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1. (WO2014200311) METHOD FOR MANUFACTURING LITHIUM METAL PHOSPHATE

Pub. No.:    WO/2014/200311    International Application No.:    PCT/KR2014/005222
Publication Date: Fri Dec 19 00:59:59 CET 2014 International Filing Date: Sat Jun 14 01:59:59 CEST 2014
IPC: C01D 15/00
C01G 53/00
H01M 10/052
Applicants: SAMSUNG FINE CHEMICALS CO., LTD
삼성정밀화학 주식회사
Inventors: SONG, Hyun A
송현아
CHANG, Dong Gyu
장동규
KIM, Jong Min
김종민
SHIN, Jae Seung
신재승
Title: METHOD FOR MANUFACTURING LITHIUM METAL PHOSPHATE
Abstract:
The present invention relates to a method for manufacturing lithium metal phosphate (LMP) having, as a precursor, crystalline iron phosphate having a (meta)strengite structure or metal-doped crystalline iron phosphate having a (meta)strengite structure, the method comprising the steps of: mixing a lithium raw material with crystalline iron phosphate in slurry phase or cake phase; and heat-treating the mixture. The method, by having a lithium (Li) raw material and a carbon (C) coating material mixed with crystalline iron phosphate in slurry phase or cake phase, allows elements Li, Fe, P and C to be homogeneously mixed, and then, by having the elements dried simultaneously, enables manufacturing of high-quality LMP. Therefore, the present invention is not only capable of providing convenience during the manufacturing process for lithium metal phosphate, but also capable of providing a lithium secondary battery positive electrode active material having excellent battery characteristics.