| abstract |
The present invention discloses a spherical or spherical-like lithium battery cathode material, its battery, and its manufacturing method and application. The formula of the cathode material is Li a Ni x Co y Mn z M b O 2 , where 1.0 a 2.2; 0.0 < b? 0.05; 0.30? X? 0.90; 0.05? Y? 0.40; 0.05? Z? 0.50; x + y + z + b = 1 and M is at least one of Mg, Ti, Al, Zr, Y, Co, Mn, Ni, Ba and rare earth elements. The single a-NaFeO 2 type layer structure of the cathode material is represented by a powder X-ray diffraction pattern and the half height width FWHM (110) of the (110) diffraction peak near the diffraction angle 2? Of 64.9 is in the range of 0.073 to 0.145 In the range; The shape of the cathode material is spherical or spherical-like primary particles and a small amount of secondary particles; The cumulative percentage of the number of particles having a particle size of 5 [mu] m or less is the number of secondary particles agglomerated by the primary particles of the cathode material and the primary particles - typically greater than 60% in the reference particle size. The cathode material in the present invention has excellent circulation performance, storage performance, and safety performance under high temperature and high voltage and is suitable for digital products, electric vehicles, electric bicycles, gosol charging buses, passenger cars, communication products, electric power and energy storage systems. |