▎ 摘　　要

NOVELTY - The preparation method of graphene oxide hydrogel, involves (A) freezing the graphene oxide solution, (B) placing the frozen graphene oxide in electrolyte solution and melting to obtain graphene oxide hydrogel. The electrolyte is soluble nitrate, sulfate, phosphate, carbonate, acetate, chloride, bromide, hydroxide or inorganic acid. USE - Preparation of graphene oxide hydrogel. ADVANTAGE - The method enables synthesis of graphene oxide hydrogel by simple, economical and easy process.