Niobium and barium activated lithium iron phosphate anode material

The invention relates to a niobium and barium activated lithium iron phosphate anode material, which can be represented by the chemical general formula: LiNbxBayFePO4, wherein the x ranges from 0.00002 to 0.00005, the y ranges from 0.0003 to 0.003, the molar ratio among Li, Nb, Ba, Fe and P is 1mol Li: 0.00002-0.00005mol Nb: 0.0003-0.003mol Ba: 1mol Fe: 1mol P. By the aid of a small amount of substituted niobium and barium which are doped, the shape and the grain size of a product can be controlled beneficially, and a stable lithium iron phosphate compound is obtained, so that crystal lattices of the stable lithium iron phosphate compound are activated, lithium-ion diffusion coefficient is increased, the first discharge capacity is as high as 160.52mAh/g, a charge-discharge platform is about 3.5V relative to a lithium electrode potential, the initial discharge capacity exceeds 168mAh/g, and the capacity is attenuated by about 1.2% after one hundred times of cycle. Compared with an embodiment of undoped LiFePO4, the niobium and barium activated lithium iron phosphate anode material is higher in specific capacity and cyclical stability.