NOVELTY - An ionic blended gel polymer electrolytic film comprises (wt.%) methyl methacrylate copolymerized lithium maleate 15-30%, polyethylene oxide (mol. wt. of 1x 105) (15-30), and 1 M hexafluorophosphoric acid lithium carbonic ester electrolyte (35-55). The mol. ratio of methyl methacrylate to maleic anhydride in synthetic methyl methacrylate copolymerized lithium maleate is 5:1-20:1. The hexafluorophosphoric acid lithium carbonic ester electrolyte is mixed solution comprising hexafluorophosphoric acid lithium doped dimethyl carbonate, diethyl carbonate and ethylene carbonate.    USE - Ionic blended gel polymer electrolytic film for polymer lithium-ion battery (claimed).    ADVANTAGE - The film has ion conductivity of less than or equal to 4.17x 10-3 S/cm at 30 degrees C and electrochemical window of less than or equal to 4.6 V.    DETAILED DESCRIPTION - Ionic blended gel polymer electrolytic film comprises (wt.%) methyl methacrylate copolymerized lithium maleate( 15-30), polyethylene oxide (mol. wt. of 1x 105) (15-30), and 1 M hexafluorophosphoric acid lithium carbonic ester electrolyte (35-55). The mol. ratio of methyl methacrylate to maleic anhydride in synthetic methyl methacrylate copolymerized lithium maleate is 5:1-20:1. The hexafluorophosphoric acid lithium carbonic ester electrolyte is mixed solution comprising hexafluorophosphoric acid lithium doped dimethyl carbonate, diethyl carbonate and ethylene carbonate at mass ratio of 1:1:1. An INDEPENDENT CLAIM is included for preparation of the film which comprises (A) preparing methyl methacrylate copolymerized methyl methacrylate; (B) preparing methyl methacrylate copolymerized lithium maleate; and (C) preparing film. The step (A) includes mixing methyl methacrylate with maleic anhydride at mol ratio of 5:1-20:1; adding initiator azobisisobutyronitrile (3-5%); heating to 75-85 degrees C and reacting for 3-5 hours; dissolving obtained product into acetone and depositing with methanol; and heating to 50 degrees C by vacuum oven and drying for 12 hours to obtain methyl methacrylate copolymerized methyl methacrylate. The step (B) includes dissolving obtained polymer (1g/mL) into solvent mixed by tetrahydrofuran and methanol at vol. ratio of 9:1; adding lithium hydroxide into dissolved polymer for neutralization until pH value of system is 7; heating solution at 50 degrees C and mixing for 2 hours; evaporating solvent, and drying in vacuum oven at 80 degrees C for 24 hours to obtain methyl methacrylate copolymerized lithium maleate. The step (C) includes mixing and dissolving prepared methyl methacrylate copolymerized lithium maleate with polyethylene oxide into tetrahydrofuran; mixing hexafluorophosphoric acid lithium carbonic ester electrolyte into solvent for 1 hour; evaporating mixed solution in glove box to form solvent and drying; and drying at vacuum oven for 80 degrees C for 24 hours and obtain ionic blended gel polymer electrolytic film.