▎ 摘　　要

NOVELTY - In situ growth of graphene on a graphite fiber preparation involves mixing hydrofluoric acid and concentrated sulfuric acid. The obtained mixture is added with mixed solvent. The obtained mixture is stirred. The obtained mixture is reacted in a hydro-thermal reaction kettle. The obtained mixture is washed with deionized water. The obtained washed product is dried. USE - Method for in situ growth of graphene on a graphite fiber (claimed) used for super-capacitor. ADVANTAGE - The method enables in situ growth of graphene on a graphite fiber that has good dispersibility.