▎ 摘　　要

NOVELTY - A gel type polymer electrolyte membrane preparing method involves dispersing graphene oxide in N,N-dimethylformamide to obtain dispersed graphene oxide. The dispersed graphene oxide is added into copolymer of polyvinylidene fluoride and hexafluoropropylene to form a sol. The sol is immersed in electrolyte solution to obtain finished product. USE - Method for preparing gel type polymer electrolyte membrane that is utilized in a lithium ion battery. ADVANTAGE - The method enables preparing the gel type polymer electrolyte membrane with high thermal stability and ion conductivity, in a simple manner.