Pem fuel cell

H - Electricity – 01 – M

Patent

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Details

H01M 8/00 (2006.01) H01M 2/14 (2006.01) H01M 8/10 (2006.01) H01M 4/92 (2006.01)

Patent

CA 2217452

Proposed is a fuel cell with a proto-permeable membrane, on each side of which is disposed catalytic material and a collector, the fuel cell being characterized by the following features: the inwards-facing sides of the collectors (16, 18) are coated with a layer of electrically conducting, gas- permeable charcoal aerogel with a surface roughness of < 2 µm, applied over the aerogel on each side is a catalytic layer (15, 17) consisting of platinum or platinum alloy, between the catalytic layers (15, 17) is a membrane (14) deposited using plasma techniques and having a thickness between 3 and 50 µm.

La présente invention concerne une pile à combustible comportant une membrane perméable aux protons, sur les deux faces de laquelle sont disposés un matériau catalytique et un collecteur. La pile à combustible présente les caractéristiques suivantes: les faces intérieures des collecteurs (16, 18) sont revêtues d'une couche d'aérogel de carbone électroconducteur, perméable au gaz et d'une rugosité de surface < 2 µm, sur l'aérogel est appliquée, des deux côtés, une couche catalytique (15, 17) composée de platine ou d'un alliage de platine, entre les couches catalytiques (15, 17) se trouve une membrane (14), déposée par procédé plasma-chimique et d'une épaisseur comprise entre 3 et 50 µm.

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