▎ 摘　　要

NOVELTY - Preparing graphene foam-nickel oxide composite electrode material comprises e.g. placing the foamed nickel in a tube furnace while introducing a mixed gas of methane, hydrogen and argon, heating, cooling to room temperature to obtain graphene-coated foamed nickel, immersing in a mixed solution of ferric chloride and hydrochloric acid, taking out, washing with deionized water, and drying to obtain graphene foam, Preparing a mixed solution of nickel salt, trimesic acid and polyvinylpyrrolidone, water, ethanol and N,N-dimethylformamide, and mixing the solvent with prepared graphene foam, placing in a reaction vessel for solvothermal reaction, and the mass ratio of the nickel salt to the graphene foam, washing the product with deionized water and drying to obtain a graphene foam-nickel-based metal organic skeleton composite material, and naturally cooling to room temperature after calcination. USE - The material is useful as a lithium ion battery electrode material (claimed). ADVANTAGE - The method is simple, and is economical and environmentally friendly. The material has large specific capacity, high cycle stability and good multiplying power performance. DETAILED DESCRIPTION - Preparing graphene foam-nickel oxide composite electrode material comprises (i) placing the foamed nickel in a tube furnace while introducing a mixed gas of methane, hydrogen and argon (volume ratio 1:16:40), heating to 1000-1100 degrees C and holding it at this temperature for a period of time, cooling to room temperature to obtain graphene-coated foamed nickel, immersing in a mixed solution of ferric chloride and hydrochloric acid for 12-24 hours, taking out, washing with deionized water, and drying to obtain graphene foam, (ii) Preparing a mixed solution of nickel salt, trimesic acid and polyvinylpyrrolidone in a volume ratio of 1:1:1 water, ethanol and N,N-dimethylformamide, and mixing the solvent with prepared graphene foam, placing in a reaction vessel for solvothermal reaction, and the mass ratio of the nickel salt to the graphene foam is 350:1-700:1, washing the product with deionized water and drying to obtain a graphene foam-nickel-based metal organic skeleton composite material, and (iii) subjecting the graphene foam-nickel-based metal organic skeleton composite to high-temperature calcination at a calcination temperature of 300-400 degrees C, and naturally cooling to room temperature after calcination. An INDEPENDENT CLAIM is also included for graphene foam-nickel oxide composite electrode material.