▎ 摘　　要

NOVELTY - Preparation of proton exchange membrane comprises mixing dicarboxydiphenyl ether, tetraaminobiphenyl, phosphorus pentoxide and methanesulfonic acid to obtain first mixed solution, adding modified graphene to N,N-dimethylformamide to obtain second mixed solution, adding second mixed solution to first mixed solution, heating to obtain modified graphene ether bond-containing polybenzimidazole polymer, forming modified graphene ether bond-containing polybenzimidazole film on modified graphene ether bond-containing polybenzimidazole polymer through solution casting process, soaking modified graphene ether bond-containing polybenzimidazole polymer in phosphoric acid solution and drying. USE - The method is for preparation of proton exchange membrane. ADVANTAGE - The membrane improves proton conductivity while maintaining mechanical properties.