Fuel cell including a hydrogen permeable membrane as anode...

H - Electricity – 01 – M

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H01M 8/24 (2006.01)

Patent

CA 2633347

A fuel cell includes a hydrogen permeable membrane, an electrolyte layer, a cathode and a hydrogen non-permeable layer. The electrolyte layer is formed on the hydrogen permeable membrane and has proton conductivity. The cathode is provided on the electrolyte layer. The hydrogen non-permeable layer covers a sidewall of the hydrogen permeable membrane. A manufacturing method of a fuel cell includes forming an electrolyte layer having proton conductivity on a hydrogen permeable membrane, forming a hydrogen non-permeable membrane on a sidewall of the hydrogen permeable membrane with an electrolytic plating treatment after forming the electrolyte layer, and forming a cathode on the electrolyte layer.

L'invention concerne une pile à combustible comportant une membrane perméable à l'hydrogène, une couche d'électrolyte, une cathode et une couche non perméable à l'hydrogène. La couche d'électrolyte est formée sur la membrane perméable à l'hydrogène et possède une conductivité protonique. La cathode est formée sur la couche d'électrolyte. La couche non perméable à l'hydrogène recouvre une face latérale de la membrane perméable à l'hydrogène. Un procédé de fabrication d'une pile à combustible selon l'invention consiste à former une couche d'électrolyte à conductivité protonique sur une membrane perméable à l'hydrogène, à former une membrane non perméable à l'hydrogène sur une face latérale de la membrane perméable à l'hydrogène par électrodéposition une fois la couche d'électrolyte formée puis à former une cathode sur cette couche d'électrolyte.

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