Patent ID: 7347954

Claim:
A polymer electrolyte-forming composition characterized by comprising: (A) a quaternary arnmoniuin salt of general formula (1) below wherein R 1 to R 3 are each independently an alkyl group of 1 to 5 carbons or a substituent having a reactive unsaturated bond and any two from among R 1 to R 3 may together form a ring, R 4 is methyl, ethyl or a substituent having a reactive unsaturated bond, with the proviso that at least one of R 1 to R 4 is a substituent having a reactive unsaturated bond, X is a monovalent anion, the letter m is an integer from 1 to 8, and the letter n is an integer from 1 to 4; and (B) an ionic liquid that is a quaternary ammonium salt of general formula (2) below wherein R 5 to R 8 are each independently an alkyl of 1 to 5 carbons or an alkoxyalkyl group of the formula R′—O—(CH 2 ) n — (R′ being methyl or ethyl, and the letter n being an integer from 1 to 4) and any two from among R 5 , R 6 , R 7 and R 8 may together form a ring, with the proviso that at least one of R 5 to R 8 is an alkoxyalkyl group of the above formula, and X is a monovalent anion.