Catalyst-coated membrane with integrated sealing material...

Details Catalyst-coated membrane with integrated sealing material... Catalyst-coated membrane with integrated sealing material...

H - Electricity

01

M

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

Patent

CA 2539602

The invention relates to a catalyst-coated ion-conducting membrane and a membrane-electrode assembly (MEA) for electrochemical devices, in particular for fuel cells. The catalyst-coated, ion-conducting membrane is provided with a sealing material which is applied in the edge region to one side of the membrane and has a thickness which corresponds to at least the total thickness of the catalyst-coated membrane. Owing to their simple, material-conserving construction, the catalyst-coated ion-conducting membranes and the membrane- electrode assemblies produced therefrom can be manufactured inexpensively. They are used in PEM fuel cells, direct methanol fuel cells (DMFCs), electrolyzers and other electrochemical devices.

L'invention concerne une membrane conductrice d'ions revêtue de catalyseur et un ensemble membrane/électrode (MEA) destiné à des dispositifs électrochimiques, en particulier, des piles à combustible. La membrane conductrice d'ions revêtue de catalyseur est pourvue d'un matériau d'étanchéité appliqué dans la région de bord sur un côté de la membrane, et présente une épaisseur correspondant à au moins l'épaisseur totale de la membrane revêtue de catalyseur. Du fait de leur construction simple de conservation de matériau, les membranes conductrices d'ions revêtues de catalyseur et les ensembles membrane/électrode produits peuvent être fabriqués à bon marché. Ils sont utilisés dans les piles à combustible PEM, les piles à combustible à méthanol direct (DMFC), les électrolyseurs et d'autres dispositifs électrochimiques.

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