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:
Jun. 24, 2025
Filed:
Feb. 28, 2022
Contemporary Amperex Technology (Hong Kong) Limited, Hong Kong, CN;
Shushi Dou, Ningde, CN;
Chunhua Hu, Ningde, CN;
Yao Jiang, Ningde, CN;
Qi Wu, Ningde, CN;
Jinhua He, Ningde, CN;
Bin Deng, Ningde, CN;
CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong, CN;
Abstract
A positive electrode active material and a preparation method thereof, a positive electrode plate, a lithium-ion secondary battery, and a battery module, battery pack, and apparatus containing such lithium-ion secondary battery are provided. The positive electrode active material includes matrix particles and a coating layer covering an exterior surface of the matrix particle, where the matrix particle includes a lithium nickel cobalt manganese oxide, and the coating layer includes an oxide of element M; the matrix particle is doped with element Mand element M, element Min the matrix particle is uniformly distributed, and element Min the matrix particle has a decreasing concentration from the exterior surface to a core of the matrix particle; and element Mand element Mare each independently selected from one or more of Mg, Al, Ca, Ba, Ti, Zr, Zn, and B, and element Mincludes one or more of Si, Ti, Cr, Mo, V, Ge, Se, Zr, Nb, Ru, Rh, Pd, Sb, Te, Ce, and W.