▎ 摘　　要

NOVELTY - Graphene is prepared by dispersing 1-5 mg oxidized graphite alkene solid powder in 1 ml water, stirring, adding magnesium metal magnesium or metal aluminum as reducing agent, heating at 60-90 degrees C for 2-10 minutes for reduction reaction, taking out un-reacted metal magnesium or metal aluminum, subjecting to ultrasonic processing for 1-5 minutes to obtain graphene suspension, and freeze-drying. USE - Method of preparing graphene (claimed). ADVANTAGE - The method is simple and low cost, does not utilize toxic reducing agent, does not require dispersing agent, has good repeatability, and can be applied to industrial production.