Method of making membrane electrode assemblies

Details Method of making membrane electrode assemblies Method of making membrane electrode assemblies

H - Electricity

01

M

H01M 8/02 (2006.01) H01M 4/88 (2006.01) H01M 8/10 (2006.01)

Patent

CA 2640961

A method of making a membrane electrode assembly includes forming an unbonded membrane electrode assembly and forming a bonding assembly by contacting a first surface of at least one absorbent material against at least one surface of the unbonded membrane electrode assembly, the at least one absorbent material containing a liquid. The membrane electrode assembly includes an anode gas diffusion layer, a cathode gas diffusion layer, an anode catalyst, a cathode catalyst, and a polymer electrolyte membrane interposed between the anode catalyst and the cathode catalyst. The method further includes heating the bonding assembly to effect bonding of at least two components, at least a portion of the liquid being removed.

L'invention concerne un procédé de fabrication d'un ensemble membrane-électrode, ledit procédé impliquant de former un ensemble membrane-électrode non lié et de former un ensemble de liaison en mettant en contact une première surface d'au moins un matériau absorbant contre au moins une surface de l'ensemble membrane-électrode non lié, ledit matériau absorbant contenant un liquide. L'ensemble membrane-électrode inclut une couche de diffusion gazeuse anodique, une couche de diffusion gazeuse cathodique, un catalyseur anodique, un catalyseur cathodique et une membrane électrolytique polymère intercalée entre le catalyseur anodique et le catalyseur cathodique. Le procédé implique également de chauffer l'ensemble de liaison afin de lier de manière effective au moins deux composants, une partie au moins du liquide étant éliminée.

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