▎ 摘　　要

NOVELTY - Preparing graphene oxide by electrochemical method comprises taking graphite rod as anode and inert electrode as cathode, inserting one end of the anode and the cathode into the electrolyte, connecting the other end of the anode and the cathode to constant voltage power supply, electrifying to electrolyze, and generating graphene oxide. USE - Electrochemical preparation of graphene oxide. ADVANTAGE - The method avoids strong acid, strong oxidant and strong reducing agent, enhances dispersibility in water, is simple and convenient, has small modified graphene surface defect, is suitable for large-scale continuous automatic production, and has simple technique.