▎ 摘　　要

NOVELTY - Preparing graphene oxide involves taking a high concentration inorganic salt aqueous solution as an electrolyte, graphite as an anode, and an inert conductive noble metal material as a cathode, performing an electrochemical stripping reaction to obtain a graphene oxide aggregate. The molar concentration of the high concentration inorganic salt aqueous solution is greater than or equal to 5 mole/L, and the anion of the inorganic salt has an oxidizing functional group. USE - Method for preparing graphene oxide. ADVANTAGE - The method uses a high concentration inorganic salt aqueous solution as the electrolyte, can suppress the rapid decomposition of water at a low voltage, and realize continuous intercalation of graphite. It changes the destruction of the integrity of the graphite electrode by the traditional low-concentration electrolyte, that enables deep intercalation and puffing of graphite. It has short preparation period, low cost, no acid solution, environmental friendliness, simple method and easy industrialized mass production.