▎ 摘　　要

NOVELTY - Preparation of graphene-doped carbon fiber comprises adopting polyacrylonitrile/graphene composite material prepared by aqueous phase precipitation polymerization as spinning raw material, and performing dry-jet wet spinning and pretreatment obtained by oxidation, carbonization and graphitization treatment. The preparation of spinning raw material comprises mixing acrylonitrile and doped graphene material uniformly in water, using ammonium persulfate or ammonium persulfate-ammonium sulfite composite initiation system to initiate polymerization reaction, filtering, washing and drying. USE - The method is used for preparing graphene-doped carbon fiber used as hydrogen storage material and/or preparing hydrogen storage material; as high capacity electrode material and/or preparing high capacity electrode material; and as high performance composite material and/or preparing high performance composite material (claimed).