▎ 摘　　要

NOVELTY - The method for electrochemically preparing graphene, involves: (S1) mixing a graphene oxide solution with a reducing agent and reacting to obtain a chemically reduced graphene solution; and (S2) introducing the chemically reduced graphene solution into an electrolytic cell, where the electrochemical reaction is used for further reduction to improve the reduction degree of the graphene to obtain an electrochemically reduced graphene solution, and the graphene is uniformly dispersed in the solution. The reducing agent is organic acid, borohydride, citrate, ascorbate, hydrohalic acid, alcohol compounds, carbohydrates, amino acids, sulfur-containing reducing agents, nitrogen-containing reducing agents, and reduced plant extracts. The electrolyte used in the electrochemical reaction is an aqueous electrolyte or a non-aqueous electrolyte, preferably an acid, an alkali and/or a salt. USE - The method is useful for electrochemically preparing graphene, which is useful in graphene paper, heat dissipation coatings, heat sinks, heat generating sheets, conductive coatings, conductive inks, conductive adhesives, antistatic coatings, antistatic plastics, conductive plastics, conductive rubbers, conductive films, anti-corrosion coatings, building materials, wear-resistant coatings, reinforced plastics, graphene tires, foam materials, water-proof plastics, reinforcing materials, graphene fibers, graphene brake pads, carbon composite materials, oil-absorbing sponges, seawater desalination and sewage purification. ADVANTAGE - The method combines a chemical reduction method with an electrochemical reduction method to improve the reduction degree of graphene, to prepare high-quality graphene, and to uniformly disperse graphene in a solution at the same time. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of the steps for electrochemically preparing graphene. (Drawing includes non-English language text). mixing a graphene oxide solution with a reducing agent and reacting to obtain a chemically reduced graphene solution (S1) introducing the chemically reduced graphene solution into an electrolytic cell, where the electrochemical reaction is used for further reduction to improve the reduction degree of the graphene to obtain an electrochemically reduced graphene solution, and the graphene is uniformly dispersed in the solution (S2)