The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 16, 2021
Filed:
Apr. 23, 2019
Contemporary Amperex Technology Co., Limited, Ningde, CN;
Qi Wu, Ningde, CN;
Jinhua He, Ningde, CN;
Changyin Ji, Ningde, CN;
Tao Qiao, Ningde, CN;
Kelun Wang, Ningde, CN;
Abstract
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 μm-20 μm, BET of 0.2 m/g-1 m/g, and the number σ of primary particles per unit area of the secondary particles is 5 particles/μm-100 particles/μm. 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<x<1, 0<y≤0.3, 0≤z≤0.3, −0.1<a<0.2, 0≤b<0.3, 0≤c<0.3, 0≤d<0.2, 0≤b+c≤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.