Electrode catalyst layer, membrane electrode assembly and...

Details Electrode catalyst layer, membrane electrode assembly and... Electrode catalyst layer, membrane electrode assembly and...

H - Electricity

01

M

H01M 4/90 (2006.01) B01J 21/06 (2006.01) B01J 23/20 (2006.01) H01M 8/10 (2006.01)

Patent

CA 2721137

Disclosed is an electrode catalyst layer using an electrode catalyst having high oxygen reducing ability which is useful as an alternative material for a platinum catalyst. Also disclosed is use of such an electrode catalyst layer. Specifically disclosed is an electrode catalyst layer characterized by containing an electrode catalyst composed of a metal oxide which is obtained by thermally decomposing a metal organic compound. The metal element constituting the electrode catalyst is preferably one metal element selected from the group consisting of niobium, titanium, tantalum and zirconium.

L'invention concerne une couche catalytique d'électrode comportant un catalyseur d'électrode qui présente un pouvoir élevé de réduire l'oxygène et qui est utile en tant que matériau de substitution à la place d'un catalyseur en platine. L'invention porte également sur l'utilisation d'une couche catalytique d'électrode de ce type. L'invention est caractérisée en ce que la couche catalytique d'électrode comporte un catalyseur d'électrode composé d'un oxyde métallique obtenu par décomposition thermique d'un composé organométallique. L'élément métallique entrant dans la composition du catalyseur d'électrode est de préférence un élément métallique sélectionné dans le groupe comprenant le niobium, le titane, le tantale et le zirconium.

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