▎ 摘　　要

NOVELTY - Preparing graphene comprises (i) mixing (S1) the graphene oxide solution with reducing agent and reacting to obtain the graphene solution of chemical reduction, (ii) placing (S2) the chemically reduced graphene solution into the electrolytic cell, using electrochemical reaction to further reduce, improving the reduction degree of graphene, and obtaining the graphene liquid after electrochemical reduction, and (iii) adding (S3) the dispersing agent into the graphene solvent after the chemical reduction, mixing and reacting, and (iv) adding (S4) the uniformly dispersed graphene solution to the solvent to filter, removing the impurities in the graphene fluid to obtain a graphene solution that is uniformly dispersed in the solvent, where the solvent is an inorganic solvent or an organic solvent. USE - Method for preparing graphene. Uses include but are not limited to lithium ion battery, sodium ion battery, potassium ion battery, magnesium ion battery, solid battery, conductive agent, graphene paper, super capacitor, solar battery, transparent coating, flexible display device, transparent conductive film, photoelectric detector, radiating coating, radiating sheet, heating sheet, conductive coating, conductive ink, conductive adhesive, antistatic coating, antistatic plastic, conductive plastic, conductive rubber, conductive film, and anticorrosive paint. ADVANTAGE - The method enables to prepare graphene, which improves the reduction effect of graphene, so that the graphene is uniformly dispersed in each kind of solvent, and can efficiently and conveniently remove various impurities in the graphene. The method has simple process, high repeatability and possibility of application and popularization. DESCRIPTION OF DRAWING(S) - The drawing shows a flow diagram illustrating the process for preparing graphene. (Drawing includes non-English language text). Step for mixing the graphene oxide solution with reducing agent and reacting to obtain the graphene solution of chemical reduction (S1) Step for placing the chemically reduced graphene solution into the electrolytic cell, using electrochemical reaction to further reduce, improving the reduction degree of graphene, and obtaining the graphene liquid after electrochemical reduction (S2) Step for adding the dispersing agent into the graphene solvent after the chemical reduction, mixing and reacting (S3) Step for adding the uniformly dispersed graphene solution to the solvent to filter (S4)