▎ 摘　　要

NOVELTY - A lithium-rich three-dimensional graphene composite anode material preparing method involves utilizing raw materials such as manganese compound, nickel compound, cobalt compound and urea, dissolving the raw materials with water and graphene oxide to prepare precursor solution. The precursor solution is heated to obtain reflux reaction. The reaction product is subjected to cooling, filtering and washing to obtain precursor, followed by adding precursor with lithium and transition metal to obtain composite material, pre-sintering and calcinating the composite material to obtain finished product. USE - Method for preparing lithium-rich three-dimensional graphene composite anode material. ADVANTAGE - The method enables preparing the graphene composite anode material with high circulation property, high electrochemical property and excellent comprehensive property. DETAILED DESCRIPTION - A lithium-rich three-dimensional graphene composite anode material preparing method involves utilizing raw materials such as manganese compound, nickel compound, cobalt compound and urea, dissolving the raw materials with water and graphene oxide or graphene 3-dimensional aqueous solution to prepare precursor solution. The precursor solution is heated at 95-200 degrees C for 1-50 hours to obtain reflux reaction. The reaction product is subjected to cooling, aging, filtering and washing to obtain precursor, followed by adding precursor with lithium salt and transition metal such as manganese, nickel and cobalt to obtain composite material, pre-sintering and calcinating the composite material by adding organic solvent to obtain lithium-rich/3-dimensional graphene composite anode material (Li(1+x)(Mn(1-y-z)(CoyNiz))(1-x)O2/3-dimensional graphene), where the x is 0.02-0.6, y is 0-1, z is 0-1 and 1-y-z is 0-1.