Poly (methyl acrylate-co-acrylonitrile-co-lithium methacrylate) (hereinafter abbreviated to PMAML) was synthesized,and gel polymer electrolytes(GPE) comprising PMAML and PVDF blend as polymer matrix,ethylene carbonate(EC) and dimethyl carbonate(DMC) as plasticizer and LiBF4 as salt were prepared.Polymer membranes of PMAML and PVDF-HFP blend were prepared by pouring the paste onto glass plate with a doctor blade,and then immerging the polymer electrolyte membranes in the liquid electrolyte solution to obtain...