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:
Aug. 25, 2026
Filed:
Nov. 07, 2022
Samsung Sdi Co., Ltd., Yongin-si, KR;
Youngki Kim, Yongin-si, KR;
Yongmok Cho, Yongin-si, KR;
Sungho Choo, Yongin-si, KR;
Sangmi Kim, Yongin-si, KR;
Minjae Choi, Yongin-si, KR;
Jaeyoung Jeong, Yongin-si, KR;
Hyunjei Chung, Yongin-si, KR;
SAMSUNG SDI CO., LTD., Gyeonggi-Do, KR;
Abstract
A composite positive electrode active material for a lithium secondary battery, the composite positive electrode active material including: a lithium cobalt oxide particle; and a particle coating portion in a form of an island and on a first surface of the lithium cobalt oxide particle, the particle coating portion including a first coating layer including a lithium titanium oxide, wherein the lithium cobalt oxide particle includes a lithium-deficient cobalt oxide phase positioned between the particle coating portion and a core of the lithium cobalt oxide particle, the lithium-deficient cobalt oxide phase having a molar ratio of lithium to cobalt of about 0.9 or less, and a surface coating portion located between a second surface of the lithium cobalt oxide particle and the core of the lithium cobalt oxide particle.