▎ 摘　　要

NOVELTY - Preparing graphene powder comprises (a) adding graphite intercalation agent and then uniformly stirring to obtain a graphite intercalation compound, (b) placing the graphite intercalation compounds in a high pressure stripping reactor and then mixing with expanding agent and stirring to obtain graphene-containing group, (c) carrying out reduction treatment of the graphene-containing group and then washing and drying. USE - The method is useful for preparing graphene powder (claimed), which is useful for super-capacitor, sensor and desalting sea water. ADVANTAGE - The method is capable of simply preparing graphene powder with high quality, reduced defect and good conductivity in an eco-friendly manner.