Electrode coating with platinum-group metal catalyst and...

Details Electrode coating with platinum-group metal catalyst and... Electrode coating with platinum-group metal catalyst and...

C - Chemistry, Metallurgy

25

C

204/195.3

C25C 7/02 (2006.01) C25B 11/04 (2006.01)

Patent

CA 1175783

ELECTRODE COATING WITH PLATINUM-GROUP METAL CATALYST AND SEMI-CONDUCTING POLYMER ABSTRACT A catalytic electrode has an electrically conductive substrate such as titanium with a coating comprising a platinum-group metal catalyst finely dispersed in a matrix consisting of a semi-conducting polymer formed in situ on the substrate. The catalyst may be a platinum-group metal oxide such as iridium oxide formed in situ together with the semi-conducting polymer by the application of a uniform liquid mixture followed by a controlled heat treatment. The semi-conducting polymer is preferably formed from polyacrylonitrile, polybenzimidazo-pyrrolone or an adaman- tane based polybenzoxazole.

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