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:
Sep. 09, 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
This application discloses a positive electrode active material, including bulk particles and a coating layer applied on an exterior surface of each of the bulk particles, where the bulk particle includes a lithium composite oxide that contains element nickel and a doping element M, and the coating layer includes an oxide of element M. When the positive electrode active material is in a 11% delithiated state, average valences of element Mand Mare αand β, respectively; when the positive electrode active material is in a 78% delithiated state, average valences of element Mand Mare αand β, respectively; and α>α, β=β. Element Mincludes one or more of Si, Ti, Cr, Mo, V, Se, Nb, Ru, Rh, Pd, Sb, Te, Ce, and W, and element Mis selected from one or more of Mg, Al, Ca, Zr, Zn, Y, and B.