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To improve the ionic conductivity at room temperature as well as enhancing the mechanical properties of the gel polymer electrolyte for lithium ion batteries,poly(vinylidene fluoride-hexafluoroprolene)(P(VDF-HFP))-based composite polymer electrolyte(CPE)membranes doped with organic-inorganic hybrid material PMMA-ZrO2 were prepared by phase inversion method,in which PMMA was successfully grafted onto nano-ZrO2 particles via in situ polymerization confirmed by FT-IR and SEM.XRD patterns show that adding hybrid particles PMMA-ZrO2 into the polymer matrix can significantly decrease the crystallinity of the CPE membrane.