POSITIVE COMPOSITION FOR LITHIUM SECONDARY BATTERY USING SPHERICAL MIXED METAL CARBONATE WITH NANO-TITANATE AND MANUFACTURING METHOD THEREOF

摘要

The present invention relates to a positive electrode material for a non-aqueous lithium secondary battery using a spherical transition metal carbonate complex and a manufacturing method thereof. The present invention improves structural stability of a final positive electrode material by coating the surface of the spherical transition metal carbonate complex with nano-sized metal oxide and obtains excellent life property while obtaining high capacity of 250mAh/g or more. According to the present invention, the spherical transition metal carbonate complex produced by using cobalt raw materials, nickel raw material, manganese raw material, and ammonium carbonate-based raw materials is coated with titanium dioxide, and the transition metal carbonate complex coated with transition metal oxide with a particle size of 5-25 μm having composition of NixCoyMn1-x-yTizCO3(0.0