申请人:SAMSUNG FINE CHEMICALS CO., LTD
公开号:US20150210546A1
公开(公告)日:2015-07-30
The present invention relates to a method for preparing a lithium metal phosphor oxide, the method including: mixing an iron salt solution and a phosphate solution in a reactor; applying a shearing force to the mixed solution in the reactor during the mixing to form a suspension containing nano-sized iron phosphate precipitate particles; obtaining the nano-sized iron phosphate particles from the suspension; and mixing the iron phosphate with a lithium raw material and performing firing, and the lithium metal phosphor oxide according to the present invention has an Equation of LiM
n
FePO
4
. Herein, M is selected from the group consisting of Ni, Co, Mn, Cr, Zr, Nb, Cu, V, Ti, Zn, Al, Ga, and Mg, and n is in a range of 0 to 1. According to the present invention, since calcination is performed at a temperature that is lower than that of another existing method, there is an effect of reducing a process cost, and the obtained lithium metal phosphor oxide prepared according to the method of the present invention has an olivine structure type.
本发明涉及一种制备锂金属磷酸盐的方法,该方法包括:在反应器中混合铁盐溶液和磷酸盐溶液;在混合过程中施加剪切力于反应器中的混合溶液,以形成含有纳米级铁磷酸盐沉淀颗粒的悬浮液;从悬浮液中获得纳米级铁磷酸盐颗粒;将铁磷酸盐与锂原料混合并进行烧结,根据本发明的锂金属磷酸盐的化学式为LiMnFePO4。此处,M选自Ni、Co、Mn、Cr、Zr、Nb、Cu、V、Ti、Zn、Al、Ga和Mg的群体,n在0到1的范围内。根据本发明,由于煅烧温度低于另一种现有方法,因此具有降低工艺成本的效果,并且根据本发明的方法制备的锂金属磷酸盐具有橄榄石结构类型。