Patent ID: 9054380
Filing Date: 2015-06-09
Classification: H01M,Y02E

Abstract:
1. A method for making a lithium battery cathode material comprising: providing a mixed solution including a solvent, an iron salt material, and a phosphate material; adding an alkaline solution into 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 a mixture of the mixed solution and the plurality of micro particles to react the iron salt with the phosphate material to form a plurality of iron phosphate precursor particles; providing a lithium source solution and a reducing agent, and mixing the lithium source solution, the reducing agent, and the plurality of iron phosphate precursor particles to form a lithium iron phosphate precursor slurry; and coating outer surfaces of a plurality of lithium vanadium phosphate particles with the lithium iron phosphate precursor slurry by following steps: