▎ 摘　　要

NOVELTY - Preparing copper oxide composite cathode material involves preparing graphene dispersion and mixing graphite raw material with hydrogen peroxide and concentrating sulfuric acid to obtain an intercalated graphite sulfate. The sulfuric acid intercalated graphite is microwave treated for 3-6 hours, and then subjected to ultrasonic treatment to obtain thin layer of graphite at 350-400 degrees C. The thin layer of graphite is reacted with magnesium chloride to obtain thin layer of metal chloride intercalation. The metal chloride intercalated thin graphite is mixed with concentrated sulfuric acid. USE - Method for preparing copper oxide composite cathode material for lithium ion battery. ADVANTAGE - The method enables to prepare copper oxide composite cathode material which has high specific capacity and long service life. DETAILED DESCRIPTION - Preparing copper oxide composite cathode material involves preparing graphene dispersion and mixing graphite raw material with hydrogen peroxide and concentrating sulfuric acid to obtain an intercalated graphite sulfate. The sulfuric acid intercalated graphite is microwave treated for 3-6 hours, and then subjected to ultrasonic treatment to obtain thin layer of graphite at 350-400 degrees C. The thin layer of graphite is reacted with magnesium chloride to obtain thin layer of metal chloride intercalation. The metal chloride intercalated thin graphite is mixed with concentrated sulfuric acid and fully reacted, and then reaction product is subjected to ultrasonication followed by washing, and drying in sequence to obtain thin layer of graphene. The thin layer of graphene is dispersed in distilled water. The formation of graphene dispersion is processed by preparing copper precursor mixed solution, separately preparing pyrrole monomer solution, where concentration of 0.1-0.3 mole per liter of copper acetate solution, and performing ultrasonic uniform dispersion, according to volume ratio of 1:6-1:2 to obtain pyrrole monomer solution and copper acetate solution. The two are uniformly mixed to form copper salt precursor mixed solution. The preparation of composite zirconium phosphate graphene supported cupric oxide/polypyrazole composite material involves placing graphene oxide dispersion in a protective atmosphere, and adding copper salt precursor mixed solution and zirconium phosphate powder, where mass ratio of graphene oxide: copper acetate and zirconium phosphate is 1:(5-8):(1-2), stirring for 30-40 minutes, adding sodium hydroxide solution to making the mixture to pH 8-10, stirring for 50-60 minutes, and transfering the mixture to a hydrothermal reaction vessel at 150-200 degrees C The reaction was carried out for 10-20 hours. The products obtained by reaction are respectively washed with anhydrous ethanol and deionized water, and vacuum freeze-dried to obtain composite zirconium phosphate-graphene-supported cupric oxide/polypyrrole composite material.