Preparation method of high-dispersity micro-oxidized graphene

The invention discloses a preparation method of high-dispersity micro-oxidized graphene. The preparation method comprises the following steps: (1) adding graphene powder and a peracetic acid disinfectant into a high-pressure stirring reaction kettle; (2) starting mechanical stirring, heating to 120-180 DEG C, and keeping for 8-48 hours; and (3) after the reaction kettle is cooled to normal temperature, filtering a solid-liquid mixture in the kettle, and drying the solid to obtain the high-dispersity micro-oxidized graphene. According to the method disclosed by the invention, the dispersity of micro-oxidized graphene in a liquid phase can be effectively improved, and a feasible strategy is provided for preparation and utilization of graphene slurry. According to the method, strong acid, strong alkali and impurity anions and cations are not introduced, and only water, acetic acid and oxygen are generated. The method is simple in process, green, low in pollution, low in operation risk, low in equipment investmen