▎ 摘　　要

NOVELTY - A functionalized graphene oxide-doped polybenzimidazole film comprises base material, 1-25 mass% functionalized graphene oxide and phosphoric acid, where the phosphoric acid doping amount per repeating unit is 1-5. USE - Functionalized graphene oxide-doped polybenzimidazole film for use in high temperature fuel cell, sensor and other fields. ADVANTAGE - The film has high proton conductivity, improved mechanical property and improved alcohol resistance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing functionalized graphene oxide-doped polybenzimidazole film.