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. 03, 2025
Filed:
Mar. 13, 2024
Samsung Sdi Co., Ltd., Yongin-si, KR;
Jungsue Jang, Yongin-si, KR;
Donghyun Kil, Yongin-si, KR;
Minhan Kim, Yongin-si, KR;
Jinyoung Kim, Yongin-si, KR;
Jinhwa Kim, Yongin-si, KR;
Jihyun Seog, Yongin-si, KR;
Jaeha Shim, Yongin-si, KR;
Kiyong Ahn, Yongin-si, KR;
Donggyu Chang, Yongin-si, KR;
Youngjoo Chae, Yongin-si, KR;
Aram Choi, Yongin-si, KR;
Jeuk Ha, Yongin-si, KR;
Samsung SDI Co., Ltd., Yongin-si, KR;
Abstract
Disclosed are a positive active material for a rechargeable lithium battery, a method of preparing the same, and a rechargeable lithium battery including the same. The positive active material includes a first positive active material in a form of secondary particles including a plurality of primary particles that are aggregated together, and a second positive active material having a single particle form, wherein both of the first positive active material and the second positive active material are nickel-based positive active materials, each of the first positive active material and the second positive active material is coated with cobalt, and a maximum roughness of a surface of the second positive active material is greater than or equal to about 15 nm.