Patent ID: 9029018
Filing Date: 2015-05-12
Classification: H01M,Y02E

Abstract:
1. A method for making a lithium battery cathode material, the method comprising: providing a mixed solution including a solvent, an iron salt material, a vanadium source material, and a phosphate material; adding an alkaline solution in the mixed solution until the mixed solution has a pH value ranging from about 1.5 to 5 and adding a plurality of micro particles in the mixed solution; stirring the mixed solution to react the iron salt and the vanadium source material with the phosphate material to form a plurality of precursor particles of iron phosphate doped with vanadium, wherein the stirring the mixed solution comprises maintaining the plurality of micro particles in the mixed solution during reacting the iron salt and the vanadium source material with the phosphate material; providing a lithium source solution and a reducing agent, mixing the lithium source solution, the reducing agent and the plurality of iron phosphate precursor particles to form a precursor slurry of lithium iron phosphate doped with vanadium; and coating the precursor slurry of lithium iron phosphate doped with vanadium on outer surfaces of a plurality of lithium vanadium phosphate particles by following steps: