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:
May. 26, 2026
Filed:
Mar. 24, 2021
Btr Nano Tech Co., Ltd., Shenzhen, CN;
Panasonic Energy Co., Ltd., Osaka, JP;
Youyuan Huang, Shenzhen, CN;
Shunyi Yang, Shenzhen, CN;
Xiong Song, Shenzhen, CN;
Hongxu Zhang, Shenzhen, CN;
Liang Luo, Shenzhen, CN;
Shun Nomura, Osaka, JP;
Koki Morita, Osaka, JP;
Takuya Shinomiya, Osaka, JP;
BTR Nano Tech Co., Ltd., Shenzhen, CN;
Panasonic Energy Co., Ltd., Osaka, JP;
Abstract
Provided is a cathode material, a preparation method thereof, and a secondary lithium battery. The cathode material is characterized in that a chemical formula of the cathode material is LiNiCoAlMO, where 0.95≤b≤1.10, 0≤x≤0.15, 0.01≤y≤0.1, 0<z≤0.05, and an M element is a metal element; the M element is distributed in interior and surface of the cathode material, the M element distributed in the interior of the cathode material is presented in a doped form, and the M element distributed in the surface of the cathode material is presented in a form of a coating layer formed of at least one of M oxide or lithium-M composite oxide; and a molar ratio of the M element in the interior to the M element in the surface is greater than 0.5. The cathode material provided has good high-rate capability and thermal stability.