▎ 摘　　要

NOVELTY - Graphene-coated lithium cobalt oxide material preparation involves preparing graphene by hummer method, dispersing the prepared graphene in ethanol, and then ground to obtain graphene solution. The obtained graphene ethanol solution is mixed with lithium cobalt oxide and water in a ball mill to obtain lithium cobalt oxide and graphene mixed solution. The obtained mixture is filtered to take filtrate, which is dried to obtain the graphene coated lithium cobalt oxide composite material. USE - Method for preparing graphene-coated lithium cobalt oxide material (claimed). ADVANTAGE - The method prepares the graphene-coated lithium cobalt oxide material in a simple and cost-effective manner with improved dispersion of lithium cobalt oxide, reduced amount of lithium cobalt oxide dissociation, and excellent electrochemical performance to improve utilization of lithium cobalt oxide.