based on the Forkker-Planck equation which can estimate the bunch length of the electron beam is discussed in this paper. Future particle accelerators such as eRHIC and ILC require high brightness, high current polarized electrons Recently, using a superlattice crystal, the maximum polarization of 95% was reached. Activation with Cs,O lowers the electron affinity and makes it energetically possible for all the electrons excited in to the conduction band and reach the surface to escape into the vacuum. Presently the polarized electron sources are based on DC gun, such as that at the CEBAF at Jlab. In these devices, the life time of the cathode is extended due to the reduced back bombardment in their UHV conditions. However, the low accelerating gradient of the DC guns lead to poor longitudinal emittance. The higher accelerating gradient of the RF gun generates low emittance beams. Superconducting RF guns combine the excellent vacuum conditions of the DC guns with the higher accelerating gradients of the RF guns and provide potentially a long lived cathode with very low transverse and longitudinal emittance. In our work at BNL, we successfully activated the GaAs. The quantum efficient is 3% at 532 nm and is expected to improve further. In addition, we studied the multipacting at the location of cathode. A new model based on the Forkker-Planck equation which can estimate the bunch length of the electron beam is discussed in this paper.

Wang, E.; Ben-Zvi, I.; Kewisch, J.; Burrill, A.; Rao, T.; Wu, Q.; Holmes, D.

2010-05-23T23:59:59.000Z

432

Voltage Gain in Lithiated Enolate-Based Organic Cathode Materials by Isomeric Effect  

Science Journals Connector (OSTI)

Voltage Gain in Lithiated Enolate-Based Organic Cathode Materials by Isomeric Effect ... For a long time, this class of redox-active materials has been disregarded mainly due to stability issues but, in recent years, progress has been made demonstrating that organics undeniably exhibit considerable assets. ... In practice, dilithium (2,3-dilithium-oxy)-terephthalate compound (Li4C8H2O6) was first produced through an eco-friendly synthesis scheme based on CO2 sequestration, then characterized, and finally tested electrochemically as lithiated cathode material vs. Li. ...

Sébastien Gottis; Anne-Lise Barrès; Franck Dolhem; Philippe Poizot

2014-03-04T23:59:59.000Z

433

Solid oxide fuel cells having porous cathodes infiltrated with oxygen-reducing catalysts  

DOE Patents (OSTI)

Solid-oxide fuel cells include an electrolyte and an anode electrically coupled to a first surface of the electrolyte. A cathode is provided, which is electrically coupled to a second surface of the electrolyte. The cathode includes a porous backbone having a porosity in a range from about 20% to about 70%. The porous backbone contains a mixed ionic-electronic conductor (MIEC) of a first material infiltrated with an oxygen-reducing catalyst of a second material different from the first material.

Liu, Meilin; Liu, Ze; Liu, Mingfei; Nie, Lifang; Mebane, David Spencer; Wilson, Lane Curtis; Surdoval, Wayne

2014-08-12T23:59:59.000Z

434

ACTIVE CATHODES FOR SUPER-HIGH POWER DENSITY SOLID OXIDE FUEL CELLS THROUGH SPACE CHARGE EFFECTS  

SciTech Connect

This report summarizes the work done during the sixth quarter of the project. Effort was directed in three areas: (1) Further development of the model on the role of connectivity on ionic conductivity of porous bodies, including the role of grain boundaries and space charge region. (2) Calculation of the effect of space charge and morphology of porous bodies on the effective charge transfer resistance of porous composite cathodes. (3) The investigation of the three electrode system for the measurement of cathodic polarization using amperometric sensors.

Anil V. Virkar

2004-05-17T23:59:59.000Z

435

Optimization of carbon-supported platinum cathode catalysts for DMFC operation.  

SciTech Connect

In this paper, we describe performance and optimization of carbon-supported cathode catalysts at low platinum loading. We find that at a loading below 0.6 mg cm-2 carbon-supported platinum outperforms platinum black as a DMFC cathode catalyst. A catalyst with a 1:1 volume ratio of the dry NafionTM to the electronically conducting phase (platinum plus carbon support) provides the best performance in oxygen reduction reaction. Thanks to improved catalyst utilization, carbon-supported catalysts with a platinum content varying from 40 wt% to 80 wt% deliver very good DMFC performance, even at relatively modest precious metal loadings investigated in this work.

Zhu, Y. (Yimin); Brosha, E. L. (Eric L.); Zelenay, P. (Piotr)

2002-01-01T23:59:59.000Z

436

Improved Non-Pt Alloys for the Oxygen Reduction Reaction at Fuel Cell Cathodes Predicted from Quantum Mechanics  

E-Print Network (OSTI)

the hypothesis that improved alloy catalysts for the oxygen reduction reaction (ORR) at fuel cell cathodes should catalysts for polymer electrolyte mem- brane fuel cell (PEMFC) than pure Pt, while maintaining or improving the surface under FC operating conditions.9 To determine new alloy candidates for PEMFC cathodes, we

Goddard III, William A.

437

Graphene-Wrapped Sulfur Particles as a Rechargeable Lithium–Sulfur Battery Cathode Material with High Capacity and Cycling Stability  

Science Journals Connector (OSTI)

Graphene-Wrapped Sulfur Particles as a Rechargeable Lithium–Sulfur Battery Cathode Material with High Capacity and Cycling Stability ... The resulting graphene–sulfur composite showed high and stable specific capacities up to ?600 mAh/g over more than 100 cycles, representing a promising cathode material for rechargeable lithium batteries with high energy density. ...

