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:
Jun. 16, 2026
Filed:
Apr. 25, 2023
SK on Co., Ltd., Seoul, KR;
SK Innovation Co., Ltd., Seoul, KR;
Ji Yae Do, Daejeon, KR;
Jeong Bae Yoon, Daejeon, KR;
Min Suk Kang, Daejeon, KR;
Hee Jun Kweon, Daejeon, KR;
Sang Bok Kim, Daejeon, KR;
Yong Hyun Cho, Daejeon, KR;
Dong Wook Ha, Daejeon, KR;
SK On Co., Ltd., Seoul, KR;
SK INNOVATION CO., LTD., Seoul, KR;
Abstract
A cathode active material for a lithium secondary battery according to an embodiment of the present invention includes a lithium-transition metal oxide particle. The lithium-transition metal oxide particle has a FWHM ratio measured by an in-situ X-ray Diffraction spectroscopy (XRD) and defined by Equation 1 of 400% or less. Life-span properties of a lithium secondary battery can be improved by preventing deformation of a lattice structure and/or a crystal structure in the lithium-transition metal composite oxide particles.