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Sample records for fuel cells electrodes

  1. Fuel cell oxygen electrode

    DOEpatents

    Shanks, H.R.; Bevolo, A.J.; Danielson, G.C.; Weber, M.F.

    An oxygen electrode for a fuel cell utilizing an acid electrolyte has a substrate of an alkali metal tungsten bronze of the formula: A/sub x/WO/sub 3/ where A is an alkali metal and x is at least 0.2, which is covered with a thin layer of platinum tungsten bronze of the formula: Pt/sub y/WO/sub 3/ where y is at least 0.8.

  2. Fuel cell oxygen electrode

    DOEpatents

    Shanks, Howard R.; Bevolo, Albert J.; Danielson, Gordon C.; Weber, Michael F.

    1980-11-04

    An oxygen electrode for a fuel cell utilizing an acid electrolyte has a substrate of an alkali metal tungsten bronze of the formula: A.sub.x WO.sub.3 where A is an alkali metal and x is at least 0.2, which is covered with a thin layer of platinum tungsten bronze of the formula: Pt.sub.y WO.sub.3 where y is at least 0.8.

  3. Durable Fuel Cell Membrane Electrode Assembly (MEA)

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Durable Fuel Cell Membrane Electrode Assembly (MEA) Durable Fuel Cell Membrane Electrode Assembly (MEA) A revolutionary method of building a membrane electrode assembly (MEA) for...

  4. Fuel cell electrodes

    DOEpatents

    Strmcnik, Dusan; Cuesta, Angel; Stamenkovic, Vojislav; Markovic, Nenad

    2015-06-23

    A process includes patterning a surface of a platinum group metal-based electrode by contacting the electrode with an adsorbate to form a patterned platinum group metal-based electrode including platinum group metal sites blocked with adsorbate molecules and platinum group metal sites which are not blocked.

  5. Solid Oxide Fuel Cell Technologies: Improved Electrode-Electrode...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Solid Oxide Fuel Cell Technologies: Improved Electrode-Electrode Structures for Solid State Electrochemical Devices Lawrence Berkeley National Laboratory Contact LBL About This ...

  6. Sintered electrode for solid oxide fuel cells

    DOEpatents

    Ruka, Roswell J.; Warner, Kathryn A.

    1999-01-01

    A solid oxide fuel cell fuel electrode is produced by a sintering process. An underlayer is applied to the electrolyte of a solid oxide fuel cell in the form of a slurry, which is then dried. An overlayer is applied to the underlayer and then dried. The dried underlayer and overlayer are then sintered to form a fuel electrode. Both the underlayer and the overlayer comprise a combination of electrode metal such as nickel, and stabilized zirconia such as yttria-stabilized zirconia, with the overlayer comprising a greater percentage of electrode metal. The use of more stabilized zirconia in the underlayer provides good adhesion to the electrolyte of the fuel cell, while the use of more electrode metal in the overlayer provides good electrical conductivity. The sintered fuel electrode is less expensive to produce compared with conventional electrodes made by electrochemical vapor deposition processes. The sintered electrodes exhibit favorable performance characteristics, including good porosity, adhesion, electrical conductivity and freedom from degradation.

  7. Sintered electrode for solid oxide fuel cells

    DOEpatents

    Ruka, R.J.; Warner, K.A.

    1999-06-01

    A solid oxide fuel cell fuel electrode is produced by a sintering process. An underlayer is applied to the electrolyte of a solid oxide fuel cell in the form of a slurry, which is then dried. An overlayer is applied to the underlayer and then dried. The dried underlayer and overlayer are then sintered to form a fuel electrode. Both the underlayer and the overlayer comprise a combination of electrode metal such as nickel, and stabilized zirconia such as yttria-stabilized zirconia, with the overlayer comprising a greater percentage of electrode metal. The use of more stabilized zirconia in the underlayer provides good adhesion to the electrolyte of the fuel cell, while the use of more electrode metal in the overlayer provides good electrical conductivity. The sintered fuel electrode is less expensive to produce compared with conventional electrodes made by electrochemical vapor deposition processes. The sintered electrodes exhibit favorable performance characteristics, including good porosity, adhesion, electrical conductivity and freedom from degradation. 4 figs.

  8. Electrode for molten carbonate fuel cell

    DOEpatents

    Iacovangelo, Charles D.; Zarnoch, Kenneth P.

    1983-01-01

    A sintered porous electrode useful for a molten carbonate fuel cell is produced which is composed of a plurality of 5 wt. % to 95 wt. % nickel balance copper alloy encapsulated ceramic particles sintered together by the alloy.

  9. Fuel cell electrode and method of preparation

    DOEpatents

    Kaun, T.D

    1984-03-02

    A fuel cell having good resistance to compressive creep includes electrodes having a superstructure of porous electrically conductive foam with surface sections adjacent to opposing surfaces of an electrolyte matrix impregnated with electrode catalyst materials. The catalyst materials are affixed in sections contiguous to an inner major surface by sinter bonding, electrochemical bonding or restrictive interstitial spacing. The outer sections of the porous plaque thickness are reserved for gas distribution to the electrode catalyst. Oxidant and fuel gases can be separately manifolded into alternate sides of a fuel cell stack by sealing opposing edges of the porous plaques containing the anode material in one set of opposing side surfaces and sealing opposing edges of the porous plaque containing cathode material in alternate side surfaces of the stack.

  10. Nanostructured Solid Oxide Fuel Cell Electrodes

    SciTech Connect

    Sholklapper, Tal Zvi

    2007-12-15

    The ability of Solid Oxide Fuel Cells (SOFC) to directly and efficiently convert the chemical energy in hydrocarbon fuels to electricity places the technology in a unique and exciting position to play a significant role in the clean energy revolution. In order to make SOFC technology cost competitive with existing technologies, the operating temperatures have been decreased to the range where costly ceramic components may be substituted with inexpensive metal components within the cell and stack design. However, a number of issues have arisen due to this decrease in temperature: decreased electrolyte ionic conductivity, cathode reaction rate limitations, and a decrease in anode contaminant tolerance. While the decrease in electrolyte ionic conductivities has been countered by decreasing the electrolyte thickness, the electrode limitations have remained a more difficult problem. Nanostructuring SOFC electrodes addresses the major electrode issues. The infiltration method used in this dissertation to produce nanostructure SOFC electrodes creates a connected network of nanoparticles; since the method allows for the incorporation of the nanoparticles after electrode backbone formation, previously incompatible advanced electrocatalysts can be infiltrated providing electronic conductivity and electrocatalysis within well-formed electrolyte backbones. Furthermore, the method is used to significantly enhance the conventional electrode design by adding secondary electrocatalysts. Performance enhancement and improved anode contamination tolerance are demonstrated in each of the electrodes. Additionally, cell processing and the infiltration method developed in conjunction with this dissertation are reviewed.

  11. Fuel cell generator with fuel electrodes that control on-cell fuel reformation

    DOEpatents

    Ruka, Roswell J.; Basel, Richard A.; Zhang, Gong

    2011-10-25

    A fuel cell for a fuel cell generator including a housing including a gas flow path for receiving a fuel from a fuel source and directing the fuel across the fuel cell. The fuel cell includes an elongate member including opposing first and second ends and defining an interior cathode portion and an exterior anode portion. The interior cathode portion includes an electrode in contact with an oxidant flow path. The exterior anode portion includes an electrode in contact with the fuel in the gas flow path. The anode portion includes a catalyst material for effecting fuel reformation along the fuel cell between the opposing ends. A fuel reformation control layer is applied over the catalyst material for reducing a rate of fuel reformation on the fuel cell. The control layer effects a variable reformation rate along the length of the fuel cell.

  12. Advanced membrane electrode assemblies for fuel cells

    SciTech Connect

    Kim, Yu Seung; Pivovar, Bryan S

    2014-02-25

    A method of preparing advanced membrane electrode assemblies (MEA) for use in fuel cells. A base polymer is selected for a base membrane. An electrode composition is selected to optimize properties exhibited by the membrane electrode assembly based on the selection of the base polymer. A property-tuning coating layer composition is selected based on compatibility with the base polymer and the electrode composition. A solvent is selected based on the interaction of the solvent with the base polymer and the property-tuning coating layer composition. The MEA is assembled by preparing the base membrane and then applying the property-tuning coating layer to form a composite membrane. Finally, a catalyst is applied to the composite membrane.

  13. Advanced membrane electrode assemblies for fuel cells

    DOEpatents

    Kim, Yu Seung; Pivovar, Bryan S.

    2012-07-24

    A method of preparing advanced membrane electrode assemblies (MEA) for use in fuel cells. A base polymer is selected for a base membrane. An electrode composition is selected to optimize properties exhibited by the membrane electrode assembly based on the selection of the base polymer. A property-tuning coating layer composition is selected based on compatibility with the base polymer and the electrode composition. A solvent is selected based on the interaction of the solvent with the base polymer and the property-tuning coating layer composition. The MEA is assembled by preparing the base membrane and then applying the property-tuning coating layer to form a composite membrane. Finally, a catalyst is applied to the composite membrane.

  14. Fuel cell having dual electrode anode or cathode

    DOEpatents

    Findl, Eugene

    1985-01-01

    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.

  15. Fuel cell having dual electrode anode or cathode

    DOEpatents

    Findl, E.

    1984-04-10

    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.

  16. Method of depositing a catalyst on a fuel cell electrode

    DOEpatents

    Dearnaley, Geoffrey; Arps, James H.

    2000-01-01

    Fuel cell electrodes comprising a minimal load of catalyst having maximum catalytic activity and a method of forming such fuel cell electrodes. The method comprises vaporizing a catalyst, preferably platinum, in a vacuum to form a catalyst vapor. A catalytically effective amount of the catalyst vapor is deposited onto a carbon catalyst support on the fuel cell electrode. The electrode preferably is carbon cloth. The method reduces the amount of catalyst needed for a high performance fuel cell electrode to about 0.3 mg/cm.sup.2 or less.

  17. Gas Diffusion Electrodes for Fuel Cells - Energy Innovation Portal

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Vehicles and Fuels Vehicles and Fuels Hydrogen and Fuel Cell Hydrogen and Fuel Cell Advanced Materials Advanced Materials Find More Like This Return to Search Gas Diffusion Electrodes for Fuel Cells Sandia National Laboratories Contact SNL About This Technology Publications: PDF Document Publication Market Sheet (778 KB) Technology Marketing SummaryA unique gas diffusion electrode technique resulting in little to no leftover methanol, therefore increasing the overall effectiveness and

  18. Durable Fuel Cell Membrane Electrode Assembly (MEA) - Energy...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Durable Fuel Cell Membrane Electrode Assembly (MEA) Los Alamos National Laboratory Contact ... The pt loading was 0.2 and 0.4 mgcm2. Technology Marketing SummaryThe membrane electrode ...

  19. Electrode electrolyte interlayers containing cerium oxide for electrochemical fuel cells

    DOEpatents

    Borglum, Brian P.; Bessette, Norman F.

    2000-01-01

    An electrochemical cell is made having a porous fuel electrode (16) and a porous air electrode (13), with solid oxide electrolyte (15) therebetween, where the air electrode surface opposing the electrolyte has a separate, attached, dense, continuous layer (14) of a material containing cerium oxide, and where electrolyte (16) contacts the continuous oxide layer (14), without contacting the air electrode (13).

  20. Method of improving fuel cell performance by removing at least one metal oxide contaminant from a fuel cell electrode

    DOEpatents

    Kim, Yu Seung; Choi, Jong-Ho; Zelenay, Piotr

    2009-08-18

    A method of removing contaminants from a fuel cell catalyst electrode. The method includes providing a getter electrode and a fuel cell catalyst electrode having at least one contaminant to a bath and applying a voltage sufficient to drive the contaminant from the fuel cell catalyst electrode to the getter electrode. Methods of removing contaminants from a membrane electrode assembly of a fuel cell and of improving performance of a fuel cell are also provided.

  1. Fuel cell electrode interconnect contact material encapsulation and method

    DOEpatents

    Derose, Anthony J.; Haltiner, Jr., Karl J.; Gudyka, Russell A.; Bonadies, Joseph V.; Silvis, Thomas W.

    2016-05-31

    A fuel cell stack includes a plurality of fuel cell cassettes each including a fuel cell with an anode and a cathode. Each fuel cell cassette also includes an electrode interconnect adjacent to the anode or the cathode for providing electrical communication between an adjacent fuel cell cassette and the anode or the cathode. The interconnect includes a plurality of electrode interconnect protrusions defining a flow passage along the anode or the cathode for communicating oxidant or fuel to the anode or the cathode. An electrically conductive material is disposed between at least one of the electrode interconnect protrusions and the anode or the cathode in order to provide a stable electrical contact between the electrode interconnect and the anode or cathode. An encapsulating arrangement segregates the electrically conductive material from the flow passage thereby, preventing volatilization of the electrically conductive material in use of the fuel cell stack.

  2. Electrode Performance in Reversible Solid Oxide Fuel Cells

    SciTech Connect

    Marina, Olga A.; Pederson, Larry R.; Williams, Mark C.; Coffey, Greg W.; Meinhardt, Kerry D.; Nguyen, Carolyn D.; Thomsen, Ed C.

    2007-03-22

    The performance of several negative (fuel) and positive (air) electrode compositions for use in reversible solid oxide fuel cells (SOFC) that are capable of operating both as a fuel cell and as an electrolyzer was investigated in half-cell and full-cell tests. Negative electrode compositions studied were a nickel/zirconia cermet (Ni/YSZ) and lanthanum-substituted strontium titanate/ceria composite, whereas positive electrode compositions examined included mixed ion and electron-conducting lanthanum strontium ferrite (LSF), lanthanum strontium copper ferrite (LSCuF), lanthanum strontium cobalt ferrite (LSCoF), and lanthanum strontium manganite (LSM). While titanate/ceria and Ni/YSZ electrodes performed similarly in the fuel cell mode in half-cell tests, losses associated with electrolysis were lower for the titanate/ceria electrode. Positive electrodes all gave higher losses in the electrolysis mode when compared to the fuel cell mode. This behavior was most apparent for mixed-conducting LSF, LSCuF, and LSCoF electrodes, and discernible but smaller for LSM; observations are consistent with expected trends in the interfacial oxygen vacancy concentration under anodic and cathodic polarization. Full-cell tests conducted for cells with a thin electrolyte (7 um YSZ) similarly showed higher polarization losses in the electrolysis than fuel cell direction.

  3. Fuel cell with Pt/Pd electrocatalyst electrode

    DOEpatents

    Stonehart, Paul

    1983-01-01

    An electrode for use in a phosphoric acid fuel cell comprising a graphitized or partially graphitized carbon support having a platinum/palladium electrocatalyst thereon. Preferably, the platinum/palladium catalyst comprises 20 to 65 weight percent palladium.

  4. Fuel electrode containing pre-sintered nickel/zirconia for a solid oxide fuel cell

    DOEpatents

    Ruka, Roswell J.; Vora, Shailesh D.

    2001-01-01

    A fuel cell structure (2) is provided, having a pre-sintered nickel-zirconia fuel electrode (6) and an air electrode (4), with a ceramic electrolyte (5) disposed between the electrodes, where the pre-sintered fuel electrode (6) contains particles selected from the group consisting of nickel oxide, cobalt and cerium dioxide particles and mixtures thereof, and titanium dioxide particles, within a matrix of yttria-stabilized zirconia and spaced-apart filamentary nickel strings having a chain structure, and where the fuel electrode can be sintered to provide an active solid oxide fuel cell.

  5. Core-Shell Fuel Cell Electrodes - Energy Innovation Portal

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Core-Shell Fuel Cell Electrodes Brookhaven National Laboratory Contact BNL About This Technology Artists rendition of the arrangement of platinum atoms in common use (left) and in the inventive scheme (right).<br type="_moz" /> Artists rendition of the arrangement of platinum atoms in common use (left) and in the inventive scheme (right). Technology Marketing Summary Platinum is the best catalyst for the oxygen reduction reaction, the limiting reaction in fuel cells. It is also

  6. Oxygen electrode reaction in molten carbonate fuel cells

    SciTech Connect

    Appleby, A.J.; White, R.E.

    1992-07-07

    Molten carbonate fuel cell system is a leading candidate for the utility power generation because of its high efficiency for fuel to AC power conversion, capability for an internal reforming, and a very low environmental impact. However, the performance of the molten carbonate fuel cell is limited by the oxygen reduction reaction and the cell life time is limited by the stability of the cathode material. An elucidation of oxygen reduction reaction in molten alkali carbonate is essential because overpotential losses in the molten carbonate fuel cell are considerably greater at the oxygen cathode than at the fuel anode. Oxygen reduction on a fully-immersed gold electrode in a lithium carbonate melt was investigated by electrochemical impedance spectroscopy and cyclic voltammetry to determine electrode kinetic and mass transfer parameters. The dependences of electrode kinetic and mass transfer parameters on gas composition and temperature were examined to determine the reaction orders and the activation energies. The results showed that oxygen reduction in a pure lithium carbonate melt occurs via the peroxide mechanism. A mass transfer parameter, D{sub O}{sup 1/2}C{sub O}, estimated by the cyclic voltammetry concurred with that calculated by the EIS technique. The temperature dependence of the exchange current density and the product D{sub O}{sup 1/2}C{sub O} were examined and the apparent activation energies were determined to be about 122 and 175 kJ/ mol, respectively.

  7. High temperature solid electrolyte fuel cell with ceramic electrodes

    DOEpatents

    Marchant, David D.; Bates, J. Lambert

    1984-01-01

    A solid oxide electrolyte fuel cell is described having a central electrolyte comprised of a HfO.sub.2 or ZrO.sub.2 ceramic stabilized and rendered ionically conductive by the addition of Ca, Mg, Y, La, Nd, Sm, Gd, Dy Er, or Yb. The electrolyte is sandwiched between porous electrodes of a HfO.sub.2 or ZrO.sub.2 ceramic stabilized by the addition of a rare earth and rendered electronically conductive by the addition of In.sub.2 O.sub.3. Alternatively, the anode electrode may be made of a metal such as Co, Ni, Ir Pt, or Pd.

  8. High temperature solid electrolyte fuel cell with ceramic electrodes

    DOEpatents

    Bates, J.L.; Marchant, D.D.

    A solid oxide electrolyte fuel cell is described having a central electrolyte comprised of a HfO/sub 2/ or ZrO/sub 2/ ceramic stabilized and rendered ionically conductive by the addition of Ca, Mg, Y, La, Nd, Sm, Gd, Dy Er, or Yb. The electrolyte is sandwiched between porous electrodes of a HfO/sub 2/ or ZrO/sub 2/ ceramic stabilized by the addition of a rare earth and rendered electronically conductive by the addition of In/sub 2/O/sub 3/. Alternatively, the anode electrode may be made of a metal such as Co, Ni, Ir Pt, or Pd.

  9. Fabrication of catalytic electrodes for molten carbonate fuel cells

    DOEpatents

    Smith, James L.

    1988-01-01

    A porous layer of catalyst material suitable for use as an electrode in a molten carbonate fuel cell includes elongated pores substantially extending across the layer thickness. The catalyst layer is prepared by depositing particulate catalyst material into polymeric flocking on a substrate surface by a procedure such as tape casting. The loaded substrate is heated in a series of steps with rising temperatures to set the tape, thermally decompose the substrate with flocking and sinter bond the catalyst particles into a porous catalytic layer with elongated pores across its thickness. Employed as an electrode, the elongated pores provide distribution of reactant gas into contact with catalyst particles wetted by molten electrolyte.

  10. Air electrode composition for solid oxide fuel cell

    DOEpatents

    Kuo, Lewis; Ruka, Roswell J.; Singhal, Subhash C.

    1999-01-01

    An air electrode composition for a solid oxide fuel cell is disclosed. The air electrode material is based on lanthanum manganite having a perovskite-like crystal structure ABO.sub.3. The A-site of the air electrode composition comprises a mixed lanthanide in combination with rare earth and alkaline earth dopants. The B-site of the composition comprises Mn in combination with dopants such as Mg, Al, Cr and Ni. The mixed lanthanide comprises La, Ce, Pr and, optionally, Nd. The rare earth A-site dopants preferably comprise La, Nd or a combination thereof, while the alkaline earth A-site dopant preferably comprises Ca. The use of a mixed lanthanide substantially reduces raw material costs in comparison with compositions made from high purity lanthanum starting materials. The amount of the A-site and B-site dopants is controlled in order to provide an air electrode composition having a coefficient of thermal expansion which closely matches that of the other components of the solid oxide fuel cell.

  11. Air electrode composition for solid oxide fuel cell

    DOEpatents

    Kuo, L.; Ruka, R.J.; Singhal, S.C.

    1999-08-03

    An air electrode composition for a solid oxide fuel cell is disclosed. The air electrode material is based on lanthanum manganite having a perovskite-like crystal structure ABO{sub 3}. The A-site of the air electrode composition comprises a mixed lanthanide in combination with rare earth and alkaline earth dopants. The B-site of the composition comprises Mn in combination with dopants such as Mg, Al, Cr and Ni. The mixed lanthanide comprises La, Ce, Pr and, optionally, Nd. The rare earth A-site dopants preferably comprise La, Nd or a combination thereof, while the alkaline earth A-site dopant preferably comprises Ca. The use of a mixed lanthanide substantially reduces raw material costs in comparison with compositions made from high purity lanthanum starting materials. The amount of the A-site and B-site dopants is controlled in order to provide an air electrode composition having a coefficient of thermal expansion which closely matches that of the other components of the solid oxide fuel cell. 3 figs.

  12. Low circumferential voltage gradient self supporting electrode for solid oxide fuel cells

    DOEpatents

    Reichner, Philip

    1989-01-01

    The porous, self-supporting, elongated electrode is made, having at least two chambers through its axial length, the chambers separated by an electronically conductive member. This electrode can be an air electrode of a fuel cell, having a superimposed solid electrolyte and fuel electrode.

  13. Fabrication of fuel cell electrodes and other catalytic structures

    DOEpatents

    Smith, J.L.

    1987-02-11

    A porous layer of catalyst material suitable for use as an electrode in a molten carbonate fuel cell includes elongated pores substantially extending across the layer thickness. The catalyst layer is prepared by depositing particulate catalyst material into polymeric flocking on a substrate surface by a procedure such as tape casting. The loaded substrate is heated in a series of steps with rising temperatures to set the tape, thermally decompose the substrate with flocking and sinter bond the catalyst particles into a porous catalytic layer with elongated pores across its thickness. Employed as an electrode, the elongated pores provide distribution of reactant gas into contact with catalyst particles wetted by molten electrolyte. 1 fig.

  14. Automated catalyst processing for cloud electrode fabrication for fuel cells

    DOEpatents

    Goller, Glen J.; Breault, Richard D.

    1980-01-01

    A process for making dry carbon/polytetrafluoroethylene floc material, particularly useful in the manufacture of fuel cell electrodes, comprises of the steps of floccing a co-suspension of carbon particles and polytetrafluoroethylene particles, filtering excess liquids from the co-suspension, molding pellet shapes from the remaining wet floc solids without using significant pressure during the molding, drying the wet floc pellet shapes within the mold at temperatures no greater than about 150.degree. F., and removing the dry pellets from the mold.

  15. Synthesis and Stability of a Nanoparticle-Infiltrated Solid OxideFuel Cell Electrode

    SciTech Connect

    Sholklapper, Tal Z.; Radmilovic, Velimir; Jacobson, Craig P.; Visco, Steven J.; De Jonghe, Lutgard C.

    2006-11-20

    Nanoparticulate catalysts infiltrated into SOFC (Solid OxideFUel Cell) electrodes can significantly enhance the cell performance, butthe stability of these electrodes has been an open issue. An infiltrationprocedure is reported that leads to a stable scandia-stablized zirconia(SSZ) cathode electrode performance.

  16. Battery and fuel cell electrodes containing stainless steel charging additive

    DOEpatents

    Zuckerbrod, David; Gibney, Ann

    1984-01-01

    An electrode for use in electrochemical energy cells is made, comprising a hydrophilic layer and a hydrophobic layer, where the hydrophilic layer comprises a hydrophilic composite which includes: (i) carbon particles; (ii) stainless steel particles; (iii) a nonwetting agent; and (iv) a catalyst, where at least one current collector contacts said composite.

  17. Method of preparing a dimensionally stable electrode for use in a molten carbonate fuel cell

    DOEpatents

    Swarr, T.E.; Wnuck, W.G.

    1986-01-29

    A method is disclosed for preparing a dimensionally stable electrode structure, particularly nickel-chromium anodes, for use in a molten carbonate fuel cell stack. A low-chromium to nickel alloy is provided and oxidized in a mildly oxidizing gas of sufficient oxidation potential to oxidize chromium in the alloy structure. Typically, a steam/H/sub 2/ gas mixture in a ratio of about 100/1 and at a temperature below 800/sup 0/C is used as the oxidizing medium. This method permits the use of less than 5 wt % chromium in nickel alloy electrodes while obtaining good resistance to creep in the electrodes of a fuel cell stack.

  18. Copper-substituted perovskite compositions for solid oxide fuel cell cathodes and oxygen reduction electrodes in other electrochemical devices

    DOEpatents

    Rieke, Peter C.; Coffey, Gregory W.; Pederson, Larry R.; Marina, Olga A.; Hardy, John S.; Singh, Prabhaker; Thomsen, Edwin C.

    2010-07-20

    The present invention provides novel compositions that find advantageous use in making electrodes for electrochemical cells. Also provided are electrochemical devices that include active oxygen reduction electrodes, such as solid oxide fuel cells, sensors, pumps and the like. The compositions comprises a copper-substituted ferrite perovskite material. The invention also provides novel methods for making and using the electrode compositions and solid oxide fuel cells and solid oxide fuel cell assemblies having cathodes comprising the compositions.

  19. Method for sintering fuel cell electrodes using a carrier

    DOEpatents

    Donelson, Richard; Bryson, E. S.

    1995-01-01

    A carrier for conveying components of a fuel cell to be sintered through a sintering furnace. The carrier comprises a metal sheet coated with a carbon-based paint, the carbon-based paint comprising an organic binder. The carbon-based paint may be an alcohol or a solvent-based paint or a water-based paint.

  20. Method for sintering fuel cell electrodes using a carrier

    DOEpatents

    Donelson, R.; Bryson, E.S.

    1995-03-28

    A carrier is described for conveying components of a fuel cell to be sintered through a sintering furnace. The carrier comprises a metal sheet coated with a carbon-based paint, the carbon-based paint comprising an organic binder. The carbon-based paint may be an alcohol or a solvent-based paint or a water-based paint.

  1. Coated metal sintering carriers for fuel cell electrodes

    DOEpatents

    Donelson, Richard (Glen Waverly, AU); Bryson, E. S. (Downers Grove, IL)

    1998-01-01

    A carrier for conveying components of a fuel cell to be sintered through a sintering furnace. The carrier comprises a metal sheet coated with a water-based carbon paint, the water-based carbon paint comprising water, powdered graphite, an organic binder, a wetting agent, a dispersing agent and a defoaming agent.

  2. Coated metal sintering carriers for fuel cell electrodes

    DOEpatents

    Donelson, R.; Bryson, E.S.

    1998-11-10

    A carrier is described for conveying components of a fuel cell to be sintered through a sintering furnace. The carrier comprises a metal sheet coated with a water-based carbon paint, the water-based carbon paint comprising water, powdered graphite, an organic binder, a wetting agent, a dispersing agent and a defoaming agent.

  3. Optimization design of electrodes for anode-supported solid oxide fuel cells via genetic algorithm

    SciTech Connect

    Shi, J.; Xue, X.

    2011-01-01

    Porous electrode is the critical component of solid-oxide fuel cells (SOFCs) and provides a functional material backbone for multi-physicochemical processes. Model based electrode designs could significantly improve SOFC performance. This task is usually performed via parameter studies for simple case and assumed property distributions for graded electrodes. When nonlinearly coupled multiparameters of electrodes are considered, it could be very difficult for the model based parameter study method to effectively and systematically search the design space. In this research, the optimization approach with a genetic algorithm is demonstrated for this purpose. An anode-supported proton conducting SOFC integrated with a fuel supply system is utilized as a physical base for the model development and the optimization design. The optimization results are presented, which are difficult to obtain for parametric study method.

  4. Simplified process for leaching precious metals from fuel cell membrane electrode assemblies

    DOEpatents

    Shore, Lawrence; Matlin, Ramail

    2009-12-22

    The membrane electrode assemblies of fuel cells are recycled to recover the catalyst precious metals from the assemblies. The assemblies are cryogenically embrittled and pulverized to form a powder. The pulverized assemblies are then mixed with a surfactant to form a paste which is contacted with an acid solution to leach precious metals from the pulverized membranes.

  5. Oxygen electrode reaction in molten carbonate fuel cells. Final report, September 15, 1987--September 14, 1990

    SciTech Connect

    Appleby, A.J.; White, R.E.

    1992-07-07

    Molten carbonate fuel cell system is a leading candidate for the utility power generation because of its high efficiency for fuel to AC power conversion, capability for an internal reforming, and a very low environmental impact. However, the performance of the molten carbonate fuel cell is limited by the oxygen reduction reaction and the cell life time is limited by the stability of the cathode material. An elucidation of oxygen reduction reaction in molten alkali carbonate is essential because overpotential losses in the molten carbonate fuel cell are considerably greater at the oxygen cathode than at the fuel anode. Oxygen reduction on a fully-immersed gold electrode in a lithium carbonate melt was investigated by electrochemical impedance spectroscopy and cyclic voltammetry to determine electrode kinetic and mass transfer parameters. The dependences of electrode kinetic and mass transfer parameters on gas composition and temperature were examined to determine the reaction orders and the activation energies. The results showed that oxygen reduction in a pure lithium carbonate melt occurs via the peroxide mechanism. A mass transfer parameter, D{sub O}{sup 1/2}C{sub O}, estimated by the cyclic voltammetry concurred with that calculated by the EIS technique. The temperature dependence of the exchange current density and the product D{sub O}{sup 1/2}C{sub O} were examined and the apparent activation energies were determined to be about 122 and 175 kJ/ mol, respectively.

  6. Modified cermet fuel electrodes for solid oxide electrochemical cells

    DOEpatents

    Ruka, Roswell J.; Spengler, Charles J.

    1991-01-01

    An exterior porous electrode (10), bonded to a solid oxygen ion conducting electrolyte (13) which is in contact with an interior electrode (14), contains coarse metal particles (12) of nickel and/or cobalt, having diameters from 3 micrometers to 35 micrometers, where the coarse particles are coated with a separate, porous, multiphase layer (17) containing fine metal particles of nickel and/or cobalt (18), having diameters from 0.05 micrometers to 1.75 micrometers and conductive oxide (19) selected from cerium oxide, doped cerium oxide, strontium titanate, doped strontium titanate and mixtures thereof.

  7. Improving Fuel Cell Electrodes Two-Steps at a Time > Research Highlights >

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Research > The Energy Materials Center at Cornell Research Highlights In This Section The Structural Evolution and Diffusion During the Chemical Transformation from Cobalt to Cobalt Phosphide Nanoparticles Joint Density-Functional Theory of Electrochemistry Double-band Electrode Channel Flow DEMS Cell Sulfur@Carbon Cathodes for Lithium Sulfur Batteries Better Ham & Cheese: Enhanced Anodes and Cathodes for Fuel Cells Epitaxial Single Crystal Nanostructures for Batteries & PVs High

  8. Method for recovering catalytic elements from fuel cell membrane electrode assemblies

    DOEpatents

    Shore, Lawrence; Matlin, Ramail; Heinz, Robert

    2012-06-26

    A method for recovering catalytic elements from a fuel cell membrane electrode assembly is provided. The method includes converting the membrane electrode assembly into a particulate material, wetting the particulate material, forming a slurry comprising the wetted particulate material and an acid leachate adapted to dissolve at least one of the catalytic elements into a soluble catalytic element salt, separating the slurry into a depleted particulate material and a supernatant containing the catalytic element salt, and washing the depleted particulate material to remove any catalytic element salt retained within pores in the depleted particulate material.

  9. Process for recycling components of a PEM fuel cell membrane electrode assembly

    SciTech Connect

    Shore, Lawrence

    2012-02-28

    The membrane electrode assembly (MEA) of a PEM fuel cell can be recycled by contacting the MEA with a lower alkyl alcohol solvent which separates the membrane from the anode and cathode layers of the assembly. The resulting solution containing both the polymer membrane and supported noble metal catalysts can be heated under mild conditions to disperse the polymer membrane as particles and the supported noble metal catalysts and polymer membrane particles separated by known filtration means.

  10. Solid oxide fuel cells, and air electrode and electrical interconnection materials therefor

    DOEpatents

    Bates, J. Lambert

    1992-01-01

    In one aspect of the invention, an air electrode material for a solid oxide fuel cell comprises Y.sub.1-a Q.sub.a MnO.sub.3, where "Q" is selected from the group consisting of Ca and Sr or mixtures thereof and "a" is from 0.1 to 0.8. Preferably, "a" is from 0.4 to 0.7. In another aspect of the invention, an electrical interconnection material for a solid oxide fuel cell comprises Y.sub.1-b Ca.sub.b Cr.sub.1-c Al.sub.c O.sub.3, where "b" is from 0.1 to 0.6 and "c" is from 0 to 9.3. Preferably, "b" is from 0.3 to 0.5 and "c" is from 0.05 to 0.1. A composite solid oxide electrochemical fuel cell incorporating these materials comprises: a solid oxide air electrode and an adjacent solid oxide electrical interconnection which commonly include the cation Y, the air electrode comprising Y.sub.1-a Q.sub.a MnO.sub.3, where "Q" is selected from the group consisting of Ca and Sr or mixtures thereof and "a" is from 0.1 to 0.8, the electrical interconnection comprising Y.sub.1-b Ca.sub.b Cr.sub.1-c Al.sub.c O.sub.3, where "b" is from 0.1 to 0.6 and "c" is from 0.0 to 0.3; a yttrium stabilized solid electrolyte comprising (1-d)ZrO.sub.2 -(d)Y.sub.2 O.sub.3 where "d" is from 0.06 to 0.5; and a solid fuel electrode comprising X-ZrO.sub.2, where "X" is an elemental metal.

  11. Solid oxide fuel cells, and air electrode and electrical interconnection materials therefor

    DOEpatents

    Bates, J.L.

    1992-09-01

    In one aspect of the invention, an air electrode material for a solid oxide fuel cell comprises Y[sub 1[minus]a]Q[sub a]MnO[sub 3], where Q is selected from the group consisting of Ca and Sr or mixtures thereof and a' is from 0.1 to 0.8. Preferably, a' is from 0.4 to 0.7. In another aspect of the invention, an electrical interconnection material for a solid oxide fuel cell comprises Y[sub 1[minus]b]Ca[sub b]Cr[sub 1[minus]c]Al[sub c]O[sub 3], where b' is from 0.1 to 0.6 and c' is from 0 to 9.3. Preferably, b' is from 0.3 to 0.5 and c' is from 0.05 to 0.1. A composite solid oxide electrochemical fuel cell incorporating these materials comprises: a solid oxide air electrode and an adjacent solid oxide electrical interconnection which commonly include the cation Y, the air electrode comprising Y[sub 1[minus]a]Q[sub a]MnO[sub 3], where Q is selected from the group consisting of Ca and Sr or mixtures thereof and a' is from 0.1 to 0.8, the electrical interconnection comprising Y[sub 1[minus]b]Ca[sub b]Cr[sub 1[minus]c]Al[sub c]O[sub 3], where b' is from 0.1 to 0.6 and c' is from 0.0 to 0.3; a yttrium stabilized solid electrolyte comprising (1[minus]d)ZrO[sub 2]-(d)Y[sub 2]O[sub 3] where d' is from 0.06 to 0.5; and a solid fuel electrode comprising X-ZrO[sub 2], where X' is an elemental metal. 5 figs.

  12. NREL Develops Technique to Measure Membrane Thickness and Defects in Polymer Electrode Membrane Fuel Cells (Fact Sheet)

    SciTech Connect

    Not Available

    2010-11-01

    This fact sheet describes NREL's accomplishments in fuel cell membrane electrode assembly research and development. Work was performed by the Hydrogen Technologies and Systems Center and the National Center for Photovoltaics.