Hailiang Wang; Yuan Yang; Yongye Liang; Joshua Tucker Robinson; Yanguang Li; Ariel Jackson; Yi Cui; Hongjie Dai

2011-06-24T23:59:59.000Z

438

A Hybrid Laser-driven E-beam Injector Using Photo-cathode Electron Gun and superconducting Cavity*  

E-Print Network (OSTI)

A Hybrid Laser-driven E-beam Injector Using Photo-cathode Electron Gun and superconducting Cavity, Beijing 100871, China * Work supported by NNSF of China Abstract A laser-driven photo-cathode electron gun constructed and tested. As the next step, a hybrid photo-injector, using a DC laser-driven electron gun

Geng, Rong-Li

439

The Orientation Distributions of Lines, Surfaces, and Interfaces around Three-Phase Boundaries in Solid Oxide Fuel Cell Cathodes  

E-Print Network (OSTI)

in Solid Oxide Fuel Cell Cathodes Shen J. Dillon, Lam Helmick,§,¶ Herbert M. Miller,§ Lane Wilson in a multiphase ceramic material. I. Introduction THE active cathode regions of many solid oxide fuel cells (SOFCs of yttria-stabilized zirconia and lanthanum strontium manganese oxide, both before and after mild

Rohrer, Gregory S.

440

High-Energy Cathode Materials (Li2MnO3–LiMO2) for Lithium-Ion Batteries  

Science Journals Connector (OSTI)

High-Energy Cathode Materials (Li2MnO3–LiMO2) for Lithium-Ion Batteries ... Fabrication of Nitrogen-Doped Holey Graphene Hollow Microspheres and Their Use as an Active Electrode Material for Lithium Ion Batteries ... Li-rich materials are considered the most promising for Li-ion battery cathodes, as high energy densities can be achieved. ...

Haijun Yu; Haoshen Zhou

2013-03-28T23:59:59.000Z

Note: This page contains sample records for the topic "advanced anl cathode" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Hierarchically Structured Ni3S2/Carbon Nanotube Composites as High Performance Cathode Materials for Asymmetric Supercapacitors  

Science Journals Connector (OSTI)

Hierarchically Structured Ni3S2/Carbon Nanotube Composites as High Performance Cathode Materials for Asymmetric Supercapacitors ... Therefore, the active surface area of the Ni3S2 nanoparticles is increased, which further enhances the capacitive performance of the composite electrode. ... nickel sulfide; carbon nanotube; composite; cathode material; asymmetric supercapacitor ...

Chao-Shuan Dai; Pei-Yi Chien; Jeng-Yu Lin; Shu-Wei Chou; Wen-Kai Wu; Ping-Hsuan Li; Kuan-Yi Wu; Tsung-Wu Lin

2013-11-05T23:59:59.000Z

442

Ultrathin Spinel LiMn2O4 Nanowires as High Power Cathode Materials for Li-Ion Batteries  

E-Print Network (OSTI)

Ultrathin Spinel LiMn2O4 Nanowires as High Power Cathode Materials for Li-Ion Batteries Hyun materials as cathode in lithium ion batteries because of its intrinsic low-cost, environmental friendliness that enhances the contact between active material grains and electrolyte. In particular, LiMn2O4 nanorods

Cui, Yi

443

Phase Separations in LiFe1–xMnxPO4: A Random Stack Model for Efficient Cathode Materials  

Science Journals Connector (OSTI)

Lithium transition metal phosphates are of interest as storage cathodes for rechargeable Li batteries because of their high energy d., low raw materials cost, environmental friendliness and safety. ... The former material, proven to be very promising as active cathode material in Li metal and Li-ion batteries, was synthesized through a new procedure that combines a simple sol-gel pptn. ...

Weifeng Huang; Shi Tao; Jing Zhou; Cheng Si; Xing Chen; Wei Huang; Chuanhong Jin; Wangsheng Chu; Li Song; Ziyu Wu

2013-12-20T23:59:59.000Z

444

Crystal Orientation Tuning of LiFePO4 Nanoplates for High Rate Lithium Battery Cathode Materials  

Science Journals Connector (OSTI)

For an electrochemical cell to deliver capacity at high rate, all parts of the Li+-electron path between the anode and the cathode active material have to be capable of sustaining this rate. ... Materials with the olivine LixMPO4 structure form an important class of rechargeable battery cathodes. ...

Li Wang; Xiangming He; Wenting Sun; Jianlong Wang; Yadong Li; Shoushan Fan

2012-10-17T23:59:59.000Z

445

Nanorod PEM Fuel Cell Cathodes with Controlled Porosity M. D. Gasda, G. A. Eisman,* and D. Gallz  

E-Print Network (OSTI)

Nanorod PEM Fuel Cell Cathodes with Controlled Porosity M. D. Gasda, G. A. Eisman,* and D. Gallz as cathode electrodes in proton exchange membrane PEM fuel cells. Deposition on flat substrates yields February 4, 2010. Proton exchange membrane PEM fuel cells are promising for future automotive applications

Gall, Daniel

446

Thermal runaway features of 18650 lithium-ion batteries for LiFePO4 cathode material by DSC and VSP2  

Science Journals Connector (OSTI)

