▎ 摘　　要

NOVELTY - The method involves (i) limiting a graphite raw material and extruded by a conveying device, a positive electrode (1) in a conveying process, a negative electrode the condition of electrolyte soaking, positive electrode, the graphite raw material sequentially through the intercalation groove and an oxidation groove, respectively generating intercalation reaction and oxidation reaction, stripping and cleaning the material after positive electrode the oxidation reaction to obtain the graphene material; (ii) connecting a conductive roller (2) with the positive electrode of a power supply through a lead; (iii) connecting a plug layer groove and the oxidation groove to a negative electrode supply (3) through the lead; and (iv) soaking an inserting layer groove and the oxidation groove in an intercalation electrolyte (12) and an oxidation electrolyte (13). USE - The method is useful for continuously preparing graphene oxide by two-step electrochemical method. ADVANTAGE - The method ensures that the product is fully oxidized, the preparation process is continuous and efficient, and it can be used for scale preparation of oxidized graphene material. The electrolyte will not be polluted, can be utilized for long time stable multiplexing, and the electrolyte consumption is small. The preparation process water consumption is less than 40 times of the product quality. The method does not introduce heavy metal ion, and will not introduce oxygen-containing functional group. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the continuously preparing graphene oxide by two-step electrochemical method. 1Positive electrode 2Conductive roller 3Negative electrode supply 12Intercalation electrolyte 13Oxidation electrolyte