  13. Lanthanum manganite-based air electrode for solid oxide fuel cells

    DOEpatents

    Ruka, R.J.; Kuo, L.; Li, B.

    1999-06-29

    An air electrode material for a solid oxide fuel cell is disclosed. The electrode material is based on lanthanum manganite having a perovskite-like crystal structure ABO[sub 3]. The A-site of the air electrode material preferably comprises La, Ca, Ce and at least one lanthanide selected from Sm, Gd, Dy, Er, Y and Nd. The B-site of the electrode material comprises Mn with substantially no dopants. The ratio of A:B is preferably slightly above 1. A preferred air electrode composition is of the formula La[sub w]Ca[sub x]Ln[sub y]Ce[sub z]MnO[sub 3], wherein Ln comprises at least one lanthanide selected from Sm, Gd, Dy, Er, Y and Nd, w is from about 0.55 to about 0.56, x is from about 0.255 to about 0.265, y is from about 0.175 to about 0.185, and z is from about 0.005 to about 0.02. The air electrode material possesses advantageous chemical and electrical properties as well as favorable thermal expansion and thermal cycle shrinkage characteristics. 10 figs.

  14. Lanthanum manganite-based air electrode for solid oxide fuel cells

    DOEpatents

    Ruka, Roswell J.; Kuo, Lewis; Li, Baozhen

    1999-01-01

    An air electrode material for a solid oxide fuel cell is disclosed. The electrode material is based on lanthanum manganite having a perovskite-like crystal structure ABO.sub.3. The A-site of the air electrode material preferably comprises La, Ca, Ce and at least one lanthanide selected from Sm, Gd, Dy, Er, Y and Nd. The B-site of the electrode material comprises Mn with substantially no dopants. The ratio of A:B is preferably slightly above 1. A preferred air electrode composition is of the formula La.sub.w Ca.sub.x Ln.sub.y Ce.sub.z MnO.sub.3, wherein Ln comprises at least one lanthanide selected from Sm, Gd, Dy, Er, Y and Nd, w is from about 0.55 to about 0.56, x is from about 0.255 to about 0.265, y is from about 0.175 to about 0.185, and z is from about 0.005 to about 0.02. The air electrode material possesses advantageous chemical and electrical properties as well as favorable thermal expansion and thermal cycle shrinkage characteristics.

  15. Cerium-modified doped strontium titanate compositions for solid oxide fuel cell anodes and electrodes for other electrochemical devices

    DOEpatents

    Marina, Olga A [Richland, WA; Stevenson, Jeffry W [Richland, WA

    2010-11-23

    The present invention provides novel compositions that find advantageous use in making electrodes for electrochemical cells and electrochemical devices such as solid oxide fuel cells, electrolyzers, sensors, pumps and the like, the compositions comprising cerium-modified doped strontium titanate. The invention also provides novel methods for making and using anode material compositions and solid oxide fuel cells and solid oxide fuel cell assemblies having anodes comprising the compositions.

  16. Cerium-modified doped strontium titanate compositions for solid oxide fuel cell anodes and electrodes for other electrochemical devices

    DOEpatents

    Marina, Olga A [Richland, WA; Stevenson, Jeffry W [Richland, WA

    2010-03-02

    The present invention provides novel compositions that find advantageous use in making electrodes for electrochemical cells and electrochemical devices such as solid oxide fuel cells, electrolyzers, sensors, pumps and the like, the compositions comprising cerium-modified doped strontium titanate. The invention also provides novel methods for making and using anode material compositions and solid oxide fuel cells and solid oxide fuel cell assemblies having anodes comprising the compositions.

  17. Electrode assembly for use in a solid polymer electrolyte fuel cell

    DOEpatents

    Raistrick, Ian D.

    1989-01-01

    A gas reaction fuel cell may be provided with a solid polymer electrolyte membrane. Porous gas diffusion electrodes are formed of carbon particles supporting a catalyst which is effective to enhance the gas reactions. The carbon particles define interstitial spaces exposing the catalyst on a large surface area of the carbon particles. A proton conducting material, such as a perfluorocarbon copolymer or ruthenium dioxide contacts the surface areas of the carbon particles adjacent the interstitial spaces. The proton conducting material enables protons produced by the gas reactions adjacent the supported catalyst to have a conductive path with the electrolyte membrane. The carbon particles provide a conductive path for electrons. A suitable electrode may be formed by dispersing a solution containing a proton conducting material over the surface of the electrode in a manner effective to coat carbon surfaces adjacent the interstitial spaces without impeding gas flow into the interstitial spaces.

  18. High performance radiation-grafted membranes and electrodes for polymer electrolyte fuel cells

    SciTech Connect

    Nezu, Shinji; Seko, Hideo; Gondo, Masaki; Ito, Naoki

    1996-12-31

    Polymer electrolyte fuel cells (PEFC) have attracted much attention for stationary and electric vehicle applications. Much progress has been made to improve their performance recently. However there are still several problems to overcome for commercialization. Among them, the cost of polymer electrolyte membranes seems to be rather critical, because a cost estimate of a practical fuel cell stack shows that the membrane cost must be reduced at least by two orders of magnitude based on current perfluorosulfonic acid membranes eg. Nafion{reg_sign}. Thus the development of new membrane materials is strongly desired. Styrene grafted tetrafluoroethylene-hexafluoropropylene copolymer (FEP) membranes have been studied for a fuel cell application by G. Scherer et al. These authors showed that membranes obtained by radiation grafting served as an alternative membrane for fuel cells although there were several problems to overcome in the future. These problems include shorter life time which was concluded to result from the decomposition of grafted polystyrene side chains. We report here the performance of our fuel cells which were fabricated from our radiation grafted membranes (IMRA MEMBRANE) and gas diffusion electrodes.

  19. Solid oxide fuel cell with single material for electrodes and interconnect

    DOEpatents

    McPheeters, Charles C.; Nelson, Paul A.; Dees, Dennis W.

    1994-01-01

    A solid oxide fuel cell having a plurality of individual cells. A solid oxide fuel cell has an anode and a cathode with electrolyte disposed therebetween, and the anode, cathode and interconnect elements are comprised of substantially one material.

  20. Novel Electrode Materials for Low-Temperature Solid-Oxide Fuel Cells

    SciTech Connect

    Shaowu Zha; Meilin Liu

    2005-03-23

    Composites electrodes consisting of silver and bismuth vanadates exhibit remarkable catalytic activity for oxygen reduction at 500-550 C and greatly reduce the cathode-electrolyte (doped ceria) resistances of low temperature SOFCs, down to about 0.53 {omega}cm{sup 2} at 500 C and 0.21 {omega}cm{sup 2} at 550 C. The observed power densities of 231, 332, and 443 mWcm-2 at 500, 525 and 550 C, respectively, make it possible to operate SOFCs at temperatures about 500 C. Fuel cell performance depends strongly on the anode microstructure, which is determined by the anode compositions and fabrication conditions. Four types of anodes with two kinds of NiO and GDC powders were investigated. By carefully adjusting the anode microstructure, the GDC electrolyte/anode interfacial polarization resistances reduced dramatically. The interfacial resistance at 600 C decreased from 1.61 {omega} cm{sup 2} for the anodes prepared using commercially available powders to 0.06 {omega} cm{sup 2} for those prepared using powders derived from a glycine-nitrate process. Although steam reforming or partial oxidation is effective in avoiding carbon deposition of hydrocarbon fuels, it increases the operating cost and reduces the energy efficiency. Anode-supported SOFCs with an electrolyte of 20 {micro}m-thick Gd-doped ceria (GDC) were fabricated by co-pressing. A catalyst (1 %wt Pt dispersed on porous Gd-doped ceria) for pre-reforming of propane was developed with relatively low steam to carbon (S/C) ratio ({approx}0.5), coupled with direct utilization of the reformate in low-temperature SOFCs. Propane was converted to smaller molecules during pre-reforming, including H{sub 2}, CH{sub 4}, CO, and CO{sub 2}. A peak power density of 247 mW/cm{sup 2} was observed when pre-reformed propane was directly fed to an SOFC operated at 600 C. No carbon deposition was observed in the fuel cell for a continuous operation of 10 hours at 600 C. The ability of producing vastly different microstructures and

  1. Bio-inspired surfactant assisted nano-catalyst impregnation of Solid-Oxide Fuel Cell (SOFC) electrodes

    SciTech Connect

    Ozmen, Ozcan; Zondlo, John W.; Lee, Shiwoo; Sabolsky, Edward M.

    2015-11-02

    A bio-inspired surfactant was utilized to assist in the efficient impregnation of a nano-CeO₂ catalyst throughout both porous Solid Oxide Fuel Cells (SOFC’s) electrodes simultaneously. The process included the initial modification of electrode pore walls with a polydopamine film. The cell was then submersed into a cerium salt solution. The amount of nano-CeO₂ deposited per impregnation step increased by 3.5 times by utilizing this two-step protocol in comparison to a conventional drip impregnation method. The impregnated cells exhibited a 20% higher power density than a baseline cell without the nano-catalyst at 750°C (using humid H₂ fuel).

  2. Solid oxide fuel cell with single material for electrodes and interconnect

    DOEpatents

    McPheeters, C.C.; Nelson, P.A.; Dees, D.W.

    1994-07-19

    A solid oxide fuel cell is described having a plurality of individual cells. A solid oxide fuel cell has an anode and a cathode with electrolyte disposed there between, and the anode, cathode and interconnect elements are comprised of substantially one material. 9 figs.

  3. Electrode design for low temperature direct-hydrocarbon solid oxide fuel cells

    SciTech Connect

    Chen, Fanglin; Zhao, Fei; Liu, Qiang

    2015-10-06

    In certain embodiments of the present disclosure, a solid oxide fuel cell is described. The solid oxide fuel cell includes a hierarchically porous cathode support having an impregnated cobaltite cathode deposited thereon, an electrolyte, and an anode support. The anode support includes hydrocarbon oxidation catalyst deposited thereon, wherein the cathode support, electrolyte, and anode support are joined together and wherein the solid oxide fuel cell operates a temperature of 600.degree. C. or less.

  4. Supporting electrodes for solid oxide fuel cells and other electrochemical devices

    DOEpatents

    Sprenkle, Vincent L. (Richland, WA); Canfield, Nathan L. (Kennewick, WA); Meinhardt, Kerry (Kennewick, WA); Stevenson, Jeffry W. (Richland, WA)

    2008-04-01

    An electrode supported electrolyte membrane includes an electrode layer 630 facing an electrolyte layer 620. The opposing side of the electrode layer 630 includes a backing layer 640 of a material with a thermal expansion coefficient approximately equal to the thermal expansion coefficient of the electrolyte layer 620. The backing layer 640 is in a two dimensional pattern that covers only a portion of the electrolyte layer 630. An electrochemical cell such as a SOFC is formed by providing a cathode layer 610 on an opposing side of the electrolyte layer 620.

  5. Screening of Electrode Materials & Cell Chemistries and Streamlining...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    1 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit ... Screen Electrode Materials & Cell Chemistries and Streamlining Optimization of Electrode ...

  6. Molecular-scale, Three-dimensional Non-Platinum Group Metal Electrodes for Catalysis of Fuel Cell Reactions

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Molecular-scale, Three-dimensional Non-Platinum Group Metal Electrodes for Catalysis of Fuel Cell Reactions John B. Kerr Lawrence Berkeley National Laboratory (LBNL) September 30, 2009 Team Members: Adam Weber, Rachel Segalman, Robert Kostecki, Jeff Reimer, John Arnold, Martin Head-Gordon (LBNL). Piotr Zelenay, James Boncella, Yu Seung Kim, Neil Henson, Jerzy Chlistunoff (LANL). Steve Hamrock, Radoslav Atanasoski (3M) Budget: DOE share - $9.58MM over four years; 3M share - in-kind over four

  7. Air Breathing Direct Methanol Fuel Cell

    DOEpatents

    Ren; Xiaoming

    2003-07-22

    A method for activating a membrane electrode assembly for a direct methanol fuel cell is disclosed. The method comprises operating the fuel cell with humidified hydrogen as the fuel followed by running the fuel cell with methanol as the fuel.

  8. Electrolytic/fuel cell bundles and systems including a current collector in communication with an electrode thereof

    DOEpatents

    Hawkes, Grant L.; Herring, James S.; Stoots, Carl M.; O& #x27; Brien, James E.

    2013-03-05

    Electrolytic/fuel cell bundles and systems including such bundles include an electrically conductive current collector in communication with an anode or a cathode of each of a plurality of cells. A cross-sectional area of the current collector may vary in a direction generally parallel to a general direction of current flow through the current collector. The current collector may include a porous monolithic structure. At least one cell of the plurality of cells may include a current collector that surrounds an outer electrode of the cell and has at least six substantially planar exterior surfaces. The planar surfaces may extend along a length of the cell, and may abut against a substantially planar surface of a current collector of an adjacent cell. Methods for generating electricity and for performing electrolysis include flowing current through a conductive current collector having a varying cross-sectional area.

  9. Reference electrode for electrolytic cell

    DOEpatents

    Kessie, R.W.

    1988-07-28

    A reference electrode device is provided for a high temperature electrolytic cell used to electrolytically recover uranium from spent reactor fuel dissolved in an anode pool, the device having a glass tube to enclose the electrode and electrolyte and serve as a conductive membrane with the cell electrolyte, and an outer metal tube about the glass tube to serve as a shield and basket for any glass sections broken by handling of the tube to prevent their contact with the anode pool, the metal tube having perforations to provide access between the bulk of the cell electrolyte and glass membrane. 4 figs.

  10. PEM/SPE fuel cell

    DOEpatents

    Grot, Stephen Andreas

    1998-01-01

    A PEM/SPE fuel cell including a membrane-electrode assembly (MEA) having a plurality of oriented filament embedded the face thereof for supporting the MEA and conducting current therefrom to contiguous electrode plates.

  11. PEM/SPE fuel cell

    DOEpatents

    Grot, S.A.

    1998-01-13

    A PEM/SPE fuel cell is described including a membrane-electrode assembly (MEA) having a plurality of oriented filament embedded the face thereof for supporting the MEA and conducting current therefrom to contiguous electrode plates. 4 figs.

  12. Double interconnection fuel cell array

    DOEpatents

    Draper, R.; Zymboly, G.E.

    1993-12-28

    A fuel cell array is made, containing number of tubular, elongated fuel cells which are placed next to each other in rows (A, B, C, D), where each cell contains inner electrodes and outer electrodes, with solid electrolyte between the electrodes, where the electrolyte and outer electrode are discontinuous, having two portions, and providing at least two opposed discontinuities which contain at least two oppositely opposed interconnections contacting the inner electrode, each cell having only three metallic felt electrical connectors which contact surrounding cells, where each row is electrically connected to the other. 5 figures.

  13. Double interconnection fuel cell array

    DOEpatents

    Draper, Robert; Zymboly, Gregory E.

    1993-01-01

    A fuel cell array (10) is made, containing number of tubular, elongated fuel cells (12) which are placed next to each other in rows (A, B, C, D), where each cell contains inner electrodes (14) and outer electrodes (18 and 18'), with solid electrolyte (16 and 16') between the electrodes, where the electrolyte and outer electrode are discontinuous, having two portions, and providing at least two opposed discontinuities which contain at least two oppositely opposed interconnections (20 and 20') contacting the inner electrode (14), each cell (12) having only three metallic felt electrical connectors (22) which contact surrounding cells, where each row is electrically connected to the other.

  14. Preparation method of ultra low platinum loading electrodes for polymer electrolyte fuel cells

    SciTech Connect

    Fukuoka, Yuko; Uchida, Makoto; Sugawara, Yasushi

    1996-12-31

    Polymer electrolyte fuel cells (PEFCs) necessitates platinum (Pt) catalyst for its operating temperature. It is important to enhance the utilization of Pt for the cost. The reaction sites exist on the Pt Surface covered with perfluorosulfonate ionomer (PFSI) in PEFC. PFSI solution was usually impregnated into the catalyst layers to increase the contact areas. We proposed a preparation method of the M&E assembly which emphasized the colloid formation of the PFSI to optimize the network of PFSIs in the catalyst layer. After this work, we focused on the microstructure of the catalyst layer. We recently reported that the PFSI was distributed only in the pores formed between the agglomerates, and the reaction sites were therefore limited to that area. The results indicated that the PEFC system required a particular design compared with a conventional one with liquid electrolytes. We proposed novel structure and/or preparation methods of the catalyst layer to be key issues to get higher Pt utilization. We studied the effect of the carbon support on the cell performance. The performance was improved by an optimal carbon support: that has (i) a larger pore volume (0.04 to 1.0 {mu}m in diameter) able to be distributed the PFSI and (ii) smaller pore volume (< 8 nm in diameter) on the surface of the carbon primary particles. We report here the high dispersion method of the PFSI colloid to lower Pt loading with optimal carbon support.

  15. Screening of Electrode Materials & Cell Chemistries and Streamlining...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    2 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review ... Materials & Cell Chemistries and Streamlining Optimization of Electrodes Validation of

  16. Electrode for electrochemical cell

    DOEpatents

    Kaun, T.D.; Nelson, P.A.; Miller, W.E.

    1980-05-09

    An electrode structure for a secondary electrochemical cell includes an outer enclosure defining a compartment containing electrochemical active material. The enclosure includes a rigid electrically conductive metal sheet with perforated openings over major side surfaces. The enclosure can be assembled as first and second trays each with a rigid sheet of perforated electrically conductive metal at major side surfaces and normally extending flanges at parametric margins. The trays can be pressed together with moldable active material between the two to form an expandable electrode. A plurality of positive and negative electrodes thus formed are arranged in an alternating array with porous frangible interelectrode separators within the housing of the secondary electrochemical cell.

  17. NREL: Hydrogen and Fuel Cells Research - Fuel Cells

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Cells Photo of scientific equipment in a laboratory setting. NREL scientist applies catalyst layer to a fuel cell through a spray process that delivers a more even distribution of material, improving performance. Photo by Dennis Schroeder, NREL What is a fuel cell? A single fuel cell consists of an electrolyte sandwiched between two electrodes. Bipolar plates on either side of the cell help distribute gases and serve as current collectors. Depending on the application, a fuel cell stack may

  18. Development of a Low-Cost, Durable Membrane and Membrane Electrode Assemby for Stationary and Mobile Fuel Cell Applications

    SciTech Connect

    Michel Foure; Gaboury, Scott; Goldbach, Jim; Mountz, David; Yi, Jung

    2008-01-31

    The development of low cost, durable membranes and membranes electrode assemblies (MEAs) remain a critical challenge for the successful introduction of fuel cells into mass markets. It was the goal of the team lead by Arkema, Inc. (formerly Atofina, Inc.) to address these shortages. Thus, this project addresses the following technical barriers from the Fuel Cells section of the Hydrogen Fuel Cells and Infrastructure Technologies Program Multi-Year Research, Development and Demonstration Plan: (A) Durability (B) Cost Arkema’s approach consisted in using blends of polyvinylidenefluoride (PVDF) and proprietary sulfonated polyelectrolytes. The strength and originality of Arkema’s approach lies in the decoupling of ion conductivity from the other requirements. Kynar® (Arkema trade name for PVDF) provides an exceptional combination of properties that make it ideally suited for a membrane matrix. In a first phase, Arkema demonstrated the feasibility of the concept with the M31 membrane generation. After MEA optimization, it was shown that the beginning-of-life (BOL) performance of M31 MEAs was essentially on a par with that of PFSA MEAs at 60ºC under fully humidified conditions. On the other hand, long-term durability studies showed a high decay rate of 45µV/h over a 2100 hr. test. Arkema then designed several families of polyelectrolyte candidates, which, in principle, could not undergo the same failure mechanisms. A new membrane candidate was developed: M41. It offered the same generally good mechanical, ex-situ conductivity and gas barrier properties as M31. In addition, ex-situ accelerated testing suggested a several orders of magnitude improvement in chemical stability. M41 based MEAs showed comparable BOL performance with that of PFSA (80ºC, 100% RH). M41 MEAs were further shown to be able to withstand several hours temperature excursions at 120ºC without apparent damage. Accelerated studies were carried out using the DOE and/or US Fuel Cell Council

  19. FUEL CELLS Fuel Cell Cars

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    CELLS Fuel Cell Cars Power, performance, and pollution - free Only water from tailpipe More efficient than traditional combustion Only water and heat as byproducts Produce electricity without any combustion Scale up easily to meet many power needs Hydrogen in. Electricity, Heat and Water Out. Share the knowledge #FuelCellsNow #HydrogenNow Learn more: energy.gov/eere/fuelcells Most abundant element in universe Fuel Cell Cars Power, performance, and pollution - free Only water from tailpipe Fuel

  20. Rapidly refuelable fuel cell

    DOEpatents

    Joy, Richard W. (Santa Clara, CA)

    1983-01-01

    This invention is directed to a metal-air fuel cell where the consumable metal anode is movably positioned in the cell and an expandable enclosure, or bladder, is used to press the anode into contact with separating spacers between the cell electrodes. The bladder may be depressurized to allow replacement of the anode when consumed.

  1. Fuel Cell Basics | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Renewable Energy » Hydrogen & Fuel Cells » Fuel Cell Basics Fuel Cell Basics August 14, 2013 - 2:09pm Addthis Text Version Photo of two hydrogen fuel cells. Fuel cells can provide heat and electricity for buildings and electrical power for vehicles and electronic devices. HOW FUEL CELLS WORK Fuel cells work like batteries, but they do not run down or need recharging. They produce electricity and heat as long as fuel is supplied. A fuel cell consists of two electrodes-a negative electrode

  2. Screening of Electrode Materials & Cell Chemistries and Streamlining

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Optimization of Electrodes | Department of Energy Screening of Electrode Materials & Cell Chemistries and Streamlining Optimization of Electrodes Screening of Electrode Materials & Cell Chemistries and Streamlining Optimization of Electrodes 2012 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting es028_lu_2012_o.pdf (2.32 MB) More Documents & Publications Cell Fabrication Facility Team Production and Research

  3. Composite fuel cell membranes

    DOEpatents

    Plowman, Keith R. (Lake Jackson, TX); Rehg, Timothy J. (Lake Jackson, TX); Davis, Larry W. (West Columbia, TX); Carl, William P. (Marble Falls, TX); Cisar, Alan J. (Cypress, TX); Eastland, Charles S. (West Columbia, TX)

    1997-01-01

    A bilayer or trilayer composite ion exchange membrane suitable for use in a fuel cell. The composite membrane has a high equivalent weight thick layer in order to provide sufficient strength and low equivalent weight surface layers for improved electrical performance in a fuel cell. In use, the composite membrane is provided with electrode surface layers. The composite membrane can be composed of a sulfonic fluoropolymer in both core and surface layers.

  4. Composite fuel cell membranes

    DOEpatents

    Plowman, K.R.; Rehg, T.J.; Davis, L.W.; Carl, W.P.; Cisar, A.J.; Eastland, C.S.

    1997-08-05

    A bilayer or trilayer composite ion exchange membrane is described suitable for use in a fuel cell. The composite membrane has a high equivalent weight thick layer in order to provide sufficient strength and low equivalent weight surface layers for improved electrical performance in a fuel cell. In use, the composite membrane is provided with electrode surface layers. The composite membrane can be composed of a sulfonic fluoropolymer in both core and surface layers.

  5. Ice electrode electrolytic cell

    DOEpatents

    Glenn, David F. (Idaho Falls, ID); Suciu, Dan F. (Idaho Falls, ID); Harris, Taryl L. (Idaho Falls, ID); Ingram, Jani C. (Idaho Falls, ID)

    1993-01-01

    This invention relates to a method and apparatus for removing heavy metals from waste water, soils, or process streams by electrolytic cell means. The method includes cooling a cell cathode to form an ice layer over the cathode and then applying an electric current to deposit a layer of the heavy metal over the ice. The metal is then easily removed after melting the ice. In a second embodiment, the same ice-covered electrode can be employed to form powdered metals.

  6. Ice electrode electrolytic cell

    DOEpatents

    Glenn, D.F.; Suciu, D.F.; Harris, T.L.; Ingram, J.C.

    1993-04-06

    This invention relates to a method and apparatus for removing heavy metals from waste water, soils, or process streams by electrolytic cell means. The method includes cooling a cell cathode to form an ice layer over the cathode and then applying an electric current to deposit a layer of the heavy metal over the ice. The metal is then easily removed after melting the ice. In a second embodiment, the same ice-covered electrode can be employed to form powdered metals.

  7. Fuel cell having electrolyte

    DOEpatents

    Wright, Maynard K. (Bethel Park, PA)

    1989-01-01

    A fuel cell having an electrolyte control volume includes a pair of porous opposed electrodes. A maxtrix is positioned between the pair of electrodes for containing an electrolyte. A first layer of backing paper is positioned adjacent to one of the electrodes. A portion of the paper is substantially previous to the acceptance of the electrolyte so as to absorb electrolyte when there is an excess in the matrix and to desorb electrolyte when there is a shortage in the matrix. A second layer of backing paper is positioned adjacent to the first layer of paper and is substantially impervious to the acceptance of electrolyte.

  8. Fuel Cells

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    and robust solid oxide fuel cell (SOFC) system. Specific objectives include achieving an efficiency of greater than 60 percent, meeting a stack cost target of 175 per kW, and ...

  9. Conditioning effects on La1-xSrxMnO3-Yttria stabilized Zirconia electrodes for thin-film solid oxide fuel cells

    SciTech Connect

    Lee, You-Kee; Kim, Jung-Yeul; Lee, Young-Ki; Kim, Insoo; Moon, Hee-Soo; Park, Jong-Wan; Jacobson, Craig P.; Visco, Steven J.

    2002-12-06

    Composite cathodes of 50/50 vol percent LSM-YSZ (La1-xSrxMnO3-yttria stabilized zirconia) were deposited onto dense YSZ electrolytes by a colloidal deposition technique. The cathode characteristics were then examined by scanning electron microscopy (SEM) and studied by an impedance spectroscopy (IS). Conditioning effects of the LSM-YSZ cathodes were seen, and remedies for these effects were proposed for improving the performance of a solid oxide fuel cell (SOFC). LSM surface contamination and modification, cathode bonding to the YSZ electrolyte, changing Pt electrode and bonding paste, and curvature of sintered YSZ electrolytes led to some changes in microstructure and variability in cell performances.

  10. Interconnection of bundled solid oxide fuel cells

    DOEpatents

    Brown, Michael; Bessette, II, Norman F; Litka, Anthony F; Schmidt, Douglas S

    2014-01-14

    A system and method for electrically interconnecting a plurality of fuel cells to provide dense packing of the fuel cells. Each one of the plurality of fuel cells has a plurality of discrete electrical connection points along an outer surface. Electrical connections are made directly between the discrete electrical connection points of adjacent fuel cells so that the fuel cells can be packed more densely. Fuel cells have at least one outer electrode and at least one discrete interconnection to an inner electrode, wherein the outer electrode is one of a cathode and and anode and wherein the inner electrode is the other of the cathode and the anode. In tubular solid oxide fuel cells the discrete electrical connection points are spaced along the length of the fuel cell.

  11. Methods of conditioning direct methanol fuel cells

    DOEpatents

    Rice, Cynthia; Ren, Xiaoming; Gottesfeld, Shimshon

    2005-11-08

    Methods for conditioning the membrane electrode assembly of a direct methanol fuel cell ("DMFC") are disclosed. In a first method, an electrical current of polarity opposite to that used in a functioning direct methanol fuel cell is passed through the anode surface of the membrane electrode assembly. In a second method, methanol is supplied to an anode surface of the membrane electrode assembly, allowed to cross over the polymer electrolyte membrane of the membrane electrode assembly to a cathode surface of the membrane electrode assembly, and an electrical current of polarity opposite to that in a functioning direct methanol fuel cell is drawn through the membrane electrode assembly, wherein methanol is oxidized at the cathode surface of the membrane electrode assembly while the catalyst on the anode surface is reduced. Surface oxides on the direct methanol fuel cell anode catalyst of the membrane electrode assembly are thereby reduced.

  12. Scientists teach short course on fuel cells

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    covering Hydrogen and Lab Safety, the Laboratory's Membrane-and-Electrode Process, Fuel Cell Materials Characterization, Modeling, Durability and Testing. October 8, 2015...

  13. Dr. Piotr Zelenay - Speaker Bio for the Fuel Cell Technologies...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Piotr Zelenay's Professional Bio Dr. Zelenay's expertise is in polymer electrolyte fuel cells, electrocatalysis, surface electrochemistry, electrode kinetics and organic ...

  14. Fuel cell system for transportation applications

    DOEpatents

    Kumar, R.; Ahmed, S.; Krumpelt, M.; Myles, K.M.

    1993-09-28

    A propulsion system is described for a vehicle having pairs of front and rear wheels and a fuel tank. An electrically driven motor having an output shaft operatively connected to at least one of said pair of wheels is connected to a fuel cell having a positive electrode and a negative electrode separated by an electrolyte for producing dc power to operate the motor. A partial oxidation reformer is connected both to the fuel tank and to the fuel cell and receives hydrogen-containing fuel from the fuel tank and uses water and air for partially oxidizing and reforming the fuel in the presence of an oxidizing catalyst and a reforming catalyst to produce a hydrogen-containing gas. The hydrogen-containing gas is sent from the partial oxidation reformer to the fuel cell negative electrode while air is transported to the fuel cell positive electrode to produce dc power for operating the electric motor. 3 figures.

  15. Fuel cell system for transportation applications

    DOEpatents

    Kumar, Romesh; Ahmed, Shabbir; Krumpelt, Michael; Myles, Kevin M.

    1993-01-01

    A propulsion system for a vehicle having pairs of front and rear wheels and a fuel tank. An electrically driven motor having an output shaft operatively connected to at least one of said pair of wheels is connected to a fuel cell having a positive electrode and a negative electrode separated by an electrolyte for producing dc power to operate the motor. A partial oxidation reformer is connected both to the fuel tank and to the fuel cell receives hydrogen-containing fuel from the fuel tank and water and air and for partially oxidizing and reforming the fuel with water and air in the presence of an oxidizing catalyst and a reforming catalyst to produce a hydrogen-containing gas. The hydrogen-containing gas is sent from the partial oxidation reformer to the fuel cell negative electrode while air is transported to the fuel cell positive electrode to produce dc power for operating the electric motor.

  16. Fuel cell-fuel cell hybrid system

    DOEpatents

    Geisbrecht, Rodney A.; Williams, Mark C.

    2003-09-23

    A device for converting chemical energy to electricity is provided, the device comprising a high temperature fuel cell with the ability for partially oxidizing and completely reforming fuel, and a low temperature fuel cell juxtaposed to said high temperature fuel cell so as to utilize remaining reformed fuel from the high temperature fuel cell. Also provided is a method for producing electricity comprising directing fuel to a first fuel cell, completely oxidizing a first portion of the fuel and partially oxidizing a second portion of the fuel, directing the second fuel portion to a second fuel cell, allowing the first fuel cell to utilize the first portion of the fuel to produce electricity; and allowing the second fuel cell to utilize the second portion of the fuel to produce electricity.

  17. Hydrogen and Fuel Cell Technologies Program: Fuel Cells Fact...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Hydrogen and Fuel Cell Technologies Program: Fuel Cells Fact Sheet Hydrogen and Fuel Cell Technologies Program: Fuel Cells Fact Sheet Fact sheet produced by the Fuel Cell ...

  18. Fuel Cell Technologies Overview

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Fuel Cell Seminar Orlando, FL Dr. Sunita Satyapal U.S. Department of Energy Fuel Cell Technologies Program Program Manager 1112011 2 | Fuel Cell Technologies Program Source: US ...

  19. Ambient pressure fuel cell system

    DOEpatents

    Wilson, Mahlon S.

    2000-01-01

    An ambient pressure fuel cell system is provided with a fuel cell stack formed from a plurality of fuel cells having membrane/electrode assemblies (MEAs) that are hydrated with liquid water and bipolar plates with anode and cathode sides for distributing hydrogen fuel gas and water to a first side of each one of the MEAs and air with reactant oxygen gas to a second side of each one of the MEAs. A pump supplies liquid water to the fuel cells. A recirculating system may be used to return unused hydrogen fuel gas to the stack. A near-ambient pressure blower blows air through the fuel cell stack in excess of reaction stoichiometric amounts to react with the hydrogen fuel gas.

  20. Fuel Cells and Renewable Gaseous Fuels

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Cell Technologies Office | 1 7142015 Fuel Cells and Renewable Gaseous Fuels Bioenergy 2015: Renewable Gaseous Fuels Breakout Session Sarah Studer, PhD ORISE Fellow Fuel Cell ...

  1. Fuel cell current collector

    DOEpatents

    Katz, Murray; Bonk, Stanley P.; Maricle, Donald L.; Abrams, Martin

    1991-01-01

    A fuel cell has a current collector plate (22) located between an electrode (20) and a separate plate (25). The collector plate has a plurality of arches (26, 28) deformed from a single flat plate in a checkerboard pattern. The arches are of sufficient height (30) to provide sufficient reactant flow area. Each arch is formed with sufficient stiffness to accept compressive load and sufficient resiliently to distribute the load and maintain electrical contact.

  2. A Damage Model for Degradation in the Electrodes of solid oxide fuel cells: Modeling the effects of sulfur and antimony in the anode

    SciTech Connect

    Ryan, Emily M.; Xu, Wei; Sun, Xin; Khaleel, Mohammad A.

    2012-07-15

    Over their designed lifetime, high temperature electrochemical devices, such as solid oxide fuel cells (SOFCs), can experience degradation in their electrochemical performance due to environmental conditions, operating conditions, contaminants, and other factors. Understanding the different degradation mechanisms in SOFCs and other electrochemical devices is essential to reducing performance degradation and increasing the lifetime of these devices. In this paper SOFC degradation mechanisms are discussed and a damage model is presented which describes performance degradation in SOFCs due to damage or degradation in the electrodes of the SOFC. A degradation classification scheme is presented that divides the various SOFC electrode degradation mechanisms into categories based on their physical effects on the SOFC. The application of the damage model and the classification method is applied to sulfur poisoning and antimony poisoning which occur in the anode of SOFCs. For sulfur poisoning the model is able to predict the degradation in SOFC performance based on the operating temperature and voltage of the fuel cell and the concentration of gaseous sulfur species in the anode. For antimony poisoning the effects of nickel removal from the anode matrix is investigated.

  3. Electrode for a lithium cell

    DOEpatents

    Thackeray, Michael M.; Vaughey, John T.; Dees, Dennis W.

    2008-10-14

    This invention relates to a positive electrode for an electrochemical cell or battery, and to an electrochemical cell or battery; the invention relates more specifically to a positive electrode for a non-aqueous lithium cell or battery when the electrode is used therein. The positive electrode includes a composite metal oxide containing AgV.sub.3O.sub.8 as one component and one or more other components consisting of LiV.sub.3O.sub.8, Ag.sub.2V.sub.4O.sub.11, MnO.sub.2, CF.sub.x, AgF or Ag.sub.2O to increase the energy density of the cell, optionally in the presence of silver powder and/or silver foil to assist in current collection at the electrode and to improve the power capability of the cell or battery.

  4. Fuel Cells at NASCAR

    Office of Energy Efficiency and Renewable Energy (EERE)

    Presentation slides from the DOE Fuel Cell Technologies Office webinar "Fuel Cells at NASCAR" held on April 17, 2014.

  5. Electrolyte reservoir for carbonate fuel cells

    DOEpatents

    Iacovangelo, Charles D. (Schenectady, NY); Shores, David A. (Minneapolis, MN)

    1985-01-01

    An electrode for a carbonate fuel cell and method of making same wherein a substantially uniform mixture of an electrode-active powder and porous ceramic particles suitable for a carbonate fuel cell are formed into an electrode with the porous ceramic particles having pores in the range of from about 1 micron to about 3 microns, and a carbonate electrolyte is in the pores of the ceramic particles.

  6. Electrochemical photovoltaic cells and electrodes

    DOEpatents

    Skotheim, Terje A.