In view of availability, accountability, and applicability, LiFePO4 cathode material has been confirmed to be better than LiCoO2...cathode material. Nevertheless, few related researches were conducted for thermal

Chia-Yuan Wen; Can-Yong Jhu; Yih-Wen Wang…

2012-09-01T23:59:59.000Z

447

Seven Projects That Will Advance Solid Oxide Fuel Cell Research Selected by  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

That Will Advance Solid Oxide Fuel Cell Research That Will Advance Solid Oxide Fuel Cell Research Selected by DOE for Further Development Seven Projects That Will Advance Solid Oxide Fuel Cell Research Selected by DOE for Further Development July 27, 2012 - 1:00pm Addthis Washington, D.C. - Seven projects that will help develop low-cost solid oxide fuel cell (SOFC) technology for environmentally responsible central power generation from the Nation's abundant fossil energy resources have been selected for further research by the Department of Energy (DOE). The projects, managed by the Office of Fossil Energy's National Energy Technology Laboratory (NETL), are valued at a total of $4,391,570, with DOE contributing $3,499,250 and the remaining cost provided by the recipients. Four of the selected projects will pursue advances in cathode performance,

448

Advanced Critical Advanced Energy Retrofit Education and Training...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Critical Advanced Energy Retrofit Education and Training and Credentialing - 2014 BTO Peer Review Advanced Critical Advanced Energy Retrofit Education and Training and...

449

AdvAnced  

NLE Websites -- All DOE Office Websites (Extended Search)

AdvAnced test reActor At the InL advanced Unlike large, commercial power reactors, ATR is a low- temperature, low-pressure reactor. A nuclear reactor is basically an elaborate...

450

STATEMENT OF CONSIDERATIONS PETITION FOR ADVANCE WAIVER OF PATENT RIGHTS BY 3M  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

COMPANY C'3M") UNDER COOPERATIVE AGREEMENT NO. DE-FC36 07G017006 BETWEEN 3M AND DOE; W(A)-OS-01S; CH-1441 The Petitioner, 3M, has requested a waiver of domestic and certain foreign patent rights for all subject inventions that may be conceived or first actually reduced to practice by 3M arising from its participation under the above referenced cooperative agreement entitled "Advanced Cathode Catalysts and Supports for PEM Fuel Cells." The objectives of the project are development of a durable, low cost (pt group metal content and manufacturability), high performance cathode catalyst and support system capable of demonstrating mass activity greater than or equal to 0.44 AlmgPt, generating a stack specific power density of less than

451

STATEMENT OF CONSIDERATIONS PETITION FOR ADVANCE WAIVER OF PATENT RIGHTS BY  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

JOHNSON MATTHEY FUEL CELL INC. ("JMFC") UNDER A SUB- JOHNSON MATTHEY FUEL CELL INC. ("JMFC") UNDER A SUB- AWARD OF COOPERATIVE AGREEMENT NO. DE-FC36-07G017019 BETWEEN UTC POWER CORPORATION (UTC) AND DOE; W(A)-09- 002; CH·1468 The Petitioner, JMFC, has requested a waiver of domestic and certain foreign patent rights for all subject inventions that may be conceived or first actually reduced to practice by JMFC Of: its affiliates arising from their participation under a sub-award to the above referenced cooperative agreement entitled "Highly Dispersed Alloy Cathode Catalyst for Durability." ' The objective of the sub-award is to develop an advanced PEMFC cathode alloy catalyst with high mass activity and outstanding catalyst stability, meeting DOE's Energy Efficiency and Renewable Energy (EERE) targets. More specifically, the object

452

Advanced Search Search Tips  

E-Print Network (OSTI)

Advanced Search Search Tips Advanced Search Search Tips springerlink.com SpringerLink 2,000 40,000 20,000 2010 11 Please visit 7 http://www.springerlink.com GO 1997 1997 SpringerLink Advanced Search Search Tips CONTENT DOI CITATION DOI ISSN ISBN CATEGORY AND DATE LIMITERS Journals Books Protocols

Kinosita Jr., Kazuhiko

453

Hollow cathode cold atmospheric plasma source with monoatomic and molecular gases  

Science Journals Connector (OSTI)

Performance of the radio frequency (r.f.) hollow cathode at atmospheric pressure was tested for neon, argon, nitrogen and air. A non-equilibrium (cold) atmospheric plasma was generated in the gas flowing through the cathode. The electrode system was installed in a chamber open to ambient atmosphere. Two r.f. frequencies 13.56 and 27.12 \\{MHz\\} were compared. Similarly to the low pressure hollow cathodes the higher frequency was found to be more suitable for all tested gases, due to a lower minimum r.f. voltage and related power for ignition and sustaining a stable plasma. The fused hollow cathode (FHC) source produces a stable and uniform plasma over large area in monoatomic gases, suitable for surface treatment of temperature sensitive materials, for cleaning and surface activation applications. However, a substantial difference was found in discharge performance when using a molecular gas. An optimization of the impedance matching network enabled generation of a stable cold plasma at r.f. powers below 50 W in both air and nitrogen. Possibilities of a stable uniform air (or nitrogen) plasma generation over large areas by the FHC sources are discussed, too.

