Abstract: As an anode material for lithium ion batteries, graphene presents amazing electrochemical performance. Nevertheless, graphene is easy to agglomerate during charge-discharge process, which results in a sharp decrease of its capacitance. Metal oxides show large volume swell in charge and discharge process, leading to severe capacitance decay of the metal material. Besides, the low conductivity of metal oxide brings about the poor charge-discharge rate performance of the material. When the metal oxide and graphene are combined to form composite materials, they are mutually complementary in properties. Graphene can improve the electrical conductivity of the composite materials and relieve the volume variation of the metal oxide during charging and discharging. Metal oxide can enlarge the storage capacitance of composite materials and avoids the agglomeration of graphene during charging and discharging. This paper introduces the preparation method of graphene/CuO anode materials, and analyzes the mechanism of the lit-hium storage of each component and the composite materials. The application prospect of graphene/CuO anode materials for lithium ion batteries are proposed and the problems in current research are pointed out as well.
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2018, Vol. 32 
