| abstract |
A method for making a cathode active material of a lithium ion battery is disclosed. In the method, LiMPO 4 particles and LiNPO 4 particles are provided. The LiMPO 4 particles and LiNPO 4 particles both are olivine type crystals belonged to a pnma space group of an orthorhombic crystal system, wherein M represents Fe, Mn, Co, or Ni, N represents a metal element having a +2 valence, and N is different from M. The LiMPO 4 particles and the LiNPO 4 particles are mixed together to form a precursor. The precursor is calcined to form LiM x N 1-x PO 4 particles, wherein 0<x<1. |