▎ 摘　　要

NOVELTY - Preparing graphene comprises (i) mixing graphene oxide solution with reducing agent and reacting to obtain chemically reduced graphene solution, (ii) adding chemically reduced graphene solution into electrolytic cell, and further reducing electrochemical reaction to improve reduction degree of graphene to obtain electrochemically reduced graphene solution, and (iii) adding dispersant to electrochemically reduced graphene solution, mixing and reacting to obtain uniformly dispersed graphene solution. The reducing agent includes organic acids, borohydrides, citrates, ascorbates, halogen acids, alcohols, sugars, amino acids, sulfur-containing reducing agents, nitrogen-containing reducing agents, and/or reducing plant extracts. The dispersant includes peroxide, percarbonate, persulfate, permanganic acid and permanganate, ferric acid and ferrate, chloric acid and chlorate, carbonate, and/or bicarbonate, USE - The method is useful for preparing graphene. ADVANTAGE - The method: is simple and suitable for industrial production; and avoids agglomeration of graphene. The graphene has high reduction degree, high quality and good dispersion uniformity. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of flow chart for preparing grapheme. (Drawing includes non-English language text).