▎ 摘　　要

NOVELTY - Sulfonated graphene modified perfluorosulfonic acid ion exchange membrane prepared by mixing sulfonated graphene and perfluorosulfonic acid resin solution by casting method, is claimed. USE - Used as sulfonated graphene modified perfluorosulfonic acid ion exchange membrane. ADVANTAGE - The membrane has high proton conductivity, and high mechanical strength. The method: provides a method with scientific and reasonable design, which is simple and easy to implement. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing sulfonated graphene modified perfluorosulfonic acid ion exchange membrane comprising (1) mixing the sulfonated graphene with the perfluorosulfonic acid resin solution, adding dimethylformamide, heating to remove water, and finally removing air bubbles, and (2) xasting the perfluorosulfonic acid resin solution containing sulfonated graphene obtained in step (1) into a film by solution casting method, drying to obtain the sulfonated graphene modified perfluorosulfonic acid ion exchange membrane.