Porous electrode for electrode assemblies in a fuel cell

Details Porous electrode for electrode assemblies in a fuel cell Porous electrode for electrode assemblies in a fuel cell

1995-04-26

1996-03-26

Maples, John S.

Chemistry: electrical current producing apparatus, product, and

Having earth feature

429 44, H01M 492, H01M 486

Patent

active

055019153

ABSTRACT:
A porous electrode suitable for use in a membrane electrode assembly for solid polymer fuel cells comprises a highly dispersed precious metal catalyst on particulate carbon impregnated with proton conducting polymer, and, a further component comprising hydrophobic polymer and a dispersion of particulate carbon, the loading of precious metal being 0.011-1.0 mg/cm.sup.2 of geometric electrode area. Said electrode demonstrates high effective platinum surface area and power density output when fabricated into a membrane electrode assembly.

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patent: 4877694 (1989-10-01), Solomon et al.
patent: 5084144 (1992-01-01), Reddy et al.
M. S. Wilson and S. Gottesfield, "High Performance Catalyzed Membranes of Ultra-low Pt Loadings for Polymer Electrolyte Fuel Cells," J. Electrochem. Soc., vol. 139, No. 2, Feb. 1992, pp. L28-L30.
E. J. Taylor, E. B. Anderson and N. R. K. Vilambi, "Preparation of High-Platinum-Utilization Gas Diffusion Electrodes for Proton-Exchange-Membrane Fuel Cells," J. Electrochem. Soc., vol. 139, No. 5, May 1992, pp. L45-L46.
6001 Chemical Abstracts 115 (1991) Dec. 2, No. 22, Columbus, Ohio, US (one page) (no month).
Shukla, et al. "A Nafion-bound platinized carbon electrode for oxygen reduction in solid polymer electrolyte cells," Journal of Applied Electrochemistry, 19 (1989) 383-386 (no month).

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