▎ 摘　　要

NOVELTY - Preparation of graphene composite material involves exfoliating graphite oxide, obtaining graphene oxide solution, mixing graphene oxide solution and to-be-mixed composite material, obtaining mixed material, freeze-drying, obtaining block-shaped graphene oxide composite material, exposing resultant product to laser or sunlight, and reducing block-shaped graphene oxide composite material to block-shaped graphene composite material. The composite material includes substances (a)-(d). The substance (c) is red phosphorus, melamine or sulfur. The substance (d) is pyrrole. USE - Preparation of graphene composite material (claimed). ADVANTAGE - The method enables economical, environmentally-friendly and simple preparation of porous graphene composite material having three-dimensional internal structure and high surface area, with high productivity. DETAILED DESCRIPTION - Preparation of graphene composite material involves exfoliating graphite oxide, obtaining graphene oxide solution, mixing graphene oxide solution and to-be-mixed composite material, obtaining mixed material, freeze-drying, obtaining block-shaped graphene oxide composite material, exposing resultant product to laser or sunlight, and reducing block-shaped graphene oxide composite material to block-shaped graphene composite material. The composite material includes substances (a)-(d). The substance (a) is chloroplatinic acid solution, chloroauric acid solution or silver nitrate solution. The substance (b) is nickel acetate solution, ferric oxalate solution, manganese acetate solution, cobalt acetate solution, chromium acetate solution or lead acetate solution. The substance (c) is red phosphorus, melamine or sulfur. The substance (d) is pyrrole.