Catalyst composition for cell, gas diffusion layer, and fuel...

H - Electricity – 01 – M

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H01M 8/02 (2006.01) B01J 21/18 (2006.01) B01J 23/42 (2006.01) H01M 4/96 (2006.01) H01M 8/10 (2006.01) H01M 4/92 (2006.01)

Patent

CA 2434086

A catalyst composition for a cell comprising catalyst-bearing conductive powder particles and fibrous carbon. A membrane-electrode assembly for a fuel cell comprising an electrolyte membrane and an electrode including a catalyst layer and a gas diffusion layer, the electrode being provided on each surface of the electrolyte membrane, wherein at least a portion of the surface of the gas diffusion layer which is in contact with the catalyst layer includes a layer containing a hydrophobic resin and fibrous carbon.

L'invention concerne une composition catalytique destinée à une pile, contenant des particules de poudre conductrices porteuses d'un catalyseur et du carbone fibreux. La présente invention concerne également un ensemble membrane-électrode pour une pile à combustible, constitué d'une membrane électrolytique et d'une électrode comprenant une couche catalytique et une couche de diffusion gazeuse, l'électrode étant placée sur chaque surface de la membrane électrolytique. Au moins une portion de la surface de la couche de diffusion gazeuse en contact avec la couche catalytique comprend une couche contenant un résine hydrophobe et du carbone fibreux.

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