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. 26, 2025
Filed:
Oct. 27, 2021
SK Innovation Co., Ltd., Seoul, KR;
Mi Jung Noh, Daejeon, KR;
Jik Soo Kim, Daejeon, KR;
Jae Ho Choi, Daejeon, KR;
Tae Kyoung Lee, Daejeon, KR;
Sang Bok Kim, Daejeon, KR;
Sang Min Park, Daejeon, KR;
SK ON CO., LTD., Seoul, KR;
Abstract
A cathode active material for a lithium secondary battery according to embodiments of the present invention has a high-nickel composition and includes a lithium-nickel composite metal oxide particle in which lithium, nickel and a metal having an oxidation number of +2 are combined in a predetermined range. A cation disorder caused when a nickel ion is present at a lithium-ion site is reduced to improve structural stability of the cathode active material. An initial capacity and a battery efficiency of a lithium secondary battery can be improved using the cathode active material.