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:
Sep. 15, 2026
Filed:
Oct. 26, 2021
Samsung Sdi Co., Ltd., Yongin-si, KR;
Kiyong Ahn, Yongin-si, KR;
Taehee Kwak, Yongin-si, KR;
Minkyu Kim, Yongin-si, KR;
Naoyuki Hase, Yongin-si, KR;
Jeuk Ha, Yongin-si, KR;
Seonyoung Kwon, Yongin-si, KR;
Yumi Song, Yongin-si, KR;
Eunok Oh, Yongin-si, KR;
Samsung SDI Co., Ltd., Yongin-si, KR;
Abstract
A nickel-based active material, a positive electrode including the same, and a lithium secondary battery including the positive electrode, a negative electrode, and an electrolyte between the positive electrode and the negative electrode are provided. The nickel-based active material includes 80 mol % or more of nickel with respect to the metal elements excluding lithium, and the nickel-based active material includes: i) large secondary particles having a size in a range of 10 μm to 20 μm and including aggregates of primary particles having a size of 1 μm or less; ii) large crystal particles including primary particles having a size in a range of 1 μm to 5 μm; and iii) small secondary particles having a size in a range of 1 μm to 7 μm and including aggregates of primary particles having a size of 1 μm or less.