Novak Druce Connolly Bove + Quigg LLP
Method for making lithium iron phosphate cathode material
A method for making lithium iron phosphate is provided. In the method, an alkali is reacted with a ferric salt in water to form a red colored ferric hydroxide precipitate in the water. The red colored ferric hydroxide precipitate is mixed with deionized water, organic solvent, and emulsifier to form an water-in-oil emulsion. The phosphoric acid solution and iron metal powder are added to the water-in-oil emulsion to form ferrous hydrogen phosphate. A lithium source is introduced to the water-in-oil emulsion and reacted with the ferrous hydrogen phosphate to form a precursor in the water-in-oil emulsion. The precursor is heated in a protective gas at a heating temperature in a range from about 600° C. to about 800° C. to form lithium iron phosphate.
Tsinghua University HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.
C C C C C
C01B C01B C01B C01D C01B
inventional additional inventional additional inventional
Jin-Hai Yong-Gang Yu-Ming Shu-Bo Xiao-Feng Mou Yao-Wu Xiao Jing-Bo
Wang Liu Shang Wang Xie Fang Wang Zhao Chen