(1．National Quality Supervision and Inspection Center of Graphene Product, Guangzhou Special Pressure Equipment Inspection and Research Institute, Guangzhou 510663,China) （2. Guangzhou Customs District Technology Center, Guangzhou 510623, China)
Graphene has flexible, two-dimensional, ultra-thin structure characteristics, and physical and chemical properties such as high electrical conductivity, good thermal conductivity, strong mechanical properties and good chemical stability, which make it a promising conductive agent for lithium-ion batteries. The dispersion of graphene is the main factor restricting its wide application in lithium-ion batteries. In this paper, based on the structural characteristics, derivative types and preparation methods of graphene, the dispersion methods of graphene conductive agents are reviewed from the aspects of improving the wettability, synergistic dispersion and preventing secondary agglomeration of graphene, including chemical modification method, in-situ reduction method, composite conductive additive method, adding dispersant method and other methods. Finally, the application trend and research direction of graphene conductive agent in the future are prospected.