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:
Dec. 30, 2025
Filed:
Mar. 28, 2019
Applicant:
SK Innovation Co., Ltd., Seoul, KR;
Inventors:
Mi Jung Noh, Daejeon, KR;
Jik Soo Kim, Daejeon, KR;
Sang Bok Kim, Daejeon, KR;
Dong Wook Ha, Daejeon, KR;
Assignee:
SK On Co., Ltd., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/525 (2010.01); C01G 53/50 (2025.01); C01G 53/82 (2025.01); H01M 4/505 (2010.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/525 (2013.01); C01G 53/50 (2013.01); C01G 53/82 (2025.01); H01M 4/505 (2013.01); H01M 10/0525 (2013.01); C01P 2002/74 (2013.01); H01M 2004/021 (2013.01); H01M 2004/028 (2013.01);
Abstract
A cathode active material precursor according to embodiments of the present invention includes nickel (Ni) and cobalt (Co) and includes an excess amount of Ni. A/Ais 1 or more and I/Iis 1 or more. Ais a peak area of (101) plane, and Ais a peak area of (001) plane by an X-ray diffraction (XRD) analysis, and Iis a peak intensity of (101) plane, and Iis a peak intensity of (001) plane by the XRD analysis. A cathode and a lithium secondary battery having improved crystallinity and long-term stability using the cathode active material precursor.