Patent ID: 8287828
Filing Date: 2012-10-16
Classification: H01M,Y02E

Abstract:
1. A process for producing a lithium-containing composite oxide for a positive electrode for a lithium secondary battery, the lithium-containing composite oxide being represented by the formula Li p Q q N x M y O 2 (wherein Q is at least one element selected from the group consisting of titanium and zirconium, N is Co, M is at least one element selected from the group consisting of Al, alkaline earth metal elements and transition metal elements other than Q, Co, Mn and Ni,0.9≦p≦1.1, 0<q≦0.03, 0.97≦x<1.00, 0≦y<0.03 and q+x+y=1), which comprises firing a mixture of a lithium source, an Q element source and an N element source, in an oxygen-containing atmosphere, wherein the Q element source is a Q element compound aqueous solution having a pH of from 0.5 to 11, wherein the Q element compound aqueous solution is selected from the group consisting of an aqueous solution of titanium lactate chelate, an aqueous solution of triethanolamine titanium chelate, an aqueous solution of zirconium ammonium carbonate and an aqueous solution of a halogenated zirconium ammonium, and said mixture is fired at from 950 to 1,080° C.