Method for making lithium battery cathode material

A method for making a lithium battery cathode material comprising:

• providing a reactor and a mixed solution including a solvent, an iron salt material and a phosphate material;
• adding the mixed solution and a plurality of micro particles into the reactor, and adding an alkaline solution into the mixed solution until the mixed solution has a pH value ranging from about 1.5 to 5, and stirring the mixed solution to form a plurality of iron phosphate precursor particles, wherein the plurality of iron phosphate precursor particles is disposed in the mixed solution to form a liquid mixture;
• adding a lithium source solution and a reducing agent into the liquid mixture to form a lithium iron phosphate precursor slurry;
• and
• heat treating the lithium iron phosphate precursor slurry to form a plurality of lithium iron phosphate particles.

A method for making a lithium battery cathode material, the method comprising:

• providing a reactor and a mixed solution including a solvent, an iron salt material, and a phosphate material;
• adding the mixed solution and a plurality of micro particles into the reactor, and adding an alkaline solution into the mixed solution until the mixed solution has a pH value ranging from about 1.5 to 5, and stirring the mixed solution to form a plurality of iron phosphate precursor particles, wherein the plurality of iron phosphate precursor particles is disposed in the mixed solution to form a liquid mixture;
• separating the iron phosphate precursor particles from the liquid mixture and heating the iron phosphate precursor particles to a temperature from about 400° C. to about 700° C.;
• providing a lithium source solution and a reducing agent, and mixing the lithium source solution, the reducing agent, and the iron phosphate precursor particles to form a lithium iron phosphate precursor slurry;
• heat-treating the lithium iron phosphate precursor slurry to form a plurality of lithium iron phosphate particles.