▎ 摘　　要

NOVELTY - Manufacture of graphene oxide involves connecting carbon-based three-dimensional material electrode and another carbon-based three-dimensional material or an inert material as the other electrode, to the two electrodes of a direct-current power source, contacting one end face of carbon-based three-dimensional material electrode(s) as a working face in parallel with the liquid level of an electrolyte solution, performing electrolysis, electrochemically-oxidizing, expanding, dissociating and cutting the graphite sheet layers on the end face into graphene oxide. USE - Manufacture of graphene oxide (claimed). ADVANTAGE - The method is environmentally-friendly, and enables efficient manufacture of graphene oxide with high quality, uniform particle size distribution, and reduced energy consumption. DETAILED DESCRIPTION - Manufacture of graphene oxide involves connecting carbon-based three-dimensional material as one electrode and another carbon-based three-dimensional material or an inert material as the other electrode, to the two electrodes of a direct-current power source, contacting one end face of carbon-based three-dimensional material electrode(s) as a working face in parallel with the liquid level of an electrolyte solution such that working region of the end face as a working face is located at -5 mm to 5 mm above the liquid level of the electrolyte solution, performing electrolysis, electrochemically-oxidizing, expanding, dissociating and cutting the graphite sheet layers on the end face into graphene oxide by discontinuously or continuously controlling the end face within the working region.