    1984-01-01

    Improved electrochemical photovoltaic cells and electrodes for use therein, particularly electrodes employing amorphous silicon or polyacetylene coating are produced by a process which includes filling pinholes or porous openings in the coatings by electrochemical oxidation of selected monomers to deposit insulating polymer in the openings.

  7. Improved photovoltaic cells and electrodes

    DOEpatents

    Skotheim, T.A.

    1983-06-29

    Improved photovoltaic cells and electrodes for use therein, particularly electrodes employing amorphous silicon or polyacetylene coating are produced by a process which includes filling pinholes or porous openings in the coatings by electrochemical oxidation of selected monomers to deposit insulating polymer in the openings.

  8. Tubular solid oxide fuel cell current collector

    DOEpatents

    Bischoff, Brian L.; Sutton, Theodore G.; Armstrong, Timothy R.

    2010-07-20

    An internal current collector for use inside a tubular solid oxide fuel cell (TSOFC) electrode comprises a tubular coil spring disposed concentrically within a TSOFC electrode and in firm uniform tangential electrical contact with the electrode inner surface. The current collector maximizes the contact area between the current collector and the electrode. The current collector is made of a metal that is electrically conductive and able to survive under the operational conditions of the fuel cell, i.e., the cathode in air, and the anode in fuel such as hydrogen, CO, CO.sub.2, H.sub.2O or H.sub.2S.

  9. Fuel Cell Measurements of Performance and Durability of Non-PGM...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    FUEL CELL MEASUREMENTS OF PERFORMANCE AND DURABILITY OF NON-PGM ORR ELECTROCATALYSTS DOE DURABILITY WORKING GROUP 2011 CELL AND ELECTRODES Fuel cell: The surface area of the ...

  10. Characterization and analysis methods for the examination of the heterogeneous solid oxide fuel cell electrode microstructure: Part 2. Quantitative measurement of the microstructure and contributions to transport losses

    SciTech Connect

    Grew, Kyle N.; Peracchio, Aldo A.; Chiu, W. K. S.

    2010-12-15

    Advanced characterization and analysis of multifunctional materials, such as the materials found in heterogeneous solid oxide fuel cell (SOFC) electrode architectures, can help to provide a qualitative and quantitative understanding of how these structures respond to different manufacturing and operating practices. Dense, opaque materials, which have large X-ray mass absorption coefficients and features on sub-micrometer length scales, can make characterization difficult. Advances in tomographic X-ray imaging can permit this level of detailed characterization, and complement stereographic scanning electron microscope measurements that have also been reported. In this second part of a two-part study, details regarding quantitative characterization methods that have been used to examine the SOFC anode microstructure are reported. The detailed formulation and validation of a phase size distributions for the three constitutive phases, as well as resistive loss microstructure-induced resistive loss distributions in the nickel (Ni) and yttria-stabilized zirconia (YSZ) phases are provided in this section.

  11. Fuel Cell Technologies Overview

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Fuel Cell Technologies Overview Flow Cell Workshop Washington, DC Dr. Sunita Satyapal & Dr. Dimitrios Papageorgopoulos U.S. Department of Energy Fuel Cell Technologies Program 37...

  12. Fuel Cells Fact Sheet

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Fuel cells are the most energy efficient devices for extracting power from fuels. Capable of running on a variety of fuels, including hydrogen, natural gas, and biogas, fuel cells ...

  13. Scientists teach short course on fuel cells

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    October » Scientists teach short course on fuel cells Scientists teach short course on fuel cells Los Alamos scientists gave presentations covering Hydrogen and Lab Safety, the Laboratory's Membrane-and-Electrode Process, Fuel Cell Materials Characterization, Modeling, Durability and Testing. October 8, 2015 Scientists teach short course on fuel cells Materials Synthesis and Integrated Devices (MPA-11) scientists, Rangachary Mukundan (seated) and Tommy Rockward (left), during a demonstration in

  14. Molten carbonate fuel cell matrices

    DOEpatents

    Vogel, Wolfgang M.; Smith, Stanley W.

    1985-04-16

    A molten carbonate fuel cell including a cathode electrode of electrically conducting or semiconducting lanthanum containing material and an electrolyte containing matrix of an electrically insulating lanthanum perovskite. In addition, in an embodiment where the cathode electrode is LaMnO.sub.3, the matrix may include LaAlO.sub.3 or a lithium containing material such as LiAlO.sub.2 or Li.sub.2 TiO.sub.3.

  15. Open end protection for solid oxide fuel cells

    DOEpatents

    Zafred, Paolo R.; Dederer, Jeffrey T.; Tomlins, Gregory W.; Toms, James M.; Folser, George R.; Schmidt, Douglas S.; Singh, Prabhakar; Hager, Charles A.

    2001-01-01

    A solid oxide fuel cell (40) having a closed end (44) and an open end (42) operates in a fuel cell generator (10) where the fuel cell open end (42) of each fuel cell contains a sleeve (60, 64) fitted over the open end (42), where the sleeve (60, 64) extends beyond the open end (42) of the fuel cell (40) to prevent degradation of the interior air electrode of the fuel cell by fuel gas during operation of the generator (10).

  16. Screen Electrode Materials & Cell Chemistries and Streamlining...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Screening of Electrode Materials & Cell Chemistries and Streamlining Optimization of Electrodes Vehicle Technologies Office Merit Review 2015: Materials Benchmarking Activities for ...

  17. Method of electrode fabrication for solid oxide electrochemical cells

    DOEpatents

    Jensen, Russell R.

    1990-01-01

    A process for fabricating cermet electrodes for solid oxide electrochemical cells by sintering is disclosed. First, a porous metal electrode is fabricated on a solid oxide cell, such as a fuel cell by, for example, sintering, and is then infiltrated with a high volume fraction stabilized zirconia suspension. A second sintering step is used to sinter the infiltrated zirconia to a high density in order to more securely attach the electrode to the solid oxide electrolyte of the cell. High performance fuel electrodes can be obtained with this process. Further electrode performance enhancement may be achieved if stabilized zirconia doped with cerium oxide, chromium oxide, titanium oxide, and/or praseodymium oxide for electronic conduction is used.

  18. Method of electrode fabrication for solid oxide electrochemical cells

    DOEpatents

    Jensen, R.R.

    1990-11-20

    A process for fabricating cermet electrodes for solid oxide electrochemical cells by sintering is disclosed. First, a porous metal electrode is fabricated on a solid oxide cell, such as a fuel cell by, for example, sintering, and is then infiltrated with a high volume fraction stabilized zirconia suspension. A second sintering step is used to sinter the infiltrated zirconia to a high density in order to more securely attach the electrode to the solid oxide electrolyte of the cell. High performance fuel electrodes can be obtained with this process. Further electrode performance enhancement may be achieved if stabilized zirconia doped with cerium oxide, chromium oxide, titanium oxide, and/or praseodymium oxide for electronic conduction is used. 5 figs.

  19. Ohio Fuel Cell Initiative

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Top 5 Fuel Cell States: Why Local Policies Mean Green Growth Jun 21 st , 2011 2 * Ohio Fuel Cell Initiative * Ohio Fuel Cell Coalition * Accomplishments * Ohio Successes Discussion Areas 3 Ohio's Fuel Cell Initiative * Announced on 5/9/02 * Part of Ohio Third Frontier Initiative * $85 million investment to date * Core focus areas: 1) Expand the state's research capabilities; 2) Participate in demonstration projects; and 3) Expand the fuel cell industry in Ohio 4 OHIO'S FUEL CELL INITIATIVE

  20. Hydrogen and Fuel Cell Technologies Update: 2010 Fuel Cell Seminar...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Update: 2010 Fuel Cell Seminar and Exposition Hydrogen and Fuel Cell Technologies Update: 2010 Fuel Cell Seminar and Exposition Presentation by Sunita Satyapal at the 2010 Fuel ...

  1. Fuel Cell Case Study

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Building & Energy Initiatives * Solar 20 new; 30 total, ... * Alternative Energy-Fuel Cells, waste to electricity, ... History of Fuel Cell Contemplation * Back in 2006, UTC Power ...

  2. Hydrogen Fuel Cell Demonstration ...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Hydrogen fuel cells have a long track record of supplying efficient, emissions-free power ... power, by demonstrating a hydrogen fuel cell deployment in a commercial port setting. ...

  3. Fuel Cell Technologies Overview

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    States Energy Advisory Board (STEAB) Washington, DC Dr. Sunita Satyapal U.S. Department of Energy Fuel Cell Technologies Program Program Manager 3142012 2 | Fuel Cell ...

  4. Fuel Cell Technologies Overview

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Fuel Cell Technologies Overview States Energy Advisory Board (STEAB) Washington, DC Dr. Sunita Satyapal U.S. Department of Energy Fuel Cell Technologies Program Program Manager 3...

  5. Fuel Cell Development Status

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    60% of Sales are in building technologies Transportation Stationary Fuel Cells Space & Defense * Fuel cell technology leader since 1958 * 550 employees * 768+ Active U.S. ...

  6. Fuel cell system with separating structure bonded to electrolyte

    DOEpatents

    Bourgeois, Richard Scott; Gudlavalleti, Sauri; Quek, Shu Ching; Hasz, Wayne Charles; Powers, James Daniel

    2010-09-28

    A fuel cell assembly comprises a separating structure configured for separating a first reactant and a second reactant wherein the separating structure has an opening therein. The fuel cell assembly further comprises a fuel cell comprising a first electrode, a second electrode, and an electrolyte interposed between the first and second electrodes, and a passage configured to introduce the second reactant to the second electrode. The electrolyte is bonded to the separating structure with the first electrode being situated within the opening, and the second electrode being situated within the passage.

  7. California Fuel Cell Partnership: Alternative Fuels Research

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Fuel Cell Partnership - Alternative Fuels Research TNS Automotive Chris White Communications Director cwhite@cafcp.org 2 TNS Automotive for California Fuel Cell Partnership ...

  8. High Temperature Electrolysis using Electrode-Supported Cells

    SciTech Connect

    J. E. O'Brien; C. M. Stoots

    2010-07-01

    An experimental study is under way to assess the performance of electrode-supported solid-oxide cells operating in the steam electrolysis mode for hydrogen production. The cells currently under study were developed primarily for the fuel cell mode of operation. Results presented in this paper were obtained from single cells, with an active area of 16 cm2 per cell. The electrolysis cells are electrode-supported, with yttria-stabilized zirconia (YSZ) electrolytes (~10 µm thick), nickel-YSZ steam/hydrogen electrodes (~1400 µm thick), and manganite (LSM) air-side electrodes (~90 µm thick). The purpose of the present study was to document and compare the performance and degradation rates of these cells in the fuel cell mode and in the electrolysis mode under various operating conditions. Initial performance was documented through a series of DC potential sweeps and AC impedance spectroscopy measurements. Degradation was determined through long-duration testing, first in the fuel cell mode, then in the electrolysis mode over more than 500 hours of operation. Results indicate accelerated degradation rates in the electrolysis mode compared to the fuel cell mode, possibly due to electrode delamination. The paper also includes details of the single-cell test apparatus developed specifically for these experiments.

  9. Method of fabricating electrode catalyst layers with directionally oriented carbon support for proton exchange membrane fuel cell

    DOEpatents

    Liu, Di-Jia; Yang, Junbing

    2012-03-20

    A membrane electrode assembly (MEA) of the invention comprises an anode and a cathode and a proton conductive membrane therebetween, the anode and the cathode each comprising a patterned sheet of longitudinally aligned transition metal-containing carbon nanotubes, wherein the carbon nanotubes are in contact with and are aligned generally perpendicular to the membrane, wherein a catalytically active transition metal is incorporated throughout the nanotubes.

  10. Hydrogen and Fuel Cell Technologies Program: Fuel Cells Fact Sheet |

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Department of Energy Hydrogen and Fuel Cell Technologies Program: Fuel Cells Fact Sheet Hydrogen and Fuel Cell Technologies Program: Fuel Cells Fact Sheet Fact sheet produced by the Fuel Cell Technologies Program describing hydrogen fuel cell technology. Fuel Cells Fact Sheet (545.14 KB) More Documents & Publications Comparison of Fuel Cell Technologies: Fact Sheet Fuel Cells Fact Sheet 2011 Pathways to Commercial Success: Technologies and Products Supported by the Fuel Cell Technologies

  11. Breaking the Fuel Cell Cost Barrier

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Breaking the Fuel Cell Cost Barrier AMFC Workshop May 8 th , 2011, Arlington, VA Shimshon Gottesfeld, CTO The Fuel Cell Cost Challenge 2 CellEra's goal - achieve price parity with incumbents earlier on in market entry process ! Mainstream Polymer Electrolyte Fuel Cell ( PEM) Cost Barriers 3 Graphite / stainless steel hardware Acidic membrane Platinum based electrodes Cost barriers deeply embedded in core tech materials BOM-based cost barriers - 90% of stack cost Cost volatility - Platinum

  12. Interfacial material for solid oxide fuel cell

    DOEpatents

    Baozhen, Li (Essex Junction, VT); Ruka, Roswell J. (Pittsburgh, PA); Singhal, Subhash C. (Murrysville, PA)

    1999-01-01

    Solid oxide fuel cells having improved low-temperature operation are disclosed. In one embodiment, an interfacial layer of terbia-stabilized zirconia is located between the air electrode and electrolyte of the solid oxide fuel cell. The interfacial layer provides a barrier which controls interaction between the air electrode and electrolyte. The interfacial layer also reduces polarization loss through the reduction of the air electrode/electrolyte interfacial electrical resistance. In another embodiment, the solid oxide fuel cell comprises a scandia-stabilized zirconia electrolyte having high electrical conductivity. The scandia-stabilized zirconia electrolyte may be provided as a very thin layer in order to reduce resistance. The scandia-stabilized electrolyte is preferably used in combination with the terbia-stabilized interfacial layer. The solid oxide fuel cells are operable over wider temperature ranges and wider temperature gradients in comparison with conventional fuel cells.

  13. Micro-electro-mechanical systems phosphoric acid fuel cell

    DOEpatents

    Sopchak, David A.; Morse, Jeffrey D.; Upadhye, Ravindra S.; Kotovsky, Jack; Graff, Robert T.

    2010-08-17

    A phosphoric acid fuel cell system comprising a porous electrolyte support, a phosphoric acid electrolyte in the porous electrolyte support, a cathode electrode contacting the phosphoric acid electrolyte, and an anode electrode contacting the phosphoric acid electrolyte.

  14. Micro-electro-mechanical systems phosphoric acid fuel cell

    DOEpatents

    Sopchak, David A.; Morse, Jeffrey D.; Upadhye, Ravindra S.; Kotovsky, Jack; Graff, Robert T.

    2010-12-21

    A phosphoric acid fuel cell system comprising a porous electrolyte support, a phosphoric acid electrolyte in the porous electrolyte support, a cathode electrode contacting the phosphoric acid electrolyte, and an anode electrode contacting the phosphoric acid electrolyte.

  15. Aluminum reduction cell electrode

    DOEpatents

    Goodnow, W.H.; Payne, J.R.

    1982-09-14

    The invention is directed to cathode modules comprised of refractory hard metal materials, such as TiB[sub 2], for an electrolytic cell for the reduction of alumina wherein the modules may be installed and replaced during operation of the cell and wherein the structure of the cathode modules is such that the refractory hard metal materials are not subjected to externally applied forces or rigid constraints. 9 figs.

  16. Aluminum reduction cell electrode

    DOEpatents

    Goodnow, Warren H.; Payne, John R.

    1982-01-01

    The invention is directed to cathode modules comprised of refractory hard metal materials, such as TiB.sub.2, for an electrolytic cell for the reduction of alumina wherein the modules may be installed and replaced during operation of the cell and wherein the structure of the cathode modules is such that the refractory hard metal materials are not subjected to externally applied forces or rigid constraints.

  17. Preventing CO poisoning in fuel cells

    DOEpatents

    Gottesfeld, Shimshon

    1990-01-01

    Proton exchange membrane (PEM) fuel cell performance with CO contamination of the H.sub.2 fuel stream is substantially improved by injecting O.sub.2 into the fuel stream ahead of the fuel cell. It is found that a surface reaction occurs even at PEM operating temperatures below about 100.degree. C. to oxidatively remove the CO and restore electrode surface area for the H.sub.2 reaction to generate current. Using an O.sub.2 injection, a suitable fuel stream for a PEM fuel cell can be formed from a methanol source using conventional reforming processes for producing H.sub.2.

  18. Characterization and Analysis Methods for the Examination of the Heterogeneous Solid Oxide Fuel Cell Electrode Microstructure, Part 1: Volumetric Measurements of the Heterogeneous Structure

    SciTech Connect

    Grew, Kyle N.; Peracchio, Aldo A.; Joshi, Abhijit S.; Izzo, Jr., John R.; Chiu, W. K. S.

    2010-12-15

    Advanced imaging and characterization methods have permitted the 3-D and phase-specific reconstruction of dense and opaque samples with features that have a length scale on the order of tens of nanometers and comprised of materials with large X-ray mass absorption coefficients. Engineered materials, like those found in solid oxide fuel cell (SOFC) electrodes, use complex materials that have often limited opportunities to perform 3-D characterization and analysis. Still, characterization and analysis methods are needed to better understand these structures and their functional impact. The development, verification, and validation of methods used by the authors for the characterization and analysis of the heterogeneous SOFC anode are discussed in this work. These methods include the measurement of the volume fractions of the individual phases, contiguity or volumetric connectivity, tortuosity, and interfacial properties. A second and complementary part of this work will examine quantitative methods that provide detailed descriptions of the structure and its relations to the transport processes that it must support. These efforts are intended to describe the formulation of methods developed to provide insight into the SOFC anode nano/microstructure.

  19. Self-humidified proton exchange membrane fuel cells: Operation of larger cells and fuel cell stacks

    SciTech Connect

    Dhar, H.P.; Lee, J.H.; Lewinski, K.A.

    1996-12-31

    The PEM fuel cell is promising as the power source for use in mobile and stationary applications primarily because of its high power density, all solid components, and simplicity of operation. For wide acceptability of this power source, its cost has to be competitive with the presently available energy sources. The fuel cell requires continuous humidification during operation as a power source. The humidification unit however, increases fuel cell volume, weight, and therefore decreases its overall power density. Great advantages in terms of further fuel cell simplification can be achieved if the humidification process can be eliminated or minimized. In addition, cost reductions are associated with the case of manufacturing and operation. At BCS Technology we have developed a technology of self-humidified operation of PEM fuel cells based on the mass balance of the reactants and products and the ability of membrane electrode assembly (MEA) to retain water necessary for humidification under the cell operating conditions. The reactants enter the fuel cell chambers without carrying any form of water, whether in liquid or vapor form. Basic principles of self-humidified operation of fuel cells as practiced by BCS Technology, Inc. have been presented previously in literature. Here, we report the operation of larger self-humidified single cells and fuel cell stacks. Fuel cells of areas Up to 100 cm{sup 2} have been operated. We also show the self-humidified operation of fuel cell stacks of 50 and 100 cm{sup 2} electrode areas.

  20. Aluminum reduction cell electrode

    DOEpatents

    Payne, John R. (Pleasanton, CA)

    1983-09-20

    The invention is directed to an anode-cathode structure for an electrolytic cell for the reduction of alumina wherein the structure is comprised of a carbon anode assembly which straddles a wedge-shaped refractory hard metal cathode assembly having steeply sloped cathodic surfaces, each cathodic surface being paired in essentially parallel planar relationship with an anode surface. The anode-cathode structure not only takes into account the structural weakness of refractory hard metal materials but also permits the changing of the RHM assembly during operation of the cell. Further, the anode-cathode structure enhances the removal of anode gas from the interpolar gap between the anode and cathode surfaces.

  1. Fuel Cell 101

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Don Hoffman Ship Systems & Engineering Research Division March 2011 Distribution Statement A: Approved for public release; distribution is unlimited. Fuel Cell Operation * A Fuel ...

  2. Method of making straight fuel cell tubes

    DOEpatents

    Borglum, Brian P. (Edgewood, PA)

    2001-01-01

    A method and an apparatus for making straight fuel cell tubes are disclosed. Extruded tubes comprising powders of fuel cell material and a solvent are dried by rotating the extruded tubes. The rotation process provides uniform circumferential drying which results in uniform linear shrinkage of the tubes. The resultant dried tubes are very straight, thereby eliminating subsequent straightening steps required with conventional processes. The method is particularly useful for forming inner air electrode tubes of solid oxide fuel cells.

  3. Aluminum reduction cell electrode

    DOEpatents

    Payne, J.R.

    1983-09-20

    The invention is directed to an anode-cathode structure for an electrolytic cell for the reduction of alumina wherein the structure is comprised of a carbon anode assembly which straddles a wedge-shaped refractory hard metal cathode assembly having steeply sloped cathodic surfaces, each cathodic surface being paired in essentially parallel planar relationship with an anode surface. The anode-cathode structure not only takes into account the structural weakness of refractory hard metal materials but also permits the changing of the RHM assembly during operation of the cell. Further, the anode-cathode structure enhances the removal of anode gas from the interpolar gap between the anode and cathode surfaces. 10 figs.

  4. Chalcogen catalysts for polymer electrolyte fuel cell

    DOEpatents

    Alonso-Vante, Nicolas (Buxerolles, FR); Zelenay, Piotr (Los Alamos, NM); Choi, Jong-Ho (Los Alamos, NM); Wieckowski, Andrzej (Champaign, IL); Cao, Dianxue (Urbana, IL)

    2009-09-15

    A methanol-tolerant cathode catalyst and a membrane electrode assembly for fuel cells that includes such a cathode catalyst. The cathode catalyst includes a support having at least one transition metal in elemental form and a chalcogen disposed on the support. Methods of making the cathode catalyst and membrane electrode assembly are also described.

  5. Chalcogen catalysts for polymer electrolyte fuel cell

    DOEpatents

    Zelenay, Piotr; Choi, Jong-Ho; Alonso-Vante, Nicolas; Wieckowski, Andrzej; Cao, Dianxue

    2010-08-24

    A methanol-tolerant cathode catalyst and a membrane electrode assembly for fuel cells that includes such a cathode catalyst. The cathode catalyst includes a support having at least one transition metal in elemental form and a chalcogen disposed on the support. Methods of making the cathode catalyst and membrane electrode assembly are also described.

  6. Method of fabricating electrode catalyst layers with directionally oriented carbon support for proton exchange membrane fuel cell

    DOEpatents

    Liu, Di-Jia; Yang, Junbing

    2010-07-20

    A method of making a membrane electrode assembly (MEA) having an anode and a cathode and a proton conductive membrane there between. A bundle of longitudinally aligned carbon nanotubes with a catalytically active transition metal incorporated in the nanotubes forms at least one portion of the MEA and is in contact with the membrane. A combination selected from one or more of a hydrocarbon and an organometallic compound containing an catalytically active transition metal and a nitrogen containing compound and an inert gas and a reducing gas is introduced into a first reaction zone maintained at a first reaction temperature for a time sufficient to vaporize material therein. The vaporized material is transmitted to a second reaction zone maintained at a second reaction temperature for a time sufficient to grow longitudinally aligned carbon nanotubes with a catalytically active transition metal incorporated throughout the nanotubes. The nanotubes are in contact with a portion of the MEA at production or being positioned in contact thereafter. Methods of forming a PEMFC are also disclosed.

  7. Fuel Cell Technologies Overview: 2011 Fuel Cell Seminar | Department...

    Energy.gov [DOE] (indexed site)

    Fuel Cell Seminar on November 1, 2011. Fuel Cell Technologies Overview (4.38 MB) More Documents & Publications Fuel Cell Technologies Overview: March 2012 State Energy Advisory ...

  8. DOE Fuel Cell Technologies Office: 2013 Fuel Cell Seminar and...

    Energy.gov [DOE] (indexed site)

    Overview of DOE's Fuel Cell Technologies Office presented by Sunita Satyapal at the 2013 Fuel Cell Seminar and Energy Exposition in Columbus, Ohio. DOE Fuel Cell Technologies ...

  9. Fuel Cells for Supermarkets: Cleaner Energy with Fuel Cell Combined...

    Energy.gov [DOE] (indexed site)

    smith.pdf (0 B) More Documents & Publications Fuel Cells at Supermarkets: NYSERDA's Perspective Fuel Cell Case Study Hydrogen Production and Storage for Fuel Cells: Current Status

  10. Fuel Cells

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Cells - Sandia Energy Energy Search Icon Sandia Home ... Energy Conversion Efficiency Solar Energy Wind Energy Water ... EnergyWater Nexus EnergyWater History Water Monitoring & ...

  11. In-membrane micro fuel cell

    DOEpatents

    Omosebi, Ayokunle; Besser, Ronald

    2016-09-06

    An in-membrane micro fuel cell comprises an electrically-insulating membrane that is permissive to the flow of cations, such as protons, and a pair of electrodes deposited on channels formed in the membrane. The channels are arranged as conduits for fluids, and define a membrane ridge between the channels. The electrodes are porous and include catalysts for promoting the liberation of a proton and an electron from a chemical species and/or or the recombination of a proton and an electron with a chemical specie. The fuel cell may be provided a biosensor, an electrochemical sensor, a microfluidic device, or other microscale devices fabricated in the fuel cell membrane.

  12. Fuel Cells in the States

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    in the Fuel Cells in the States States State and Regional State and Regional Initiatives ... Jennifer Gangi Jennifer Gangi Program Director Program Director Fuel Cells 2000 Fuel Cells ...

  13. EERE Fuel Cell Technologies Program

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    AudienceEvent Date EERE Fuel Cell Technologies Program Sunita Satyapal Acting Program Manager U.S. Department of Energy Fuel Cell Technologies Program Fuel Cell Project Kickoff ...

  14. DOE Fuel Cell Technologies Office

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    DOE Fuel Cell Technologies Office Fuel Cell Seminar & Energy Exposition Columbus, Ohio Dr. Sunita Satyapal Director Fuel Cell Technologies Office Energy Efficiency and Renewable ...

  15. Membrane-Electrode Structures for Low Cost Molecular Catalysts in Fuel

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Cells and Other Electrochemical Devices - Energy Innovation Portal Membrane-Electrode Structures for Low Cost Molecular Catalysts in Fuel Cells and Other Electrochemical Devices Lawrence Berkeley National Laboratory Contact LBL About This Technology Technology Marketing Summary A team of Berkeley Lab researchers has developed a technology to coat electrode surfaces with a homogeneous catalyst that has been immobilized within a polymer layer. The team demonstrated that a 3-D distributed array

  16. Fuel Cell Bus Workshop

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    ec o o es o a Energy Efficiency & Renewable Energy Fuel Cell Bus Workshop Overview and Purp pose Dimitrios Papageorgopoulos Fuel Cell Technolog gies Prog gram DOE and DOT Joint ...

  17. Breakout Group 5: Solid Oxide Fuel Cells | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    5: Solid Oxide Fuel Cells Breakout Group 5: Solid Oxide Fuel Cells Report from Breakout Group 5 of the Fuel Cell Pre-Solicitation Workshop, January 23-24, 2008 fc_pre-solicitation_workshop_sofc.pdf (49.47 KB) More Documents & Publications DOE Fuel Cell Pre-Solicitation Workshop Agenda, January 23-24, 2008, Golden, Colorado Breakout Group 2: Membrane Electrode Assemblies Solid Oxide Fuel Cell System (SOFC) Technology R&D Needs (Presentation)

  18. Fuel cell arrangement

    DOEpatents

    Isenberg, A.O.

    1987-05-12

    A fuel cell arrangement is provided wherein cylindrical cells of the solid oxide electrolyte type are arranged in planar arrays where the cells within a plane are parallel. Planes of cells are stacked with cells of adjacent planes perpendicular to one another. Air is provided to the interior of the cells through feed tubes which pass through a preheat chamber. Fuel is provided to the fuel cells through a channel in the center of the cell stack; the fuel then passes the exterior of the cells and combines with the oxygen-depleted air in the preheat chamber. 3 figs.

  19. Fuel cell arrangement

    DOEpatents

    Isenberg, Arnold O.

    1987-05-12

    A fuel cell arrangement is provided wherein cylindrical cells of the solid oxide electrolyte type are arranged in planar arrays where the cells within a plane are parallel. Planes of cells are stacked with cells of adjacent planes perpendicular to one another. Air is provided to the interior of the cells through feed tubes which pass through a preheat chamber. Fuel is provided to the fuel cells through a channel in the center of the cell stack; the fuel then passes the exterior of the cells and combines with the oxygen-depleted air in the preheat chamber.

  20. High power density fuel cell comprising an array of microchannels

    DOEpatents

    Morse, Jeffrey D.; Upadhye, Ravindra S.; Spadaccini, Christopher M.; Park, Hyung Gyu

    2013-10-15

    A fuel cell according to one embodiment includes a porous electrolyte support structure defining an array of microchannels, the microchannels including fuel and oxidant microchannels; fuel electrodes formed along some of the microchannels; and oxidant electrodes formed along other of the microchannels. A method of making a fuel cell according to one embodiment includes forming an array of walls defining microchannels therebetween using at least one of molding, stamping, extrusion, injection and electrodeposition; processing the walls to make the walls porous, thereby creating a porous electrolyte support structure; forming anode electrodes along some of the microchannels; and forming cathode electrodes along other of the microchannels. Additional embodiments are also disclosed.

  1. Micro fuel cell

    SciTech Connect

    Zook, L.A.; Vanderborgh, N.E. [Los Alamos National Lab., NM (United States); Hockaday, R. [Energy Related Devices Inc., Los Alamos, NM (United States)

    1998-12-31

    An ambient temperature, liquid feed, direct methanol fuel cell device is under development. A metal barrier layer was used to block methanol crossover from the anode to the cathode side while still allowing for the transport of protons from the anode to the cathode. A direct methanol fuel cell (DMFC) is an electrochemical engine that converts chemical energy into clean electrical power by the direct oxidation of methanol at the fuel cell anode. This direct use of a liquid fuel eliminates the need for a reformer to convert the fuel to hydrogen before it is fed into the fuel cell.

  2. Layered electrode for electrochemical cells

    DOEpatents

    Swathirajan, Swathy; Mikhail, Youssef M.

    2001-01-01

    There is provided an electrode structure comprising a current collector sheet and first and second layers of electrode material. Together, the layers improve catalyst utilization and water management.

  3. Advanced Fuel Reformer Development: Putting the 'Fuel' in Fuel Cells |

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Department of Energy Fuel Reformer Development: Putting the 'Fuel' in Fuel Cells Advanced Fuel Reformer Development: Putting the 'Fuel' in Fuel Cells Presented at the DOE-DOD Shipboard APU Workshop on March 29, 2011. apu2011_6_roychoudhury.pdf (4.83 MB) More Documents & Publications System Design - Lessons Learned, Generic Concepts, Characteristics & Impacts Fuel Cells For Transportation - 1999 Annual Progress Report Energy Conversion Team Fuel Cell Systems Annual Progress Report

  4. Fuel Cells & Alternative Fuels | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Cells & Alternative Fuels Fuel Cells & Alternative Fuels Presentation given at DEER 2006, August 20-24, 2006, Detroit, Michigan. Sponsored by the U.S. DOE's EERE FreedomCar and ...

  5. Development of alkaline fuel cells.

    SciTech Connect

    Hibbs, Michael R.; Jenkins, Janelle E.; Alam, Todd Michael; Janarthanan, Rajeswari; Horan, James L.; Caire, Benjamin R.; Ziegler, Zachary C.; Herring, Andrew M.; Yang, Yuan; Zuo, Xiaobing; Robson, Michael H.; Artyushkova, Kateryna; Patterson, Wendy; Atanassov, Plamen Borissov

    2013-09-01

    This project focuses on the development and demonstration of anion exchange membrane (AEM) fuel cells for portable power applications. Novel polymeric anion exchange membranes and ionomers with high chemical stabilities were prepared characterized by researchers at Sandia National Laboratories. Durable, non-precious metal catalysts were prepared by Dr. Plamen Atanassov's research group at the University of New Mexico by utilizing an aerosol-based process to prepare templated nano-structures. Dr. Andy Herring's group at the Colorado School of Mines combined all of these materials to fabricate and test membrane electrode assemblies for single cell testing in a methanol-fueled alkaline system. The highest power density achieved in this study was 54 mW/cm2 which was 90% of the project target and the highest reported power density for a direct methanol alkaline fuel cell.

  6. Fuel cells: A handbook (Revision 3)

    SciTech Connect

    Hirschenhofer, J.H.; Stauffer, D.B.; Engleman, R.R.

    1994-01-01

    Fuel cells are electrochemical devices that convert the chemical energy of reaction directly into electrical energy. In a typical fuel cell, gaseous fuels are fed continuously to the anode (negative electrode) compartment and an oxidant (i.e., oxygen from air) is fed continuously to the cathode (positive electrode) compartment; the electrochemical reactions take place at the electrodes to produce an electric current. A fuel cell, although having similar components and several characteristics, differs from a typical battery in several respects. The battery is an energy storage device, that is, the maximum energy that is available is determined by the amount of chemical reactant stored within the battery itself. Thus, the battery will cease to produce electrical energy when the chemical reactants are consumed (i.e., discharged). In a secondary battery, the reactants are regenerated by recharging, which involves putting energy into the battery from an external source. The fuel cell, on the other hand, is an energy conversion device which theoretically has the capability of producing electrical energy for as long as the fuel and oxidant are supplied to the electrodes. In reality, degradation or malfunction of components limits the practical operating life of fuel cells.

  7. Direct hydrocarbon fuel cells

    DOEpatents

    Barnett, Scott A.; Lai, Tammy; Liu, Jiang

    2010-05-04

    The direct electrochemical oxidation of hydrocarbons in solid oxide fuel cells, to generate greater power densities at lower temperatures without carbon deposition. The performance obtained is comparable to that of fuel cells used for hydrogen, and is achieved by using novel anode composites at low operating temperatures. Such solid oxide fuel cells, regardless of fuel source or operation, can be configured advantageously using the structural geometries of this invention.

  8. High temperature solid electrolyte fuel cell configurations and interconnections

    DOEpatents

    Isenberg, Arnold O.

    1984-01-01

    High temperature fuel cell configurations and interconnections are made including annular cells having a solid electrolyte sandwiched between thin film electrodes. The cells are electrically interconnected along an elongated axial outer surface.

  9. Fuel cells and fuel cell catalysts

    DOEpatents

    Masel, Richard I.; Rice, Cynthia A.; Waszczuk, Piotr; Wieckowski, Andrzej

    2006-11-07

    A direct organic fuel cell includes a formic acid fuel solution having between about 10% and about 95% formic acid. The formic acid is oxidized at an anode. The anode may include a Pt/Pd catalyst that promotes the direct oxidation of the formic acid via a direct reaction path that does not include formation of a CO intermediate.

  10. Tubular screen electrical connection support for solid oxide fuel cells

    DOEpatents

    Tomlins, Gregory W.; Jaszcar, Michael P.

    2002-01-01

    A solid oxide fuel assembly is made of fuel cells (16, 16', 18, 24, 24', 26), each having an outer interconnection layer (36) and an outer electrode (28), which are disposed next to each other with rolled, porous, hollow, electrically conducting metal mesh conductors (20, 20') between the fuel cells, connecting the fuel cells at least in series along columns (15, 15') and where there are no metal felt connections between any fuel cells.

  11. Minimizing electrode contamination in an electrochemical cell

    DOEpatents

    Kim, Yu Seung; Zelenay, Piotr; Johnston, Christina

    2014-12-09

    An electrochemical cell assembly that is expected to prevent or at least minimize electrode contamination includes one or more getters that trap a component or components leached from a first electrode and prevents or at least minimizes them from contaminating a second electrode.

  12. DOE Fuel Cell Subprogram (Presentation)

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    most relevant fuel cell research, development, and ... available at www.hydrogen.energy.gov) Product Non-purpose * ... c Fuel Cell Seminar Abstracts, 2004, p. 290. 13 Fuel ...

  13. Fuel cell generator

    DOEpatents

    Isenberg, Arnold O.

    1983-01-01

    High temperature solid oxide electrolyte fuel cell generators which allow controlled leakage among plural chambers in a sealed housing. Depleted oxidant and fuel are directly reacted in one chamber to combust remaining fuel and preheat incoming reactants. The cells are preferably electrically arranged in a series-parallel configuration.