H Baránková; L Bárdoš

2003-01-01T23:59:59.000Z

454

An interchangeable-cathode vacuum arc plasma source David K. Olson,a  

E-Print Network (OSTI)

design based on metal vapor vacuum arc MeVVA concepts is employed as a plasma source for a study of a 7 using a boron-carbide disk as the cathode target. The design is simplified from typical designs with a proton beam. We create our 7 Be on the surface of a sample of enriched boron carbide. Because 7

Hart, Gus

455

Oxygen diffusion in solid oxide fuel cell cathode and electrolyte materials: mechanistic insights from atomistic simulations  

E-Print Network (OSTI)

Oxygen diffusion in solid oxide fuel cell cathode and electrolyte materials: mechanistic insights to drive fast ionic transport. 1. Introduction The interest in Solid Oxide Fuel Cell (SOFC) technology. Current targets of cost and durability necessitate solid oxide fuel cells to operate in the intermediate

Yildiz, Bilge

456

Cold-hollow-cathode arc discharge in crossed electric and magnetic fields  

Science Journals Connector (OSTI)

A crossed-field cold-hollow-cathode arc is stable at low working gas pressures...?2–10?1 Pa, magnetic-field-and gas-dependent arcing voltages of 20–50 V, and discharge currents of 20–200 A. This is ... produced o...

P. M. Schanin; N. N. Koval; Yu. Kh. Akhmadeev; S. V. Grigoriev

2004-05-01T23:59:59.000Z

457

Effect of current density on poisoning rate of Co-containing fuel cell cathodes by chromium  

Science Journals Connector (OSTI)

Variation of electrochemical performance of a La0.58Sr0.4Co0.2Fe0.8O3 (LSCF) cathode due to chromium gas-phase deposition has been studied at 800°C. The highest degradation rate is observed under open circuit con...

E. Yu. Konysheva

2014-07-01T23:59:59.000Z

458

Influence of NaCl on cathode performance of solid oxide fuel cells  

Science Journals Connector (OSTI)

Degradation induced by sodium chloride in air was...0.8Sr0.2)0.98MnO3(LSM) and La0.6Sr0.4Co0.2Fe0.8O3(LSCF) cathodes in solid oxide fuel cells(SOFC). Cell performance was measured by volatilizing NaCl to...2...fo...

Run-ru Liu; De-jun Wang; Jing Leng

2013-08-01T23:59:59.000Z

459

Supporting Information Power generation by packed-bed air-cathode microbial fuel cells  

E-Print Network (OSTI)

1 Supporting Information Power generation by packed-bed air-cathode microbial fuel cells Xiaoyuan b a State Key Joint Laboratory of Environment Simulation and Pollution Control, THU­ VEOLIA Informatics, China University of Mining and Technology, Xuzhou 221116, PR China * Corresponding author: E

460

Microstructural Characterization Using Orientational Imaging Microscopy of SOFC Cathodes Subjected to Thermal and Electrochemical Loads  

SciTech Connect

Cathodes in SOFCs consist of interconnecting and contacting two-phase interfaces and three-phase lines in a complex three-phase microstructure. Furthermore, the interfacial crystallography is dynamic and changes in response to thermal loads and to interfacial electrochemical polarizations. Owing to this inherent complexity, a complete and fundamental understanding of both the basic mechanisms of cathodic processes and their performance degradation has not been achieved. We have carried out quantitative orientational imaging microscopy (OIM) on button-cell geometry SOFCs containing porous cathodes of yttria-stabilized zirconia and lanthanum strontium manganese oxide. A series of cathodes, taken from cells subjected to both open-circuit and current-loaded fuel-cell conditions, were characterized with OIM to determine their microstructural and crystallographic properties as a function of thermal and electrochemical history. In this presentation we will discuss the results of these studies, focusing on the crystallographic nature of the statistically important two-phase interfaces and three-phase lines.

Cao, Y. (Carnegie Mellon University); Miller, H.M. (Carnegie Mellon University); Johnson, C.; Wilson, L.C.; Rohrer, G. (Carnegie Mellon University); Salvador, P. (Carnegie Mellon University)

2006-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "advanced anl cathode" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Understanding the Role of Different Conductive Polymers in Improving the Nanostructured Sulfur Cathode Performance  

E-Print Network (OSTI)

of obstacles, including poor cycle life, low Coulombic efficiency, and low active material utilization.5 Cathode Performance Weiyang Li, Qianfan Zhang, Guangyuan Zheng,§ Zhi Wei Seh, Hongbin Yao, and Yi Cui*,, Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United

Cui, Yi

462

Manganese-Containing Cathode-Active Materials for Lithium-Ion Batteries  

Science Journals Connector (OSTI)

Manganese, which has a Clarke number of 0.06%,1...is the tenth-most abundant element in the earth’s crust, and has been utilized as a cathode-active material for manganese, alkaline-manganese, and lithium ... , f...

