To provide an ion conductive binding agent for a fuel cell having high ion conductivity, excellent heat-resistance and water-resistance, an excellent bonding property with a proton acid group containing an aromatic polymer electrolyte sheet and an electrode material.
The ion conductive binding agent for a fuel cell contains crosslinking polyether ketone of a specific structure containing an aromatic ring having a proton acid group and a 1-20C alkyl group. The crosslinking polyether ketone contains a repeating structural unit containing a proton group represented by a general formula(1) and a repeating structural unit represented by a general formula(2). Assuming both the repeating units are 100 mol%, the crosslinking polyether ketone preferably contains 10-100 mol% of the repeating unit represented by the formula(1) and 0-90 mol% of the repeating unit represented by the formula (2).
COPYRIGHT: (C)2004,JPO
Junichi Ishikawa
Satoko Fujiyama
Shigeharu Fujii
Masashi Tamai
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