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:
Feb. 10, 2026
Filed:
Jul. 24, 2018
Samsung Sdi Co., Ltd., Yongin-si, KR;
Minhan Kim, Yongin-si, KR;
Dongjin Kim, Yongin-si, KR;
Ilseok Kim, Yongin-si, KR;
Dohyung Park, Yongin-si, KR;
Junseok Park, Yongin-si, KR;
Daehoe Lee, Yongin-si, KR;
Okgyu Lim, Yongin-si, KR;
Gyuran Jeon, Yongin-si, KR;
Jeonjin Choi, Yongin-si, KR;
Samsung SDI Co., Ltd., Yongin-si, KR;
Abstract
A positive active material for a rechargeable lithium battery includes a core including a compound represented by Chemical Formula 1 and a functional layer on a surface of the core. The functional layer has one kind of a crystal structure that is different from the crystal structure of the core. The positive active material includes about 100 ppm to about 400 ppm of sulfur:LiNiCoMeO, Chemical Formula 1wherein in Chemical Formula 1, 0.9≤a≤1.1, 0.5≤x≤0.93, 0<y≤0.3, 0<z≤0.3, x+y+z=1, and Me is Mn or Al.