  14. Method of making electrodes for electrochemical cell

    DOEpatents

    Kaun, Thomas D.; Kilsdonk, Dennis J.

    1983-01-01

    A method of making an electrode for an electrochemical cell in which particulate electrode-active material is mixed with a liquid organic carrier chemically inert with respect to the electrode-active material, mixing the liquid carrier to form an extrudable slurry. The liquid carrier is present in an amount of from about 10 to about 50 percent by volume of the slurry, and then the carrier is removed from the slurry leaving the electrode-active material.

  15. Development of portable fuel cells

    SciTech Connect

    Nakatou, K.; Sumi, S.; Nishizawa, N.

    1996-12-31

    Sanyo Electric has been concentrating on developing a marketable portable fuel cell using phosphoric acid fuel cells (PAFC). Due to the fact that this power source uses PAFC that operate at low temperature around 100{degrees} C, they are easier to handle compared to conventional fuel cells that operate at around 200{degrees} C , they can also be expected to provide extended reliable operation because corrosion of the electrode material and deterioration of the electrode catalyst are almost completely nonexistent. This power source is meant to be used independently and stored at room temperature. When it is started up, it generates electricity itself using its internal load to raise the temperature. As a result, the phosphoric acid (the electolyte) absorbs the reaction water when the temperature starts to be raised (around room temperature). At the same time the concentration and volume of the phosphoric acid changes, which may adversely affect the life time of the cell. We have studied means for starting, operating PAFC stack using methods that can simply evaluate changes in the concentration of the electrolyte in the stack with the aim of improving and extending cell life and report on them in this paper.

  16. Reforming of fuel inside fuel cell generator

    DOEpatents

    Grimble, R.E.

    1988-03-08

    Disclosed is an improved method of reforming a gaseous reformable fuel within a solid oxide fuel cell generator, wherein the solid oxide fuel cell generator has a plurality of individual fuel cells in a refractory container, the fuel cells generating a partially spent fuel stream and a partially spent oxidant stream. The partially spent fuel stream is divided into two streams, spent fuel stream 1 and spent fuel stream 2. Spent fuel stream 1 is burned with the partially spent oxidant stream inside the refractory container to produce an exhaust stream. The exhaust stream is divided into two streams, exhaust stream 1 and exhaust stream 2, and exhaust stream 1 is vented. Exhaust stream 2 is mixed with spent fuel stream 2 to form a recycle stream. The recycle stream is mixed with the gaseous reformable fuel within the refractory container to form a fuel stream which is supplied to the fuel cells. Also disclosed is an improved apparatus which permits the reforming of a reformable gaseous fuel within such a solid oxide fuel cell generator. The apparatus comprises a mixing chamber within the refractory container, means for diverting a portion of the partially spent fuel stream to the mixing chamber, means for diverting a portion of exhaust gas to the mixing chamber where it is mixed with the portion of the partially spent fuel stream to form a recycle stream, means for injecting the reformable gaseous fuel into the recycle stream, and means for circulating the recycle stream back to the fuel cells. 1 fig.

  17. Reforming of fuel inside fuel cell generator

    DOEpatents

    Grimble, Ralph E.

    1988-01-01

    Disclosed is an improved method of reforming a gaseous reformable fuel within a solid oxide fuel cell generator, wherein the solid oxide fuel cell generator has a plurality of individual fuel cells in a refractory container, the fuel cells generating a partially spent fuel stream and a partially spent oxidant stream. The partially spent fuel stream is divided into two streams, spent fuel stream I and spent fuel stream II. Spent fuel stream I is burned with the partially spent oxidant stream inside the refractory container to produce an exhaust stream. The exhaust stream is divided into two streams, exhaust stream I and exhaust stream II, and exhaust stream I is vented. Exhaust stream II is mixed with spent fuel stream II to form a recycle stream. The recycle stream is mixed with the gaseous reformable fuel within the refractory container to form a fuel stream which is supplied to the fuel cells. Also disclosed is an improved apparatus which permits the reforming of a reformable gaseous fuel within such a solid oxide fuel cell generator. The apparatus comprises a mixing chamber within the refractory container, means for diverting a portion of the partially spent fuel stream to the mixing chamber, means for diverting a portion of exhaust gas to the mixing chamber where it is mixed with the portion of the partially spent fuel stream to form a recycle stream, means for injecting the reformable gaseous fuel into the recycle stream, and means for circulating the recycle stream back to the fuel cells.

  18. Methods of Conditioning Direct Methanol Fuel Cells - Energy Innovation

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Portal Find More Like This Return to Search Methods of Conditioning Direct Methanol Fuel Cells Los Alamos National Laboratory Contact LANL About This Technology Technology Marketing Summary Methods for conditioning the membrane electrode assembly of a direct methanol fuel cell ("DMFC") are disclosed. In a first method, an electrical current of polarity opposite to that used in a functioning direct methanol fuel cell is passed through the anode surface of the membrane electrode

  19. California Fuel Cell Partnership: Alternative Fuels Research...

    Energy.gov [DOE] (indexed site)

    This presentation by Chris White of the California Fuel Cell Partnership provides information about alternative fuels research. cafcpinitiativescall.pdf (133.97 KB) More ...

  20. Negative electrodes for lithium cells and batteries

    DOEpatents

    Vaughey, John T.; Fransson, Linda M.; Thackeray, Michael M.

    2005-02-15

    A negative electrode is disclosed for a non-aqueous electrochemical cell. The electrode has an intermetallic compound as its basic structural unit with the formula M.sub.2 M' in which M and M' are selected from two or more metal elements including Si, and the M.sub.2 M' structure is a Cu.sub.2 Sb-type structure. Preferably M is Cu, Mn and/or Li, and M' is Sb. Also disclosed is a non-aqueous electrochemical cell having a negative electrode of the type described, an electrolyte and a positive electrode. A plurality of cells may be arranged to form a battery.

  1. Three-Electrode Metal Oxide Reduction Cell

    DOEpatents

    Dees, Dennis W.; Ackerman, John P.

    2005-06-28

    A method of electrochemically reducing a metal oxide to the metal in an electrochemical cell is disclosed along with the cell. Each of the anode and cathode operate at their respective maximum reaction rates. An electrolyte and an anode at which oxygen can be evolved, and a cathode including a metal oxide to be reduced are included as is a third electrode with independent power supplies connecting the anode and the third electrode and the cathode and the third electrode.

  2. Three-electrode metal oxide reduction cell

    DOEpatents

    Dees, Dennis W.; Ackerman, John P.

    2008-08-12

    A method of electrochemically reducing a metal oxide to the metal in an electrochemical cell is disclosed along with the cell. Each of the anode and cathode operate at their respective maximum reaction rates. An electrolyte and an anode at which oxygen can be evolved, and a cathode including a metal oxide to be reduced are included as is a third electrode with independent power supplies connecting the anode and the third electrode and the cathode and the third electrode.

  3. Fuel cell market applications

    SciTech Connect

    Williams, M.C.

    1995-12-31

    This is a review of the US (and international) fuel cell development for the stationary power generation market. Besides DOE, GRI, and EPRI sponsorship, the US fuel cell program has over 40% cost-sharing from the private sector. Support is provided by user groups with over 75 utility and other end-user members. Objectives are to develop and demonstrate cost-effective fuel cell power generation which can initially be commercialized into various market applications using natural gas fuel by the year 2000. Types of fuel cells being developed include PAFC (phosphoric acid), MCFC (molten carbonate), and SOFC (solid oxide); status of each is reported. Potential international applications are reviewed also. Fuel cells are viewed as a force in dispersed power generation, distributed power, cogeneration, and deregulated industry. Specific fuel cell attributes are discussed: Fuel cells promise to be one of the most reliable power sources; they are now being used in critical uninterruptible power systems. They need hydrogen which can be generated internally from natural gas, coal gas, methanol landfill gas, or other fuels containing hydrocarbons. Finally, fuel cell development and market applications in Japan are reviewed briefly.

  4. Molten carbonate fuel cell

    DOEpatents

    Kaun, Thomas D.; Smith, James L.

    1987-01-01

    A molten electrolyte fuel cell with an array of stacked cells and cell enclosures isolating each cell except for access to gas manifolds for the supply of fuel or oxidant gas or the removal of waste gas, the cell enclosures collectively providing an enclosure for the array and effectively avoiding the problems of electrolyte migration and the previous need for compression of stack components, the fuel cell further including an inner housing about and in cooperation with the array enclosure to provide a manifold system with isolated chambers for the supply and removal of gases. An external insulated housing about the inner housing provides thermal isolation to the cell components.

  5. Molten carbonate fuel cell

    DOEpatents

    Kaun, T.D.; Smith, J.L.

    1986-07-08

    A molten electrolyte fuel cell is disclosed with an array of stacked cells and cell enclosures isolating each cell except for access to gas manifolds for the supply of fuel or oxidant gas or the removal of waste gas. The cell enclosures collectively provide an enclosure for the array and effectively avoid the problems of electrolyte migration and the previous need for compression of stack components. The fuel cell further includes an inner housing about and in cooperation with the array enclosure to provide a manifold system with isolated chambers for the supply and removal of gases. An external insulated housing about the inner housing provides thermal isolation to the cell components.

  6. Fuel Cell Technologies Budget

    SciTech Connect

    EERE

    2012-03-16

    The Fuel Cell Technologies Office receives appropriations from Energy and Water Development. The offices's major activities and budget are outlined in this Web page.

  7. Opportunities with Fuel Cells

    Reports and Publications

    1994-01-01

    The concept for fuel cells was discovered in the nineteenth century. Today, units incorporating this technology are becoming commercially available for cogeneration applications.

  8. Fuel Cell Case Study

    Office of Energy Efficiency and Renewable Energy (EERE)

    Presented at the Clean Energy States Alliance and U.S. Department of Energy Webinar: Fuel Cells for Supermarkets, April 4, 2011.

  9. Hydrogen Fuel Cells

    Publication and Product Library

    The fuel cell an energy conversion device that can efficiently capture and use the power of hydrogen is the key to making it happen.

  10. Hydrogen Fuel Cells

    Publication and Product Library

    The fuel cell — an energy conversion device that can efficiently capture and use the power of hydrogen — is the key to making it happen.

  11. Fuel cell membranes and crossover prevention

    DOEpatents

    Masel, Richard I.; York, Cynthia A.; Waszczuk, Piotr; Wieckowski, Andrzej

    2009-08-04

    A membrane electrode assembly for use with a direct organic fuel cell containing a formic acid fuel includes a solid polymer electrolyte having first and second surfaces, an anode on the first surface and a cathode on the second surface and electrically linked to the anode. The solid polymer electrolyte has a thickness t:.gtoreq..times..times..times..times. ##EQU00001## where C.sub.f is the formic acid fuel concentration over the anode, D.sub.f is the effective diffusivity of the fuel in the solid polymer electrolyte, K.sub.f is the equilibrium constant for partition coefficient for the fuel into the solid polymer electrolyte membrane, I is Faraday's constant n.sub.f is the number of electrons released when 1 molecule of the fuel is oxidized, and j.sub.f.sup.c is an empirically determined crossover rate of fuel above which the fuel cell does not operate.

  12. Fuel Cell Demonstration Program

    SciTech Connect

    Gerald Brun

    2006-09-15

    In an effort to promote clean energy projects and aid in the commercialization of new fuel cell technologies the Long Island Power Authority (LIPA) initiated a Fuel Cell Demonstration Program in 1999 with six month deployments of Proton Exchange Membrane (PEM) non-commercial Beta model systems at partnering sites throughout Long Island. These projects facilitated significant developments in the technology, providing operating experience that allowed the manufacturer to produce fuel cells that were half the size of the Beta units and suitable for outdoor installations. In 2001, LIPA embarked on a large-scale effort to identify and develop measures that could improve the reliability and performance of future fuel cell technologies for electric utility applications and the concept to establish a fuel cell farm (Farm) of 75 units was developed. By the end of October of 2001, 75 Lorax 2.0 fuel cells had been installed at the West Babylon substation on Long Island, making it the first fuel cell demonstration of its kind and size anywhere in the world at the time. Designed to help LIPA study the feasibility of using fuel cells to operate in parallel with LIPA's electric grid system, the Farm operated 120 fuel cells over its lifetime of over 3 years including 3 generations of Plug Power fuel cells (Lorax 2.0, Lorax 3.0, Lorax 4.5). Of these 120 fuel cells, 20 Lorax 3.0 units operated under this Award from June 2002 to September 2004. In parallel with the operation of the Farm, LIPA recruited government and commercial/industrial customers to demonstrate fuel cells as on-site distributed generation. From December 2002 to February 2005, 17 fuel cells were tested and monitored at various customer sites throughout Long Island. The 37 fuel cells operated under this Award produced a total of 712,635 kWh. As fuel cell technology became more mature, performance improvements included a 1% increase in system efficiency. Including equipment, design, fuel, maintenance, installation

  13. Fuel cell stack with passive air supply

    DOEpatents

    Ren, Xiaoming; Gottesfeld, Shimshon

    2006-01-17

    A fuel cell stack has a plurality of polymer electrolyte fuel cells (PEFCs) where each PEFC includes a rectangular membrane electrode assembly (MEA) having a fuel flow field along a first axis and an air flow field along a second axis perpendicular to the first axis, where the fuel flow field is long relative to the air flow field. A cathode air flow field in each PEFC has air flow channels for air flow parallel to the second axis and that directly open to atmospheric air for air diffusion within the channels into contact with the MEA.

  14. Pt/Pd electrocatalyst electrons for fuel cells

    DOEpatents

    Stonehart, P.

    1981-11-03

    This invention relates to improved electrochemical cells and to novel electrodes for use therein. In particular, the present invention comprises a fuel cell used primarily for the consumption of impure hydrogen fuels containing carbon monoxide or carbonaceous fuels where the electrode in contact with the fuel is not substantially poisoned by carbon monoxide. The anode of the fuel cell comprises a Pd/Pt alloy supported on a graphitized or partially graphitized carbon material. Fuel cells which comprise as essential elements a fuel electrode, an oxidizing electrode, and an electrolyte between said electrodes are devices for the direct production of electricity through the electrochemical combustion of a fuel and oxidant. These devices are recognized for their high efficiency as energy conversion units, since unlike conventional combustion engines, they are not subject to the limitations of the Carnot heat cycle. It is the primary object of the present invention to provide an electrode having high electrochemical activity for an electrochemical cell. It is another object of the present invention to provide an electrode having an electro-catalyst which is highly resistant to the corrosive environment of an electrochemical cell.

  15. Fuel cell with electrolyte feed system

    DOEpatents

    Feigenbaum, Haim (Highland Park, NJ)

    1984-01-01

    A fuel cell having a pair of electrodes at the sites of electrochemical reactions of hydrogen and oxygen and a phosphoric acid electrolyte provided with an electrolyte supporting structure in the form of a laminated matrix assembly disposed between the electrodes. The matrix assembly is formed of a central layer disposed between two outer layers, each being permeable to the flow of the electrolyte. The central layer is provided with relatively large pores while the outer layers are provided with relatively small pores. An external reservoir supplies electrolyte via a feed means to the central layer to compensate for changes in electrolyte volume in the matrix assembly during the operation of fuel cell.

  16. Miniature ceramic fuel cell

    DOEpatents

    Lessing, Paul A.; Zuppero, Anthony C.

    1997-06-24

    A miniature power source assembly capable of providing portable electricity is provided. A preferred embodiment of the power source assembly employing a fuel tank, fuel pump and control, air pump, heat management system, power chamber, power conditioning and power storage. The power chamber utilizes a ceramic fuel cell to produce the electricity. Incoming hydro carbon fuel is automatically reformed within the power chamber. Electrochemical combustion of hydrogen then produces electricity.

  17. Apparatus tube configuration and mounting for solid oxide fuel cells

    DOEpatents

    Zymboly, Gregory E. (Murrysville, PA)

    1993-01-01

    A generator apparatus (10) is made containing long, hollow, tubular, fuel cells containing an inner air electrode (64), an outer fuel electrode (56), and solid electrolyte (54) therebetween, placed between a fuel distribution board (29) and a board (32) which separates the combustion chamber (16) from the generating chamber (14), where each fuel cell has an insertable open end and in insertable, plugged, closed end (44), the plugged end being inserted into the fuel distribution board (29) and the open end being inserted through the separator board (32) where the plug (60) is completely within the fuel distribution board (29).

  18. Composite electrode for use in electrochemical cells

    DOEpatents

    Vanderborgh, N.E.; Huff, J.R.; Leddy, J.

    1987-10-16

    A porous composite electrode for use in electrochemical cells. The electrode has a first face and a second face defining a relatively thin section therebetween. The electrode is comprised of an ion conducting material, an electron conducting material, and an electrocatalyst. The volume concentration of the ion conducting material is greatest at the first face and is decreased across the section, while the volume concentration of the electron conducting material is greatest at the second face and decreases across the section of the electrode. Substantially all of the electrocatalyst is positioned within the electrode section in a relatively narrow zone where the rate of electron transport of the electrode is approximately equal to the rate of ion transport of the electrode. 4 figs., 1 tab.

  19. Composite electrode for use in electrochemical cells

    DOEpatents

    Vanderborgh, Nicholas E.; Huff, James R.; Leddy, Johna

    1989-01-01

    A porous composite electrode for use in electrochemical cells. The electrode has a first face and a second face defining a relatively thin section therebetween. The electrode is comprised of an ion conducting material, an electron conducting material, and an electrocatalyst. The volume concentration of the ion conducting material is greatest at the first face and is decreased across the section, while the volume concentration of the electron conducting material is greatest at the second face and decreases across the section of the electrode. Substantially all of the electrocatalyst is positioned within the electrode section in a relatively narrow zone where the rate of electron transport of the electrode is approximately equal to the rate of ion transport of the electrode.

  20. Validation of Electrode Materials and Cell Chemistries

    Energy.gov [DOE]

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

  1. Solid oxide fuel cell generator

    DOEpatents

    Di Croce, A.M.; Draper, R.

    1993-11-02

    A solid oxide fuel cell generator has a plenum containing at least two rows of spaced apart, annular, axially elongated fuel cells. An electrical conductor extending between adjacent rows of fuel cells connects the fuel cells of one row in parallel with each other and in series with the fuel cells of the adjacent row. 5 figures.

  2. Solid oxide fuel cell generator

    DOEpatents

    Di Croce, A. Michael; Draper, Robert

    1993-11-02

    A solid oxide fuel cell generator has a plenum containing at least two rows of spaced apart, annular, axially elongated fuel cells. An electrical conductor extending between adjacent rows of fuel cells connects the fuel cells of one row in parallel with each other and in series with the fuel cells of the adjacent row.

  3. Tilted fuel cell apparatus

    DOEpatents

    Cooper, John F.; Cherepy, Nerine; Krueger, Roger L.

    2005-04-12

    Bipolar, tilted embodiments of high temperature, molten electrolyte electrochemical cells capable of directly converting carbon fuel to electrical energy are disclosed herein. The bipolar, tilted configurations minimize the electrical resistance between one cell and others connected in electrical series. The tilted configuration also allows continuous refueling of carbon fuel.

  4. NREL: Hydrogen and Fuel Cells Research - Early Fuel Cell Market

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Demonstrations Early Fuel Cell Market Demonstrations Photo of fuel cell backup power system in outdoor setting. Photo of fuel cell forklifts in warehouse setting. Fuel cell backup power systems offer longer continuous runtimes and greater durability than traditional batteries in harsh outdoor environments. For specialty vehicles such as forklifts, fuel cells can be a cost-competitive alternative to traditional lead-acid batteries. Learn More Subscribe to the biannual Fuel Cell and Hydrogen

  5. Fuel Cells Fact Sheet | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Fact Sheet Fact sheet produced by the Fuel Cell Technologies Office describing hydrogen fuel cell technology. Fuel Cells More Documents & Publications Hydrogen and Fuel Cell...

  6. Fuel cell tubes and method of making same

    DOEpatents

    Borglum, Brian P.

    1999-11-30

    A method of manufacturing porous ceramic tubes for fuel cells with improved properties and higher manufacturing yield is disclosed. The method involves extruding a closed end fuel cell tube, such as an air electrode of a solid oxide fuel cell, in which the closed end also functions as the sintering support. The resultant fuel cell tube has a superior porosity distribution which allows improved diffusion of oxygen at the closed end of the tube during operation of the fuel cell. Because this region has the highest current density, performance enhancement and improved reliability of the fuel cell tube result. Furthermore, the higher manufacturing yield associated with the present method decreases the overall fuel cell cost. A method of manufacturing porous ceramic tubes for fuel cells with improved properties and higher manufacturing yield is disclosed. The method involves extruding a closed end fuel cell tube, such as an air electrode of a solid oxide fuel cell, in which the closed end also functions as the sintering support. The resultant fuel cell tube has a superior porosity distribution which allows improved diffusion of oxygen at the closed end of the tube during operation of the fuel cell. Because this region has the highest current density, performance enhancement and improved reliability of the fuel cell tube result. Furthermore, the higher manufacturing yield associated with the present method decreases the overall fuel cell cost.

  7. Fuel Cell Animation- Fuel Cell Stack (Text Version)

    Energy.gov [DOE]

    This text version of the fuel cell animation demonstrates how a fuel cell uses hydrogen to produce electricity, with only water and heat as byproducts.

  8. Fuel Cell Animation- Fuel Cell Components (Text Version)

    Energy.gov [DOE]

    This text version of the fuel cell animation demonstrates how a fuel cell uses hydrogen to produce electricity, with only water and heat as byproducts.

  9. DOE Fuel Cell Technologies Office Record 14014: Fuel Cell System...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    14014 Date: September 25, 2014 Title: Fuel Cell System Cost - 2014 Update to: Record 14012 ... polymer electrolyte membrane (PEM) fuel cell system based on next-generation ...

  10. NREL: Hydrogen and Fuel Cells Research - Stationary Fuel Cell...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Stationary Fuel Cell Units Greater Than 100 kW Achieve 2015 Target for Electrical ... Center (NFCTEC) has validated the electrical efficiency of stationary fuel cells for ...

  11. Microbial fuel cell treatment of fuel process wastewater (Patent...

    Office of Scientific and Technical Information (OSTI)

    Microbial fuel cell treatment of fuel process wastewater Title: Microbial fuel cell treatment of fuel process wastewater The present invention is directed to a method for cleansing ...

  12. Microbial fuel cell treatment of fuel process wastewater (Patent...

    Office of Scientific and Technical Information (OSTI)

    Microbial fuel cell treatment of fuel process wastewater Title: Microbial fuel cell treatment of fuel process wastewater You are accessing a document from the Department of ...

  13. Hydrogen Fueling for Current and Anticipated Fuel Cell Electric...

    Energy.gov [DOE] (indexed site)

    Hydrogen Fueling for Current and Anticipated Fuel Cell Electric Vehicles (FCEVs)" held on June 24, 2014. Hydrogen Fueling for Current and Anticipated Fuel Cell Electric Vehicles ...

  14. Corrugated Membrane Fuel Cell Structures

    SciTech Connect

    Grot, Stephen

    2013-09-30

    One of the most challenging aspects of traditional PEM fuel cell stacks is the difficulty achieving the platinum catalyst utilization target of 0.2 gPt/kWe set forth by the DOE. Good catalyst utilization can be achieved with state-of-the-art catalyst coated membranes (CCM) when low catalyst loadings (<0.3 mg/cm2) are used at a low current. However, when low platinum loadings are used, the peak power density is lower than conventional loadings, requiring a larger total active area and a larger bipolar plate. This results in a lower overall stack power density not meeting the DOE target. By corrugating the fuel cell membrane electrode structure, Ion Power?s goal is to realize both the Pt utilization targets as well as the power density targets of the DOE. This will be achieved by demonstrating a fuel cell single cell (50 cm2) with a twofold increase in the membrane active area over the geometric area of the cell by corrugating the MEA structure. The corrugating structure must be able to demonstrate the target properties of < 10 mOhm-cm2 electrical resistance at > 20 psi compressive strength over the active area, in combination with offering at least 80% of power density that can be achieved by using the same MEA in a flat plate structure. Corrugated membrane fuel cell structures also have the potential to meet DOE power density targets by essentially packaging more membrane area into the same fuel cell volume as compared to conventional stack constructions.

  15. DOE Hydrogen & Fuel Cell Overview

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    t t 1 | Fuel Cell Technologies Program eere.energy.gov Fuel Cell Technologies Program DOE Hydrogen & Fuel Cell Overview Dr. Sunita Satyapal Program Manager U S D f E Overview U.S. ...

  16. Fuel cell stack arrangements

    DOEpatents

    Kothmann, Richard E.; Somers, Edward V.

    1982-01-01

    Arrangements of stacks of fuel cells and ducts, for fuel cells operating with separate fuel, oxidant and coolant streams. An even number of stacks are arranged generally end-to-end in a loop. Ducts located at the juncture of consecutive stacks of the loop feed oxidant or fuel to or from the two consecutive stacks, each individual duct communicating with two stacks. A coolant fluid flows from outside the loop, into and through cooling channels of the stack, and is discharged into an enclosure duct formed within the loop by the stacks and seals at the junctures at the stacks.

  17. Fuel cell water transport

    DOEpatents

    Vanderborgh, Nicholas E.; Hedstrom, James C.

    1990-01-01

    The moisture content and temperature of hydrogen and oxygen gases is regulated throughout traverse of the gases in a fuel cell incorporating a solid polymer membrane. At least one of the gases traverses a first flow field adjacent the solid polymer membrane, where chemical reactions occur to generate an electrical current. A second flow field is located sequential with the first flow field and incorporates a membrane for effective water transport. A control fluid is then circulated adjacent the second membrane on the face opposite the fuel cell gas wherein moisture is either transported from the control fluid to humidify a fuel gas, e.g., hydrogen, or to the control fluid to prevent excess water buildup in the oxidizer gas, e.g., oxygen. Evaporation of water into the control gas and the control gas temperature act to control the fuel cell gas temperatures throughout the traverse of the fuel cell by the gases.

  18. Electrochemical cell and negative electrode therefor

    DOEpatents

    Kaun, Thomas D.

    1982-01-01

    A secondary electrochemical cell with the positive and negative electrodes separated by a molten salt electrolyte with the negative electrode comprising a particulate mixture of lithium-aluminum alloy and electrolyte and an additive selected from graphitized carbon, Raney iron or mixtures thereof. The lithium-aluminum alloy is present in the range of from about 45 to about 80 percent by volume of the negative electrode, and the electrolyte is present in an amount not less than about 10 percent by volume of the negative electrode. The additive of graphitized carbon is present in the range of from about 1 to about 10 percent by volume of the negative electrode, and the Raney iron additive is present in the range of from about 3 to about 10 percent by volume of the negative electrode.

  19. Fuel Cell Technologies Program Overview

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    CSD Workshop Washington, DC Fuel Cell Technologies Program Overview Dr. Sunita Satyapal Director, Fuel Cell Technologies Office Energy Efficiency and Renewable Energy U.S. Department of Energy 3/20/2012 2 | Fuel Cell Technologies Program eere.energy.gov Overview Fuel Cells - An Emerging Global Industry Clean Energy Patent Growth Index [1] shows that fuel cell patents lead in the clean energy field with over 950 fuel cell patents issued in 2011. * Nearly double the second place holder, solar,

  20. Fuel Cell Technologies Program Overview

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Non-Metallic Materials Meeting Washington, DC Fuel Cell Technologies Program Overview Dr. Sunita Satyapal U.S. Department of Energy Fuel Cell Technologies Program Program Manager 10/17/2012 2 | Fuel Cell Technologies Program eere.energy.gov Overview Fuel Cells - An Emerging Global Industry Clean Energy Patent Growth Index [1] shows that fuel cell patents lead in the clean energy field with over 950 fuel cell patents issued in 2011. * Nearly double the second place holder, solar, which has ~540

  1. Internet Fuel Cells Forum

    SciTech Connect

    Sudhoff, Frederick A.

    1996-08-01

    The rapid development and integration of the Internet into the mainstream of professional life provides the fuel cell industry with the opportunity to share new ideas with unprecedented capabilities. The U.S. Department of Energy's (DOE's) Morgantown Energy Technology Center (METC) has undertaken the task to maintain a Fuel Cell Forum on the Internet. Here, members can exchange ideas and information pertaining to fuel cell technologies. The purpose of this forum is to promote a better understanding of fuel cell concepts, terminology, processes, and issues relating to commercialization of fuel cell power technology. The Forum was developed by METC to provide those interested with fuel cell conference information for its current concept of exchanging ideas and information pertaining to fuel cells. Last August, the Forum expanded to an on-line and world-wide network. There are 250 members, and membership is growing at a rate of several new subscribers per week. The forum currently provides updated conference information and interactive information exchange. Forum membership is encouraged from utilities, industry, universities, and government. Because of the public nature of the internet, business sensitive, confidential, or proprietary information should not be placed on this system. The Forum is unmoderated; therefore, the views and opinions of authors expressed in the forum do not necessarily state or reflect those of the U.S. government or METC.

  2. Manufacturing Fuel Cell Manhattan Project

    Office of Energy Efficiency and Renewable Energy (EERE)

    This document communicates the major fuel cell manufacturing cost drivers, gaps, and industry best practices, as well as recommends manufacturing projects to advance fuel cell manufacturing.

  3. Hydrogen and Fuel Cell Activities

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Activities Mr. Pete Devlin U.S. Department of Energy Fuel Cell Technologies Program Market Transformation Manager Stationary Fuel Cell Applications First National Bank of Omaha...

  4. Fuel Cell Technologies Office: Publications

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Fuel Cell Technologies Office EERE Fuel Cell Technologies Office Share this resource Publications Advanced Search Browse by Topic Mail Requests Help Feature featured product...

  5. Comparison of Fuel Cell Technologies

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    More Information More information on the Fuel Cell Technologies Offce is available at http:www.hydrogenandfuelcells.energy.gov. Fuel Cell Type Common Electrolyte Operating ...

  6. Fuel Cell Technologies Program Overview

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    IEA HIA Hydrogen Safety Stakeholder Workshop Bethesda, Maryland Fuel Cell Technologies Program Overview Dr. Sunita Satyapal U.S. Department of Energy Fuel Cell Technologies Program ...

  7. Manufacturing Fuel Cell Manhattan Project

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Manufacturing Fuel Cell Manhattan Project Presented by the Benchmarking and Best Practices ... in providing valued information on affordable and implementable fuel cell technology. ...

  8. Fuel Cell Technologies Program Overview

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    The Administration's Clean Energy Goals 2 3 Fuel Cells Address Our Key Energy Challenges Increasing Energy Efficiency and Resource Diversity Fuel cells offer a highly efficient ...

  9. DOE Fuel Cell Technology Office

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Fuel Cell Technology Office - Sandia Energy Energy Search Icon Sandia Home Locations ... SunShot Grand Challenge: Regional Test Centers DOE Fuel Cell Technology Office Home...

  10. Fuel cell development for transportation: Catalyst development

    SciTech Connect

    Doddapaneni, N.; Ingersoll, D.

    1996-12-31

    Fuel cells are being considered as alternative power sources for transportation and stationary applications. The degradation of commonly used electrode catalysts (e.g. Pt, Ag, and others) and corrosion of carbon substrates are making commercialization of fuel cells incorporating present day technologies economically problematic. Furthermore, due to the instability of the Pt catalyst, the performance of fuel cells declines on long-term operation. When methanol is used as the fuel, a voltage drop, as well as significant thermal management problems can be encountered, the later being due to chemical oxidation of methanol at the platinized carbon at the cathode. Though extensive work was conducted on platinized electrodes for both the oxidation and reduction reactions, due to the problems mentioned above, fuel cells have not been fully developed for widespread commercial use. Several investigators have previously evaluated metal macrocyclic complexes as alternative catalysts to Pt and Pt/Ru in fuel cells. Unfortunately, though they have demonstrated catalytic activity, these materials were found to be unstable on long term use in the fuel cell environment. In order to improve the long-term stability of metal macrocyclic complexes, we have chemically bonded these complexes to the carbon substrate, thereby enhancing their catalytic activity as well as their chemical stability in the fuel cell environment. We have designed, synthesized, and evaluated these catalysts for O{sub 2} reduction, H{sub 2} oxidation, and direct methanol oxidation in Proton Exchange Membrane (PEM) and aqueous carbonate fuel cells. These catalysts exhibited good catalytic activity and long-term stability. In this paper we confine our discussion to the initial performance results of some of these catalysts in H{sub 2}/O{sub 2} PEM fuel cells, including their long-term performance characteristics as well as CO poisoning effects on these catalysts.

  11. Bipolar fuel cell

    DOEpatents

    McElroy, James F.

    1989-01-01

    The present invention discloses an improved fuel cell utilizing an ion transporting membrane having a catalytic anode and a catalytic cathode bonded to opposite sides of the membrane, a wet-proofed carbon sheet in contact with the cathode surface opposite that bonded to the membrane and a bipolar separator positioned in electrical contact with the carbon sheet and the anode of the adjacent fuel cell. Said bipolar separator and carbon sheet forming an oxidant flowpath, wherein the improvement comprises an electrically conductive screen between and in contact with the wet-proofed carbon sheet and the bipolar separator improving the product water removal system of the fuel cell.

  12. Air breathing direct methanol fuel cell

    DOEpatents

    Ren, Xiaoming

    2002-01-01

    An air breathing direct methanol fuel cell is provided with a membrane electrode assembly, a conductive anode assembly that is permeable to air and directly open to atmospheric air, and a conductive cathode assembly that is permeable to methanol and directly contacting a liquid methanol source.

  13. Densified edge seals for fuel cell components

    DOEpatents

    DeCasperis, Anthony J.; Roethlein, Richard J.; Breault, Richard D.

    1982-01-01

    A porous fuel cell component, such as an electrode substrate, has a densified edge which forms an improved gas seal during operation when soaked with electrolyte. The edges are made from the same composition as the rest of the component and are made by compressing an increased thickness of this material along the edges during the fabrication process.

  14. Screen Electrode Materials and Cell Chemistries | Department...

    Energy.gov [DOE] (indexed site)

    Annual Merit Review and Peer Evaluation Meeting, May 18-22, 2009 -- Washington D.C. esp24lu.pdf (1.35 MB) More Documents & Publications Screen Electrode Materials & Cell ...

  15. Solid Oxide Fuel Cells FAQs

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Solid Oxide Fuel Cells FAQs faq-header-big.jpg SOLID OXIDE FUEL CELLS - BASICS Q: What is a fuel cell? A: A fuel cell is a power generation device that converts the chemical energy of a fuel and oxidant directly into electrical energy, with heat and water as byproducts. Since fuel cells produce electricity through an electrochemical reaction and not through a combustion process, they are inherently more efficient and environmentally friendly than conventional electric power generation processes.

  16. Formic acid fuel cells and catalysts

    DOEpatents

    Masel, Richard I.; Larsen, Robert; Ha, Su Yun

    2010-06-22

    An exemplary fuel cell of the invention includes a formic acid fuel solution in communication with an anode (12, 134), an oxidizer in communication with a cathode (16, 135) electrically linked to the anode, and an anode catalyst that includes Pd. An exemplary formic acid fuel cell membrane electrode assembly (130) includes a proton-conducting membrane (131) having opposing first (132) and second surfaces (133), a cathode catalyst on the second membrane surface, and an anode catalyst including Pd on the first surface.

  17. Formic acid fuel cells and catalysts

    DOEpatents

    Masel, Richard I.; Larsen, Robert; Ha, Su Yun

    2010-06-22

    An exemplary fuel cell of the invention includes a formic acid fuel solution in communication with an anode (12, 134), an oxidizer in communication with a cathode (16, 135) electrically linked to the anode, and an anode catalyst that includes Pd. An exemplary formic acid fuel cell membrane electrode assembly (130) includes a proton-conducting membrane (131) having opposing first (132) and second surfaces (133), a cathode catalyst on the second membrane surface, and an anode catalyst including Pd on the first surface.

