▎ 摘　　要

NOVELTY - Preparing sulfonated graphene modified perfluorosulfonic acid ion-exchange composite membrane, comprises infiltrating a base film into a sulfonated graphene perfluorosulfonic acid resin solution. The ion-composite membrane is made of an expanded polytetrafluoroethylene microporous film as a base film. USE - The method is useful for preparing sulfonated graphene modified perfluorosulfonic acid ion-exchange composite membrane (claimed). ADVANTAGE - The ion-exchange composite membrane has improved ion conductivity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for sulfonated graphene-modified perfluorosulfonic acid ion-exchange composite membrane produced by the above method.