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. 13, 2026
Filed:
Apr. 17, 2023
Anode active material for lithium secondary battery and lithium secondary battery including the same
Applicants:
SK on Co., Ltd., Seoul, KR;
SK Innovation Co., Ltd., Seoul, KR;
Inventors:
Young Mo Yang, Daejeon, KR;
Joon Hyung Moon, Daejeon, KR;
Do Ae Yu, Daejeon, KR;
Ju Ho Chung, Daejeon, KR;
Jae Young Choi, Daejeon, KR;
Assignees:
SK ON CO., LTD., Seoul, KR;
SK INNOVATION CO., LTD., Seoul, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 4/36 (2006.01); H01M 4/02 (2006.01); H01M 4/38 (2006.01); H01M 4/485 (2010.01); H01M 4/583 (2010.01);
U.S. Cl.
CPC ...
H01M 4/366 (2013.01); H01M 4/386 (2013.01); H01M 4/485 (2013.01); H01M 4/583 (2013.01); H01M 2004/027 (2013.01);
Abstract
An anode active material for a secondary battery includes a plurality of composite particles. The composite particles include carbon-based particles containing pores therein. A silicon-containing coating layer is formed inside the pores or on a surface of the carbon-based particles. A surface oxide layer is formed on the silicon-containing coating layer. The surface oxide layer contains silicon oxide. A silicon oxidation number ratio of the composite particle is predefined.