  18. Inactive end cell assembly for fuel cells for improved electrolyte management and electrical contact

    DOEpatents

    Yuh, Chao-Yi; Farooque, Mohammad; Johnsen, Richard

    2007-04-10

    An assembly for storing electrolyte in a carbonate fuel cell is provided. The combination of a soft, compliant and resilient cathode current collector and an inactive anode part including a foam anode in each assembly mitigates electrical contact loss during operation of the fuel cell stack. In addition, an electrode reservoir in the positive end assembly and an electrode sink in the negative end assembly are provided, by which ribbed and flat cathode members inhibit electrolyte migration in the fuel cell stack.

  19. Fuel cell generator energy dissipator

    DOEpatents

    Veyo, Stephen Emery; Dederer, Jeffrey Todd; Gordon, John Thomas; Shockling, Larry Anthony

    2000-01-01

    An apparatus and method are disclosed for eliminating the chemical energy of fuel remaining in a fuel cell generator when the electrical power output of the fuel cell generator is terminated. During a generator shut down condition, electrically resistive elements are automatically connected across the fuel cell generator terminals in order to draw current, thereby depleting the fuel

  20. DOE Fuel Cell Technologies Program Record, Record # 11003, Fuel...

    Energy Saver

    Program Record, Record 11003, Fuel Cell Stack Durability DOE Fuel Cell Technologies Program Record, Record 11003, Fuel Cell Stack Durability Dated May 3, 2012, this program ...

  1. Hydrogen Fuel Cell Demonstration ...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Brothers, Ltd., at their facility in the Port of Honolulu. The pilot hydrogen fuel cell unit will be used in place of a diesel generator currently used to provide power for...

  2. Ceramic Fuel Cells (SOFC)

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    H2/FC Manufacturing R&D Workshop J. David Carter, PhD Chemical Sciences and Engineering Argonne National Laboratory Thursday, August 11, 2011 Ceramic Fuel Cells (SOFC) Manufacturing Fuel Cell Manhattan Project: * Joe Bonadies - Delphi * Rick Kerr - Delphi * David Carter - Argonne * Aaron Crumm - AMI * Randy Petri - Versa Power * Jolyon Rawson - Acumentrics * Marc Gietter - Army-CERDEC * Scott Swartz - NexTech Materials * Eric Stanfield - NIST * Mike Ulsh - NREL / DOE * Matt Steinbroner -

  3. Financing Fuel Cells

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    organized by: ◦ US Department of Energy Fuel Cell Technologies Program ◦ Clean Energy States Alliance ◦ Technology Transition Corporation  Also briefing papers and materials for state policymakers and others on the Hydrogen and Fuel Cells Project page at www.cleanenergystates.org 2  A nonprofit coalition of state and sub-national clean energy funds and programs working together to develop and promote clean energy technologies and markets. www.cleanenergystates.org 3  For more

  4. Fuel Cells at NASCAR

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Fuel Cells at NASCAR Ned Stetson U.S. Department of Energy Fuel Cell Technologies Office Catherine Kummer - NASCAR Green Norm Bessette - Acumentrics Question and Answer * Please type your question into the question box hydrogenandfuelcells.energy.gov 3 Selected Milestone Accomplishments * 5 years of NASCAR Green with now most impactful sustainability platform in history of U.S. based on numbers; most impactful in sports * 75% of avid NASCAR fans are now aware of NASCAR green and believe the

  5. Fuel Cells in Telecommunications

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Fuel Cells Simply Powerful Fuel Cells in Telecommunications J. Blanchard December 2011 - ~ ReliOn Overview Markets Backup, grid supplement, and off grid power systems for critical communications infrastructure spanning telecom, transportation, government, utility, and OEM customers throughout the world. Products Purpose designed product portfolio of 175W to 2.5kW building blocks providing solutions up to 30kW for target markets. Broad range of hydrogen storage solutions supported by major

  6. Compliant fuel cell system

    DOEpatents

    Bourgeois, Richard Scott; Gudlavalleti, Sauri

    2009-12-15

    A fuel cell assembly comprising at least one metallic component, at least one ceramic component and a structure disposed between the metallic component and the ceramic component. The structure is configured to have a lower stiffness compared to at least one of the metallic component and the ceramic component, to accommodate a difference in strain between the metallic component and the ceramic component of the fuel cell assembly.

  7. Maritime Hydrogen Fuel Cell project

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ... SunShot Grand Challenge: Regional Test Centers Maritime Hydrogen Fuel Cell project HomeTag:Maritime Hydrogen Fuel Cell project - Pete Devlin, of the Department of Energy's Fuel ...

  8. Fuel Cells | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Fuel Cells Fuel Cells A fuel cell uses the chemical energy of hydrogen or another fuel to cleanly and efficiently produce electricity. If hydrogen is the fuel, electricity, water, and heat are the only products. Fuel cells are unique in terms of the variety of their potential applications; they can provide power for systems as large as a utility power station and as small as a laptop computer. Why Study Fuel Cells Fuel cells can be used in a wide range of applications, including transportation,

  9. Fuel dissipater for pressurized fuel cell generators

    DOEpatents

    Basel, Richard A.; King, John E.

    2003-11-04

    An apparatus and method are disclosed for eliminating the chemical energy of fuel remaining in a pressurized fuel cell generator (10) when the electrical power output of the fuel cell generator is terminated during transient operation, such as a shutdown; where, two electrically resistive elements (two of 28, 53, 54, 55) at least one of which is connected in parallel, in association with contactors (26, 57, 58, 59), a multi-point settable sensor relay (23) and a circuit breaker (24), are automatically connected across the fuel cell generator terminals (21, 22) at two or more contact points, in order to draw current, thereby depleting the fuel inventory in the generator.

  10. Fuel Cells and Renewable Gaseous Fuels | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Fuel Cells and Renewable Gaseous Fuels Fuel Cells and Renewable Gaseous Fuels Breakout Session 3-C: Renewable Gaseous Fuels Fuel Cells and Renewable Gaseous Fuels Sarah Studer, ORISE Fellow-Fuel Cell Technologies Office, U.S. Department of Energy studer_bioenergy_2015.pdf (2 MB) More Documents & Publications Workshop on Gas Clean-Up for Fuel Cell Applications U.S Department of Energy Fuel Cell Technologies Office Overview: 2015 Smithsonian Science Education Academies for Teachers Novel

  11. Solid oxide fuel cell operable over wide temperature range

    DOEpatents

    Baozhen, Li (Essex Junction, VT); Ruka, Roswell J. (Pittsburgh, PA); Singhal, Subhash C. (Murrysville, PA)

    2001-01-01

    Solid oxide fuel cells having improved low-temperature operation are disclosed. In one embodiment, an interfacial layer of terbia-stabilized zirconia is located between the air electrode and electrolyte of the solid oxide fuel cell. The interfacial layer provides a barrier which controls interaction between the air electrode and electrolyte. The interfacial layer also reduces polarization loss through the reduction of the air electrode/electrolyte interfacial electrical resistance. In another embodiment, the solid oxide fuel cell comprises a scandia-stabilized zirconia electrolyte having high electrical conductivity. The scandia-stabilized zirconia electrolyte may be provided as a very thin layer in order to reduce resistance. The scandia-stabilized electrolyte is preferably used in combination with the terbia-stabilized interfacial layer. The solid oxide fuel cells are operable over wider temperature ranges and wider temperature gradients in comparison with conventional fuel cells.

  12. 2009 Fuel Cell Market Report

    SciTech Connect

    Vincent, Bill; Gangi, Jennifer; Curtin, Sandra; Delmont, Elizabeth

    2010-11-01

    Fuel cells are electrochemical devices that combine hydrogen and oxygen to produce electricity, water, and heat. Unlike batteries, fuel cells continuously generate electricity, as long as a source of fuel is supplied. Moreover, fuel cells do not burn fuel, making the process quiet, pollution-free and two to three times more efficient than combustion. Fuel cell systems can be a truly zero-emission source of electricity, if the hydrogen is produced from non-polluting sources. Global concerns about climate change, energy security, and air pollution are driving demand for fuel cell technology. More than 630 companies and laboratories in the United States are investing $1 billion a year in fuel cells or fuel cell component technologies. This report provides an overview of trends in the fuel cell industry and markets, including product shipments, market development, and corporate performance. It also provides snapshots of select fuel cell companies, including general.

  13. Molecular-scale, Three-dimensional Non-Platinum Group Metal Electrodes...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Group Metal Electrodes for Catalysis of Fuel Cell Reactions Molecular-scale, Three-dimensional Non-Platinum Group Metal Electrodes for Catalysis of Fuel Cell Reactions ...

  14. Seventh Edition Fuel Cell Handbook

    SciTech Connect

    NETL

    2004-11-01

    Provides an overview of fuel cell technology and research projects. Discusses the basic workings of fuel cells and their system components, main fuel cell types, their characteristics, and their development status, as well as a discussion of potential fuel cell applications.

  15. Breakthrough Vehicle Development - Fuel Cells

    Publication and Product Library

    Document describing research and development program for fuel cell power systems for transportation applications.

  16. Fuel Cell with Metal Screen Flow-Field - Energy Innovation Portal

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    plate fuel cells.DescriptionA polymer electrolyte membrane (PEM) fuel cell is provided with electrodes supplied with a reactant on each side of a catalyzed membrane assembly (CMA). ...

  17. Low hydrostatic head electrolyte addition to fuel cell stacks

    DOEpatents

    Kothmann, Richard E.

    1983-01-01

    A fuel cell and system for supply electrolyte, as well as fuel and an oxidant to a fuel cell stack having at least two fuel cells, each of the cells having a pair of spaced electrodes and a matrix sandwiched therebetween, fuel and oxidant paths associated with a bipolar plate separating each pair of adjacent fuel cells and an electrolyte fill path for adding electrolyte to the cells and wetting said matrices. Electrolyte is flowed through the fuel cell stack in a back and forth fashion in a path in each cell substantially parallel to one face of opposite faces of the bipolar plate exposed to one of the electrodes and the matrices to produce an overall head uniformly between cells due to frictional pressure drop in the path for each cell free of a large hydrostatic head to thereby avoid flooding of the electrodes. The bipolar plate is provided with channels forming paths for the flow of the fuel and oxidant on opposite faces thereof, and the fuel and the oxidant are flowed along a first side of the bipolar plate and a second side of the bipolar plate through channels formed into the opposite faces of the bipolar plate, the fuel flowing through channels formed into one of the opposite faces and the oxidant flowing through channels formed into the other of the opposite faces.

  18. Fuel Processors for PEM Fuel Cells

    SciTech Connect

    Levi T. Thompson

    2008-08-08

    Fuel cells are being developed to power cleaner, more fuel efficient automobiles. The fuel cell technology favored by many automobile manufacturers is PEM fuel cells operating with H2 from liquid fuels like gasoline and diesel. A key challenge to the commercialization of PEM fuel cell based powertrains is the lack of sufficiently small and inexpensive fuel processors. Improving the performance and cost of the fuel processor will require the development of better performing catalysts, new reactor designs and better integration of the various fuel processing components. These components and systems could also find use in natural gas fuel processing for stationary, distributed generation applications. Prototype fuel processors were produced, and evaluated against the Department of Energy technical targets. Significant advances were made by integrating low-cost microreactor systems, high activity catalysts, π-complexation adsorbents, and high efficiency microcombustor/microvaporizers developed at the University of Michigan. The microreactor system allowed (1) more efficient thermal coupling of the fuel processor operations thereby minimizing heat exchanger requirements, (2) improved catalyst performance due to optimal reactor temperature profiles and increased heat and mass transport rates, and (3) better cold-start and transient responses.

  19. Fuel Cell Systems | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Cells » Fuel Cell Systems Fuel Cell Systems The design of fuel cell systems is complex, and can vary significantly depending upon fuel cell type and application. However, several basic components are found in many fuel cell systems: Fuel cell stack Fuel processor Power conditioners Air compressors Humidifiers Fuel Cell Stack The fuel cell stack is the heart of a fuel cell power system. It generates electricity in the form of direct current (DC) from electro-chemical reactions that take place in

  20. Fuel cell system

    DOEpatents

    Early, Jack; Kaufman, Arthur; Stawsky, Alfred

    1982-01-01

    A fuel cell system is comprised of a fuel cell module including sub-stacks of series-connected fuel cells, the sub-stacks being held together in a stacked arrangement with cold plates of a cooling means located between the sub-stacks to function as electrical terminals. The anode and cathode terminals of the sub-stacks are connected in parallel by means of the coolant manifolds which electrically connect selected cold plates. The system may comprise a plurality of the fuel cell modules connected in series. The sub-stacks are designed to provide a voltage output equivalent to the desired voltage demand of a low voltage, high current DC load such as an electrolytic cell to be driven by the fuel cell system. This arrangement in conjunction with switching means can be used to drive a DC electrical load with a total voltage output selected to match that of the load being driven. This arrangement eliminates the need for expensive voltage regulation equipment.

  1. Fuel processor for fuel cell power system

    DOEpatents

    Vanderborgh, Nicholas E.; Springer, Thomas E.; Huff, James R.

    1987-01-01

    A catalytic organic fuel processing apparatus, which can be used in a fuel cell power system, contains within a housing a catalyst chamber, a variable speed fan, and a combustion chamber. Vaporized organic fuel is circulated by the fan past the combustion chamber with which it is in indirect heat exchange relationship. The heated vaporized organic fuel enters a catalyst bed where it is converted into a desired product such as hydrogen needed to power the fuel cell. During periods of high demand, air is injected upstream of the combustion chamber and organic fuel injection means to burn with some of the organic fuel on the outside of the combustion chamber, and thus be in direct heat exchange relation with the organic fuel going into the catalyst bed.

  2. DOE Fuel Cell Pre-Solicitation Workshop - Breakout Group 1: Catalysts...

    Energy.gov [DOE] (indexed site)

    Breakout Group 1: Catalysts and Supports DOE Fuel Cell Pre-Solicitation Workshop - Breakout Group 5: Long-Term Innovative Technologies Breakout Group 2: Membrane Electrode ...

  3. Fuel Cell Project Selected for First Ever Technology-to-Market...

    Energy.gov [DOE] (indexed site)

    catalyst materials to develop advanced, high-performance, and durable polymer electrolyte membrane electrode assemblies for fuel cell and electrolysis applications. ...

  4. DOE Fuel Cell Pre-Solicitation Workshop - Breakout Group 2: MEAs...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    America Mark Debe 3M Emory DeCastro BASF Fuel Cell Mohammad Enayotullah Trenergi Corporation ... of proton transport in electrodes * Theoretical limitations of PEM conductivity vs. ...

  5. Fuel cell end plate structure

    DOEpatents

    Guthrie, Robin J.; Katz, Murray; Schroll, Craig R.

    1991-04-23

    The end plates (16) of a fuel cell stack (12) are formed of a thin membrane. Pressure plates (20) exert compressive load through insulation layers (22, 26) to the membrane. Electrical contact between the end plates (16) and electrodes (50, 58) is maintained without deleterious making and breaking of electrical contacts during thermal transients. The thin end plate (16) under compressive load will not distort with a temperature difference across its thickness. Pressure plate (20) experiences a low thermal transient because it is insulated from the cell. The impact on the end plate of any slight deflection created in the pressure plate by temperature difference is minimized by the resilient pressure pad, in the form of insulation, therebetween.

  6. Energy 101: Fuel Cell Technology | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Fuel Cell Technology Energy 101: Fuel Cell Technology

  7. Solid polymer MEMS-based fuel cells

    DOEpatents

    Jankowski, Alan F.; Morse, Jeffrey D.

    2008-04-22

    A micro-electro-mechanical systems (MEMS) based thin-film fuel cells for electrical power applications. The MEMS-based fuel cell may be of a solid oxide type (SOFC), a solid polymer type (SPFC), or a proton exchange membrane type (PEMFC), and each fuel cell basically consists of an anode and a cathode separated by an electrolyte layer. The electrolyte layer can consist of either a solid oxide or solid polymer material, or proton exchange membrane electrolyte materials may be used. Additionally catalyst layers can also separate the electrodes (cathode and anode) from the electrolyte. Gas manifolds are utilized to transport the fuel and oxidant to each cell and provide a path for exhaust gases. The electrical current generated from each cell is drawn away with an interconnect and support structure integrated with the gas manifold. The fuel cells utilize integrated resistive heaters for efficient heating of the materials. By combining MEMS technology with thin-film deposition technology, thin-film fuel cells having microflow channels and full-integrated circuitry can be produced that will lower the operating temperature an will yield an order of magnitude greater power density than the currently known fuel cells.

  8. Solid oxide MEMS-based fuel cells

    DOEpatents

    Jankowksi, Alan F.; Morse, Jeffrey D.

    2007-03-13

    A micro-electro-mechanical systems (MEMS) based thin-film fuel cells for electrical power applications. The MEMS-based fuel cell may be of a solid oxide type (SOFC), a solid polymer type (SPFC), or a proton exchange membrane type (PEMFC), and each fuel cell basically consists of an anode and a cathode separated by an electrolyte layer. The electrolyte layer can consist of either a solid oxide or solid polymer material, or proton exchange membrane electrolyte materials may be used. Additionally catalyst layers can also separate the electrodes (cathode and anode) from the electrolyte. Gas manifolds are utilized to transport the fuel and oxidant to each cell and provide a path for exhaust gases. The electrical current generated from each cell is drawn away with an interconnect and support structure integrated with the gas manifold. The fuel cells utilize integrated resistive heaters for efficient heating of the materials. By combining MEMS technology with thin-film deposition technology, thin-film fuel cells having microflow channels and full-integrated circuitry can be produced that will lower the operating temperature an will yield an order of magnitude greater power density than the currently known fuel cells.

  9. Fuel cell system combustor

    DOEpatents

    Pettit, William Henry

    2001-01-01

    A fuel cell system including a fuel reformer heated by a catalytic combustor fired by anode and cathode effluents. The combustor includes a turbulator section at its input end for intimately mixing the anode and cathode effluents before they contact the combustors primary catalyst bed. The turbulator comprises at least one porous bed of mixing media that provides a tortuous path therethrough for creating turbulent flow and intimate mixing of the anode and cathode effluents therein.

  10. Fuel cell system configurations

    DOEpatents

    Kothmann, Richard E.; Cyphers, Joseph A.

    1981-01-01

    Fuel cell stack configurations having elongated polygonal cross-sectional shapes and gaskets at the peripheral faces to which flow manifolds are sealingly affixed. Process channels convey a fuel and an oxidant through longer channels, and a cooling fluid is conveyed through relatively shorter cooling passages. The polygonal structure preferably includes at least two right angles, and the faces of the stack are arranged in opposite parallel pairs.

  11. DOE perspective on fuel cells in transportation

    SciTech Connect

    Kost, R.

    1996-04-01

    Fuel cells are one of the most promising technologies for meeting the rapidly growing demand for transportation services while minimizing adverse energy and environmental impacts. This paper reviews the benefits of introducing fuel cells into the transportation sector; in addition to dramatically reduced vehicle emissions, fuel cells offer the flexibility than use petroleum-based or alternative fuels, have significantly greater energy efficiency than internal combustion engines, and greatly reduce noise levels during operation. The rationale leading to the emphasis on proton-exchange-membrane fuel cells for transportation applications is reviewed as are the development issues requiring resolution to achieve adequate performance, packaging, and cost for use in automobiles. Technical targets for power density, specific power, platinum loading on the electrodes, cost, and other factors that become increasingly more demanding over time have been established. Fuel choice issues and pathways to reduced costs and to a renewable energy future are explored. One such path initially introduces fuel cell vehicles using reformed gasoline while-on-board hydrogen storage technology is developed to the point of allowing adequate range (350 miles) and refueling convenience. This scenario also allows time for renewable hydrogen production technologies and the required supply infrastructure to develop. Finally, the DOE Fuel Cells in Transportation program is described. The program, whose goal is to establish the technology for fuel cell vehicles as rapidly as possible, is being implemented by means of the United States Fuel Cell Alliance, a Government-industry alliance that includes Detroit`s Big Three automakers, fuel cell and other component suppliers, the national laboratories, and universities.

  12. DOE Hydrogen & Fuel Cell Overview

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    20 active fuel cell buses 60 fueling stations In the U.S., there are currently: 9 ... NAS study, "Transitions to Alternative Transportation Technologies: A Focus ...

  13. Air breathing direct methanol fuel cell

    DOEpatents

    Ren, Xiaoming; Gottesfeld, Shimshon

    2002-01-01

    An air breathing direct methanol fuel cell is provided with a membrane electrode assembly, a conductive anode assembly that is permeable to air and directly open to atmospheric air, and a conductive cathode assembly that is permeable to methanol and directly contacting a liquid methanol source. Water loss from the cell is minimized by making the conductive cathode assembly hydrophobic and the conductive anode assembly hydrophilic.

  14. Fuel cell with electrolyte matrix assembly

    DOEpatents

    Kaufman, Arthur; Pudick, Sheldon; Wang, Chiu L.

    1988-01-01

    This invention is directed to a fuel cell employing a substantially immobilized electrolyte imbedded therein and having a laminated matrix assembly disposed between the electrodes of the cell for holding and distributing the electrolyte. The matrix assembly comprises a non-conducting fibrous material such as silicon carbide whiskers having a relatively large void-fraction and a layer of material having a relatively small void-fraction.

  15. Internal reforming fuel cell assembly with simplified fuel feed

    SciTech Connect

    Farooque, Mohammad; Novacco, Lawrence J.; Allen, Jeffrey P.

    2001-01-01

    A fuel cell assembly in which fuel cells adapted to internally reform fuel and fuel reformers for reforming fuel are arranged in a fuel cell stack. The fuel inlet ports of the fuel cells and the fuel inlet ports and reformed fuel outlet ports of the fuel reformers are arranged on one face of the fuel cell stack. A manifold sealing encloses this face of the stack and a reformer fuel delivery system is arranged entirely within the region between the manifold and the one face of the stack. The fuel reformer has a foil wrapping and a cover member forming with the foil wrapping an enclosed structure.

  16. International Stationary Fuel Cell Demonstration | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Stationary Fuel Cell Demonstration International Stationary Fuel Cell Demonstration This presentation by John Vogel of Plug Power was given at the New Fuel Cell Projects Meeting in February 2007. new_fc_vogel_plugpower.pdf (1.72 MB) More Documents & Publications PBI-Phosphoric Acid Based Membrane Electrode Assemblies: Status Update Demonstration of Next Generation PEM CHP Systems for Global Markets Using PBI Membrane Technology Open Discussion of Freeze Related Issues

  17. New Membranes for PEM Fuel Cells | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    PEM Fuel Cells New Membranes for PEM Fuel Cells Presentation on New Membranes for PEM Fuel Cells to the High Temperature Membrane Working Group Meeting held in Arlington, Virginia, May 26,2005. htmwg05_hamrock.pdf (394.94 KB) More Documents & Publications Some durability considerations for proton exchange membranes Analysis of the Durability of PEM FC Membrane Electrode Assemblies in Automotive Applications Processing-Performance Relationships for Perfluorosulfonate Ionomer Membrane

  18. DOE Technical Targets for Polymer Electrolyte Membrane Fuel Cell Components

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    | Department of Energy Polymer Electrolyte Membrane Fuel Cell Components DOE Technical Targets for Polymer Electrolyte Membrane Fuel Cell Components These tables list the U.S. Department of Energy (DOE) technical targets for polymer electrolyte membrane (PEM) fuel cell components: membrane electrode assemblies, membranes, electrocatalysts, and bipolar plates. These targets have been developed with input from the U.S. DRIVE Partnership, which includes automotive and energy companies, and

  19. Development of PEM fuel cell technology at international fuel cells

    SciTech Connect

    Wheeler, D.J.

    1996-04-01

    The PEM technology has not developed to the level of phosphoric acid fuel cells. Several factors have held the technology development back such as high membrane cost, sensitivity of PEM fuel cells to low level of carbon monoxide impurities, the requirement to maintain full humidification of the cell, and the need to pressurize the fuel cell in order to achieve the performance targets. International Fuel Cells has identified a hydrogen fueled PEM fuel cell concept that leverages recent research advances to overcome major economic and technical obstacles.

  20. Careers in Fuel Cell Technologies

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Careers In Fuel Cell Technologies Existing and emerging fuel cell applications hold large job growth potential. Fuel cells are among the promising technologies that are expected to transform our energy sector. They represent highly efficient and fuel- flexible technologies that offer diverse benefits. For example, fuel cells can be used in a wide range of applications- from portable electronics, to combined heat and power (CHP) units used for distributed electricity generation, to passenger

  1. Method of making chalcogen catalysts for polymer electrolyte fuel cells

    DOEpatents

    Choi, Jong-Ho; Zelenay, Piotr; Wieckowski, Andrzej; Cao, Dianxue

    2010-12-14

    A method of making an electrode catalyst material using aqueous solutions. The electrode catalyst material includes a support comprising at least one transition metal and at least one chalcogen disposed on a surface of the transition metal. The method includes reducing a metal powder, mixing the metal powder with an aqueous solution containing at least one inorganic compound of the chalcogen to form a mixture, and providing a reducing agent to the mixture to form nanoparticles of the electrode catalyst. The electrode catalyst may be used in a membrane electrode assembly for a fuel cell.

  2. Layered electrodes for lithium cells and batteries

    DOEpatents

    Johnson, Christopher S.; Thackeray, Michael M.; Vaughey, John T.; Kahaian, Arthur J.; Kim, Jeom-Soo

    2008-04-15

    Lithium metal oxide compounds of nominal formula Li.sub.2MO.sub.2, in which M represents two or more positively charged metal ions, selected predominantly and preferably from the first row of transition metals are disclosed herein. The Li.sub.2MO.sub.2 compounds have a layered-type structure, which can be used as positive electrodes for lithium electrochemical cells, or as a precursor for the in-situ electrochemical fabrication of LiMO.sub.2 electrodes. The Li.sub.2MO.sub.2 compounds of the invention may have additional functions in lithium cells, for example, as end-of-discharge indicators, or as negative electrodes for lithium cells.

  3. California Fuel Cell Partnership: Alternative Fuels Research | Department

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    of Energy Fuel Cell Partnership: Alternative Fuels Research California Fuel Cell Partnership: Alternative Fuels Research This presentation by Chris White of the California Fuel Cell Partnership provides information about alternative fuels research. cafcp_initiatives_call.pdf (133.97 KB) More Documents & Publications The Department of Energy Hydrogen and Fuel Cells Program Plan Vehicle Technologies Office Merit Review 2015: Alternative Fuel Station Locator Fuel Cell Buses in U.S. Transit

  4. Fuel Cells Go Live

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    green h y d r o g e n f u e l i n g POWer Fuel Cells Go live A closer look at the requirements to create a hydrogen-based warehouse M anagers of distribution centers are always on the lookout for new ways to gain competitive advantage through increased operational efficiency, productivity and worker safety. Around North America, some are finding success by integrating commercially available hydrogen fuel cell systems into their lift truck fleets. For operations with large fleets of electric lift

  5. Treatment of Fuel Process Wastewater Using Fuel Cells - Energy...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Hydrogen and Fuel Cell Hydrogen and Fuel Cell Find More Like This Return to Search Treatment of Fuel Process Wastewater Using Fuel Cells Oak Ridge National Laboratory Contact ORNL ...

  6. Lithium metal oxide electrodes for lithium cells and batteries...

    Office of Scientific and Technical Information (OSTI)

    Title: Lithium metal oxide electrodes for lithium cells and batteries A lithium metal oxide positive electrode for a non-aqueous lithium cell is disclosed. The cell is prepared in ...

  7. Heteroatom incorporated coke for electrochemical cell electrode

    DOEpatents

    Lewis, Irwin Charles (Strongsville, OH); Greinke, Ronald Alfred (Medina, OH)

    1997-01-01

    This invention relates to an electrode for a coke/alkali metal electrochemical cell comprising: (a) calcined coke particles: (i) that contain at least 0.5 weight percent of nitrogen heteroatoms and at least 1.0 weight percent sulfur heteroatoms, and (ii) that have an average particle size from 2 microns to 40 microns with essentially no particles being greater than 50 microns. (b) a binder This invention also relates to a coke/alkali metal electrochemical cell comprising: (a) an electrode as described above, (b) a non-aqueous electrolytic solution comprising an organic aprotic solvent and an electrically conductive salt, and (c) a counterelectrode.

  8. Heteroatom incorporated coke for electrochemical cell electrode

    DOEpatents

    Lewis, I.C.; Greinke, R.A.

    1997-06-17

    This invention relates to an electrode for a coke/alkali metal electrochemical cell comprising: (a) calcined coke particles: (1) that contain at least 0.5 weight percent of nitrogen heteroatoms and at least 1.0 weight percent sulfur heteroatoms, and (2) that have an average particle size from 2 microns to 40 microns with essentially no particles being greater than 50 microns and (b) a binder. This invention also relates to a coke/alkali metal electrochemical cell comprising: (a) an electrode as described above, (b) a non-aqueous electrolytic solution comprising an organic aprotic solvent and an electrically conductive salt, and (c) a counterelectrode. 5 figs.

  9. High power density fuel cell comprising an array of microchannels

    DOEpatents

    Sopchak, David A; Morse, Jeffrey D; Upadhye, Ravindra S; Kotovsky, Jack; Graff, Robert T

    2014-05-06

    A phosphoric acid fuel cell according to one embodiment includes an array of microchannels defined by a porous electrolyte support structure extending between bottom and upper support layers, the microchannels including fuel and oxidant microchannels; fuel electrodes formed along some of the microchannels; and air electrodes formed along other of the microchannels. A method of making a phosphoric acid fuel cell according to one embodiment includes etching an array of microchannels in a substrate, thereby forming walls between the microchannels; processing the walls to make the walls porous, thereby forming a porous electrolyte support structure; forming anode electrodes along some of the walls; forming cathode electrodes along other of the walls; and filling the porous electrolyte support structure with a phosphoric acid electrolyte. Additional embodiments are also disclosed.

  10. Hydrogen and Fuel Cell Activities

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    5/2011 eere.energy.gov 5 th International Conference on Polymer Batteries & Fuel Cells Argonne, Illinois Hydrogen and Fuel Cell Activities Dr. Sunita Satyapal U.S. Department of Energy Fuel Cell Technologies Program Program Manager August 4, 2011 2 | Fuel Cell Technologies Program Source: US DOE 8/5/2011 eere.energy.gov Fuel Cells: Benefits & Market Potential The Role of Fuel Cells Key Benefits Very High Efficiency Reduced CO 2 Emissions * 35-50%+ reductions for CHP systems (>80% with

  11. Electrochemical sensor for monitoring electrochemical potentials of fuel cell components

    DOEpatents

    Kunz, Harold R.; Breault, Richard D.

    1993-01-01

    An electrochemical sensor comprised of wires, a sheath, and a conduit can be utilized to monitor fuel cell component electric potentials during fuel cell shut down or steady state. The electrochemical sensor contacts an electrolyte reservoir plate such that the conduit wicks electrolyte through capillary action to the wires to provide water necessary for the electrolysis reaction which occurs thereon. A voltage is applied across the wires of the electrochemical sensor until hydrogen evolution occurs at the surface of one of the wires, thereby forming a hydrogen reference electrode. The voltage of the fuel cell component is then determined with relation to the hydrogen reference electrode.

  12. Significant Cost Improvement of Li-Ion Cells Through Non-NMP Electrode

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Coating, Direct Separator Coating, and Fast Formation Technologies | Department of Energy Significant Cost Improvement of Li-Ion Cells Through Non-NMP Electrode Coating, Direct Separator Coating, and Fast Formation Technologies Significant Cost Improvement of Li-Ion Cells Through Non-NMP Electrode Coating, Direct Separator Coating, and Fast Formation Technologies 2012 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting

  13. Compact fuel cell

    DOEpatents

    Jacobson, Craig; DeJonghe, Lutgard C.; Lu, Chun

    2010-10-19

    A novel electrochemical cell which may be a solid oxide fuel cell (SOFC) is disclosed where the cathodes (144, 140) may be exposed to the air and open to the ambient atmosphere without further housing. Current collector (145) extends through a first cathode on one side of a unit and over the unit through the cathode on the other side of the unit and is in electrical contact via lead (146) with housing unit (122 and 124). Electrical insulator (170) prevents electrical contact between two units. Fuel inlet manifold (134) allows fuel to communicate with internal space (138) between the anodes (154 and 156). Electrically insulating members (164 and 166) prevent the current collector from being in electrical contact with the anode.

  14. Electrochemical cell having cylindrical electrode elements

    DOEpatents

    Nelson, Paul A. (Wheaton, IL); Shimotake, Hiroshi (Hinsdale, IL)

    1982-01-01

    A secondary, high temperature electrochemical cell especially adapted for lithium alloy negative electrodes, transition metal chalcogenide positive electrodes and alkali metal halide or alkaline earth metal halide electrolyte is disclosed. The cell is held within an elongated cylindrical container in which one of the active materials is filled around the outside surfaces of a plurality of perforate tubular current collectors along the length of the container. Each of the current collector tubes contain a concentric tubular layer of electrically insulative ceramic as an interelectrode separator. The active material of opposite polarity in elongated pin shape is positioned longitudinally within the separator layer. A second electrically conductive tube with perforate walls can be swagged or otherwise bonded to the outer surface of the pin as a current collector and the electrically insulative ceramic layer can be coated or otherwise layered onto the outer surface of this second current collector. Alternatively, the central pin electrode can include an axial core as a current collector.

  15. Gore Fuel Cell Technologies | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Gore Fuel Cell Technologies Jump to: navigation, search Name: Gore Fuel Cell Technologies Place: Elkton, Maryland Zip: 21922-1488 Product: Gore Fuel Cell Technologies supplies the...

  16. Hydra Fuel Cell Corporation | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Fuel Cell Corporation Jump to: navigation, search Name: Hydra Fuel Cell Corporation Place: Beaverton, Oregon Product: Holding company for American Security Resources' fuel cell...

  17. Cornell Fuel Cell Institute | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Cornell Fuel Cell Institute Jump to: navigation, search Name: Cornell Fuel Cell Institute Place: Ithaca, New York Zip: 14850 Product: The Cornell Fuel Cell Institute (CFCI)...

  18. Fuel Cell Power | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Fuel Cell Power Place: United Kingdom Product: Information provider of fuel cells and their supporting infrastructure. References: Fuel Cell Power1 This article is a stub. You...

  19. US Fuel Cell Council | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    US Fuel Cell Council Place: Washington DC, Washington, DC Zip: Washington Product: US Fuel Cell Council is a membership association of fuel cell industry dedicated to fostering the...

  20. Cabot Fuel Cells | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Cabot Fuel Cells Jump to: navigation, search Name: Cabot Fuel Cells Place: Albuquerque, New Mexico Zip: 87113 Product: Cabot develops and manufactures advanced fuel cell...

  1. Hydrogen and Fuel Cells Success Stories

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    71 Hydrogen and Fuel Cells Success Stories en Doosan Fuel Cell Takes Closed Plant to Full Production http:energy.goveeresuccess-storiesarticlesdoosan-fuel-cell-takes-closed-p...

  2. Financing Fuel Cells | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Fuel Cells Financing Fuel Cells Presented at the Clean Energy States Alliance and U.S. Department of Energy Webinar: Financing Fuel Cell Installations, August 30, 2011. ...

  3. Canadian Fuel Cell Commercialization Roadmap Update: Progress...

    OpenEI (Open Energy Information) [EERE & EIA]

    Fuel Cell Commercialization Roadmap Update: Progress of Canada's Hydrogen and Fuel Cell Industry Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Canadian Fuel Cell...

  4. DOE Hydrogen and Fuel Cell Overview

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Fuel Cell Technologies Program DOE Hydrogen & Fuel Cell Overview Dr. Sunita Satyapal Program Manager U.S. Department of Energy Fuel Cell Technologies Program January 5, 2011 2 | ...

  5. DOE Hydrogen and Fuel Cell Overview

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    DOE Hydrogen & Fuel Cell Overview Dr. Sunita Satyapal Program Manager U.S. Department of Energy Fuel Cell Technologies Program DOECESATTC Hydrogen and Fuel Cells Webinar December ...

