Patent ID: 7947406

Claim:
A polymer electrolyte having a repetitive structure represented by the following formula (1): wherein B represents an oxygen atom, a sulfur atom or a bivalent group selected from the group consisting of the following formulas (B 1 ), (B 2 ) and (B 3 ), A represents a bivalent aromatic group, Y represents —SO 2 —, —SO— or —CO—, R 1 in formula (1) and R 2 , R 3 , R 4 and R 5 in formulas (B 1 ), (B 2 ) and (B 3 ) each independently represents a halogen atom, an alkyl group of 20 or less carbon atoms, an aryl group of 30 or less carbon atoms, a cyano group, a carboxyl group, an alkoxycarbonyl group of 20 or less carbon atoms, an aryloxycarbonyl group of 30 or less carbon atoms, a carbamoyl group, an alkylcarbonyl group of 20 or less carbon atoms, an arylcarbonyl group of 30 or less carbon atoms, a nitro group, an amino group, an acylamino group of 20 or less carbon atoms, a sulfoneamide group, an imide group, an imino group, a hydroxyl group, an alkoxy group of 20 or less carbon atoms, an aryloxy group of 30 or less carbon atoms, an acyloxy group of 20 or less carbon atoms, an alkylsulfonyloxy group of 20 or less carbon atoms, an arylsulfonyloxy group of 30 or less carbon atoms, a sulfo group, a sulfamoyl group, an alkylthio group of 20 or less carbon atoms, an arylthio group of 30 or less carbon atoms, an alkylsulfonyl group of 20 or less carbon atoms, an arylsulfonyl group of 30 or less carbon atoms, or a heterocyclic group, n1 represents, 0, 1, 2 or 3, L represents a perfluoroalkylene group, and M represents an ionic group, wherein Z represents a single bond or a bivalent group, Q 1 , Q 2 , Q 3 , Q 4 , Q 5 , and Q 6 each represents independently a single bond, an oxygen atom or a sulfur atom, R 2 , R 3 , R 4 and R 5 are as defined above, m1, m2 and m3 each represents independently 0, 1, 2, 3 or 4, and s1 represents 0, 1, 2, 3, 4, 5 or 6.