abstract |
Among lithium metal composite oxides having a layer structure, a particularly excellent cathode active material for a battery mounted on an electric vehicle or a hybrid vehicle is provided. General formula Li1 + x (MnαCoβNiγ) 1-xO2 (0.00≰X≰0.07, 0.10≰α≰0.40, 0.10≰β≰0.40, 0.30≰γ≰0. 75), the specific surface area is greater than 2.0 m 2 / g and 5.0 m 2 / g or less, and the average particle size / crystallite size of primary particles is 5.7 to 18.5. A lithium metal composite oxide having the following is proposed. |