▎ 摘　　要

NOVELTY - Preparing ferric oxide/graphene complex material comprises e.g. preparing second-order graphite intercalation compound, carrying out oxidation and intercalation, obtaining material by alternately intercalating graphite with an oxygen-containing layer and ferric chloride, decomposing oxygen-containing group layer and ferric chloride to generate gas to obtain ferric chloride doped graphene nanoflake powder material, immersing the ferrous dichloride-doped graphene nanoflake powder material in hydrogen peroxide solution to further peel off the graphene sheet layer, and convert the divalent iron to trivalent, immersing the ferric trichloride-doped graphene nanoflake powder material in alkaline solution, stirring, drying to obtain iron hydroxide-doped graphene nanoflake powder material, processing iron hydroxide-doped graphene nanoflake powder material at high temperature to obtain ferric oxide/graphene composite material. USE - The method is useful for preparing ferric oxide/graphene complex material. ADVANTAGE - The method: has high stripping efficacy; reduces damage of graphene sheet structure, and is beneficial to ion and charge transport; ensures iron ions are uniformly distributed between the layers of graphene sheets; reduces accumulation of graphene sheets and agglomeration of iron oxide particles; is simple, and suitable for industrial or laboratory operation; requires low equipment. DETAILED DESCRIPTION - Preparing ferric oxide/graphene complex material comprises (1) mixing and heating anhydrous ferric chloride with graphite and preparing second-order graphite intercalation compound by molten salt method, carrying out oxidation and intercalation for second-order graphene intercalation compounds using oxidants and concentrated acids, and obtaining material by alternately intercalating graphite with an oxygen-containing layer and ferric chloride, (2) in protective atmosphere, using high-temperature treatment material, decomposing oxygen-containing group layer and ferric chloride to generate gas to obtain ferric chloride doped graphene nanoflake powder material, (3) immersing the ferrous dichloride-doped graphene nanoflake powder material in hydrogen peroxide solution to further peel off the graphene sheet layer, and convert the divalent iron to trivalent, and (4) immersing the ferric trichloride-doped graphene nanoflake powder material in alkaline solution, stirring, naturally drying after suction filtration to obtain iron hydroxide-doped graphene nanoflake powder material, under protective gas atmosphere, processing iron hydroxide-doped graphene nanoflake powder material at high temperature to obtain ferric oxide/graphene composite material.