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:
Jan. 16, 2018
Filed:
Sep. 05, 2014
Samsung Sdi Co., Ltd., Yongin-si, Gyeonggi-do, KR;
Se Won Kim, Seoul, KR;
Jong Seok Moon, Chungcheongnam-do, KR;
Jae Ha Shim, Gyeonggi-do, KR;
Tae Hwan Yu, Seoul, KR;
SAMSUNG SDI CO., LTD., Yongin-Si, Gyeonggi-Do, KR;
Abstract
Provided are a cathode active material for a lithium secondary battery, a method of fabricating the same, and a lithium secondary battery including the same. The cathode active material includes a lithium composite transition metal oxide represented by LiNiCoMnOF(0.1≦c−a≦0.4, 0.13≦a≦0.3, 0.03≦b≦0.2, 0.4≦c≦0.6, (a+b+c)+(1+(c−a)/2)=2, 0<x≦0.15, 1≦a/b≦6, 1.9≦c/a≦4.0, and 0.04≦b/(a+b+c)≦0.25), and layer-structured LiMnO. Since the lithium secondary battery including the cathode active material has a large capacity and generates less gas, lifespan characteristics and high rate capability are significantly improved, and especially voltage variation during charging and discharging operations is small.