▎ 摘　　要

NOVELTY - Olivine type composite anode material comprises a matrix and a composite phase; The matrix is lithium-metal-manganese-iron-metal phosphate complex (I). USE - The olivine-type composite anode material is useful in supercapacitors, lithium-ion batteries and/or lithium-sulfur batteries (claimed). ADVANTAGE - The olivine-type composite anode material has a metal-type electronic structure, low resistivity, strong chemical adsorption capacity, and stable chemical properties, high electrical conductivity and excellent chemical stability; and improves the electronic conductance and surface structure stability of the anode material in the working process. DETAILED DESCRIPTION - Olivine type composite anode material comprises a matrix and a composite phase; The matrix is lithium-metal-manganese-iron-metal phosphate complex of formula (LixM1yMnzFe1-z-uM2u(PO4)w(ROa)bCv) of formula (I). x = 0.5-1.3; y = 0-0.5; z = 0-1; u = 0-0.01; w = 0-1; v = 0-0.05; a = 0-8; b = 0-1; M1= Mg, Na or K; M2= Ga, Sn, V, Y, Mo, Al, Mg, Ce, Ti, Zr, Nb, Si, W or In; R = Si, Cl, Br, S, Sb or Sn; m and n = 0.1-5; T = Ti, Mo, Co, W, Zn, Cu, B, V, Nb, Ta, Pd, Cr, Ag, Al, Mn, Sn, Mg, Sc, Zr or Hf; and G = N and/or C. INDEPENDENT CLAIMS are also included for: 1. preparing olivine type composite anode material, comprising (i) first mixing the compound containing T element and the compound containing G element to obtain the first mixture, and performing the first heat treatment to the first mixture in the presence of protective atmosphere to obtain compound containing T and G, (ii) secondly mixing lithium source, carbon source, phosphorus source, optional iron source, the manganese source, the optional R source, optional M1 source, and the optional M2 source with solvent to obtain second mixture, grinding the second mixture to obtain a slurry, (iii) mixing compound containing T and G with the slurry for the third time and drying to obtain a powder, and (iv) performing second heat treatment on the powder In the presence of a non-oxidizing atmosphere, and crushing to obtain final product; and 2. lithium-ion battery, comprising the olivine-type composite anode material.