  6. Overview of Hydrogen & Fuel Cell Activities

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Source: US DOE 2252011 eere.energy.gov Overview of Hydrogen & Fuel Cell Activities FUEL CELL TECHNOLOGIES PROGRAM IPHE - Stationary Fuel Cell Workshop Rick Farmer U.S. ...

  7. Method of making MEA for PEM/SPE fuel cell

    DOEpatents

    Hulett, Jay S.

    2000-01-01

    A method of making a membrane-electrode-assembly (MEA) for a PEM/SPE fuel cell comprising applying a slurry of electrode-forming material directly onto a membrane-electrolyte film. The slurry comprises a liquid vehicle carrying catalyst particles and a binder for the catalyst particles. The membrane-electrolyte is preswollen by contact with the vehicle before the electrode-forming slurry is applied to the membrane-electrolyte. The swollen membrane-electrolyte is constrained against shrinking in the "x" and "y" directions during drying. Following assembly of the fuel cell, the MEA is rehydrated inside the fuel cell such that it swells in the "z" direction for enhanced electrical contact with contiguous electrically conductive components of the fuel cell.

  8. Fuel cell generator

    DOEpatents

    Makiel, Joseph M.

    1985-01-01

    A high temperature solid electrolyte fuel cell generator comprising a housing means defining a plurality of chambers including a generator chamber and a combustion products chamber, a porous barrier separating the generator and combustion product chambers, a plurality of elongated annular fuel cells each having a closed end and an open end with the open ends disposed within the combustion product chamber, the cells extending from the open end through the porous barrier and into the generator chamber, a conduit for each cell, each conduit extending into a portion of each cell disposed within the generator chamber, each conduit having means for discharging a first gaseous reactant within each fuel cell, exhaust means for exhausting the combustion product chamber, manifolding means for supplying the first gaseous reactant to the conduits with the manifolding means disposed within the combustion product chamber between the porous barrier and the exhaust means and the manifolding means further comprising support and bypass means for providing support of the manifolding means within the housing while allowing combustion products from the first and a second gaseous reactant to flow past the manifolding means to the exhaust means, and means for flowing the second gaseous reactant into the generator chamber.

  9. Electrolyte paste for molten carbonate fuel cells

    DOEpatents

    Bregoli, Lawrance J.; Pearson, Mark L.

    1995-01-01

    The electrolyte matrix and electrolyte reservoir plates in a molten carbonate fuel cell power plant stack are filled with electrolyte by applying a paste of dry electrolyte powder entrained in a dissipatable carrier to the reactant flow channels in the current collector plate. The stack plates are preformed and solidified to final operating condition so that they are self sustaining and can be disposed one atop the other to form the power plant stack. Packing the reactant flow channels with the electrolyte paste allows the use of thinner electrode plates, particularly on the anode side of the cells. The use of the packed electrolyte paste provides sufficient electrolyte to fill the matrix and to entrain excess electrolyte in the electrode plates, which also serve as excess electrolyte reservoirs. When the stack is heated up to operating temperatures, the electrolyte in the paste melts, the carrier vaporizes, or chemically decomposes, and the melted electrolyte is absorbed into the matrix and electrode plates.

  10. Electrochemical cell apparatus having axially distributed entry of a fuel-spent fuel mixture transverse to the cell lengths

    DOEpatents

    Reichner, P.; Dollard, W.J.

    1991-01-08

    An electrochemical apparatus is made having a generator section containing axially elongated electrochemical cells, a fresh gaseous feed fuel inlet, a gaseous feed oxidant inlet, and at least one gaseous spent fuel exit channel, where the spent fuel exit channel passes from the generator chamber to combine with the fresh feed fuel inlet at a mixing apparatus, reformable fuel mixture channel passes through the length of the generator chamber and connects with the mixing apparatus, that channel containing entry ports within the generator chamber, where the axis of the ports is transverse to the fuel electrode surfaces, where a catalytic reforming material is distributed near the reformable fuel mixture entry ports. 2 figures.

  11. Organic fuel cells and fuel cell conducting sheets

    DOEpatents

    Masel, Richard I.; Ha, Su; Adams, Brian

    2007-10-16

    A passive direct organic fuel cell includes an organic fuel solution and is operative to produce at least 15 mW/cm.sup.2 when operating at room temperature. In additional aspects of the invention, fuel cells can include a gas remover configured to promote circulation of an organic fuel solution when gas passes through the solution, a modified carbon cloth, one or more sealants, and a replaceable fuel cartridge.

  12. Electrochemical fuel cell generator having an internal and leak tight hydrocarbon fuel reformer

    DOEpatents

    Dederer, J.T.; Hager, C.A.

    1998-03-31

    An electrochemical fuel cell generator configuration is made having a generator section which contains a plurality of axially elongated fuel cells, each cell containing a fuel electrode, air electrode, and solid oxide electrolyte between the electrodes, in which axially elongated dividers separate portions of the fuel cells from each other, and where at least one divider also reforms a reformable fuel gas mixture prior to electricity generation reactions, the at least one reformer-divider is hollow having a closed end and an open end entrance for a reformable fuel mixture to pass to the closed end of the divider and then reverse flow and pass back along the hollowed walls to be reformed, and then finally to pass as reformed fuel out of the open end of the divider to contact the fuel cells, and further where the reformer-divider is a composite structure having a gas diffusion barrier of metallic foil surrounding the external walls of the reformer-divider except at the entrance to prevent diffusion of the reformable gas mixture through the divider, and further housed in an outer insulating jacket except at the entrance to prevent short-circuiting of the fuel cells by the gas diffusion barrier. 10 figs.

  13. Electrochemical fuel cell generator having an internal and leak tight hydrocarbon fuel reformer

    DOEpatents

    Dederer, Jeffrey T.; Hager, Charles A.

    1998-01-01

    An electrochemical fuel cell generator configuration is made having a generator section which contains a plurality of axially elongated fuel cells, each cell containing a fuel electrode, air electrode, and solid oxide electrolyte between the electrodes, in which axially elongated dividers separate portions of the fuel cells from each other, and where at least one divider also reforms a reformable fuel gas mixture prior to electricity generation reactions, the at least one reformer-divider is hollow having a closed end and an open end entrance for a reformable fuel mixture to pass to the closed end of the divider and then reverse flow and pass back along the hollowed walls to be reformed, and then finally to pass as reformed fuel out of the open end of the divider to contact the fuel cells, and further where the reformer-divider is a composite structure having a gas diffusion barrier of metallic foil surrounding the external walls of the reformer-divider except at the entrance to prevent diffusion of the reformable gas mixture through the divider, and further housed in an outer insulating jacket except at the entrance to prevent short-circuiting of the fuel cells by the gas diffusion barrier.

  14. Creep resistant, metal-coated LiFeO[sub 2] anodes for molten carbonated fuel cells

    DOEpatents

    Khandkar, A.C.

    1994-08-23

    A porous, creep-resistant, metal-coated, LiFeO[sub 2] ceramic electrode for fuel cells is disclosed. The electrode is particularly useful for molten carbonate fuel cells (MCFC) although it may have utilities in solid oxide fuel cells (SOFC) as well. 11 figs.

  15. Creep resistant, metal-coated LiFeO.sub.2 anodes for molten carbonated fuel cells

    DOEpatents

    Khandkar, Ashok C. (Salt Lake City, UT)

    1994-01-01

    A porous, creep-resistant, metal-coated, LiFeO.sub.2 ceramic electrode for fuel cells is disclosed. The electrode is particularly useful for molten carbonate fuel cells (MCFC) although it may have utilities in solid oxide fuel cells (SOFC) as well.

  16. Negative Electrode For An Alkaline Cell

    DOEpatents

    Coco, Isabelle; Cocciantelli, Jean-Michel; Villenave, Jean-Jacques

    1998-07-14

    The present invention concerns a negative electrode for an alkaline cell, comprising a current collector supporting a paste containing an electrochemically active material and a binder, characterized in that said binder is a polymer containing hydrophilic and hydrophobic groups, said polymer being selected from an acrylic homopolymer, copolymer and terpolymer, an unsaturated organic acid copolymer and an unsaturated acid anhydride copolymer.

  17. Fuel Cell Projects Kickoff Meeting

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Nancy Garland Acting Fuel Cells Team Leader DOE Hydrogen Program nancy.garland@ee.doe.gov February 13-14, 2007 Washington, DC Overview 9 Key Personnel 9 Fuel Cell Program 9 Key ...

  18. Fuel Cells & Renewable Portfolio Standards

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    by 2025. o Non solar renewable energy - 12% o Solar energy - 0.5% o Advanced energy - 12.5% History of Ohio RPS Why fuel cells and RPS * Ohio's robust fuel cell industry in 2008 ...

  19. 2009 Fuel Cell Market Report

    Publication and Product Library

    Fuel cells are electrochemical devices that combine hydrogen and oxygen to produce electricity, water, and heat. Unlike batteries, fuel cells continuously generate electricity, as long as a source of

  20. Fuel Cell Technical Team Roadmap

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Hydrogen Storage Technologies Roadmap Fuel Cell Technical Team Roadmap June 2013 This ... The Fuel Cell Technical Team is one of 12 U.S. DRIVE technical teams ("tech teams") whose ...

  1. Fuel Cell Technologies Program Overview

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Fuel Cell Technologies Program Overview Program Overview Richard Farmer Richard Farmer ... 2 t t F l ll ff hi hl ffi i di f l d Fuel Cells Address Our Key Energy Challenges ...

  2. Fuel Cell Technical Team Roadmap

    SciTech Connect

    2013-06-01

    The Fuel Cell Technical Team promotes the development of a fuel cell power system for an automotive powertrain that meets the U.S. DRIVE Partnership (United States Driving Research and Innovation for Vehicle efficiency and Energy sustainability) goals.

  3. Layered method of electrode for solid oxide electrochemical cells

    DOEpatents

    Jensen, Russell R. (Murrysville, PA)

    1991-07-30

    A process for fabricating a fuel electrode comprising: slurry dipping to form layers which are structurally graded from all or mostly all stabilized zirconia at a first layer, to an outer most layer of substantially all metal powder, such an nickel. Higher performaance fuel electrodes may be achieved if sinter active stabilized zirconia doped for electronic conductivity is used.

  4. Regenerative fuel cell systems R and D

    SciTech Connect

    Mitlitsky, F.; Myers, B.; Weisberg, A.H.

    1998-08-01

    Regenerative fuel cell (RFC) systems produce power and electrolytically regenerate their reactants using stacks of electrochemical cells. Energy storage systems with extremely high specific energy (> 400 Wh/kg) have been designed that use lightweight pressure vessels to contain the gases generated by reversible (unitized) regenerative fuel cells (URFCs). Progress is reported on the development, integration, and operation of rechargeable energy storage systems with such high specific energy. Lightweight pressure vessels that enable high specific energies have been designed with performance factors (burst pressure/internal volume/tank weight) > 50 km (2.0 million inches), and a vessel with performance factor of 40 km (1.6 million inches) was fabricated. New generations of both advanced and industry-supplied hydrogen tankage are under development. A primary fuel cell test rig with a single cell (46 cm{sup 2} active area) has been modified and operated reversibly as a URFC (for up to 2010 cycles on a single cell). This URFC uses bifunctional electrodes (oxidation and reduction electrodes reverse roles when switching from charge to discharge, as with a rechargeable battery) and cathode feed electrolysis (water is fed from the hydrogen side of the cell). Recent modifications also enable anode feed electrolysis (water is fed from the oxygen side of the cell). Hydrogen/halogen URFCs, capable of higher round-trip efficiency than hydrogen/oxygen URFCs, have been considered, and will be significantly heavier. Progress is reported on higher performance hydrogen/oxygen URFC operation with reduced catalyst loading.

  5. Ternary compound electrode for lithium cells

    DOEpatents

    Raistrick, I.D.; Godshall, N.A.; Huggins, R.A.

    1980-07-30

    Lithium-based cells are promising for applications such as electric vehicles and load-leveling for power plants since lithium is very electropositive and of light weight. One type of lithium-based cell utilizes a molten salt electrolyte and normally is operated in the temperature range of about 350 to 500/sup 0/C. Such high temperature operation accelerates corrosion problems. The present invention provides an electrochemical cell in which lithium is the electroactive species. The cell has a positive electrode which includes a ternary compound generally represented as Li-M-O, wherein M is a transition metal. Corrosion of the inventive cell is considerably reduced.

  6. Ternary compound electrode for lithium cells

    DOEpatents

    Raistrick, Ian D.; Godshall, Ned A.; Huggins, Robert A.

    1982-01-01

    Lithium-based cells are promising for applications such as electric vehicles and load-leveling for power plants since lithium is very electropositive and of light weight. One type of lithium-based cell utilizes a molten salt electrolyte and normally is operated in the temperature range of about 350.degree.-500.degree. C. Such high temperature operation accelerates corrosion problems. The present invention provides an electrochemical cell in which lithium is the electroactive species. The cell has a positive electrode which includes a ternary compound generally represented as Li-M-O, wherein M is a transition metal. Corrosion of the inventive cell is considerably reduced.

  7. Manufacturing Fuel Cell Manhattan Project

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    to DOE Fuel Cell Manufacturing Workshop 2011 John Christensen, PE NREL Consultant DOE Fuel Cell Market Transformation Support August 11, 2011 Manufacturing Fuel Cell Manhattan Project √ Identify manufacturing cost drivers to achieve affordability √ Identify best practices in fuel cell manufacturing technology √ Identify manufacturing technology gaps √ Identify FC projects to address these gaps MFCMP Objectives Completed Final Report due out Nov 2010 B2PCOE Montana Tech SME's Industry

  8. Hydrogen & Fuel Cells Program Overview

    Office of Energy Efficiency and Renewable Energy (EERE)

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

  9. Fuel cell membrane humidification

    DOEpatents

    Wilson, Mahlon S.

    1999-01-01

    A polymer electrolyte membrane fuel cell assembly has an anode side and a cathode side separated by the membrane and generating electrical current by electrochemical reactions between a fuel gas and an oxidant. The anode side comprises a hydrophobic gas diffusion backing contacting one side of the membrane and having hydrophilic areas therein for providing liquid water directly to the one side of the membrane through the hydrophilic areas of the gas diffusion backing. In a preferred embodiment, the hydrophilic areas of the gas diffusion backing are formed by sewing a hydrophilic thread through the backing. Liquid water is distributed over the gas diffusion backing in distribution channels that are separate from the fuel distribution channels.

  10. Fuel cell report to congress

    SciTech Connect

    None, None

    2003-02-28

    This report describes the status of fuel cells for Congressional committees. It focuses on the technical and economic barriers to the use of fuel cells in transportation, portable power, stationary, and distributed power generation applications, and describes the need for public-private cooperative programs to demonstrate the use of fuel cells in commercial-scale applications by 2012. (Department of Energy, February 2003).

  11. Fuel cell sub-assembly

    DOEpatents

    Chi, Chang V.

    1983-01-01

    A fuel cell sub-assembly comprising a plurality of fuel cells, a first section of a cooling means disposed at an end of the assembly and means for connecting the fuel cells and first section together to form a unitary structure.

  12. Fuel Cell Handbook, Fifth Edition

    SciTech Connect

    Energy and Environmental Solutions

    2000-10-31

    Progress continues in fuel cell technology since the previous edition of the Fuel Cell Handbook was published in November 1998. Uppermost, polymer electrolyte fuel cells, molten carbonate fuel cells, and solid oxide fuel cells have been demonstrated at commercial size in power plants. The previously demonstrated phosphoric acid fuel cells have entered the marketplace with more than 220 power plants delivered. Highlighting this commercial entry, the phosphoric acid power plant fleet has demonstrated 95+% availability and several units have passed 40,000 hours of operation. One unit has operated over 49,000 hours. Early expectations of very low emissions and relatively high efficiencies have been met in power plants with each type of fuel cell. Fuel flexibility has been demonstrated using natural gas, propane, landfill gas, anaerobic digester gas, military logistic fuels, and coal gas, greatly expanding market opportunities. Transportation markets worldwide have shown remarkable interest in fuel cells; nearly every major vehicle manufacturer in the U.S., Europe, and the Far East is supporting development. This Handbook provides a foundation in fuel cells for persons wanting a better understanding of the technology, its benefits, and the systems issues that influence its application. Trends in technology are discussed, including next-generation concepts that promise ultrahigh efficiency and low cost, while providing exceptionally clean power plant systems. Section 1 summarizes fuel cell progress since the last edition and includes existing power plant nameplate data. Section 2 addresses the thermodynamics of fuel cells to provide an understanding of fuel cell operation at two levels (basic and advanced). Sections 3 through 8 describe the six major fuel cell types and their performance based on cell operating conditions. Alkaline and intermediate solid state fuel cells were added to this edition of the Handbook. New information indicates that manufacturers have stayed

  13. Alternative Fuels Data Center: Hydrogen Fuel Cell Vehicle Electric...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Printable Version Share this resource Send a link to Alternative Fuels Data Center: Hydrogen Fuel Cell Vehicle Electric Availability to someone by E-mail Share Alternative Fuels ...

  14. Fuel Cells Fact Sheet | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Fact Sheet Fuel Cells Fact Sheet Fact sheet produced by the Fuel Cell Technologies Office describing fuel cell technologies. Fuel Cells Fact Sheet (545.14 KB) More Documents & ...

  15. Fuel cell CO sensor

    DOEpatents

    Grot, Stephen Andreas; Meltser, Mark Alexander; Gutowski, Stanley; Neutzler, Jay Kevin; Borup, Rodney Lynn; Weisbrod, Kirk

    1999-12-14

    The CO concentration in the H.sub.2 feed stream to a PEM fuel cell stack is monitored by measuring current and/or voltage behavior patterns from a PEM-probe communicating with the reformate feed stream. Pattern recognition software may be used to compare the current and voltage patterns from the PEM-probe to current and voltage telltale outputs determined from a reference cell similar to the PEM-probe and operated under controlled conditions over a wide range of CO concentrations in the H.sub.2 fuel stream. A CO sensor includes the PEM-probe, an electrical discharge circuit for discharging the PEM-probe to monitor the CO concentration, and an electrical purging circuit to intermittently raise the anode potential of the PEM-probe's anode to at least about 0.8 V (RHE) to electrochemically oxidize any CO adsorbed on the probe's anode catalyst.

  16. Fuel Cell Financing Options

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    UTC Power Corporation 195 Governor's Highway South Windsor, CT Fuel Cell Financing Options (CESA/DOE Webinar - August 30, 2011) Paul J. Rescsanski, Manager, Business Finance Paul J. Rescsanski, Manager, Business Finance The UTC Power Advantage Strained Utility Grid, unreliable power * Significant Energy savings through: - 80 - 90% system efficiency - Combined heat and power * Payback in 3-5 years Sustainability and carbon reduction Rising energy costs * Assured power generated on-site: -

  17. Carbonate fuel cell matrix

    DOEpatents

    Farooque, Mohammad; Yuh, Chao-Yi

    1996-01-01

    A carbonate fuel cell matrix comprising support particles and crack attenuator particles which are made platelet in shape to increase the resistance of the matrix to through cracking. Also disclosed is a matrix having porous crack attenuator particles and a matrix whose crack attenuator particles have a thermal coefficient of expansion which is significantly different from that of the support particles, and a method of making platelet-shaped crack attenuator particles.

  18. Carbonate fuel cell matrix

    DOEpatents

    Farooque, M.; Yuh, C.Y.

    1996-12-03

    A carbonate fuel cell matrix is described comprising support particles and crack attenuator particles which are made platelet in shape to increase the resistance of the matrix to through cracking. Also disclosed is a matrix having porous crack attenuator particles and a matrix whose crack attenuator particles have a thermal coefficient of expansion which is significantly different from that of the support particles, and a method of making platelet-shaped crack attenuator particles. 8 figs.

  19. Electrocatalysts for Fuel Cells

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Electrocatalysts for Fuel Cells June 2012 BROOKHAVEN NATIONAL LABORATORY Technology Description * Core-shell nanoparticles with a palladium or palladium alloy core coated by a monolayer of platinum * All platinum atoms on surface and participate in catalysis * Lattice contraction improves catalytic activity of platinum * Reduction of platinum reduces overall precious metal cost 2 BROOKHAVEN NATIONAL LABORATORY Technology Opportunity * One version of the platinum monolayer core-shell

  20. Advanced Electrocatalysts for PEM Fuel Cells

    Energy.gov [DOE]

    Presentation slides from the DOE Fuel Cell Technologies Office webinar, Advanced Electrocatalysts for PEM Fuel Cells, held February 12, 2013.

  1. Stabilizing metal components in electrodes of electrochemical cells

    DOEpatents

    Spengler, Charles J.; Ruka, Roswell J.

    1989-01-01

    Disclosed is a method of reducing the removal or transfer into a gas phase of a current carrying metal in an apparatus, such as an electrochemical cell 2 having a porous fuel electrode 6 containing metal particles 11, where the metal is subject to removal or transfer into a gaseous phase, the method characterized in that (1) a metal organic compound that decomposes to form an electronically conducting oxide coating when heated is applied to the metal and porous electrode, and (2) the compound on the metal is then heated to a temperature sufficient to decompose the compound into an oxide coating 13 by increasing the temperature at a rate that is longer than 1 hour between room temperature and 600.degree. C., resulting in at least one continuous layer 13, 14 of the oxide coating on the metal.

  2. NREL: Hydrogen and Fuel Cells Research - Fuel Cell Manufacturing

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Cell Manufacturing Photo of scientific equipment in laboratory setting. NREL's in-line diagnostics help industry identify defects in fuel cell components. This small-scale manufacturing line at NREL's Energy Systems Integration Facility can convey fuel cell component materials at speeds of 100 feet per minute. NREL's fuel cell manufacturing R&D focuses on improving quality-inspection practices for high-volume manufacturing processes to enable higher production volumes, increased reliability,

  3. High Temperature Fuel Cell Performance High Temperature Fuel Cell

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Performance of of Sulfonated Sulfonated Poly(phenylene Poly(phenylene) Proton) Proton Conducting Conducting Polymers | Department of Energy Cell Performance High Temperature Fuel Cell Performance of of Sulfonated Sulfonated Poly(phenylene Poly(phenylene) Proton) Proton Conducting Conducting Polymers High Temperature Fuel Cell Performance High Temperature Fuel Cell Performance of of Sulfonated Sulfonated Poly(phenylene Poly(phenylene) Proton) Proton Conducting Conducting Polymers Presentation

  4. Fuel Cell Power Plant Experience Naval Applications

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    clean Fuel Cell Power Plant Experience Naval Applications US Department of Energy/ Office of Naval Research Shipboard Fuel Cell Workshop Washington, DC March 29, 2011 FuelCell Energy, the FuelCell Energy logo, Direct FuelCell and "DFC" are all registered trademarks (®) of FuelCell Energy, Inc. *FuelCell Energy, Inc. *Renewable and Liquid Fuels Experience *HTPEM Fuel Cell Stack for Shipboard APU *Solid Oxide Experience and Applications DOE-ONR Workshop FuelCell Energy, the FuelCell

  5. Fuel Cell Technical Publications | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Technical Publications » Fuel Cell Technical Publications Fuel Cell Technical Publications Technical information about fuel cells published in technical reports, conference proceedings, journal articles, and websites is provided here. General Transportation Stationary/Distributed Power Auxiliary and Portable Power Manufacturing Material Handling Equipment General 2015 Fuel Cell Technologies Market Report (Fuel Cell Technologies Office, October 2016) The Business Case for Fuel Cells 2015:

  6. Performance Assessment of Single Electrode-Supported Solid Oxide Cells Operating in the Steam Electrolysis Mode

    SciTech Connect

    X. Zhang; J. E. O'Brien; R. C. O'Brien; N. Petigny

    2011-11-01

    An experimental study is under way to assess the performance of electrode-supported solid-oxide cells operating in the steam electrolysis mode for hydrogen production. Results presented in this paper were obtained from single cells, with an active area of 16 cm{sup 2} per cell. The electrolysis cells are electrode-supported, with yttria-stabilized zirconia (YSZ) electrolytes ({approx}10 {mu}m thick), nickel-YSZ steam/hydrogen electrodes ({approx}1400 {mu}m thick), and modified LSM or LSCF air-side electrodes ({approx}90 {mu}m thick). The purpose of the present study is to document and compare the performance and degradation rates of these cells in the fuel cell mode and in the electrolysis mode under various operating conditions. Initial performance was documented through a series of voltage-current (VI) sweeps and AC impedance spectroscopy measurements. Degradation was determined through long-term testing, first in the fuel cell mode, then in the electrolysis mode. Results generally indicate accelerated degradation rates in the electrolysis mode compared to the fuel cell mode, possibly due to electrode delamination. The paper also includes details of an improved single-cell test apparatus developed specifically for these experiments.

  7. Fuel Cell Power Plants Renewable and Waste Fuels | Department...

    Energy.gov [DOE] (indexed site)

    Presentation by Frank Wolak, Fuel Cell Energy, at the Waste-to-Energy using Fuel Cells Workshop held Jan. 13, 2011 wastewolak.pdf (1.99 MB) More Documents & Publications Fuel Cell ...

  8. Electrorefining cell with parallel electrode/concentric cylinder cathode

    DOEpatents

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

    1997-07-22

    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.

  9. Electrorefining cell with parallel electrode/concentric cylinder cathode

    DOEpatents

    Gay, Eddie C.; Miller, William E.; Laidler, James J.

    1997-01-01

    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.

  10. Fuel cell stack with internal manifolds for reactant gases

    DOEpatents

    Schnacke, A.W.

    1983-10-12

    A fuel cell stack includes a plurality of plate-like fuel cells arranged along an axis generally parallel to cell thickness with electrically conductive separator plates between each pair of cells. A plurality of axial manifolds are provided at opposite sides of the stack in outer marginal portions beyond the edges of electrodes and electrolyte tiles. Sealing rings prevent cross-leakage of oxidant fuel gases through use of pairs of outwardly extending lips from opposite tile surfaces bonded to first and second electrode frames respectively. The frames provide transition between electrode edges and manifold perimeters. The pairs of extension lips are sealingly bonded together through an electrically insulative sealing ring with wedge shaped fastening members.

  11. Fuel cell stack with internal manifolds for reactant gases

    DOEpatents

    Schnacke, Arthur W. (Schenectady, NY)

    1985-01-01

    A fuel cell stack includes a plurality of plate-like fuel cells arranged along an axis generally parallel to cell thickness with electrically conductive separator plates between each pair of cells. A plurality of axial manifolds are provided at opposite sides of the stack in outer marginal portions beyond the edges of electrodes and electrolyte tiles. Sealing rings prevent cross-leakage of oxidant fuel gases through use of pairs of outwardly extending lips from opposite tile surfaces bonded to first and second electrode frames respectively. The frames provide transition between electrode edges and manifold perimeters. The pairs of extension lips are sealingly bonded together through an electrically insulative sealing ring with wedge shaped fastening members.

  12. Cornell Fuel Cell Institute: Materials Discovery to Enable Fuel Cell Technologies

    SciTech Connect

    Abruna, H.D.; DiSalvo, Francis J.

    2012-06-29

    The discovery and understanding of new, improved materials to advance fuel cell technology are the objectives of the Cornell Fuel Cell Institute (CFCI) research program. CFCI was initially formed in 2003. This report highlights the accomplishments from 2006-2009. Many of the grand challenges in energy science and technology are based on the need for materials with greatly improved or even revolutionary properties and performance. This is certainly true for fuel cells, which have the promise of being highly efficient in the conversion of chemical energy to electrical energy. Fuel cells offer the possibility of efficiencies perhaps up to 90 % based on the free energy of reaction. Here, the challenges are clearly in the materials used to construct the heart of the fuel cell: the membrane electrode assembly (MEA). The MEA consists of two electrodes separated by an ionically conducting membrane. Each electrode is a nanocomposite of electronically conducting catalyst support, ionic conductor and open porosity, that together form three percolation networks that must connect to each catalyst nanoparticle; otherwise the catalyst is inactive. This report highlights the findings of the three years completing the CFCI funding, and incudes developments in materials for electrocatalyts, catalyst supports, materials with structured and functional porosity for electrodes, and novel electrolyte membranes. The report also discusses developments at understanding electrocatalytic mechanisms, especially on novel catalyst surfaces, plus in situ characterization techniques and contributions from theory. Much of the research of the CFCI continues within the Energy Materials Center at Cornell (emc2), a DOE funded, Office of Science Energy Frontier Research Center (EFRC).

  13. Methanol-Tolerant Cathode Catalyst Composite For Direct Methanol Fuel Cells

    DOEpatents

    Zhu, Yimin; Zelenay, Piotr

    2006-03-21

    A direct methanol fuel cell (DMFC) having a methanol fuel supply, oxidant supply, and its membrane electrode assembly (MEA) formed of an anode electrode and a cathode electrode with a membrane therebetween, a methanol oxidation catalyst adjacent the anode electrode and the membrane, an oxidant reduction catalyst adjacent the cathode electrode and the membrane, comprises an oxidant reduction catalyst layer of a platinum-chromium alloy so that oxidation at the cathode of methanol that crosses from the anode through the membrane to the cathode is reduced with a concomitant increase of net electrical potential at the cathode electrode.

  14. Methanol-tolerant cathode catalyst composite for direct methanol fuel cells

    DOEpatents

    Zhu, Yimin; Zelenay, Piotr

    2006-09-05

    A direct methanol fuel cell (DMFC) having a methanol fuel supply, oxidant supply, and its membrane electrode assembly (MEA) formed of an anode electrode and a cathode electrode with a membrane therebetween, a methanol oxidation catalyst adjacent the anode electrode and the membrane, an oxidant reduction catalyst adjacent the cathode electrode and the membrane, comprises an oxidant reduction catalyst layer of Pt.sub.3Cr/C so that oxidation at the cathode of methanol that crosses from the anode through the membrane to the cathode is reduced with a concomitant increase of net electrical potential at the cathode electrode.

  15. Fuel cell system with interconnect

    DOEpatents

    Liu, Zhien; Goettler, Richard; Delaforce, Philip Mark

    2016-03-08

    The present invention includes a fuel cell system having an interconnect that reduces or eliminates diffusion (leakage) of fuel and oxidant by providing an increased densification, by forming the interconnect as a ceramic/metal composite.

  16. NREL: Hydrogen and Fuel Cells Research - Fuel Cell Electric Vehicle

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Evaluations Fuel Cell Electric Vehicle Evaluations NREL's technology validation team analyzes hydrogen fuel cell electric vehicles (FCEVs) operating in a real-world setting to identify the current status of the technology, compare it to Department of Energy (DOE) performance and durability targets, and evaluate progress between multiple generations of technology, some of which will include commercial FCEVs for the first time. Current fuel cell electric vehicle evaluations build on the

  17. NREL: Hydrogen and Fuel Cells Research - National Fuel Cell Technology

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Evaluation Center National Fuel Cell Technology Evaluation Center The National Fuel Cell Technology Evaluation Center (NFCTEC) at NREL's Energy Systems Integration Facility (ESIF) plays a crucial role in NREL's independent, third-party analysis of hydrogen fuel cell technologies in real-world operation. The NFCTEC is designed for secure management, storage, and processing of proprietary data from industry. Access to the off-network NFCTEC is limited to NREL's Technology Validation Team,

  18. NREL: Hydrogen and Fuel Cells Research - Stationary Fuel Cell Systems

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Analysis Stationary Fuel Cell Systems Analysis NREL's technology validation team analyzes the performance of stationary fuel cell systems operating in real-world conditions and reports on the technology's performance, progress, and challenges. This analysis includes multiple fuel cell types-proton exchange membrane, solid oxide, phosphoric acid, and molten carbonate-with system sizes ranging from 5 kW to 2.8 MW. Overview Composite Data Products Publications Learn More Contacts Photo of

  19. NREL: Hydrogen and Fuel Cells Research - Hydrogen Fuel Cell Electric...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Fuel Cell Electric Vehicle Learning Demonstration Delve deeper into real-world performance data with our Interactive Composite Data Product demo Graphical thumbnail of the ...

  20. Carbonate fuel cell anodes

    DOEpatents

    Donado, R.A.; Hrdina, K.E.; Remick, R.J.

    1993-04-27

    A molten alkali metal carbonates fuel cell porous anode of lithium ferrite and a metal or metal alloy of nickel, cobalt, nickel/iron, cobalt/iron, nickel/iron/aluminum, cobalt/iron/aluminum and mixtures thereof wherein the total iron content including ferrite and iron of the composite is about 25 to about 80 percent, based upon the total anode, provided aluminum when present is less than about 5 weight percent of the anode. A process is described for production of the lithium ferrite containing anode by slipcasting.

  1. Carbonate fuel cell anodes

    DOEpatents

    Donado, Rafael A. (Chicago, IL); Hrdina, Kenneth E. (Glenview, IL); Remick, Robert J. (Bolingbrook, IL)

    1993-01-01

    A molten alkali metal carbonates fuel cell porous anode of lithium ferrite and a metal or metal alloy of nickel, cobalt, nickel/iron, cobalt/iron, nickel/iron/aluminum, cobalt/iron/aluminum and mixtures thereof wherein the total iron content including ferrite and iron of the composite is about 25 to about 80 percent, based upon the total anode, provided aluminum when present is less than about 5 weight percent of the anode. A process for production of the lithium ferrite containing anode by slipcasting.

  2. Hydrogen Fuel Cells for Small Unmanned Air Vehicles Webinar | Department of

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Energy Cells for Small Unmanned Air Vehicles Webinar Hydrogen Fuel Cells for Small Unmanned Air Vehicles Webinar Access the recording and download the presentation slides from the Fuel Cell Technologies Office webinar "Hydrogen Fuel Cells for Small Unmanned Air Vehicles" held on May 26, 2016. Hydrogen Fuel Cells for Small Unmanned Air Vehicles Webinar Slides (5.47 MB) More Documents & Publications Testing Oxygen Reduction Reaction Activity with the Rotating Disc Electrode

  3. Electrical contact structures for solid oxide electrolyte fuel cell

    DOEpatents

    Isenberg, Arnold O.

    1984-01-01

    An improved electrical output connection means is provided for a high temperature solid oxide electrolyte type fuel cell generator. The electrical connection of the fuel cell electrodes to the electrical output bus, which is brought through the generator housing to be connected to an electrical load line maintains a highly uniform temperature distribution. The electrical connection means includes an electrode bus which is spaced parallel to the output bus with a plurality of symmetrically spaced transversely extending conductors extending between the electrode bus and the output bus, with thermal insulation means provided about the transverse conductors between the spaced apart buses. Single or plural stages of the insulated transversely extending conductors can be provided within the high temperatures regions of the fuel cell generator to provide highly homogeneous temperature distribution over the contacting surfaces.

  4. Graphene nanocomposites for electrochemical cell electrodes

    DOEpatents

    Zhamu, Aruna; Jang, Bor Z.; Shi, Jinjun

    2015-11-19

    A composite composition for electrochemical cell electrode applications, the composition comprising multiple solid particles, wherein (a) a solid particle is composed of graphene platelets dispersed in or bonded by a first matrix or binder material, wherein the graphene platelets are not obtained from graphitization of the first binder or matrix material; (b) the graphene platelets have a length or width in the range of 10 nm to 10 .mu.m; (c) the multiple solid particles are bonded by a second binder material; and (d) the first or second binder material is selected from a polymer, polymeric carbon, amorphous carbon, metal, glass, ceramic, oxide, organic material, or a combination thereof. For a lithium ion battery anode application, the first binder or matrix material is preferably amorphous carbon or polymeric carbon. Such a composite composition provides a high anode capacity and good cycling response. For a supercapacitor electrode application, the solid particles preferably have meso-scale pores therein to accommodate electrolyte.

