Fuel cell electrode catalyst comprising binary platinum...

Details Fuel cell electrode catalyst comprising binary platinum... Fuel cell electrode catalyst comprising binary platinum...

H - Electricity

01

M

H01M 4/86 (2006.01) B01J 23/42 (2006.01) H01M 4/88 (2006.01) H01M 4/92 (2006.01)

Patent

CA 2645906

An object of the present invention is to provide a fuel cell electrode catalyst which offers an improved durability while inhibiting the degradation of an initial catalytic activity to exhibit a stably high catalytic activity over a long period. The present invention provides a fuell cell electrode catalyst having an alloy carried by carbon, the alloy consisting of platinum and a platinum-family metal other tha platinum, characterized in that a composition ratio of platinum to platinum-family metal other than platinum to carbon is 1:(0.03 to 1.5):(0.46 to 2.2) (wt ratio).

L'invention concerne un catalyseur d'électrode de pile à combustible de durabilité améliorée qui permet d'inhiber la dégradation d'une activité catalytique initiale, de manière à présenter une forte activité catalytique stable sur une longue période. L'invention concerne un catalyseur d'électrode de pile à combustible comportant un alliage sur support de carbone, cet alliage étant constitué de platine et d'un métal de la famille du platine autre que le platine, le catalyseur étant caractérisé par le rapport de la composition platine/métal de la famille du platine autre que le platine/carbone suivant: 1:(0,03 à 1,5):(0,46 à 2,2)(rapport en poids).

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