▎ 摘　　要

NOVELTY - Cobalt borate/graphene composite material comprises nanorod structure cobalt borate embedded in the folded graphene having a mass percentage of 10-95%. USE - The material is useful for cathode of lithium ion battery. ADVANTAGE - The material: has high specific capacity, good cycle performance, excellent rate performance and long cycle life. The method is simple, economical and is easy to realize industrial scale production. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing cobalt borate/graphene composite material comprising dissolving the water-soluble cobalt salt and sodium tetraborate decahydrate in deionized water, adding the graphene oxide solution to control the temperature and reaction time under hydrothermal reaction conditions, synthesizing graphene oxide using chemical method, centrifugally washing and drying the precipitate.