  5. Fuel Cell Power Plants Renewable and Waste Fuels

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Cell Power Plants Fuel Cell Power Plants Renewable and Waste Fuels DOE-DOD Workshop Washington, DC. January 13, 2011 reliable, efficient, ultra-clean FuelCell Energy, Inc. * Premier developer of stationary fuel Premier developer of stationary fuel cell technology - founded in 1969 * Over 50 installations in North America, Europe, and Asia * Industrial, commercial, utility products products * 300 KW to 50 MW and beyond FuelCell Energy, the FuelCell Energy logo, Direct FuelCell and "DFC"

  6. Hybrid Fuel Cell Technology Overview

    SciTech Connect

    None available

    2001-05-31

    For the purpose of this STI product and unless otherwise stated, hybrid fuel cell systems are power generation systems in which a high temperature fuel cell is combined with another power generating technology. The resulting system exhibits a synergism in which the combination performs with an efficiency far greater than can be provided by either system alone. Hybrid fuel cell designs under development include fuel cell with gas turbine, fuel cell with reciprocating (piston) engine, and designs that combine different fuel cell technologies. Hybrid systems have been extensively analyzed and studied over the past five years by the Department of Energy (DOE), industry, and others. These efforts have revealed that this combination is capable of providing remarkably high efficiencies. This attribute, combined with an inherent low level of pollutant emission, suggests that hybrid systems are likely to serve as the next generation of advanced power generation systems.

  7. Fuel Cell Technologies Office Overview

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Biological Hydrogen Production Workshop Sara Dillich U.S Department of Energy Office of Energy Efficiency & Renewable Energy Fuel Cell Technologies Office National Renewable Energy Laboratory Golden, Colorado September 24, 2013 2 Hydrogen and Fuel Cells Program Overview Nearly 300 projects currently funded at companies, national labs, and universities/institutes Mission: Enable widespread commercialization of a portfolio of hydrogen and fuel cell technologies through applied research,

  8. Fuel cell design and assembly

    DOEpatents

    Myerhoff, Alfred

    1984-01-01

    The present invention is directed to a novel bipolar cooling plate, fuel cell design and method of assembly of fuel cells. The bipolar cooling plate used in the fuel cell design and method of assembly has discrete opposite edge and means carried by the plate defining a plurality of channels extending along the surface of the plate toward the opposite edges. At least one edge of the channels terminates short of the edge of the plate defining a recess for receiving a fastener.

  9. Fuel cell gas management system

    DOEpatents

    DuBose, Ronald Arthur

    2000-01-11

    A fuel cell gas management system including a cathode humidification system for transferring latent and sensible heat from an exhaust stream to the cathode inlet stream of the fuel cell; an anode humidity retention system for maintaining the total enthalpy of the anode stream exiting the fuel cell equal to the total enthalpy of the anode inlet stream; and a cooling water management system having segregated deionized water and cooling water loops interconnected by means of a brazed plate heat exchanger.

  10. Fuel Cells Related Links | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Fuel Cells » Fuel Cells Related Links Fuel Cells Related Links The following resources provide details about U.S. Department of Energy (DOE)-funded fuel cell activities, research plans and roadmaps, partnerships, and additional related links. DOE-Funded Fuel Cell Activities Each year, hydrogen and fuel cell projects funded by DOE's Hydrogen and Fuel Cells Program are reviewed for their merit during an Annual Merit Review and Peer Evaluation Meeting. View posters and presentations from the

  11. Ceramic Fuel Cells (SOFC) | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Ceramic Fuel Cells (SOFC) Ceramic Fuel Cells (SOFC) Presented at the NREL Hydrogen and Fuel Cell Manufacturing R&D Workshop in Washington, DC, August 11-12, 2011. Ceramic Fuel Cells (SOFC) (1.09 MB) More Documents & Publications 2011 NREL/DOE Hydrogen and Fuel Cell Manufacturing R&D Workshop Report Manufacturing Fuel Cell Manhattan Project DOE Fuel Cell Pre-Solicitation Workshop - Breakout Group 3: HIGH TEMP (SOFC) SYSTEM AND BOP

  12. Fuel Cells & Renewable Portfolio Standards

    Office of Energy Efficiency and Renewable Energy (EERE)

    Presented at the Clean Energy States Alliance and U.S. Department of Energy Webinar: Fuel Cells and Renewable Portfolio Standards, June 9, 2011.

  13. Molten carbonate fuel cell separator

    DOEpatents

    Nickols, Richard C.

    1986-09-02

    In a stacked array of molten carbonate fuel cells, a fuel cell separator is positioned between adjacent fuel cells to provide isolation as well as a conductive path therebetween. The center portion of the fuel cell separator includes a generally rectangular, flat, electrical conductor. Around the periphery of the flat portion of the separator are positioned a plurality of elongated resilient flanges which form a gas-tight seal around the edges of the fuel cell. With one elongated flange resiliently engaging a respective edge of the center portion of the separator, the sealing flanges, which are preferably comprised of a noncorrosive material such as an alloy of yttrium, iron, aluminum or chromium, form a tight-fitting wet seal for confining the corrosive elements of the fuel cell therein. This arrangement permits a good conductive material which may be highly subject to corrosion and dissolution to be used in combination with a corrosion-resistant material in the fuel cell separator of a molten carbonate fuel cell for improved fuel cell conductivity and a gas-tight wet seal.

  14. Molten carbonate fuel cell separator

    DOEpatents

    Nickols, R.C.

    1984-10-17

    In a stacked array of molten carbonate fuel cells, a fuel cell separator is positioned between adjacent fuel cells to provide isolation as well as a conductive path therebetween. The center portion of the fuel cell separator includes a generally rectangular, flat, electrical conductor. Around the periphery of the flat portion of the separator are positioned a plurality of elongated resilient flanges which form a gas-tight seal around the edges of the fuel cell. With one elongated flange resiliently engaging a respective edge of the center portion of the separator, the sealing flanges, which are preferably comprised of a noncorrosive material such as an alloy of yttrium, iron, aluminum or chromium, form a tight-fitting wet seal for confining the corrosive elements of the fuel cell therein. This arrangement permits a good conductive material which may be highly subject to corrosion and dissolution to be used in combination with a corrosion-resistant material in the fuel cell separator of a molten carbonate fuel cell for improved fuel cell conductivity and a gas-tight wet seal.

  15. LADWP FUEL CELL DEMONSTRATION PROJECT

    SciTech Connect

    Thai Ta

    2003-09-12

    Los Angeles Department of Water and Power (LADWP) is currently one of the most active power utility companies in researching fuel cell technology. Fuel cells offer many benefits and are now used as an alternative to traditional internal combustion engines in power generation. In continuing it's role as the leader in fuel cell research, LADWP has installed a pre-commercial molten carbonate fuel cell on August 2001 at its headquarter, the John Ferraro Building (JFB). The goal of this project is to learn more about the actual behavior of the fuel cell running under real world conditions. The fuel cell ran smoothly through the first year of operation with very high efficiency, but with some minor setbacks. The JFB fuel cell project is funded by the City of Los Angeles Department of Water and Power with partial grant funding from the Department of Defense's Climate Change Fuel Cell Buydown Program. The technical evaluation and the benefit-cost evaluation of the JFB fuel cell are both examined in this report.

  16. CLIMATE CHANGE FUEL CELL PROGRAM

    SciTech Connect

    Steven A. Gabrielle

    2004-12-03

    This report discusses the first year of operation of a fuel cell power plant located at the Sheraton Edison Hotel, Edison, New Jersey. PPL EnergyPlus, LLC installed the plant under a contract with the Starwood Hotels & Resorts Worldwide, Inc. A DFC{reg_sign}300 fuel cell, manufactured by FuelCell Energy, Inc. of Danbury, CT was selected for the project. The fuel cell successfully operated from June 2003 to May 2004. This report discusses the performance of the plant during this period.

  17. Maritime Hydrogen Fuel Cell Project

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Fuel Cell Project - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us ... Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power ...

  18. economic hydrogen fuel cell vehicles

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    economic hydrogen fuel cell vehicles - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future ...

  19. Fuel Cell Vehicle Basics | NREL

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    electricity for propulsion as well as for a car's electric and electronic equipment. ... and containing the words "hydrogen fuel cell electric" across the front and rear doors. ...

  20. Hydrogen and Fuel Cell Technologies Update: 2010 Fuel Cell Seminar and

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Exposition | Department of Energy Update: 2010 Fuel Cell Seminar and Exposition Hydrogen and Fuel Cell Technologies Update: 2010 Fuel Cell Seminar and Exposition Presentation by Sunita Satyapal at the 2010 Fuel Cell Seminar and Exposition on October 19, 2010. Hydrogen and Fuel Cell Technologies Update (4.81 MB) More Documents & Publications DOE Hydrogen and Fuel Cell Overview: 2011 Waste-to-Energy Using Fuel Cells Workshop 2010 Fuel Cell Project Kick-off Welcome DOE Hydrogen and Fuel

  1. Fuel Quality Issues in Stationary Fuel Cell Systems

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Quality Issues in Stationary Fuel Cell Systems ANLCSEFCTFQ-2011-11 Chemical Sciences ... Fuel Quality Issues in Stationary Fuel Cell Systems prepared by D.D. Papadias, S. Ahmed, ...

  2. Performance modelling of a proton exchange membrane fuel cell

    SciTech Connect

    Marr, C.; Li, X.

    1998-12-31

    This paper presents a performance model of a proton exchange membrane fuel cell that has sufficient accuracy for engineering applications with reduced computational requirements. The model includes electrochemical reaction in the catalyst layers and formulation for electrical resistance in the membrane, electrodes and bipolar plates, and employs engineering correlation for the reactant gas transport in the flow channels and through the electrodes. It is shown that the present model predictions are in reasonable agreement with known experimental observations, indicating that the present model can be employed for fuel cell stack and system modeling. The effect of various operating and design parameters on the cell performance has been investigated. It is found that mass transport limitations are the largest cause of performance loss in the cell when graphite is used as the material for bipolar plates and electrodes. If conducting polymers are substituted as construction materials, cell performance is expected to suffer considerably at high current densities due to their reduced electrical conductivity.

  3. Control of electrolyte fill to fuel cell stack

    DOEpatents

    Pollack, William

    1982-01-01

    A fuel cell stack which can be operated with cells in a horizontal position so that the fuel cell stack does not have to be taken out of operation when adding an electrolyte such as an acid. Acid is supplied to each matrix in a stack of fuel cells at a uniform, low pressure so that the matrix can either be filled initially or replenished with acid lost in operation of the cell, without exceeding the bubble pressure of the matrix or the flooding pressure of the electrodes on either side of the matrix. Acid control to each cell is achieved by restricting and offsetting the opening of electrolyte fill holes in the matrix relative to openings in the plates which sandwich the matrix and electrodes therebetween.

  4. Fuel cell with metal screen flow-field

    DOEpatents

    Wilson, Mahlon S.; Zawodzinski, Christine

    2001-01-01

    A polymer electrolyte membrane (PEM) fuel cell is provided with electrodes supplied with a reactant on each side of a catalyzed membrane assembly (CMA). The fuel cell includes a metal mesh defining a rectangular flow-field pattern having an inlet at a first corner and an outlet at a second corner located on a diagonal from the first corner, wherein all flow paths from the inlet to the outlet through the square flow field pattern are equivalent to uniformly distribute the reactant over the CMA. In a preferred form of metal mesh, a square weave screen forms the flow-field pattern. In a particular characterization of the present invention, a bipolar plate electrically connects adjacent fuel cells, where the bipolar plate includes a thin metal foil having an anode side and a cathode side; a first metal mesh on the anode side of the thin metal foil; and a second metal mesh on the cathode side of the thin metal foil. In another characterization of the present invention, a cooling plate assembly cools adjacent fuel cells, where the cooling plate assembly includes an anode electrode and a cathode electrode formed of thin conducting foils; and a metal mesh flow field therebetween for distributing cooling water flow over the electrodes to remove heat generated by the fuel cells.

  5. Fuel cell with metal screen flow-field

    DOEpatents

    Wilson, Mahlon S.; Zawodzinski, Christine

    1998-01-01

    A polymer electrolyte membrane (PEM) fuel cell is provided with electrodes supplied with a reactant on each side of a catalyzed membrane assembly (CMA). The fuel cell includes a metal mesh defining a rectangular flow-field pattern having an inlet at a first corner and an outlet at a second corner located on a diagonal from the first corner, wherein all flow paths from the inlet to the outlet through the square flow field pattern are equivalent to uniformly distribute the reactant over the CMA. In a preferred form of metal mesh, a square weave screen forms the flow-field pattern. In a particular characterization of the present invention, a bipolar plate electrically connects adjacent fuel cells, where the bipolar plate includes a thin metal foil having an anode side and a cathode side; a first metal mesh on the anode side of the thin metal foil; and a second metal mesh on the cathode side of the thin metal foil. In another characterization of the present invention, a cooling plate assembly cools adjacent fuel cells, where the cooling plate assembly includes an anode electrode and a cathode electrode formed of thin conducting foils; and a metal mesh flow field therebetween for distributing cooling water flow over the electrodes to remove heat generated by the fuel cells.

  6. Fuel cell with metal screen flow-field

    DOEpatents

    Wilson, M.S.; Zawodzinski, C.

    1998-08-25

    A polymer electrolyte membrane (PEM) fuel cell is provided with electrodes supplied with a reactant on each side of a catalyzed membrane assembly (CMA). The fuel cell includes a metal mesh defining a rectangular flow-field pattern having an inlet at a first corner and an outlet at a second corner located on a diagonal from the first corner, wherein all flow paths from the inlet to the outlet through the square flow field pattern are equivalent to uniformly distribute the reactant over the CMA. In a preferred form of metal mesh, a square weave screen forms the flow-field pattern. In a particular characterization of the present invention, a bipolar plate electrically connects adjacent fuel cells, where the bipolar plate includes a thin metal foil having an anode side and a cathode side; a first metal mesh on the anode side of the thin metal foil; and a second metal mesh on the cathode side of the thin metal foil. In another characterization of the present invention, a cooling plate assembly cools adjacent fuel cells, where the cooling plate assembly includes an anode electrode and a cathode electrode formed of thin conducting foils; and a metal mesh flow field there between for distributing cooling water flow over the electrodes to remove heat generated by the fuel cells. 11 figs.

  7. Fuel Cell Powered Lift Truck

    SciTech Connect

    Moulden, Steve

    2015-08-20

    This project, entitled “Recovery Act: Fuel Cell-Powered Lift Truck Sysco (Houston) Fleet Deployment”, was in response to DOE funding opportunity announcement DE-PS36-08GO98009, Topic 7B, which promotes the deployment of fuel cell powered material handling equipment in large, multi-shift distribution centers. This project promoted large-volume commercialdeployments and helped to create a market pull for material handling equipment (MHE) powered fuel cell systems. Specific outcomes and benefits involved the proliferation of fuel cell systems in 5-to 20-kW lift trucks at a high-profile, real-world site that demonstrated the benefits of fuel cell technology and served as a focal point for other nascent customers. The project allowed for the creation of expertise in providing service and support for MHE fuel cell powered systems, growth of existing product manufacturing expertise, and promoted existing fuel cell system and component companies. The project also stimulated other MHE fleet conversions helping to speed the adoption of fuel cell systems and hydrogen fueling technology. This document also contains the lessons learned during the project in order to communicate the successes and difficulties experienced, which could potentially assist others planning similar projects.

  8. 1986 fuel cell seminar: Program and abstracts

    SciTech Connect

    1986-10-01

    Ninety nine brief papers are arranged under the following session headings: gas industry's 40 kw program, solid oxide fuel cell technology, phosphoric acid fuel cell technology, molten carbonate fuel cell technology, phosphoric acid fuel cell systems, power plants technology, fuel cell power plant designs, unconventional fuels, fuel cell application and economic assessments, and plans for commerical development. The papers are processed separately for the data base. (DLC)

  9. Types of Fuel Cells | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Fuel Cells » Types of Fuel Cells Types of Fuel Cells Fuel cells are classified primarily by the kind of electrolyte they employ. This classification determines the kind of electro-chemical reactions that take place in the cell, the kind of catalysts required, the temperature range in which the cell operates, the fuel required, and other factors. These characteristics, in turn, affect the applications for which these cells are most suitable. There are several types of fuel cells currently under

  10. First Principles Calculations and NMR Spectroscopy of Electrode...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    and NMR Spectroscopy of Electrode Materials First Principles Calculations and NMR Spectroscopy of Electrode Materials 2011 DOE Hydrogen and Fuel Cells Program, and Vehicle ...

  11. Method for producing electricity from a fuel cell having solid-oxide ionic electrolyte

    DOEpatents

    Mason, David M.

    1984-01-01

    Stabilized quadrivalent cation oxide electrolytes are employed in fuel cells at elevated temperatures with a carbon and/or hydrogen containing fuel anode and an oxygen cathode. The fuel cell is operated at elevated temperatures with conductive metallic coatings as electrodes and desirably having the electrolyte surface blackened. Of particular interest as the quadrivalent oxide is zirconia.

  12. Fuel cell electric power production

    DOEpatents

    Hwang, Herng-Shinn; Heck, Ronald M.; Yarrington, Robert M.

    1985-01-01

    A process for generating electricity from a fuel cell includes generating a hydrogen-rich gas as the fuel for the fuel cell by treating a hydrocarbon feed, which may be a normally liquid feed, in an autothermal reformer utilizing a first monolithic catalyst zone having palladium and platinum catalytic components therein and a second, platinum group metal steam reforming catalyst. Air is used as the oxidant in the hydrocarbon reforming zone and a low oxygen to carbon ratio is maintained to control the amount of dilution of the hydrogen-rich gas with nitrogen of the air without sustaining an insupportable amount of carbon deposition on the catalyst. Anode vent gas may be utilized as the fuel to preheat the inlet stream to the reformer. The fuel cell and the reformer are preferably operated at elevated pressures, up to about a pressure of 150 psia for the fuel cell.

  13. Solid oxide fuel cell generator

    DOEpatents

    Draper, Robert; George, Raymond A.; Shockling, Larry A.

    1993-01-01

    A solid oxide fuel cell generator has a pair of spaced apart tubesheets in a housing. At least two intermediate barrier walls are between the tubesheets and define a generator chamber between two intermediate buffer chambers. An array of fuel cells have tubes with open ends engaging the tubesheets. Tubular, axially elongated electrochemical cells are supported on the tubes in the generator chamber. Fuel gas and oxidant gas are preheated in the intermediate chambers by the gases flowing on the other side of the tubes. Gas leakage around the tubes through the tubesheets is permitted. The buffer chambers reentrain the leaked fuel gas for reintroduction to the generator chamber.

  14. Solid oxide fuel cell generator

    DOEpatents

    Draper, R.; George, R.A.; Shockling, L.A.

    1993-04-06

    A solid oxide fuel cell generator has a pair of spaced apart tubesheets in a housing. At least two intermediate barrier walls are between the tubesheets and define a generator chamber between two intermediate buffer chambers. An array of fuel cells have tubes with open ends engaging the tubesheets. Tubular, axially elongated electrochemical cells are supported on the tubes in the generator chamber. Fuel gas and oxidant gas are preheated in the intermediate chambers by the gases flowing on the other side of the tubes. Gas leakage around the tubes through the tubesheets is permitted. The buffer chambers reentrain the leaked fuel gas for reintroduction to the generator chamber.

  15. Fuel Cell Animation | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Animation Fuel Cell Animation This fuel cell animation demonstrates how a fuel cell uses hydrogen to produce electricity, with only water and heat as byproducts. Hydrogen fuel cell vehicles emit approximately the same amount of water per mile as conventional vehicles powered by internal combustion engines. Learn more about water emissions from fuel cell vehicles. View text version of animation.

  16. Negative Electrodes Improve Safety in Lithium Cells and Batteries | Argonne

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    National Laboratory Negative Electrodes Improve Safety in Lithium Cells and Batteries Technology available for licensing: Enhanced stability at a lower cost Lowers cost for enhanced stability capability. A new class of intermetallic material for the negative electrode that offers a significantly higher volumetric and gravimetric capacity and improves battery stability and safety. PDF icon negative_electrodes

  17. Oxide modified air electrode surface for high temperature electrochemical cells

    DOEpatents

    Singh, Prabhakar; Ruka, Roswell J.

    1992-01-01

    An electrochemical cell is made having a porous cermet electrode (16) and a porous lanthanum manganite electrode (14), with solid oxide electrolyte (15) between them, where the lanthanum manganite surface next to the electrolyte contains a thin discontinuous layer of high surface area cerium oxide and/or praseodymium oxide, preferably as discrete particles (30) in contact with the air electrode and electrolyte.

  18. Screening of Electrode Materials & Cell Chemistries and Streamlining Optimization of Electrodes

    Energy.gov [DOE]

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

  19. Nanofiber membrane-electrode-assembly and method of fabricating same

    DOEpatents

    Pintauro, Peter N.; Ballengee, Jason; Brodt, Matthew

    2016-02-02

    In one aspect of the present invention, a fuel cell membrane-electrode-assembly (MEA) has an anode electrode, a cathode electrode, and a membrane disposed between the anode electrode and the cathode electrode. At least one of the anode electrode, the cathode electrode and the membrane is formed of electrospun nanofibers.

  20. Microbial fuel cells

    DOEpatents

    Nealson, Kenneth H; Pirbazari, Massoud; Hsu, Lewis

    2013-04-09

    A microbial fuel cell includes an anode compartment with an anode and an anode biocatalyst and a cathode compartment with a cathode and a cathode biocatalyst, with a membrane positioned between the anode compartment and the cathode compartment, and an electrical pathway between the anode and the cathode. The anode biocatalyst is capable of catalyzing oxidation of an organic substance, and the cathode biocatalyst is capable of catalyzing reduction of an inorganic substance. The reduced organic substance can form a precipitate, thereby removing the inorganic substance from solution. In some cases, the anode biocatalyst is capable of catalyzing oxidation of an inorganic substance, and the cathode biocatalyst is capable of catalyzing reduction of an organic or inorganic substance.

  1. Comparison of Fuel Cell Technologies

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Fuel Cell Technologies Fuel Cell Type Common Electrolyte Operating Temperature Typical Stack Size Electrical Efficiency (LHV) Applications Advantages Challenges Polymer Electrolyte Membrane (PEM) Perfluorosulfonic acid <120°C <1 kW - 100 kW 60% direct H 2 ; i 40% reformed fuel ii * Backup power * Portable power * Distributed generation * Transportation * Specialty vehicles * Solid electrolyte reduces corrosion & electrolyte management problems * Low temperature * Quick start-up and

  2. NETL: Solid Oxide Fuel Cells

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Solid Oxide Fuel Cells Solid oxide fuel cells (SOFC) are electrochemical devices that convert chemical energy of a fuel and oxidant directly into electrical energy. Since SOFCs produce electricity through an electrochemical reaction and not through a combustion process, they are much more efficient and environmentally benign than conventional electric power generation processes. Their inherent characteristics make them uniquely suitable to address the environmental, climate change, and water

  3. Microbial fuel cell treatment of fuel process wastewater (Patent) |

    Office of Scientific and Technical Information (OSTI)

    DOEPatents Microbial fuel cell treatment of fuel process wastewater Title: Microbial fuel cell treatment of fuel process wastewater The present invention is directed to a method for cleansing fuel processing effluent containing carbonaceous compounds and inorganic salts, the method comprising contacting the fuel processing effluent with an anode of a microbial fuel ell, the anode containing microbes thereon which oxidatively degrade one or more of the carbonaceous compounds while producing

  4. Proton exchange membrane fuel cell technology for transportation applications

    SciTech Connect

    Swathirajan, S.

    1996-04-01

    Proton Exchange Membrane (PEM) fuel cells are extremely promising as future power plants in the transportation sector to achieve an increase in energy efficiency and eliminate environmental pollution due to vehicles. GM is currently involved in a multiphase program with the US Department of Energy for developing a proof-of-concept hybrid vehicle based on a PEM fuel cell power plant and a methanol fuel processor. Other participants in the program are Los Alamos National Labs, Dow Chemical Co., Ballard Power Systems and DuPont Co., In the just completed phase 1 of the program, a 10 kW PEM fuel cell power plant was built and tested to demonstrate the feasibility of integrating a methanol fuel processor with a PEM fuel cell stack. However, the fuel cell power plant must overcome stiff technical and economic challenges before it can be commercialized for light duty vehicle applications. Progress achieved in phase I on the use of monolithic catalyst reactors in the fuel processor, managing CO impurity in the fuel cell stack, low-cost electrode-membrane assembles, and on the integration of the fuel processor with a Ballard PEM fuel cell stack will be presented.

  5. Method of bonding an interconnection layer on an electrode of an electrochemical cell

    DOEpatents

    Pal, Uday B.; Isenberg, Arnold O.; Folser, George R.

    1992-01-01

    An electrochemical cell containing an air electrode (16), contacting electrolyte and electronically conductive interconnection layer (26), and a fuel electrode, has the interconnection layer (26) attached by: (A) applying a thin, closely packed, discrete layer of LaCrO.sub.3 particles (30), doped with an element selected from the group consisting of Ca, Sr, Co, Ba, Mg and their mixtures on a portion of the air electrode, and then (B) electrochemical vapor depositing a dense skeletal structure (32) between and around the doped LaCrO.sub.3 particles (30).

  6. Method of bonding an interconnection layer on an electrode of an electrochemical cell

    DOEpatents

    Pal, U.B.; Isenberg, A.O.; Folser, G.R.

    1992-01-14

    An electrochemical cell containing an air electrode, contacting electrolyte and electronically conductive interconnection layer, and a fuel electrode, has the interconnection layer attached by: (A) applying a thin, closely packed, discrete layer of LaCrO[sub 3] particles, doped with an element selected from the group consisting of Ca, Sr, Co, Ba, Mg and their mixtures on a portion of the air electrode, and then (B) electrochemical vapor depositing a dense skeletal structure between and around the doped LaCrO[sub 3] particles. 2 figs.

  7. Heated transportable fuel cell cartridges

    DOEpatents

    Lance, Joseph R. (N. Huntingdon, PA); Spurrier, Francis R. (Whitehall, PA)

    1985-01-01

    A fuel cell stack protective system is made where a plurality of fuel cells, each containing liquid electrolyte subject to crystallization, is enclosed by a containing vessel, and where at least one electric heater is placed in the containing vessel and is capable of preventing electrolyte crystallization.

  8. Energy 101: Fuel Cell Technology

    SciTech Connect

    2014-03-11

    Learn how fuel cell technology generates clean electricity from hydrogen to power our buildings and transportation-while emitting nothing but water. This video illustrates the fundamentals of fuel cell technology and its potential to supply our homes, offices, industries, and vehicles with sustainable, reliable energy.

  9. Bonded polyimide fuel cell package

    DOEpatents

    Morse, Jeffrey D.; Jankowski, Alan; Graff, Robert T.; Bettencourt, Kerry

    2010-06-08

    Described herein are processes for fabricating microfluidic fuel cell systems with embedded components in which micron-scale features are formed by bonding layers of DuPont Kapton.TM. polyimide laminate. A microfluidic fuel cell system fabricated using this process is also described.

  10. Energy 101: Fuel Cell Technology

    ScienceCinema

    None

    2016-07-12

    Learn how fuel cell technology generates clean electricity from hydrogen to power our buildings and transportation-while emitting nothing but water. This video illustrates the fundamentals of fuel cell technology and its potential to supply our homes, offices, industries, and vehicles with sustainable, reliable energy.

  11. Bronx Zoo Fuel Cell Project

    SciTech Connect

    Hoang Pham

    2007-09-30

    A 200 kW Fuel Cell has been installed in the Lion House, Bronx Zoo, NY. The Fuel Cell is a 200 kW phosphoric acid type manufactured by United Technologies Corporation (UTC) and will provide thermal energy at 725,000 Btu/hr.

  12. Integrated fuel cell stack shunt current prevention arrangement

    DOEpatents

    Roche, Robert P.; Nowak, Michael P.

    1992-01-01

    A fuel cell stack includes a plurality of fuel cells juxtaposed with one another in the stack and each including a pair of plate-shaped anode and cathode electrodes that face one another, and a quantity of liquid electrolyte present at least between the electrodes. A separator plate is interposed between each two successive electrodes of adjacent ones of the fuel cells and is unified therewith into an integral separator plate. Each integral separator plate is provided with a circumferentially complete barrier that prevents flow of shunt currents onto and on an outer peripheral surface of the separator plate. This barrier consists of electrolyte-nonwettable barrier members that are accommodated, prior to the formation of the integral separator plate, in corresponding edge recesses situated at the interfaces between the electrodes and the separator plate proper. Each barrier member extends over the entire length of the associated marginal portion and is flush with the outer periphery of the integral separator plate. This barrier also prevents cell-to-cell migration of any electrolyte that may be present at the outer periphery of the integral separator plate while the latter is incorporated in the fuel cell stack.

  13. Enhanced surface exchange activity and electrode performance of (La2−2xSr2x)(Ni1−xMnx)O4+δ cathode for intermediate temperature solid oxide fuel cells

    DOE PAGES [OSTI]

    Li, Wenyuan; Guan, Bo; Yan, Jianhua; Zhang, Nan; Zhang, Xinxin; Liu, Xingbo

    2016-06-01

    Surface exchange kinetics of Ruddlesden-Popper (R-P) phase lanthanum nickelates upon Mn doping as an intermediate temperature solid oxide fuel cells (IT-SOFCs) cathode is investigated for the first time in this communication. To promote the exchange rate in oxygen reduction reaction (ORR) on nickelates, Mn is partially substituted for Ni. The oxygen exchange resistance is accurately measured by electrochemical impedance spectroscopy (EIS) with dense thin layer cathode. It is found that Mn substantially promotes the surface kinetics; a surface exchange coefficient (k) of 1.57 106 cm/s is obtained at 700 C for La1.8Sr0.2Ni0.9Mn0.1O4þd (Sr20Mn10), ~80% higher than that of the undopedmore » La2NiO4þd (LNO). To our best knowledge, such coefficient is the highest values among the currently available R-P phase IT-SOFC cathodes. The corresponding polarization resistances (Rp) are evaluated on porous electrodes. Rp for LNO is 0.74 Ucm2 at 750 C, but decreases significantly to 0.42 Ucm2 for Sr20Mn10 which is remarkably improved compared to the reported values in the literature for La2MO4þd materials (M ¼ transition metal). Those promising results demonstrate that Mn-doped LNO is a new excellent cathode material for IT-SOFC.« less

  14. Fuel cell system with interconnect

    SciTech Connect

    Liu, Zhien; Goettler, Richard

    2015-09-29

    The present invention includes a fuel cell system having a plurality of adjacent electrochemical cells formed of an anode layer, a cathode layer spaced apart from the anode layer, and an electrolyte layer disposed between the anode layer and the cathode layer. The fuel cell system also includes at least one interconnect, the interconnect being structured to conduct free electrons between adjacent electrochemical cells. Each interconnect includes a primary conductor embedded within the electrolyte layer and structured to conduct the free electrons.

  15. Fuel cell system with interconnect

    SciTech Connect

    Goettler, Richard; Liu, Zhien

    2015-08-11

    The present invention includes a fuel cell system having a plurality of adjacent electrochemical cells formed of an anode layer, a cathode layer spaced apart from the anode layer, and an electrolyte layer disposed between the anode layer and the cathode layer. The fuel cell system also includes at least one interconnect, the interconnect being structured to conduct free electrons between adjacent electrochemical cells. Each interconnect includes a primary conductor embedded within the electrolyte layer and structured to conduct the free electrons.

  16. Fuel cell system with interconnect

    SciTech Connect

    Goettler, Richard; Liu, Zhien

    2015-03-10

    The present invention includes a fuel cell system having a plurality of adjacent electrochemical cells formed of an anode layer, a cathode layer spaced apart from the anode layer, and an electrolyte layer disposed between the anode layer and the cathode layer. The fuel cell system also includes at least one interconnect, the interconnect being structured to conduct free electrons between adjacent electrochemical cells. Each interconnect includes a primary conductor embedded within the electrolyte layer and structured to conduct the free electrons.

  17. Precious Metal Recovery from Fuel Cell MEA's

    SciTech Connect

    Lawrence Shore

    2004-04-25

    In 2003, Engelhard Corporation received a DOE award to develop a cost-effective, environmentally friendly approach to recover Pt from fuel cell membrane electrode assemblies (MEA’s). The most important precious metal used in fuel cells is platinum, but ruthenium is also added to the anode electrocatalyst if CO is present in the hydrogen stream. As part of the project, a large number of measurements of Pt and Ru need to be made. A low-cost approach to measuring Pt is using the industry standard spectrophotometric measurement of Pt complexed with stannous chloride. The interference of Ru can be eliminated by reading the Pt absorbance at 450 nm. Spectrophotometric methods for measuring Ru, while reported in the literature, are not as robust. This paper will discuss the options for measuring Pt and Ru using the method of UV-VIS spectrophotometry

  18. Light Duty Fuel Cell Electric Vehicle Hydrogen Fueling Protocol |

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Department of Energy Fuel Cell Electric Vehicle Hydrogen Fueling Protocol Light Duty Fuel Cell Electric Vehicle Hydrogen Fueling Protocol Download the webinar slides from the U.S. Department of Energy Fuel Cell Technologies Office webinar, "Hydrogen Refueling Protocols," held February 22, 2013. Hydrogen Refueling Protocols Webinar Slides (3.49 MB) More Documents & Publications Introduction to SAE Hydrogen Fueling Standardization Developing SAE Safety Standards for Hydrogen and

  19. Webinar: Hydrogen Fueling for Current and Anticipated Fuel Cell Electric

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Vehicles (FCEVs) | Department of Energy Fueling for Current and Anticipated Fuel Cell Electric Vehicles (FCEVs) Webinar: Hydrogen Fueling for Current and Anticipated Fuel Cell Electric Vehicles (FCEVs) Below is the text version of the webinar titled "Hydrogen Fueling for Current and Anticipated Fuel Cell Electric Vehicles (FCEVs)," originally presented on June 24, 2014. In addition to this text version of the audio, you can access the presentation slides. Alli Aman: [Audio starts

  20. DOE Hydrogen and Fuel Cells Program Record, Record # 13008: Industry Deployed Fuel Cell Powered Lift Trucks

    Energy.gov [DOE]

    This program record from the DOE Hydrogen and Fuel Cells Program focuses on deployments of fuel cell powered lift trucks.

  1. SunLine Expands Horizons with Fuel Cell Bus Demo. Hydrogen, Fuel Cells &

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Infrastructure Technologies Program, Fuel Cell Bus Demonstration Projects (Fact Sheet). | Department of Energy Expands Horizons with Fuel Cell Bus Demo. Hydrogen, Fuel Cells & Infrastructure Technologies Program, Fuel Cell Bus Demonstration Projects (Fact Sheet). SunLine Expands Horizons with Fuel Cell Bus Demo. Hydrogen, Fuel Cells & Infrastructure Technologies Program, Fuel Cell Bus Demonstration Projects (Fact Sheet). Fact sheet describes the study being conducted on fuel cell

  2. Water Emissions from Fuel Cell Vehicles | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Fuel Cells Water Emissions from Fuel Cell Vehicles Water Emissions from Fuel Cell Vehicles Hydrogen fuel cell vehicles (FCVs) emit approximately the same amount of water per ...

  3. INFOGRAPHIC: The Fuel Cell Electric Vehicle | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    INFOGRAPHIC: The Fuel Cell Electric Vehicle INFOGRAPHIC: The Fuel Cell Electric Vehicle INFOGRAPHIC: The Fuel Cell Electric Vehicle This infographic shows how fuel cell electric ...

  4. Hydrogen and Fuel Cells Program Overview: 2013 Annual Merit Review...

    Energy.gov [DOE] (indexed site)

    DOE Fuel Cell Technologies Office: 2013 Fuel Cell Seminar and Energy Exposition Fuel Cell Technologies Program - DOD-DOE Workshop: Shipboard APUs Overview Hydrogen and Fuel Cells ...

  5. Li-alloy electrode for Li-alloy/metal sulfide cells

    DOEpatents

    Kaun, Thomas D.

    1996-01-01

    A method of making a negative electrode, the electrode made thereby and a secondary electrochemical cell using the electrode. Lithium, silicon and nickel is alloyed in a prescribed proportion forming an electroactive material, to provide an improved electrode and cell.

  6. Negative Electrodes Improve Safety in Lithium Cells and Batteries...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Negative Electrodes Improve Safety in Lithium Cells and Batteries Technology available for licensing: Enhanced stability at a lower cost Lowers cost for enhanced stability ...

