Fuel cell having metalized gas diffusion layer

H - Electricity – 01 – M

Patent

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Details

H01M 4/86 (2006.01) H01M 4/90 (2006.01) H01M 4/96 (2006.01) H01M 8/10 (2006.01)

Patent

CA 2471761

A fuel cell (10) is described and which includes an ion exchange membrane (12); an electrode (13, 14) positioned in ion exchanging relation relative to the ion exchange membrane; a gas diffusion layer (50) borne by the electrode and having an outwardly facing surface; a porous metal coating (60) comprising one or more elements selected from the periodic table of elements and which has an atomic number of less than 75, and which is positioned at least in partial covering relation relative to the outwardly facing surface of the gas diffusion layer; and a current collector (80) forcibly disposed in ohmic electrical contact with the porous metal coating.

L'invention concerne une pile à combustible (10) comportant une membrane d'échange ionique (12); une électrode (13 ou 14) placée dans une relation d'échange ionique par rapport à la membrane d'échange ionique; une couche de diffusion de gaz (50) portée par l'électrode et présentant une surface tournée vers l'extérieur; un revêtement métallique poreux (60) comprenant au moins un élément choisi dans le tableau périodique des éléments et ayant un nombre atomique inférieur à 75, et placé de façon à assurer une couverture au moins partielle par rapport à la surface tournée vers l'extérieur de la couche de diffusion de gaz; et un collecteur (80) disposé en force en contact électrique ohmique avec le revêtement métallique poreux.

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