Protein-conducting electrolyte membrane for high temperature...

C - Chemistry – Metallurgy – 08 – J

Patent

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C08J 5/22 (2006.01) C08K 5/5317 (2006.01) H01M 4/88 (2006.01) H01M 8/10 (2006.01) H01M 4/86 (2006.01) H01M 4/92 (2006.01)

Patent

CA 2477864

The invention relates to a proton-conducting electrolyte membrane obtained by means of a method comprising the following steps A) swelling a polymer film with a liquid containing a phosphonic acid containing vinyl and B) polymerisation of the phosphonic acid containing vinyl present in the liquid introduced in step A). The inventive membrane can be applied in a varied manner on account of the excellent chemical and thermal properties thereof and is particularly suitable for use as a polymer-electrolyte-membrane (PEM) in the PEM-fuel cells.

Membrane électrolytique conductrice de protons qui peut être obtenue par un procédé consistant (A) à faire gonfler une feuille polymère à l'aide d'un liquide contenant de l'acide phosphonique renfermant du vinyle et (B) à polymériser l'acide phosphonique renfermant du vinyle présent dans le liquide utilisé à l'étape (A). En raison de ses excellentes propriétés chimiques et thermiques, la membrane selon la présente invention peut être utilisée dans de nombreuses applications et convient particulièrement en tant que membrane polymère (PEM) dans les piles à combustibles PEM.

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