Patent ID: 8163198
Filing Date: 2012-04-24
Classification: C01G,C01P,H01M,Y02E

Abstract:
1. A process, comprising: i) blending and kneading a N element source in the form of a powder and optionally a fluorine source, in an apparatus, spraying a solution comprising a M element source into the N element source powder during said blending and kneading to obtain a blend comprising N element, M element, and optionally fluorine and drying the blend, and blending a powder comprising lithium with said blend; or ii) blending and kneading a N element source in the form of a powder and optionally a fluorine source, in an apparatus, spraying a solution comprising a lithium source and a M element source into the N element source powder during said blending and kneading to obtain a blend comprising N element, M element, and, optionally, fluorine, and drying said blend; or iii) blending and kneading a lithium source, a N element source in the form of a powder, and optionally a fluorine source, in an apparatus to obtain a blend, spraying a solution comprising a M element source into the blend during said blending and kneading to obtain a blended product comprising lithium, N element, M element, and optionally fluorine, and drying the blended product, to obtain a powder blended product; firing, in an atmosphere comprising oxygen at a temperature of from 250° C. to 700° C., said powder blended product to produce a first-stage fired product; and firing said first-stage fired product a second time at a temperature ranging from 950° C. to 1,100° C. to produce the lithium-containing composite oxide represented by wherein and and wherein N is at least one element selected from the group consisting of Co, Mn and Ni; M is at least one element selected from the group consisting of Zr, Hf, Ti, Nb, Ta, Mg, Cu, Sn, Zn and Al; and the M element solution comprises at least one of citric acid, tartaric acid, and oxalic acid.