▎ 摘　　要

NOVELTY - Preparation of graphene involves preparing electric catalytic electrode, immersing electrode into graphene oxide solution and drying and obtaining graphene oxide-modified electrode, then immersing the electrode into 10-500 mmol/L buffer solution having pH of 7, adjusting the electrode potential to -1.2V to -2V and reacting electrochemically for 1 second to 1 hour. USE - Preparation of graphene (claimed). ADVANTAGE - The method efficiently and economically provides graphene.