Koichi Numata

2009-01-01T23:59:59.000Z

463

Short communication Mesoporous nitrogen-rich carbon materials as cathode catalysts in  

E-Print Network (OSTI)

Short communication Mesoporous nitrogen-rich carbon materials as cathode catalysts in microbial activity for ORR [7]. The procedures to make these materials have required several synthesis steps, long catalytic activity is thought to be due to production of nitrogen-containing carbon materials

464

Selection of Conductive Additives in Li-Ion Battery Cathodes A Numerical Study  

E-Print Network (OSTI)

- capacity LiNi1-xCoxO2 to lower cost LiNi1-xCoxO2. The addition of conductive additives to cathode materials significantly improve overall conductivity. Percolation was achieved for the volume fraction of active material particulate system. Neither surface nor bulk modifications of active-material particle conductivities seem

Sastry, Ann Marie

465

Ex situ testing method to characterize cathode catalyst degradation during start-up/shut-down -  

E-Print Network (OSTI)

Ex situ testing method to characterize cathode catalyst degradation during start in electrochemically active surface area. Furthermore, contributions from different processes leading to catalyst. Submitted: 15.12.2011 * Pres. address: SINTEF Materials and Chemistry, New Energy Solutions, Sem Sælandsvei

Pfeifer, Holger

466

Beam characterization of a lab bench cold cathode ultra-soft x-ray generator  

E-Print Network (OSTI)

-source. Keywords: Ultra-soft X-rays (USX), USX Cold cathode generator, Gafchromic dosimetry, Aluminium K line. 1 and cell transformation) [1]. USX, however,5 pose significant problems in dosimetry and experimental design References hal-00858423,version1-5Sep2013 Author manuscript, published in "Nuclear Instruments and Methods

Paris-Sud XI, Université de

467

Mitigating Voltage Fade in Cathode Materials by Improving the Atomic Level Uniformity of Elemental Distribution  

SciTech Connect

Li-rich and Mn-rich (LMR) layered structured materials are very promising cathodes for high-energy lithium-ion batteries. However, their fundamental structure and voltage fading mechanisms are far from being well understood. Here we report the first evidence on the reduced voltage and energy fade of LMR cathode by improving the atomic level spatial distribution of the chemical species. LMR cathode (Li[Li0.2Ni0.2M0.6]O2) prepared by co-precipitation and sol-gel methods are dominated by R-3m phase and show significant Ni-segregation at the surface of the particles. They exhibit large voltage-fade and fast capacity degradation. In contrast, LMR cathode prepared by hydrothermal assisted method is dominated by C2/m phase and minimal Ni-segregation. It also demonstrates much smaller voltage-fade and excellent capacity retention. The fundamental correlation between the atomic level spatial distribution of the chemical species and the functional stability of the materials found in this work also guide the design of other functional materials with enhanced stabilities.

Zheng, Jianming; Gu, Meng; Genc, Arda; Xiao, Jie; Xu, Pinghong; Chen, Xilin; Zhu, Zihua; Zhao, Wenbo; Pullan, Lee; Wang, Chong M.; Zhang, Jiguang

2014-04-07T23:59:59.000Z

468

Understanding structural defects in lithium-rich layered oxide cathodes Karalee A. Jarvis,a  

E-Print Network (OSTI)

the required amounts of lithium, manganese, and nickel acetates were added to this solution. The molar ratioUnderstanding structural defects in lithium-rich layered oxide cathodes Karalee A. Jarvis, Accepted 31st March 2012 DOI: 10.1039/c2jm30575e Planar defects in lithium-rich layered oxides were

Ferreira, Paulo J.

469

Growth and characterization of rare-earth monosulfides for cold cathode applications  

E-Print Network (OSTI)

of chalco- genides of the rare-earth elements.4,5 The possibility was analyzed theoretically basedGrowth and characterization of rare-earth monosulfides for cold cathode applications Y. Modukuru, J phonons at 261 284 and 100 92 cm 1 with LaS NdS , respectively. These rare-earth monosulfides offer

Boolchand, Punit

470

Portable power source based on air-hydrogen fuel cells with free-breathing cathodes  

Science Journals Connector (OSTI)

Portable power source based on air-hydrogen fuel cells (FCs) operating in a free-breathing cathode regime has been developed. At a volume of 100 cm3, the source has a power capacity of 8.5 W h and generates a pow...

S. A. Gurevich; E. I. Terukov; O. I. Kon’kov; A. A. Tomasov…

2011-05-01T23:59:59.000Z

471

Corrosion mechanisms in aqueous solutions containing dissolved H2S. Part 2: Mode! ofthe cathodic reactions.  

E-Print Network (OSTI)

) the expression of the current density for the reaction (3) was obtained after the determination of the Tafel potential, and bc.u,s is the cathodic Tafel slope equal to 145±10mV (!). 2 Governing equations The governing

Paris-Sud XI, Université de

472

Alkaline Microfluidic Hydrogen-Oxygen Fuel Cell as a Cathode Characterization Platform  

E-Print Network (OSTI)

Alkaline Microfluidic Hydrogen-Oxygen Fuel Cell as a Cathode Characterization Platform Fikile R of hydrogen H2 and oxygen O2 . Operating fuel cells in alkaline media, as opposed to acidic media, has on an alkaline microfluidic fuel cell for catalyst and electrode characterization. Its constantly refreshing

Kenis, Paul J. A.

473

Cathode and electrolyte materials for solid oxide fuel cells and ion transport membranes  

DOE Patents (OSTI)

Novel cathode, electrolyte and oxygen separation materials are disclosed that operate at intermediate temperatures for use in solid oxide fuel cells and ion transport membranes based on oxides with perovskite related structures and an ordered arrangement of A site cations. The materials have significantly faster oxygen kinetics than in corresponding disordered perovskites.

