▎ 摘　　要

NOVELTY - Graphene/basic cobalt carbonate nano-three-dimensional composite material involves preparing oxidized graphene aqueous sol uses Hummer's method to prepare graphene oxide. The prepared graphene oxide is dispersed ultrasonically in water, oxide graphene sol surface to obtain oxidized graphene aqueous sol which is prepared with negative charge. The graphene/basic cobalt carbonate hydrogel post is prepared by adding urea to prepared oxide graphene sol and stirred for 5-10 minute. The cobalt salt is added and stirred for 5-10 minutes to obtain precursor solution. The precursor solution is placed into reaction kettle. The reaction kettle temperature is 160 degrees C and placed in oven to constant temperature for 24 hours to obtain graphene/hydrogel post. The graphene/basic cobalt carbonate hydrogel post is rinsed for 6-8 times by pure water to remove soluble impurities, freezed in vacuum and dried to obtain graphene under (-)56 degrees C/basic cobalt carbonate nano-three-dimensional composite material. USE - Graphene/basic cobalt carbonate nano-three-dimensional composite material used on lithium ion battery anode material (claimed). ADVANTAGE - The graphene/basic cobalt carbonate nano-three-dimensional composite material is convenient for industrial production and cost effective, and has great application prospect.