Patent ID: 7279540

Claim:
A precursor composition for an ion-polymer gel electrolyte comprising: (A) a polymerizable ion pair compound, (B) a cross-linker having two or more unsaturated groups co-polymerizable with the polymerizable ion pair compound (A), and (C) non-polymerizable ion pair compound, wherein the polymerizable ion pair compound (A) is a monomer represented by following general formula I, wherein each of R1, R2, R3, R4, R5 and R6 independently represents hydrogen atom, alkyl or aryl group having 1-12 carbon atoms; and each of R7 and R8 independently represents alkyl or aryl group having 1-12 carbon atoms; X designates one selected from the group consisting of: halogen atom, AlCl 4 − , PF 6 − , BF 4 − , bis(oxalato) borate anion, R f1 SO 3 − , (NC) 2 N −, (R f2 Y) 2 N − , (R f2 Y) 3 C − and (R f2 Y) 2 C − Q, where R f1 designates perfluoro alkyl or aryl group having 1-8 carbon atoms, R f2 designates independently fluorine atom, perfluoro alkyl or aryl group having 1-8 carbon atoms, Y designates —SO 2 — or —PO—R f2 ; and Q designates —H or —CO—R f2 .