Patent ID: 8968594
Filing Date: 2015-03-03
Classification: C01B,H01M,Y02E

Abstract:
1. A method for producing a positive electrode active material for a lithium secondary battery, comprising: mixing lithium phosphate having a particle diameter D 90 of 100 μm or less prior to mixing, an M element-containing compound having a particle diameter D 90 of 100 μm or less prior to mixing, where, M is one type or two or more types of elements selected from the group consisting of Mg, Ca, Fe, Mn, Ni, Co, Zn, Ge, Cu, Cr, Ti, Sr, Ba, Sc, Y, Al, Ga, In, Si, B and rare earth elements, and water, adjusting the concentration of the M element with respect to water to 4 moles/L or more to obtain a raw material, and producing olivine-type LiMPO 4 by carrying out hydrothermal synthesis using the raw material.