Jacobson, Allan J; Wang, Shuangyan; Kim, Gun Tae

2014-01-28T23:59:59.000Z

474

Carbonophosphates: A New Family of Cathode Materials for Li-Ion Batteries Identified Computationally  

E-Print Network (OSTI)

Carbonophosphates: A New Family of Cathode Materials for Li-Ion Batteries Identified ABSTRACT: The tremendous growth of Li-ion batteries into a wide variety of applications is setting new applications from portable electronics to electric vehicles. A critical element of a Li-ion battery is the Li

Ceder, Gerbrand

475

Field emission from strained carbon nanotubes on cathode substrate D. Roy Mahapatra a,  

E-Print Network (OSTI)

Field emission from strained carbon nanotubes on cathode substrate D. Roy Mahapatra a, *, N. Sinha, Waterloo, Ont. N2L3C5, Canada 1. Introduction Field emission from carbon nanotube (CNT) was first reported Available online 27 June 2008 Keywords: Field emission Current density Carbon nanotube Strain phonon A B

Melnik, Roderick

476

Vehicle Technologies Office Merit Review 2014: Studies on High Capacity Cathodes for Advanced Lithium-ion Systems  

Energy.gov (U.S. Department of Energy (DOE))

Presentation given by Oak Ridge National Laboratory at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about studies on high...

477

Session: CSP Advanced Systems -- Advanced Overview (Presentation)  

SciTech Connect

The project description is: (1) it supports crosscutting activities, e.g. advanced optical materials, that aren't tied to a single CSP technology and (2) it supports the 'incubation' of new concepts in preliminary stages of investigation.

Mehos, M.

2008-04-01T23:59:59.000Z

478

Polymer Electrolytes for Advanced Lithium Batteries  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

July-09 Improve cathode utilization in dry full cells. Accomplished by technology transfer to Seeo, Inc. Objectives *Synthesis of dry block copolymer electrolytes for...

479

Advanced Combustion, Emission Control, Health Impacts, and Fuels Merit Review and Peer Evaluation  

NLE Websites -- All DOE Office Websites (Extended Search)

06 06 a n n u a l p r o g r e s s r e p o r t L e s s d e p e n d e n c e o n f o r e i g n o i l t o d a y, a n d t r a n s i t i o n t o a p e t r o l e u m - f r e e , e m i s s i o n s - f r e e v e h i c l e t o m o r r o w . F r e e d o m C A r A n d V e h i C l e T e C h n o l o g i e s P r o g r A m AdvAnced combustion, emission controls, HeAltH impActs, And Fuels merit review And peer evAluAtion Department of Energy Washington, DC 20585 October 2006 Dear Colleague: This document summarizes the comments provided by the Review Panel for the FY 2006 Department of Energy (DOE) Advanced Combustion, Emission Controls, Health Impacts, and Fuels Merit Review and Peer Evaluation Meeting, the "ACE Review," held on May 15-18, 2006 at Argonne National Laboratory (ANL). The raw evaluations and comments of the panel were provided (with reviewers' names deleted) to the presenters in early June and were used by national laboratory

480

Advanced Recyclable Media System{reg_sign}. Innovative technology summary report  

SciTech Connect

The objective of the Large-Scale Demonstration Project (LSDP) is to select and demonstrate potentially beneficial technologies at the Argonne National Laboratory East`s (ANL) Chicago Pile-5 (CP-5) Research Reactor. The purpose of the LSDP is to demonstrate that using innovative and improved deactivation and decommissioning (D and D) technologies from various sources can result in significant benefits, such as decreased cost and increased health and safety, as compared with baseline D and D technologies. This report describes a demonstration of the Advanced Recyclable Media System{reg_sign} technology which was employed by Surface Technology Systems, Inc. to remove coatings from a concrete floor. This demonstration is part of the CP-5 LSDP sponsored by the US Department of Energy (DOE) Office of Science and Technology Deactivation and Decommissioning Focus Area (DDFA). The Advanced Recyclable Media System{reg_sign} (ARMS) technology is an open blast technology which uses a soft recyclable media. The patented ARMS Engineered Blast Media consists of a fiber-reinforced polymer matrix which can be manufactured in various grades of abrasiveness. The fiber media can be remade and/or reused up to 20 times and can clean almost any surface (e.g., metal, wood, concrete, lead) and geometry including corners and the inside of air ducts.

NONE

1998-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "advanced anl cathode" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Observation of radio frequency ring-shaped hollow cathode discharge plasma with MgO and Al electrodes for plasma processing  

SciTech Connect

Various high-density plasma sources have been proposed for plasma processing. Especially, the hollow cathode discharge is one of the powerful ones. In this work, radio-frequency (RF) driven ring-shaped hollow cathode discharges with high secondary-electron emission have been investigated, using an aluminum (Al) cathode, coated or not with magnesium oxide (MgO). The thickness of MgO thin film is approximately 200?nm. The RF discharge voltage for the coated cathode is almost the same as that for the uncoated one, in a wide range of Ar gas pressure, from 5.3 to 53.2?Pa. The results reveal that the plasma density has a peak at an Ar gas pressure of 10.6?Pa for both cathodes. The plasma density for the coated cathode is about 1.5–3 times higher than that for the uncoated one, at various gas pressures. To the contrary, the electron temperature for the coated cathode is lower than temperature obtained with the uncoated cathode, at various gas pressures. Radial profiles of electron saturation current, which is proportional to plasma flux, are also examined for a wide range of gas pressure. Radial profiles of electron temperature at various axial positions are almost uniform for both cathodes so that the diffusion process due to density gradient is dominant for plasma transport. The secondary electrons emitted from the coated cathode contribute to the improvement of the plasma flux radial profile obtained using the uncoated cathode.

