Patent ID: 7662498

Claim:
A polymer electrolyte composition comprising (A) a polymer compound having an ion exchange group, (B) a polyphenylene sulfide resin, and (C) a polyphenylene ether resin, wherein the polymer compound having an ion exchange group (A) has a structural unit represented by the following formula (1): —[CF 2 CX 1 X 2 ] a —[CF 2 —CF(—O—(CF 2 X 3 )) b —O c —(CFR 1 ) d —(CFR 2 ) e —(CF 2 ) f —X 4 )] g — (1) wherein X 1 , X 2 and X 3 each is independently a halogen atom or a perfluoroalkyl group having from 1 to 3 carbon atoms, a and g are 0≦a<1, 0<g≦1 and a+g=1, b is an integer of 0 to 8, c is 0 or 1, d, e and f each is independently an integer of 0 to 6 (with the proviso that d+e+f is not 0), R 1 and R 2 each is independently a halogen element or a perfluoroalkyl or fluorochloroalkyl group having from 1 to 10 carbon atoms, and X 4 is COOZ, SO 3 Z, PO 3 Z 2 or PO 3 HZ, wherein Z is a hydrogen atom, an alkali metal atom, an alkaline earth metal atom, NH 4 , NH 3 R 1 , NH 2 R 1 R 2 , NHR 1 R 2 R 3 , or NR 1 R 2 R 3 R 4 , wherein R 1 , R 2 , R 3 and R 4 each is an alkyl group or an arene group.