▎ 摘　　要

NOVELTY - Preparing graphene comprises adding aluminum and alkaline material in the 0.5-75 mg/ml graphene oxide dispersion liquid to obtain alkali solution, where the mass ratio of the aluminum powder, alkaline substance, and graphene oxide is 1-1.2:4.5-5:0.5; raising to 25-80 degrees C, reacting for 5-100 minutes under the ultrasonic action; after ending the reaction, adding in the acidic solution and alkaline substance, washing with deionized water, drying to obtain the graphene, where the mass ratio of aluminum powder, alkaline substance, and graphene oxide is 0.8-1.5:4-6:0.5. USE - Method for preparing graphene (claimed) used in heat conducting composite material. ADVANTAGE - The method can prepare graphene with high quality. DESCRIPTION OF DRAWING(S) - The drawing is a schematic diagram of the method for preparing graphene (Drawing includes non-English language text).