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. 15, 2026
Filed:
Apr. 29, 2022
Guangdong Brunp Recycling Technology Co., Ltd., Foshan, CN;
Hunan Brunp Recycling Technology Co., Ltd., Changsha, CN;
Hunan Brunp Ev Recycling Co., Ltd., Changsha, CN;
Bin Li, Foshan, CN;
Changdong Li, Foshan, CN;
Weijian Liu, Foshan, CN;
Xingyu Wu, Foshan, CN;
Dingshan Ruan, Foshan, CN;
Yong Cai, Foshan, CN;
GUANGDONG BRUNP RECYCLING TECHNOLOGY CO., LTD., Foshan, CN;
HUNAN BRUNP RECYCLING TECHNOLOGY CO., LTD., Changsha, CN;
HUNAN BRUNP EV RECYCLING CO., LTD., Changsha, CN;
Abstract
Disclosed in the present invention is a method for surface modification of a lithium transition metal oxide positive electrode material, including: adding a first additive, a second additive, and a lithium transition metal oxide to water to obtain a first slurry, the first additive being a lithium-containing phosphate, and the second additive being an acidic solution of a Yor Alsalt; dropwise adding a third additive to the first slurry to obtain a second slurry, the third additive being an acidic solution of a TiOor ZrOsalt; dropwise adding a fourth additive to the second slurry to obtain a third slurry, the fourth additive being an acidic solution of a AlOsalt; and performing centrifugation and drying on the third slurry to obtain an intermediate product, mixing the intermediate product with a large-particle positive electrode material, and performing sintering to obtain a surface-modified lithium transition metal oxide material.