  7. Layered Electrodes for Lithium Cells and Batteries | Argonne...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Electrodes for Lithium Cells and Batteries Technology available for licensing: Layered lithium metal oxide compounds for ultra-high-capacity, rechargeable cathodes Lowers cost to ...

  8. Alternative Fuels Data Center: How Do Fuel Cell Electric Cars...

    Alternative Fuels and Advanced Vehicles Data Center

    Fuel tank (hydrogen): Stores hydrogen on board the vehicle until it's needed by the fuel cell. Power electronics controller: This unit manages the flow of electrical energy ...

  9. Evaluation of Stationary Fuel Cell Deployments, Costs, and Fuels (Presentation)

    SciTech Connect

    Ainscough, C.; Kurtz, J.; Peters, M.; Saur, G.

    2013-10-01

    This presentation summarizes NREL's technology validation of stationary fuel cell systems and presents data on number of deployments, system costs, and fuel types.

  10. Webinar: Hydrogen Fueling for Current and Anticipated Fuel Cell...

    Energy.gov [DOE] (indexed site)

    Below is the text version of the webinar titled "Hydrogen Fueling for Current and ... what's going on in the world of hydrogen and fuel cells and especially what's ...

  11. Fuel Cells for Portable Power: 1. Introduction to DMFCs; 2. Advanced Materials and Concepts for Portable Power Fuel Cells

    SciTech Connect

    Zelenay, Piotr

    2012-07-16

    Thanks to generally less stringent cost constraints, portable power fuel cells, the direct methanol fuel cell (DMFC) in particular, promise earlier market penetration than higher power polymer electrolyte fuel cells (PEFCs) for the automotive and stationary applications. However, a large-scale commercialization of DMFC-based power systems beyond niche applications already targeted by developers will depend on improvements to fuel cell performance and performance durability as well as on the reduction in cost, especially of the portable systems on the higher end of the power spectrum (100-250 W). In this part of the webinar, we will focus on the development of advanced materials (catalysts, membranes, electrode structures, and membrane electrode assemblies) and fuel cell operating concepts capable of fulfilling two key targets for portable power systems: the system cost of $5/W and overall fuel conversion efficiency of 2.0-2.5 kWh/L. Presented research will concentrate on the development of new methanol oxidation catalysts, hydrocarbon membranes with reduced methanol crossover, and improvements to component durability. Time permitted, we will also present a few highlights from the development of electrocatalysts for the oxidation of two alternative fuels for the direct-feed fuel cells: ethanol and dimethyl ether.

  12. Advanced materials for solid oxide fuel cells

    SciTech Connect

    Armstrong, T.; Stevenson, J.

    1995-12-31

    The purpose of this research is to improve the properties of the current state-of-the-art materials used for solid oxide fuel cells (SOFCs). The objectives are to: (1) develop materials based on modifications of the state-of-the-art materials; (2) minimize or eliminate stability problems in the cathode, anode, and interconnect; (3) Electrochemically evaluate (in reproducible and controlled laboratory tests) the current state-of-the-art air electrode materials and cathode/electrolyte interfacial properties; (4) Develop accelerated electrochemical test methods to evaluate the performance of SOFCs under controlled and reproducible conditions; and (5) Develop and test materials for use in low-temperature SOFCs.

  13. Fuel Cell Buses | Department of Energy

    Energy.gov [DOE] (indexed site)

    Download presentation slides from the DOE Fuel Cell Technologies Office webinar "Fuel Cell Buses" held on September 12, 2013. Fuel Cell Buses Webinar Slides (2.44 MB) More ...

  14. fuel cell | OpenEI Community

    OpenEI (Open Energy Information) [EERE & EIA]

    fuel cell Home Dc's picture Submitted by Dc(266) Contributor 19 February, 2015 - 15:08 2016 Toyota Mirai Fuel Cell Car First Drive - HybridCars.com Review 2016 car fuel cell hybrid...

  15. Fuel Cell Europe | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Name: Fuel Cell Europe Place: FrankfurtM, Germany Zip: D-60313 Product: Fuel Cell Europe was set up to promote the commercial application of fuel cell across Europe. Coordinates:...

  16. EPG Fuel Cell LLc | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    EPG Fuel Cell LLc Jump to: navigation, search Name: EPG Fuel Cell LLc Place: Maryland Product: 50-50 JV between Catamount Energy and Elemental Power. References: EPG Fuel Cell...

  17. Dupont Fuel Cells | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Dupont Fuel Cells Jump to: navigation, search Name: Dupont Fuel Cells Place: Wilmington, Delaware Zip: DE 19880-0 Product: A subsidiary of Dupont which specializes in fuel cell...

  18. CMR Fuel Cells Ltd | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    CMR Fuel Cells Ltd Jump to: navigation, search Name: CMR Fuel Cells Ltd Place: Cambridge, England, United Kingdom Zip: CB2 5GG Product: Cambridge-based firm developing fuel cell...

  19. Ohio Fuel Cell Initiative | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    (400.77 KB) More Documents & Publications Raising H2 and Fuel Cell Awareness in Ohio Fuel Cells & Renewable Portfolio Standards State of the States: Fuel Cells in America 2014

  20. Fuel Cells for Critical Communications Backup Power

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    6, 2008 APCO Annual Conference and Expo 2 2 Fuel cells use hydrogen to create electricity, with only water and heat as byproducts Fuel Cell Overview * An individual fuel cell ...

  1. Navy fuel cell demonstration project.

    SciTech Connect

    Black, Billy D.; Akhil, Abbas Ali

    2008-08-01

    This is the final report on a field evaluation by the Department of the Navy of twenty 5-kW PEM fuel cells carried out during 2004 and 2005 at five Navy sites located in New York, California, and Hawaii. The key objective of the effort was to obtain an engineering assessment of their military applications. Particular issues of interest were fuel cell cost, performance, reliability, and the readiness of commercial fuel cells for use as a standalone (grid-independent) power option. Two corollary objectives of the demonstration were to promote technological advances and to improve fuel performance and reliability. From a cost perspective, the capital cost of PEM fuel cells at this stage of their development is high compared to other power generation technologies. Sandia National Laboratories technical recommendation to the Navy is to remain involved in evaluating successive generations of this technology, particularly in locations with greater environmental extremes, and it encourages their increased use by the Navy.

  2. Fuel cell separator with compressible sealing flanges

    DOEpatents

    Mientek, A.P.

    1984-03-30

    A separator for separating adjacent fuel cells in a stack of such cells includes a flat, rectangular, gas-impermeable plate disposed between adjacent cells and having two opposite side margins thereof folded back over one side of the plate to form two first seal flanges and having the other side margins thereof folded back over the opposite side of the plate to form two second seal flanges, each of the seal flanges cooperating with the plate to define a channel in which is disposed a resiliently compressible stack of thin metal sheets. The two first seal flanges cooperate with the electrolyte matrix of one of the cells to form a gas-impermeable seal between an electrode of the one cell and one of two reactant gas manifolds. The second seal flanges cooperate with the electrolyte matrix of the other cell for forming a gas-impermeable seal between an electrode of the other cell and the other of the two reactant gas manifolds. The seal flanges cooperate with the associated compressible stacks of sheets for maintaining a spacing between the plate and the electrolyte matrices while accommodating variation of that spacing.

  3. Fuel cell separator with compressible sealing flanges

    DOEpatents

    Mientek, Anthony P.

    1985-04-30

    A separator for separating adjacent fuel cells in a stack of such cells includes a flat, rectangular, gas-impermeable plate disposed between adjacent cells and having two opposite side margins thereof folded back over one side of the plate to form two first seal flanges and having the other side margins thereof folded back over the opposite side of the plate to form two second seal flanges, each of the seal flanges cooperating with the plate to define a channel in which is disposed a resiliently compressible stack of thin metal sheets. The two first seal flanges cooperate with the electrolyte matrix of one of the cells to form a gas-impermeable seal between an electrode of the one cell and one of two reactant gas manifolds. The second seal flanges cooperate with the electrolyte matrix of the other cell for forming a gas-impermeable seal between an electrode of the other cell and the other of the two reactant gas manifolds. The seal flanges cooperate with the associated compressible stacks of sheets for maintaining a spacing between the plate and the electrolyte matrices while accommodating variation of that spacing.

  4. Fuel Cells at Supermarkets: NYSERDA's Perspective

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    at Supermarkets: NYSERDA's Perspective Scott Larsen, Project Manager On-Site Power Team 2 NYSERDA Programs to Install Fuel Cells * Distributed Generation as Combined Heat and Power - 14 Fuel Cell as CHP Systems Installed Since 2002 * Renewable Portfolio Standard (RPS) Customer Sited Tier (CST)Fuel Cell Program - $21.6 Million through 2015 - 1 Large Fuel Cell System and 23 Small Fuel Cell Systems Since 2007 3 Benefits of Fuel Cells * Efficient Means of Electric Generation (~40-50%) * High Quality

  5. National Fuel Cell Technology Evaluation Center (NFCTEC)

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    National Fuel Cell Technology Evaluation Center (NFCTEC) Jim Alkire U.S. Department of Energy Fuel Cell Technologies Office Jennifer Kurtz & Sam Sprik National Renewable Energy Laboratory 2 Outline * About NFCTEC * Benefits to the Hydrogen & Fuel Cell Community * New Fuel Cell Cost/Price Aggregation Project About NFCTEC 4 National Fuel Cell Technology Evaluation Center a national resource for hydrogen and fuel cell stakeholders supported through Energy Efficiency and Renewable Energy's

  6. Hydrogen and Fuel Cells Program Plenary Presentation

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    U.S. Department of Energy Hydrogen & Fuel Cells Program Annual Merit Review and Peer Evaluation Meeting Dr. Sunita Satyapal Director Fuel Cell Technologies Office U.S. Department of Energy June 2014 2 | Fuel Cell Technologies Office eere.energy.gov Fuel Cell Market Market Growth Fuel cell markets continue to grow * >25% increase in global MWs shipped since 2012 * 35% increase in revenues from fuel cell systems shipped over last year * Consistent ~30% annual growth in global systems

  7. Fuel cell with internal flow control

    DOEpatents

    Haltiner, Jr., Karl J.; Venkiteswaran, Arun

    2012-06-12

    A fuel cell stack is provided with a plurality of fuel cell cassettes where each fuel cell cassette has a fuel cell with an anode and cathode. The fuel cell stack includes an anode supply chimney for supplying fuel to the anode of each fuel cell cassette, an anode return chimney for removing anode exhaust from the anode of each fuel cell cassette, a cathode supply chimney for supplying oxidant to the cathode of each fuel cell cassette, and a cathode return chimney for removing cathode exhaust from the cathode of each fuel cell cassette. A first fuel cell cassette includes a flow control member disposed between the anode supply chimney and the anode return chimney or between the cathode supply chimney and the cathode return chimney such that the flow control member provides a flow restriction different from at least one other fuel cell cassettes.

  8. Corrosion resistant PEM fuel cell

    DOEpatents

    Li, Y.; Meng, W.J.; Swathirajan, S.; Harris, S.J.; Doll, G.L.

    1997-04-29

    The present invention contemplates a PEM fuel cell having electrical contact elements (including bipolar plates/septums) comprising a titanium nitride coated light weight metal (e.g., Al or Ti) core, having a passivating, protective metal layer intermediate the core and the titanium nitride. The protective layer forms a barrier to further oxidation/corrosion when exposed to the fuel cell`s operating environment. Stainless steels rich in Cr, Ni, and Mo are particularly effective protective interlayers. 6 figs.

  9. Nanodisperse transition metal electrodes (NTME) for electrochemical cells

    DOEpatents

    Striebel, Kathryn A.; Wen, Shi-Jie

    2000-01-01

    Disclosed are transition metal electrodes for electrochemical cells using gel-state and solid-state polymers. The electrodes are suitable for use in primary and secondary cells. The electrodes (either negative electrode or positive electrode) are characterized by uniform dispersion of the transition metal at the nanoscale in the polymer. The transition metal moiety is structurally amorphous, so no capacity fade should occur due to lattice expansion/contraction mechanisms. The small grain size, amorphous structure and homogeneous distribution provide improved charge/discharge cycling performance, and a higher initial discharge rate capability. The cells can be cycled at high current densities, limited only by the electrolyte conductivity. A method of making the electrodes (positive and negative), and their usage in electrochemical cells are disclosed.

  10. Light Duty Fuel Cell Electric Vehicle Hydrogen Fueling Protocol

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    DOE Webinar Light Duty Fuel Cell Electric Vehicle Hydrogen Fueling Protocol U.S. DOE WEBINAR ON H2 FUELING PROTOCOLS: PARTICIPANTS Rob Burgess Moderator Jesse Schneider TIR J2601, ...

  11. Porous electrolyte retainer for molten carbonate fuel cell

    DOEpatents

    Singh, Raj N.; Dusek, Joseph T.

    1983-06-21

    A porous tile for retaining molten electrolyte within a fuel cell is prepared by sintering particles of lithium aluminate into a stable structure. The tile is assembled between two porous metal plates which serve as electrodes with fuels gases such as H.sub.2 and CO opposite to oxidant gases such as O.sub.2 and CO.sub.2. The tile is prepared with a porosity of 55-65% and a pore size distribution selected to permit release of sufficient molten electrolyte to wet but not to flood the adjacent electrodes.

  12. Porous electrolyte retainer for molten carbonate fuel cell. [lithium aluminate

    DOEpatents

    Singh, R.N.; Dusek, J.T.

    1979-12-27

    A porous tile for retaining molten electrolyte within a fuel cell is prepared by sintering particles of lithium aluminate into a stable structure. The tile is assembled between two porous metal plates which serve as electrodes with fuels gases such as H/sub 2/ and CO opposite to oxidant gases such as O/sub 2/ and CO/sub 2/. The tile is prepared with a porosity of 55 to 65% and a pore size distribution selected to permit release of sufficient molten electrolyte to wet but not to flood the adjacent electrodes.

  13. Fuel Cell Financing Options | Department of Energy

    Energy.gov [DOE] (indexed site)

    Department of Energy Webinar: Financing Fuel Cell Installations, August 30, 2011. ... Case for Fuel Cells 2011: Energizing America's Top Companies PAFC Cost Challenges

  14. Pacific Fuel Cell Corporation | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Fuel Cell Corporation Jump to: navigation, search Name: Pacific Fuel Cell Corporation Address: 26985 Lakeland Blvd. Place: Euclid, Ohio Zip: 44132 Sector: Buildings, Efficiency,...

  15. Advanced Fuel Cell Systems | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Fuel Cell Systems Jump to: navigation, search Name: Advanced Fuel Cell Systems Place: Amherst, New York Zip: 14228 Product: Collaboration of three companies (ATSI Engineering,...

  16. Nuvera Fuel Cells Inc | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Place: Billerica, Massachusetts Zip: 1821 Product: US-based developer of bipolar fuel cell stack plates to develop Proton Exchange Membrane (PEM) fuel cells. Coordinates:...

  17. Fuel Cell Technologies Office | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Transportation Fuel Cell Technologies Office Fuel Cell Technologies Office Sustainable Transportation Summit: July 11-12 Sustainable Transportation Summit: July 11-12 Read more ...

  18. Hoku Fuel Cells | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Hoku Fuel Cells Jump to: navigation, search Name: Hoku Fuel Cells Place: Honolulu, Hawaii Zip: 96814 Product: Hawaii-based, subsidiary of Hoku Scientific Inc, developer,...

  19. Fuel Cells America LLC | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    LLC Jump to: navigation, search Name: Fuel Cells America LLC Place: Mount Horeb, Wisconsin Zip: 53572 Product: Consulting service and commissioned fuel cell sales division....

  20. Fuel Cells 2000 | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Fuel Cells 2000 Place: Washington DC, Washington, DC Zip: 20005 Product: A non-profit project providing educational informaiton on fuel cells to the general public and private...

  1. Fuel Cell Animation- Chemical Process (Text Version)

    Energy.gov [DOE]

    This text version of the fuel cell animation demonstrates how a fuel cell uses hydrogen to produce electricity, with only water and heat as byproducts.

  2. Fuel Cells News | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    | Photos by Sarah Gerrity, Energy Department EERE Energy Impacts: You Can Now Drive a Fuel Cell Electric Vehicle Fuel cell electric vehicles (FCEVs) are now commercially...

  3. National Hydrogen and Fuel Cell Day

    Office of Energy Efficiency and Renewable Energy (EERE)

    Join us on Thursday, October 8, in celebrating the first National Hydrogen and Fuel Cell Day! In 2013, auto manufacturers started announcing fuel cell electric vehicle (FCEV) commercialization...

  4. Fuel Cell Store Inc | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Name: Fuel Cell Store, Inc Place: San Diego, California Zip: 92154 Sector: Hydro, Hydrogen Product: San Diego-based firm selling fuel cell stacks, components, and hydrogen...

  5. Overview of Hydrogen and Fuel Cells

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    H2-Fuel Cell Systems vs Batteries At DOEUSABC Targets * A ... Adapted from GM 4 | Fuel Cell Technologies Program Source: ... carbon renewable electricity includes wind, solar, etc. ...

  6. Overview of Hydrogen Fuel Cell Budget

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Budget FUEL CELL TECHNOLOGIES PROGRAM Stakeholders Webinar - Budget Briefing Sunita Satyapal U.S. Department of Energy Fuel Cell Technologies Program Program Manager February 24, ...

  7. 2015 Fuel Cell Technologies Market Report

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    FUEL CELL TECHNOLOGIES MARKET REPORT 2015 Authors This report was compiled and written by Sandra Curtin and Jennifer Gangi of the Fuel Cell and Hydrogen Energy Association, in ...

  8. Fuel Cell School Buses: Report to Congress

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Activities, Progress, and Plans: Report to Congress ii December 2008 Fuel Cell School Buses Report to Congress Fuel Cell School Buses: Report to Congress Preface This Department of ...

  9. DOE Hydrogen and Fuel Cell Overview

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Energy Sustainability, Washington, DC DOE Hydrogen and Fuel Cell Overview Dr. Sunita Satyapal U.S. Department of Energy Fuel Cell Technologies Program Program Manager August 8, ...

  10. hydrogen-fuel-cell-powered generator

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    hydrogen-fuel-cell-powered generator - Sandia Energy Energy Search Icon Sandia Home ... SunShot Grand Challenge: Regional Test Centers hydrogen-fuel-cell-powered generator Home...

  11. EERE Announces Notice of Intent to Issue Fuel Cell Technologies Incubator: Innovations in Fuel Cell and Hydrogen Fuels Technologies FOA

    Energy.gov [DOE]

    EERE intends to issue, on behalf of its Fuel Cell Technologies Office, a Funding Opportunity Announcement (FOA) entitled "Fuel Cell Technologies Incubator: Innovations in Fuel Cell and Hydrogen Fuels Technologies."

  12. Wick-and-pool electrodes for electrochemical cell

    DOEpatents

    Roche, Michael F.; Faist, Suzan M.; Eberhart, James G.; Ross, Laurids E.

    1980-01-01

    An electrode system includes a reservoir of liquid-metal reactant, and a wick extending from a submersed location within the reservoir into the molten electrolyte of an electrochemical cell structure. The wick is flooded with the liquid metal and thereby serves as one electrode within the cell. This electrode system has application in high-temperature batteries employing molten alkali metals or their alloys as active material within an electrode submersed within a molten salt electrolyte. It also can be used in electrochemical cells where the purification, separation or electrowinning of liquid metals is accomplished.

  13. Wick-and-pool electrodes for electrochemical cell

    DOEpatents

    Roche, Michael F.; Faist, Suzan M.; Eberhart, James G.; Ross, Laurids E.

    1977-01-01

    An electrode system includes a reservoir of liquid-metal reactant, and a wick extending from a submersed location within the reservoir into the molten electrolyte of an electrochemical cell structure. The wick is flooded with the liquid metal and thereby serves as one electrode within the cell. This electrode system has application in high-temperature batteries employing molten alkali metals or their alloys as active material within an electrode submersed within a molten salt electrolyte. It also can be used in electrochemical cells where the purification, separation or electrowinning of liquid metals is accomplished.

  14. Electrochemical cell having an alkali-metal-nitrate electrode

    DOEpatents

    Roche, M.F.; Preto, S.K.

    1982-06-04

    A power-producing secondary electrochemical cell includes a molten alkali metal as the negative-electrode material and a molten-nitrate salt as the positive-electrode material. The molten material in the respective electrodes are separated by a solid barrier of alkali-metal-ion conducting material. A typical cell includes active materials of molten sodium separated from molten sodium nitrate and other nitrates in mixture by a layer of sodium ..beta..'' alumina.

  15. Molten carbonate fuel cell reduction of nickel deposits

    DOEpatents

    Smith, James L. (Lemont, IL); Zwick, Stanley A. (Darien, IL)

    1987-01-01

    A molten carbonate fuel cell with anode and cathode electrodes and an eleolyte formed with two tile sections, one of the tile sections being adjacent the anode and limiting leakage of fuel gas into the electrolyte with the second tile section being adjacent the cathode and having pores sized to permit the presence of oxygen gas in the electrolyte thereby limiting the formation of metal deposits caused by the reduction of metal compositions migrating into the electrolyte from the cathode.

  16. Fuel Cell Research

    SciTech Connect

    Weber, Peter M.

    2014-03-30

    Executive Summary In conjunction with the Brown Energy Initiative, research Projects selected for the fuel cell research grant were selected on the following criteria: They should be fundamental research that has the potential to significantly impact the nation’s energy infrastructure. They should be scientifically exciting and sound. They should synthesize new materials, lead to greater insights, explore new phenomena, or design new devices or processes that are of relevance to solving the energy problems. They involve top-caliper senior scientists with a record of accomplishment, or junior faculty with outstanding promise of achievement. They should promise to yield at least preliminary results within the given funding period, which would warrant further research development. They should fit into the overall mission of the Brown Energy Initiative, and the investigators should contribute as partners to an intellectually stimulating environment focused on energy science. Based on these criteria, fourteen faculty across three disciplines (Chemistry, Physics and Engineering) and the Charles Stark Draper Laboratory were selected to participate in this effort.1 In total, there were 30 people supported, at some level, on these projects. This report highlights the findings and research outcomes of the participating researchers.

  17. Porosimetry as an effective method of fuel cell investigation

    SciTech Connect

    Kazarinov, V.E.

    1996-04-01

    A porosimetric method is described for the investigation of all kinds of porous materials including soft or frail materials and powders. The method is well suited for the investigation of electrodes in fuel cells and batteries. The method is nondestructive and allows for repeated measurements on the same sample.

  18. Method of forming densified edge seals for fuel cell components

    DOEpatents

    DeCasperis, Anthony J.; Roethlein, Richard J.; Breault, Richard D.

    1981-01-01

    A porous fuel cell component, such as an electrode substrate, has a densified edge which forms an improved gas seal during operation when soaked with electrolyte. The edges are made from the same composition as the rest of the component and are made by compressing an increased thickness of this material along the edges during the fabrication process.

  19. NREL: Hydrogen and Fuel Cells Research - Fuel Cell System Contaminants

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Material Screening Data System Contaminants Material Screening Data NREL designed this interactive material selector tool to help fuel cell developers and material suppliers explore the results of fuel cell system contaminants studies, which were performed in collaboration with General Motors, the University of South Carolina, and the Colorado School of Mines. Select from the drop-down lists of materials to see the screening data collected from multiple methods. You can also view the data

  20. Water reactive hydrogen fuel cell power system

    SciTech Connect

    Wallace, Andrew P; Melack, John M; Lefenfeld, Michael

    2014-11-25

    A water reactive hydrogen fueled power system includes devices and methods to combine reactant fuel materials and aqueous solutions to generate hydrogen. The generated hydrogen is converted in a fuel cell to provide electricity. The water reactive hydrogen fueled power system includes a fuel cell, a water feed tray, and a fuel cartridge to generate power for portable power electronics. The removable fuel cartridge is encompassed by the water feed tray and fuel cell. The water feed tray is refillable with water by a user. The water is then transferred from the water feed tray into the fuel cartridge to generate hydrogen for the fuel cell which then produces power for the user.

  1. Water reactive hydrogen fuel cell power system

    DOEpatents

    Wallace, Andrew P; Melack, John M; Lefenfeld, Michael

    2014-01-21

    A water reactive hydrogen fueled power system includes devices and methods to combine reactant fuel materials and aqueous solutions to generate hydrogen. The generated hydrogen is converted in a fuel cell to provide electricity. The water reactive hydrogen fueled power system includes a fuel cell, a water feed tray, and a fuel cartridge to generate power for portable power electronics. The removable fuel cartridge is encompassed by the water feed tray and fuel cell. The water feed tray is refillable with water by a user. The water is then transferred from the water feed tray into a fuel cartridge to generate hydrogen for the fuel cell which then produces power for the user.

  2. Hydrogen & Fuel Cells | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Efficiency » Vehicles » Hydrogen & Fuel Cells Hydrogen & Fuel Cells Watch this video to find out how fuel cell technology generates clean electricity from hydrogen to power our buildings and transportation-while emitting nothing but water. Learn more about hydrogen and fuel cell technology basics. Fuel cells produce electricity from a number of domestic fuels, including hydrogen and renewables, and can provide power for virtually any application -- from cars and buses to commercial

  3. All ceramic structure for molten carbonate fuel cell

    DOEpatents

    Smith, James L.; Kucera, Eugenia H.

    1992-01-01

    An all-ceramic molten carbonate fuel cell having a composition formed of a multivalent metal oxide or oxygenate such as an alkali metal, transition metal oxygenate. The structure includes an anode and cathode separated by an electronically conductive interconnect. The electrodes and interconnect are compositions ceramic materials. Various combinations of ceramic compositions for the anode, cathode and interconnect are disclosed. The fuel cell exhibits stability in the fuel gas and oxidizing environments. It presents reduced sealing and expansion problems in fabrication and has improved long-term corrosion resistance.

  4. Calling All Fuel Cells | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Calling All Fuel Cells Calling All Fuel Cells December 7, 2012 - 4:31pm Addthis Altergy had more than 60 fuel cells in the immediate Hurricane Sandy disaster area that acted as backup power for cell phone towers. | Photo courtesy of Altergy. Altergy had more than 60 fuel cells in the immediate Hurricane Sandy disaster area that acted as backup power for cell phone towers. | Photo courtesy of Altergy. Sunita Satyapal Director, Fuel Cell Technologies Office What is a fuel cell? A fuel cell is a

  5. Overview of DOE Hydrogen and Fuel Cell Activities: 2010 Gordon...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    DOE Hydrogen and Fuel Cell Activities: 2010 Gordon Research Conference on Fuel Cells Overview of DOE Hydrogen and Fuel Cell Activities: 2010 Gordon Research Conference on Fuel ...

  6. Moving toward a commercial market for hydrogen fuel cell vehicles...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Moving toward a commercial market for hydrogen fuel cell vehicles Moving toward a commercial market for hydrogen fuel cell vehicles Fuel cell vehicles and fueling stations PDF icon ...

  7. DAVID Fuel Cell Components SL | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    manufacture and marketing of components and devices for PEM fuel cells, direct methanol fuel cells (DMFC) and fuel reformers. References: DAVID Fuel Cell Components SL1...

  8. Hybrid deposition of thin film solid oxide fuel cells and electrolyzers

    DOEpatents

    Jankowski, Alan F.; Makowiecki, Daniel M.; Rambach, Glenn D.; Randich, Erik

    1999-01-01

    The use of vapor deposition techniques enables synthesis of the basic components of a solid oxide fuel cell (SOFC); namely, the electrolyte layer, the two electrodes, and the electrolyte-electrode interfaces. Such vapor deposition techniques provide solutions to each of the three critical steps of material synthesis to produce a thin film solid oxide fuel cell (TFSOFC). The electrolyte is formed by reactive deposition of essentially any ion conducting oxide, such as defect free, yttria stabilized zirconia (YSZ) by planar magnetron sputtering. The electrodes are formed from ceramic powders sputter coated with an appropriate metal and sintered to a porous compact. The electrolyte-electrode interface is formed by chemical vapor deposition of zirconia compounds onto the porous electrodes to provide a dense, smooth surface on which to continue the growth of the defect-free electrolyte, whereby a single fuel cell or multiple cells may be fabricated.

  9. Hybrid deposition of thin film solid oxide fuel cells and electrolyzers

    DOEpatents

    Jankowski, A.F.; Makowiecki, D.M.; Rambach, G.D.; Randich, E.

    1998-05-19

    The use of vapor deposition techniques enables synthesis of the basic components of a solid oxide fuel cell (SOFC); namely, the electrolyte layer, the two electrodes, and the electrolyte-electrode interfaces. Such vapor deposition techniques provide solutions to each of the three critical steps of material synthesis to produce a thin film solid oxide fuel cell (TFSOFC). The electrolyte is formed by reactive deposition of essentially any ion conducting oxide, such as defect free, yttria stabilized zirconia (YSZ) by planar magnetron sputtering. The electrodes are formed from ceramic powders sputter coated with an appropriate metal and sintered to a porous compact. The electrolyte-electrode interface is formed by chemical vapor deposition of zirconia compounds onto the porous electrodes to provide a dense, smooth surface on which to continue the growth of the defect-free electrolyte, whereby a single fuel cell or multiple cells may be fabricated. 8 figs.

  10. Hybrid deposition of thin film solid oxide fuel cells and electrolyzers

    DOEpatents

    Jankowski, Alan F.; Makowiecki, Daniel M.; Rambach, Glenn D.; Randich, Erik

    1998-01-01

    The use of vapor deposition techniques enables synthesis of the basic components of a solid oxide fuel cell (SOFC); namely, the electrolyte layer, the two electrodes, and the electrolyte-electrode interfaces. Such vapor deposition techniques provide solutions to each of the three critical steps of material synthesis to produce a thin film solid oxide fuel cell (TFSOFC). The electrolyte is formed by reactive deposition of essentially any ion conducting oxide, such as defect free, yttria stabilized zirconia (YSZ) by planar magnetron sputtering. The electrodes are formed from ceramic powders sputter coated with an appropriate metal and sintered to a porous compact. The electrolyte-electrode interface is formed by chemical vapor deposition of zirconia compounds onto the porous electrodes to provide a dense, smooth surface on which to continue the growth of the defect-free electrolyte, whereby a single fuel cell or multiple cells may be fabricated.

  11. Metrology for Fuel Cell Manufacturing

    SciTech Connect

    Stocker, Michael; Stanfield, Eric

    2015-02-04

    The project was divided into three subprojects. The first subproject is Fuel Cell Manufacturing Variability and Its Impact on Performance. The objective was to determine if flow field channel dimensional variability has an impact on fuel cell performance. The second subproject is Non-contact Sensor Evaluation for Bipolar Plate Manufacturing Process Control and Smart Assembly of Fuel Cell Stacks. The objective was to enable cost reduction in the manufacture of fuel cell plates by providing a rapid non-contact measurement system for in-line process control. The third subproject is Optical Scatterfield Metrology for Online Catalyst Coating Inspection of PEM Soft Goods. The objective was to evaluate the suitability of Optical Scatterfield Microscopy as a viable measurement tool for in situ process control of catalyst coatings.

  12. CLIMATE CHANGE FUEL CELL PROGRAM

    SciTech Connect

    Mike Walneuski

    2004-09-16

    ChevronTexaco has successfully operated a 200 kW PC25C phosphoric acid fuel cell power plant at the corporate data center in San Ramon, California for the past two years and seven months following installation in December 2001. This site was chosen based on the ability to utilize the combined heat (hot water) and power generation capability of this modular fuel cell power plant in an office park setting . In addition, this project also represents one of the first commercial applications of a stationary fuel cell for a mission critical data center to assess power reliability benefits. This fuel cell power plant system has demonstrated outstanding reliability and performance relative to other comparably sized cogeneration systems.

  13. Additive Manufacturing for Fuel Cells

    Energy.gov [DOE]

    Blake Marshall, AMO's lead for Additive Manufacturing Technologies, will provide an overview of current R&D activities in additive manufacturing and its application to fuel cell prototyping and...

  14. Porous coolant tube holder for fuel cell stack

    DOEpatents

    Guthrie, Robin J. (East Hartford, CT)

    1981-01-01

    A coolant tube holder for a stack of fuel cells is a gas porous sheet of fibrous material adapted to be sandwiched between a cell electrode and a nonporous, gas impervious flat plate which separates adjacent cells. The porous holder has channels in one surface with coolant tubes disposed therein for carrying coolant through the stack. The gas impervious plate is preferably bonded to the opposite surface of the holder, and the channel depth is the full thickness of the holder.

  15. Combination nickel foam expanded nickel screen electrical connection supports for solid oxide fuel cells

    DOEpatents

    Draper, Robert; Prevish, Thomas; Bronson, Angela; George, Raymond A.

    2007-01-02

    A solid oxide fuel assembly is made, wherein rows (14, 25) of fuel cells (17, 19, 21, 27, 29, 31), each having an outer interconnection (20) and an outer electrode (32), are disposed next to each other with corrugated, electrically conducting expanded metal mesh member (22) between each row of cells, the corrugated mesh (22) having top crown portions and bottom portions, where the top crown portion (40) have a top bonded open cell nickel foam (51) which contacts outer interconnections (20) of the fuel cells, said mesh and nickel foam electrically connecting each row of fuel cells, and where there are no more metal felt connections between any fuel cells.

  16. Hydrogen and Fuel Cells Program Overview: Hydrogen and Fuel Cells 2011

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    International Conference | Department of Energy Hydrogen and Fuel Cells 2011 International Conference Hydrogen and Fuel Cells Program Overview: Hydrogen and Fuel Cells 2011 International Conference Presentation by Sunita Satyapal at the Hydrogen and Fuel Cells 2011 International Conference on May 17, 2011. Hydrogen and Fuel Cells Program Overview (3.21 MB) More Documents & Publications Fuel Cell Technologies Program - DOD-DOE Workshop: Shipboard APUs Overview DOE Fuel Cell Technologies

  17. Fuel Cell Hybrid Bus Lands at Hickam AFB: Hydrogen Fuel Cell &

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Infrastructure Technologies Program, Fuel Cell Bus Demonstration Project (Fact Sheet) | Department of Energy Hybrid Bus Lands at Hickam AFB: Hydrogen Fuel Cell & Infrastructure Technologies Program, Fuel Cell Bus Demonstration Project (Fact Sheet) Fuel Cell Hybrid Bus Lands at Hickam AFB: Hydrogen Fuel Cell & Infrastructure Technologies Program, Fuel Cell Bus Demonstration Project (Fact Sheet) Fact sheet describes the initiation of NREL's evaluation of a fuel cell hybrid electric bus

  18. DOE Fuel Cell Technologies Program Record, Record # 11003, Fuel Cell Stack

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Durability | Department of Energy Program Record, Record # 11003, Fuel Cell Stack Durability DOE Fuel Cell Technologies Program Record, Record # 11003, Fuel Cell Stack Durability Dated May 3, 2012, this program record from the U.S. Department of Energy focuses on fuel cell stack durability. 11003_fuel_cell_stack_durability.pdf (256.72 KB) More Documents & Publications US DRIVE Fuel Cell Technical Team Roadmap Advanced Cathode Catalysts and Supports for PEM Fuel Cells Overview of DOE

  19. Fuel Cell Power (FCPower) Model

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    (FCPower) Model (National Renewable Energy Laboratory) Objectives Serve as a financial tool for analyzing high-temperature, fuel cell-based tri- generation systems. 1 Key Attributes & Strengths Evaluates integration of building electricity and heat energy flows with hydrogen production. Performs hourly energy analysis and detailed grid time of use cost evaluations, which then feed into a discounted cash flow evaluation. Ability to analyze several fuel cell technologies: molten carbonate,

  20. Stationary Fuel Cell Evaluation (Presentation)

    SciTech Connect

    Kurtz, J.; Wipke, K.; Sprik, S.; Ramsden, T.; Ainscough, C.

    2012-05-01

    This powerpoint presentation discusses its objectives: real world operation data from the field and state-of-the-art lab; collection; analysis for independent technology validation; collaboration with industry and end users operating stationary fuel cell systems and reporting on technology status, progress and technical challenges. The approach and accomplishments are: A quarterly data analysis and publication of first technical stationary fuel cell composite data products (data through June 2012).