▎ 摘　　要

NOVELTY - A graphene is prepared by providing graphite electrodes and electrolyte solution; inserting graphite electrodes into electrolyte solution to electrify and electrolyzing the graphite electrodes; collecting electrolysis product on surface of electrified graphite electrode, and mixing electrolysis product with electrolyte solution, centrifuging to remove aggregated graphite sediment and collecting a suspension; filtering, cleaning and drying suspension to obtain solid containing the graphene; and roasting solid in an anaerobic environment to obtain the graphene. USE - Method for the preparation of graphene (claimed). ADVANTAGE - The method is cost effective, and environment friendly, provides low requirement to equipment, and simple production process and good operability. The production rate of graphene is increased, and provides graphene product having high purity.