Porous electrode with porous catalytic layer containing...

Details Porous electrode with porous catalytic layer containing... Porous electrode with porous catalytic layer containing...

H - Electricity

01

M

204/192, 319/22

H01M 4/96 (2006.01) H01M 4/92 (2006.01) H01M 4/00 (2006.01) H01M 4/86 (2006.01)

Patent

CA 1119659

A B S T R A C T The invention relates to a porous electrode comprising at least a porous catalytic layer containing a catalytically active noble-metal, carbon and a polymeric binder and a porous metallic collector is situated on the electrolyte-side of this layer. According to the invention the catalytic layer has a thickness of less than 80 µm and are the noble-metal particles in the layer situated on the surface and/or in the pores of part of the carbon particles, while the rest of the carbon particles contains no noble- metal particles. The invention meets the need of an electrode of the type described with a much lower noble-metal content, while the excellent characteristics as regards efficiency, power density and simplicity of manufacture are retained.

318718

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