Ohtsu, Yasunori, E-mail: ohtsuy@cc.saga-u.ac.jp; Matsumoto, Naoki [Department of Electrical and Electronic Engineering, Graduate School of Science and Engineering, Saga University, 1 Honjo-machi, Saga 840-8502 (Japan)

2014-05-15T23:59:59.000Z

482

APS Visitor Registration Form | Advanced Photon Source  

NLE Websites -- All DOE Office Websites (Extended Search)

APS Visitor Registration Form APS Visitor Registration Form To request access as a visitor who will not do hands-on work, please complete this form. For assistance, contact the APS User Office by phone at (630) 252-9090 or by email at apsuser@aps.anl.gov. Please request access directly by contacting the APS User Office by phone at (630) 252-9090 or by email at apsuser@aps.anl.gov. If you are concerned about sending your passport and visa information, leave those fields blank and fax a letter to (630) 252-9250. To Request APS Visitor Registration, please enter the following: * indicates required field First Name*: Middle Initial/Name*: Last Name*: Title: Organization*: Department: Address 1*: Address 2: City*: State*: Zip Code*: Country: Phone*: Fax: E-mail Address*: Gender*: Female

483

Recent advances in lithium–sulfur batteries  

Science Journals Connector (OSTI)

Abstract Lithium–sulfur (Li–S) batteries have attracted much attention lately because they have very high theoretical specific energy (2500 Wh kg?1), five times higher than that of the commercial LiCoO2/graphite batteries. As a result, they are strong contenders for next-generation energy storage in the areas of portable electronics, electric vehicles, and storage systems for renewable energy such as wind power and solar energy. However, poor cycling life and low capacity retention are main factors limiting their commercialization. To date, a large number of electrode and electrolyte materials to address these challenges have been investigated. In this review, we present the latest fundamental studies and technological development of various nanostructured cathode materials for Li–S batteries, including their preparation approaches, structure, morphology and battery performance. Furthermore, the development of other significant components of Li–S batteries including anodes, electrolytes, additives, binders and separators are also highlighted. Not only does the intention of our review article comprise the summary of recent advances in Li–S cells, but also we cover some of our proposals for engineering of Li–S cell configurations. These systematic discussion and proposed directions can enlighten ideas and offer avenues in the rational design of durable and high performance Li–S batteries in the near future.

Lin Chen; Leon L. Shaw

2014-01-01T23:59:59.000Z

484

Advanced Materials | ORNL  

NLE Websites -- All DOE Office Websites (Extended Search)

Research Areas Research Areas Research Highlights Facilities and Capabilities Science to Energy Solutions News & Awards Events and Conferences Supporting Organizations Directionally Solidified Materials Using high-temperature optical floating zone furnace to produce monocrystalline molybdenum alloy micro-pillars Home | Science & Discovery | Advanced Materials Advanced Materials | Advanced Materials SHARE ORNL has the nation's most comprehensive materials research program and is a world leader in research that supports the development of advanced materials for energy generation, storage, and use. We have core strengths in three main areas: materials synthesis, characterization, and theory. In other words, we discover and make new materials, we study their structure,

485

Advanced Concepts Breakout Group  

NLE Websites -- All DOE Office Websites (Extended Search)

Workshop Workshop Advanced Concepts Working Group Facilitator: John J. Petrovic Scribe: Sherry Marin Advanced Storage Techniques/ Approaches in Priority Order 1. Crystalline Nanoporous Materials (15) 2. Polymer Microspheres (12) Self-Assembled Nanocomposites (12) 3. Advanced Hydrides (11) Metals - Organic (11) 4. BN Nanotubes (5) Hydrogenated Amorphous Carbon (5) 5. Mesoporous materials (4) Bulk Amorphous Materials (BAMs) (4) 6. Iron Hydrolysis (3) 7. Nanosize powders (2) 8. Metallic Hydrogen (1) Hydride Alcoholysis (1) Overarching R&D Questions for All Advanced Materials * Maximum storage capacity - theoretical model * Energy balance / life cycle analysis * Hydrogen absorption / desorption kinetics * Preliminary cost analysis - potential for low cost, high

486

Institute for Advanced Studies  

NLE Websites -- All DOE Office Websites (Extended Search)

Institute for Advanced Studies Institute for Advanced Studies Institute for Advanced Studies NMC leverages the strengths of three research universities to build joint programs, develop strategic partnerships, provide common organization and facilities. Contact Leader TBD LANL Program Administrator Pam Hundley (505) 663-5453 Email Building regional partnerships in education, leveraging strengths of three research universities The Institute for Advanced Studies (IAS) works with the three New Mexico research universities (University of New Mexico, New Mexico Tech, and New Mexico State University) to develop research and educational collaborations and partnerships. To facilitate interactions between the universities and LANL, the three New Mexico schools established the New Mexico Consortium (NMC), a nonprofit

487

Advance Care Planning Safeguards  

Science Journals Connector (OSTI)

Regardless of which goals of advance care planning are featured, safeguards, as reviewed in my article and by...5 we inadvertently may be doing harm.

