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:
Oct. 31, 2017
Filed:
May. 08, 2015
Samsung Sdi Co., Ltd., Yongin-si, Gyeonggi-do, KR;
Daehoe Lee, Yongin-si, KR;
Sangwoo Cho, Yongin-si, KR;
Sooyoun Park, Yongin-si, KR;
Changwook Kim, Yongin-si, KR;
Dohyung Park, Yongin-si, KR;
Samsung SDI Co., Ltd., Yongin-si, Gyeonggi-do, KR;
Abstract
Provided are a positive active material, a positive electrode including the same, and a lithium secondary battery including the positive electrode. The positive active material includes lithium cobalt oxide containing a metal element, and the lithium cobalt oxide containing a metal element has a ratio of a peak intensity of the O3 phase to a peak intensity of the H1-3 phase, I/I, that is greater than 1 in a X-ray diffraction (XRD) analysis spectrum using Cu-Kα radiation. Accordingly, a lithium secondary battery including the positive active material may have improved lifespan characteristics even at a high voltage.