| abstract |
(57) [Summary] (with correction) [PROBLEMS] To provide a method for producing a lithium transition metal composite oxide capable of recycling waste, improving productivity, and suppressing an increase in production cost. SOLUTION: A slurry in which a lithium compound and a transition metal compound or, in some cases, a substituted metal element compound of a transition metal are mixed in a solvent is spray-dried and then fired to produce a lithium-transition metal composite oxide. After spray-drying in the method, of the obtained spray-dried products, an off-spec product is mixed in a solvent, and if necessary, a lithium compound and / or a transition metal compound or, if necessary, a substituted metal element compound of a transition metal is added. And again spray-drying and firing. |