| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a new polymer electrolyte with high oxidation resistance, hardly generating desulfonation even at high temperature, with high proton conductivity, which can be easily manufactured, as one for a solid polymer fuel cell and a binder. <P>SOLUTION: The polymer electrolyte is composed of polymer sulfonic acid having a side chain of such a structure that aromatic rings are jointed by electron-attractive linking groups. The side chain may be a branched side chain or a non-branched side chain, but the branched side chain is preferable. The electron-attracting linking group is selected from -CO-, -CONH-, -C(CF<SB>2</SB>)p-, (p is an integer of 1 to 10), -C(CF<SB>3</SB>)<SB>2</SB>-, -COO-, -SO-, -SO<SB>2</SB>-. The primary chain has a sulfone group, but the side chain does not have a sulfonic group. <P>COPYRIGHT: (C)2007,JPO&INPIT |
