Staas & Halsey LLP
Silane crosslinked structure-introduced fuel-cell polymer electrolyte membrane and fuel-cell electrode assembly having the same
An object is to provide an electrolyte membrane that maintains excellent cell characteristics for a long time under high temperature and low water retention, as this is the most important point in fuel cells.A process for producing a polymer electrolyte membrane for fuel cells is provided, which process comprises in sequence: forming graft molecular chains by graft-polymerization of a vinyl silane coupling agent on a polymer film substrate that has phenyl groups capable of holding sulfonic acid groups; introducing sulfonic acid groups into phenyl groups contained in the graft molecular chains; and hydrolyzing and condensing alkoxy groups contained in the graft molecular chains so that a silane crosslinked structure is introduced between the graft molecular chains. A polymer electrolyte membrane produced by the process is also provided.
Japan Atomic Energy Agency Nitto Denko Corporation
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C08F C08J C08J C08F C08J H01M Y02E H01M C08J H01B H01M C08F H01M Y02P C08F H01M H01M C08F H01M H01M
inventional additional inventional inventional additional inventional additional inventional inventional inventional inventional inventional inventional additional inventional inventional inventional inventional inventional additional
Soji Yasunari Masaharu Jinhua Yozo Toshimitsu Masaru
Nishiyama Maekawa Asano Chen Nagai Tachibana Yoshida