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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.:

US 12620626 B1

PDFFull Text
Date of Patent:
May. 05, 2026

Filed:

Feb. 03, 2023

Lithium secondary battery

Applicant:

Lg Energy Solution, Ltd., Seoul, KR;

Inventors:

Jung Min Lee, Daejeon, KR;

Jung Gu Han, Daejeon, KR;

Su Hyeon Ji, Daejeon, KR;

Chul Eun Yeom, Daejeon, KR;

Chul Haeng Lee, Daejeon, KR;

Kyung Mi Lee, Daejeon, KR;

Assignee:

LG Energy Solution, Ltd., Seoul, KR;

Attorney:

Lerner David LLP

Primary Examiner:

Michael L Dignan

Int. Cl.
CPC ...
H01M 10/0567 (2010.01); H01M 4/36 (2006.01); H01M 4/38 (2006.01); H01M 4/48 (2010.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 4/583 (2010.01); H01M 4/587 (2010.01); H01M 10/052 (2010.01); H01M 10/0568 (2010.01); H01M 10/0569 (2010.01); H01M 4/02 (2006.01); H01M 4/86 (2006.01);
U.S. Cl.
CPC ...
H01M 10/0567 (2013.01); H01M 4/362 (2013.01); H01M 4/364 (2013.01); H01M 4/386 (2013.01); H01M 4/483 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 4/583 (2013.01); H01M 4/587 (2013.01); H01M 10/052 (2013.01); H01M 10/0568 (2013.01); H01M 10/0569 (2013.01); H01M 2004/027 (2013.01); H01M 2004/028 (2013.01); H01M 2004/8684 (2013.01); H01M 2004/8689 (2013.01); H01M 2300/0025 (2013.01); H01M 2300/0028 (2013.01);
Abstract

The present disclosure relates to a lithium secondary battery comprising a positive electrode including a positive electrode active material, a negative electrode including a negative electrode active material, and a non-aqueous electrolyte. The non-aqueous electrolyte includes an organic solvent, a lithium salt, a coumarin-based compound represented by [Chemical Formula 1], and a halogen-substituted cyclic carbonate, and the positive electrode active material includes a lithium manganese-rich oxide represented by [Chemical Formula 2].

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