Carbon monoxide tolerant electrocatalyst with low platinum loading and a process for its preparation

Title: Carbon monoxide tolerant electrocatalyst with low platinum loading and a process for its preparation

Full Record
Other Related Research

Abstract

An electrocatalyst is provided for use in a fuel cell that has low platinum loading and a high tolerance to carbon monoxide poisoning. The fuel cell anode includes an electrocatalyst that has a conductive support material, ruthenium nanoparticles reduced in H.sub.2 and a Group VIII noble metal in an amount of between about 0.1 and 25 wt % of the ruthenium nanoparticles, preferably between about 0.5 and 15 wt %. The preferred Group VIII noble metal is platinum. In one embodiment, the anode can also have a perfluorinated polymer membrane on its surface.

Inventors:: Adzic, Radoslav; Brankovic, Stanko; Wang, Jia

Publication Date:: 2003-12-30

Research Org.:: Brookhaven National Lab. (BNL), Upton, NY (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1174655

Patent Number(s):: 6,670,301

Application Number:: 09/812,246

Assignee:: Brookhaven Science Associates LLC (Upton, NY)

DOE Contract Number:: AC02-98CH10886

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: 30 DIRECT ENERGY CONVERSION

Citation Formats


                    Adzic, Radoslav, Brankovic, Stanko, and Wang, Jia. Carbon monoxide tolerant electrocatalyst with low platinum loading and a process for its preparation.  United States: N. p., 2003. 
        Web.

Copy to clipboard


                    Adzic, Radoslav, Brankovic, Stanko, & Wang, Jia. Carbon monoxide tolerant electrocatalyst with low platinum loading and a process for its preparation.  United States.

Copy to clipboard


                    Adzic, Radoslav, Brankovic, Stanko, and Wang, Jia. Tue .  
        "Carbon monoxide tolerant electrocatalyst with low platinum loading and a process for its preparation".  United States.  https://www.osti.gov/servlets/purl/1174655.

Copy to clipboard


                    
@article{osti_1174655,

  title        = {Carbon monoxide tolerant electrocatalyst with low platinum loading and a process for its preparation},

  author       = {Adzic, Radoslav and Brankovic, Stanko and Wang, Jia},

  abstractNote = {An electrocatalyst is provided for use in a fuel cell that has low platinum loading and a high tolerance to carbon monoxide poisoning. The fuel cell anode includes an electrocatalyst that has a conductive support material, ruthenium nanoparticles reduced in H.sub.2 and a Group VIII noble metal in an amount of between about 0.1 and 25 wt % of the ruthenium nanoparticles, preferably between about 0.5 and 15 wt %. The preferred Group VIII noble metal is platinum. In one embodiment, the anode can also have a perfluorinated polymer membrane on its surface.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/1174655},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2003},

  month        = {12}

}

Copy to clipboard

Patent:

View Patent

Save / Share:

Export Metadata

Save to My Library

Similar records in OSTI.GOV collections:

Electrocatalyst for alcohol oxidation at fuel cell anodes

Patent Adzic, Radoslav ; Kowal, Andrzej

In some embodiments a ternary electrocatalyst is provided. The electrocatalyst can be used in an anode for oxidizing alcohol in a fuel cell. In some embodiments, the ternary electrocatalyst may include a noble metal particle having a surface decorated with clusters of SnO.sub.2 and Rh. The noble metal particles may include platinum, palladium, ruthenium, iridium, gold, and combinations thereof. In some embodiments, the ternary electrocatalyst includes SnO.sub.2 particles having a surface decorated with clusters of a noble metal and Rh. Some ternary electrocatalysts include noble metal particles with clusters of SnO.sub.2 and Rh at their surfaces. In some embodiments themore »« less
Full Text Available
Preparation and evaluation of advanced electrocatalysts for phosphoric acid fuel cells. Final report

Technical Report Stonehart, P ; Baris, J ; Hochmuth, J ; ...

This research program details the preparation and characterization of platinum electrocatalysts supported on carbon substrates. In the first instance, the platinum electrocatalysts were characterized for their crystallite sizes and the degree of dispersion on the carbon supports. One application of these electrocatalysts was for anodic oxidation of hydrogen in hot phosphoric acid fuel cells, coupled with the influence of low concentrations of carbon monoxide in the fuel gas stream. In a similar way, these platinum on carbon electrocatalysts were evaluated for oxygen reduction in hot phosphoric acid. An extension of these catalyst preparation techniques involved the preparation of binary noblemore »« less
Preparation and evaluation of advanced electrocatalysts for phosphoric acid fuel cells. 7th quarterly report, July-September 1981

Technical Report Stonehart, P ; Baris, J ; Hochmuth, J ; ...

A number of new electrocatalyst combinations were prepared and characterized. These electrocatalysts were formulated to contain platinum combined with transition metal carbide forming elements (W, Mo, V) for cathodes and platinum combined with palladium for anodes. The metals were supported on Consel I and Consel IV which were developed in our parallel EPRI 1200-2 program. High resolution electron microscopy was used to determine the crystallite size and dispersion of platinum-palladium alloy electrocatalysts in order to provide analytical support for the electrochemical determinations of the particle dispersions. An equation has been derived which correlates palladium crystallite size with electrochemical hydrogen adsorption.more »« less
Synthesis and Characterization of CO- and H2S-Tolerant Electrocatalysts for PEM Fuel Cell

Technical Report Ilias, Shamsuddin

The present state-of-art Proton Exchange Membrane Fuel Cell (PEMFC) technology is based on platinum (Pt) as a catalyst for both the fuel (anode) and air (cathode) electrodes. This catalyst is highly active but susceptible to poisoning by CO, which may be present in the H{sub 2}-fuel used or may be introduced during the fuel processing. Presence of trace amount of CO and H{sub 2}S in the H{sub 2}-fuel poisons the anode irreversibly and decreases the performance of the PEMFCs. In an effort to reduce the Pt-loading and improve the PEMFC performance, we propose to synthesize a number of Pt-based binary,more »« less
https://doi.org/10.2172/898315

Full Text Available
DEVELOPMENT OF NOVEL ELECTROCATALYSTS FOR PROTON EXCHANGE MEMBRANE FUEL CELLS

Technical Report Ilias, Shamsuddin

Proton Exchange Membrane Fuel Cell (PEMFC) is one of the most promising power sources for space and electric vehicle applications. Platinum (Pt) catalyst is used for both fuel and air electrodes in PEMFCs. The carbon monoxide (CO) contamination of H{sub 2} greatly affects electrocatalysts used at the anode of PEMFCs and decrease the cell performance. This irreversible poisoning of the anode can happen even in CO concentrations as low as few ppm, and therefore, require expensive scrubbing of the H{sub 2}-fuel to reduce the contaminant concentration to acceptable level. In order to commercialize this environmentally sound source of energy/power system,more »« less
https://doi.org/10.2172/825377

Full Text Available

Similar Records