Patent ID: 9590246
Date: 2017-03-07
CPC Classifications: C01B,H01M,Y02E

Claim:
1. A method for producing a lithium metal phosphate by a conversion reaction of lithium ion (Li+) source, a divalent transition metal ion (M2+) source, and a phosphate ion (PO43−) source, the method comprising: preparing solution C having a pH of lower than 4 and a temperature of less than 150° C., and containing a lithium ion, a divalent transition metal ion, and a phosphate ion, heating the solution C at 150° C. or higher while the pH is lower than 4, adding a basic liquid to the solution C at 150° C. or higher for elevating the pH from less than 4 to not less than 4 in the presence of a polar solvent while maintaining the temperature of 150° C. or higher to initiate the conversion reaction, and subsequently maintaining the temperature of 150° C. or higher and the pH of 4 or higher to continue the conversion reaction.