Multi-layer polyelectrolyte membrane

H - Electricity – 01 – M

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Details

H01M 8/10 (2006.01) H01M 10/40 (2006.01)

Patent

CA 2573466

Multi-layer polyelectrolyte membranes are described wherein at least one of the layers contains at least one acrylic resin or vinyl resin having at least one ionic or ionizable group, and at least one additional polymer. The polymer has small or large domain sizes with respect to he acrylic resin or vinyl resin that is present in one or more layers. The polymer preferably has improved conductivity when formed formed into a film. The membranes are useful in batteries, fuel cells, and the like.

L'invention concerne des membranes polyélectrolytes multicouches, au moins une des couches contenant au moins une résine acrylique ou une résine vinylique contenant au moins un groupe ionique ou ionisable, et au moins un polymère supplémentaire. Ce polymère présente des tailles de domaine petites ou grandes par rapport à la résine acrylique ou à la résine vinylique contenue dans au moins une couche. Ce polymère présente de préférence une conductivité améliorée lorsqu'il est transformé en film. Les membranes selon l'invention peuvent être utilisées dans des batteries, des piles à combustible et analogues.

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