Proton conducting electrolyte membrane for use in high...

Details Proton conducting electrolyte membrane for use in high... Proton conducting electrolyte membrane for use in high...

2003-03-04

2010-12-07

Pezzuto, Helen L. (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Ion-exchange polymer or process of preparing

C521S027000

Reexamination Certificate

active

07846983

ABSTRACT:
The present invention concerns a proton-conducting electrolyte membrane obtainable by a method comprising the following steps:A) expanding a polymer film with a liquid that contains a vinyl-containing phosphonic acid, andB) polymerisation of the vinyl-containing phosphonic acid present in the liquid introduced in step A).An inventive membrane, thanks to its exceptional chemical and thermal properties, is very versatile in its use and is particularly suitable as a polymer-electrolyte-membrane (PEM) in so-called PEM fuel cells.

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