J. Andrew Billings MD

2012-11-01T23:59:59.000Z

488

Advanced Reciprocating Engine Systems  

Energy.gov (U.S. Department of Energy (DOE))

The Advanced Reciprocating Engine Systems (ARES) program is designed to promote separate but parallel engine development between the major stationary, gaseous fueled engine manufacturers in the...

489

Advanced Fuel Cycle Program  

NLE Websites -- All DOE Office Websites (Extended Search)

Working with INL Community Outreach Visitor Information Calendar of Events ATR National Scientific User Facility Center for Advanced Energy Studies Light Water Reactor...

490

Advances in Physical Chemistry  

NLE Websites -- All DOE Office Websites (Extended Search)

Hindawi Publishing Corporation Advances in Physical Chemistry Volume 2011, Article ID 907129, 18 pages doi:10.11552011907129 Review Article Contrast and Synergy between...

491

People | Advanced Photon Source  

NLE Websites -- All DOE Office Websites (Extended Search)

User Office Floor Coordinators Beamline Phones Sectors Directory Media Contact Rick Fenner (630) 252-5280 Webmaster Kelly Cunningham (630) 252-0619 Mailing Address Advanced...

492

Advances in photosynthesis  

Science Journals Connector (OSTI)

Advances in photosynthesis ... This article emphasizes the relation between photosynthetic chemistry and the molecular architecture of the photosynthetic center in plant cells. ...

Roderic B. Park

1962-01-01T23:59:59.000Z

493

Investigating Local Degradation and Thermal Stability of Charged Nickel-Based Cathode Materials through Real-Time Electron Microscopy  

Science Journals Connector (OSTI)

The cathode part was prepared from a mixed slurry of 90 wt % active material (NCA), 6 wt % conducting carbon, and 4 wt % poly(vinylidene difluoride) (PVDF) binder in N-methylpyrrolidone (NMP) solvent. ... The observed differences in thermal decomposition behavior can be caused by a number of factors, including kinetic effects that occur during initial charge or heating, inhomogeneous dispersion of active materials, conducting agents, and polymer binder in the mixed slurry of the cathode, and the degree of electrolyte impregnation into the cathode. ... Real-time TEM has been used to describe the thermal decomposition that occurs at the surface of LixNi0.8Co0.15Al0.05O2 cathodes. ...

Sooyeon Hwang; Seung Min Kim; Seong-Min Bak; Byung-Won Cho; Kyung Yoon Chung; Jeong Yong Lee; Wonyoung Chang; Eric A. Stach

2014-08-07T23:59:59.000Z

494

Resynthesis of LiCo1?xMnxO2 as a cathode material for lithium secondary batteries  

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A recycling process involving chemical, mechanical, and electrochemical steps has been applied to recover cobalt from spent lithium ion batteries and resynthesize cathode active materials. LiCo1?xMnxO2...powders ...

Soo-Kyung Kim; Dong-Hyo Yang; Jeong-Soo Sohn…

2012-04-01T23:59:59.000Z

495

Effects of different particle sizes on electrochemical performance of spinel LiMn2O4 cathode materials  

Science Journals Connector (OSTI)

For the preparation of cathode sheets, a slurry was formed by mixing the active material (85%), acetylene black (10%)...N...-methyl-2-pyrrolidone, NMP). The mixed slurry was coated onto an aluminum current collec...

Ting-Feng Yi; Xin-Guo Hu; Chang-Song Dai; Kun Gao

2007-06-01T23:59:59.000Z

496

Platinum-Alloy Cathode Catalyst Degradation in Proton Exchange Membrane Fuel Cells: Nanometer-Scale Compositional and Morphological Changes  

E-Print Network (OSTI)

Electrochemical measurements showed an ?75% Pt surface area loss and an ?40% specific activity loss for a membrane electrode assembly (MEA) cathode with acid-treated “Pt[subscript 3]Co ” catalyst particles in a H[subscript ...

Chen, Shuo

497

Thermal processes in the systems with Li-battery cathode materials and LiPF6 -based organic solutions  

Science Journals Connector (OSTI)

Thermodynamic instability of positive electrodes (cathodes) in Li-ion batteries in humid air and battery solutions results in capacity fading and batteries degradation, especially at elevated temperatures. In thi...

Ortal Haik; Francis Susai Amalraj…

2014-08-01T23:59:59.000Z

498

Optimization of the Cathode Catalyst Layer Composition of a PEM Fuel Cell Using a Novel 2-Step Preparation Method  

E-Print Network (OSTI)

For good performance and high durability PEM fuel cells run at high water saturation levels. However, excess liquid water generated by the oxygen reduction reaction at the cathode can block pores in the catalyst layer so ...

Friedmann, Roland

2009-03-05T23:59:59.000Z

499

A Plasma-Cathode Electron Source for Focused-Beam Generation in the Fore-Pump Pressure Range  

Science Journals Connector (OSTI)

A plasma electron source is described that forms a focused beam ... is generated in a hollow-cathode discharge. Electrons are extracted through a single emission hole in the anode. The source provides an electron

V. A. Burdovitsin; I. S. Zhirkov; E. M. Oks…

500

High-Rate Cathodes Based on Li3V2(PO4)3 Nanobelts Prepared via...  

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Cathodes Based on Li3V2(PO4)3 Nanobelts Prepared via Surfactant-Assisted Fabrication. Abstract: In this work, we synthesized monoclinic Li3V2(PO4)3 nanobelts via a single-step,...