▎ 摘　　要

NOVELTY - The method involves preparing graphene oxide water solution by mixing graphite oxide with the water, where mass concentration of the graphite oxide is 0.1-10.0g/L. Carbon coated metal oxide/graphene is mixed with composite electrode material at mass concentration of 0.01-1.0g/ml of metal oxide precursor and a carbon source precursor solution. The dispersed solution is filled in a hydro-thermal reaction kettle and maintained under 180-250 degree Celsius for 6-48 hours. The kettle is cooled by distilled water. USE - Carbon coated metal oxide graphene composite electrode material preparation method. ADVANTAGE - The method enables increasing capacity and circulation stability of a battery and ensuring simple and feasible process. DESCRIPTION OF DRAWING(S) - The drawing shows a graph illustrating a carbon coated metal oxide graphene composite electrode material preparation method. '(Drawing includes non-English language text)'