Patent ID: 9643859
Date: 2017-05-09
CPC Classifications: C01G,C01P,H01M,Y02E

Claim:
1. A process for producing a carbonate compound, which comprises mixing the following sulfate (A) and the following carbonate (B) in the form of aqueous solutions and controlling the proportion of Mn to the total of Ni, Co and Mn contained in the sulfate (A) to be higher than 65 mol % at the initiation of the mixing, to precipitate a carbonate compound having a proportion of Mn of from 33.3 to 65 mol %, a proportion of Ni of from 17.5 to 50 mol % and a proportion of Co of from 0 to 33.3 mol % to the total of Ni, Co and Mn in the total average composition: sulfate (A): a sulfate comprising a sulfate of Mn and a sulfate of Ni, or a sulfate comprising a sulfate of Mn, a sulfate of Ni and a sulfate of Co, and carbonate (B): at least one carbonate selected from the group consisting of sodium carbonate and potassium carbonate.