Process for producing lithium-containing composite oxide for positive electrode of lithium secondary battery

Abstract

A process for producing a lithium-containing composite oxide such as a lithium-cobalt composite oxide for a lithium secondary battery, excellent in durability for charge/discharge cycles and excellent in low temperature characteristics, is provided. A process for producing a lithium-containing composite oxide for positive electrode of lithium secondary battery, which is a process for producing a lithium-containing composite oxide represented by a general formula LipNxMyOzFa (wherein N is at least one type of element selected from the group consisting of Co, Mn and Ni, and M is at least one type of element selected from the group consisting of Al, an alkali earth metal element and a transition metal element other than N, 0.9≦p≦1.2, 0.97≦x≦1.00, 0<y≦0.03, 1.9≦z≦2.2, x+y=1 and 0≦a≦0.02), the process comprising a step of firing a blended product containing a lithium source, an N element source, an M element source, and as the case requires, a fluorine source in an oxygen-containing atmosphere; wherein as the N element source and the M element source, a material produced by drying a powder containing the N element source while a solution containing the M element source is sprayed to the powder, is used.

Dependencies are inferred from the claim text.