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. 05, 2023
Filed:
Aug. 05, 2021
Applicant:
SK Innovation Co., Ltd., Seoul, KR;
Inventors:
Hae Suk Hwang, Daejeon, KR;
Hee Gyoung Kang, Daejeon, KR;
Hyo Sang Kim, Daejeon, KR;
So Hyun Park, Daejeon, KR;
Jong Hyuk Lee, Daejeon, KR;
Assignee:
SK ON CO., LTD., Seoul, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 4/00 (2006.01); H01M 4/583 (2010.01); H01M 4/133 (2010.01); H01M 4/66 (2006.01); H01M 4/62 (2006.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/583 (2013.01); H01M 4/133 (2013.01); H01M 4/623 (2013.01); H01M 4/662 (2013.01); H01M 10/0525 (2013.01); H01M 2004/021 (2013.01);
Abstract
An anode active material according to an embodiment of the present invention includes a first graphite particle and a second graphite particle having a different particle diameter from that of the first graphite particle. A ratio of a pellet density relative to a. tap density of the anode active material is from 1.3 to 1.45. A particle deformation of the anode is suppressed to achieve a lithium secondary battery having improved long-term and high-energy properties.