Reinforced polymer electrolyte membrane

Details Reinforced polymer electrolyte membrane Reinforced polymer electrolyte membrane

C - Chemistry, Metallurgy

08

J

C08J 5/22 (2006.01) C08J 5/04 (2006.01) H01M 8/10 (2006.01)

Patent

CA 2545169

A method is provided for making a reinforced polymer electrolyte membrane, such as may be used in electrolytic cells such as fuel cells, by mixing a sulfonate- or sulfonyl halide-functional polymer with a bisamidine compound and subsequently trimerizing the amidine groups of the bisamidine compound to form triazine linkages. The sulfonyl halide or sulfonate groups may then be converted to sulfonic acid groups, yielding a polymer electrolyte reinforced with a polytriazine.

L'invention concerne un procédé pour fabriquer une membrane à électrolyte polymère renforcée, telle que celle utilisée dans des cellules électrolytiques telles que des piles à combustible, comprenant le mélange d'un polymère fonctionnel de sulfonate ou de sulfonyle-halogénure avec un composé de bisamidine ; et la trimérisation des groupes amidine du composé de bisamidine, ceci permettant la formation des liaisons de triazine. Les groupes sulfonyle halogénure ou sulfonate peuvent être ensuite convertis en groupes d'acide sulfonique, ce qui permet de renforcer un électrolyte polymère avec une polytriazine.

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