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:
Aug. 17, 2021
Filed:
Jul. 14, 2017
Applicant:
Lg Chem, Ltd., Seoul, KR;
Inventors:
Jung Pil Lee, Daejeon, KR;
Hee Won Lee, Daejeon, KR;
Assignee:
LG Chem, Ltd., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/583 (2010.01); H01M 4/13 (2010.01); H01M 4/36 (2006.01); H01M 4/139 (2010.01); H01M 4/62 (2006.01); H01M 4/04 (2006.01); H01M 4/1391 (2010.01); H01M 50/44 (2021.01); H01M 50/411 (2021.01); H01M 10/052 (2010.01); H01M 10/0569 (2010.01); H01M 10/44 (2006.01); H01M 4/02 (2006.01); H01M 4/587 (2010.01); H01M 4/485 (2010.01); H01M 4/505 (2010.01); H01M 4/66 (2006.01);
U.S. Cl.
CPC ...
H01M 4/583 (2013.01); H01M 4/0404 (2013.01); H01M 4/13 (2013.01); H01M 4/139 (2013.01); H01M 4/1391 (2013.01); H01M 4/366 (2013.01); H01M 4/622 (2013.01); H01M 4/623 (2013.01); H01M 10/052 (2013.01); H01M 10/0569 (2013.01); H01M 10/44 (2013.01); H01M 50/411 (2021.01); H01M 50/44 (2021.01); H01M 4/485 (2013.01); H01M 4/505 (2013.01); H01M 4/587 (2013.01); H01M 4/661 (2013.01); H01M 2004/027 (2013.01);
Abstract
The present invention relates to a negative electrode and a secondary battery including the same, and particularly, to a negative electrode which includes a current collector; a first active material layer disposed on the current collector and including at least one concave portion exposing a portion of the current collector; a stress-relaxing portion disposed in the concave portion; and a second active material layer disposed on the first active material layer and the stress-relaxing portion and separated from the current collector, and a secondary battery including the same.