Patent ID: 8137849

Claim:
A solid polymer electrolyte composition comprising: 0.1-95 wt % of a phosphate-based acrylate crosslinking agent of Formula 1; 0.1-98 wt % of one or more of a plasticizer selected from polyalkylene glycol dialkyl ether of Formula 2 and a polar aprotic solvent; 3-40 wt % of a lithium salt; and 0.1-5 wt % of an initiator: wherein R 1 and R 2 are respectively a hydrogen atom or a methyl group; and n is an integer of 1-20; wherein R 3 and R 4 are respectively a C 1 -C 10 a linear or branched alkyl group; R 5 , R 6 and R 7 are respectively a hydrogen atom or a methyl group; o, p and q are respectively an integer of 0-20 except when all of o, p and q are zero at the same time.