Patent ID: 7135254

Claim:
A multi-layered, UV-cured polymer electrolyte, comprising: A) a separator film layer formed of a polymer electrolyte, PP, PE, PVdF or a non-woven fabric; B) a UV-cured polymer electrolyte layer comprising: a) a polymer obtained by curing (ethyleneglycol)dimethacrylate oligomer of formula (I) with an irradiation of UV rays, CH 2 ═CR 1 COO(CH 2 CH 2 O) N COCR 2 ═CH 2 (I) wherein, R 1 and R 2 are independently hydrogen or methyl group, and n is an integer of 3–20, and b) at least one polymer selected from the group consisting of PVdF group polymers, PAN group polymers, PVC group polymers and combinations thereof or at least two polymers selected from the group consisting of PVdF group polymers, PAN group polymers, PMMA group polymers PVC group polymers and combinations thereof; and C) an organic electrolyte solution in which a lithium salt is dissolved in an organic solvent.