Contemporary Amperex Technology Co., Ltd.

Kelun Wang

Jinhua He

Qi Wu

Changyin Ji

Tao Qiao

The present disclosure relates to a ternary positive electrode material and a battery using the ternary positive electrode material. The ternary positive electrode material includes secondary particles composed of primary particles. The secondary particles have an average particle diameter D50 of 6 &#x3bc;m-20 &#x3bc;m, BET of 0.2 m/g-1 m/g, and the number &#x3c3; of primary particles per unit area of the secondary particles is 5 particles/&#x3bc;m-100 particles/&#x3bc;m. The ternary positive electrode material has a formula of Li[NiCoMnM1M2]ON, where element M1 and element M2 are each independently selected from at least one of Al, Zr, Ti, Mg, Zn, B, Ca, Ce, Te and Fe, element N is selected from at least one of F, Cl and S, and 0&#x3c;x&#x3c;1, 0&#x3c;y&#x2264;0.3, 0&#x2264;z&#x2264;0.3, &#x2212;0.1&#x3c;a&#x3c;0.2, 0&#x2264;b&#x3c;0.3, 0&#x2264;c&#x3c;0.3, 0&#x2264;d&#x3c;0.2, 0&#x2264;b+c&#x2264;0.3, x+y+z+b=1. The formed secondary particles have high compactness, thereby effectively improving the structural stability and the cycling performance at high or low temperature.

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Ningde, China

Kelun Wang