▎ 摘　　要

NOVELTY - Anode material of olivine structure comprising lithium-iron-phosphate-carbon complex (Li1+a(M)1-x-y(Fe)x(G)y(PO)4Cz) is new. The center of the anode material to the outer surface of the direction, the content respectively the M element and iron element is distributed in gradient. USE - The material is useful in lithium ion battery (claimed). ADVANTAGE - The material: has a high voltage platform near the center of the anode material provides high energy density; has the effect of stabilizing the structure; prevents the dissolution of transition metals, and improves the cycle performance and safety performance of the material. DETAILED DESCRIPTION - Anode material of olivine structure comprising lithium-iron-phosphate-carbon complex (Li1+a(M)1-x-y(Fe)x(G)y(PO)4Cz) is new. The center of the anode material to the outer surface of the direction, the content respectively the M element and iron element is distributed in gradient. a = -0.2 to 0.2; x = 0-1; y = 0-0.05; z = 0-0.1; M = Mn, Co, V and Ni; and G = Ga, Sn, V, Mo, Al, Mg, Ce, Ti, Zr, Nb, Si, W and In. An INDEPENDENT CLAIM is also included for preparing the anode material comprising (a) mixing the lithium-containing compound, M-containing compound, iron-containing compound, G-containing compound, phosphorus source, carbon source, reducing agent and solvent to obtain mixed solution, heating the mixed solution and initiating combustion reaction, crushing the combustion reaction product to obtain the first precursor, (2) mixing the lithium source, iron source, phosphorus source, carbon source, compound containing G with solvent, performing dissociation and homogenizing, obtaining slurry A, uniformly mixing the slurry A with the first precursor, obtaining slurry B, drying the slurry B to obtain second precursor of olivine structure anode material and (c) sintering the second precursor of the olivine structure anode material in the protective atmosphere and crushing to obtain the olivine structure anode material.