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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 12643793 B1

PDFFull Text
Date of Patent:
Jun. 02, 2026

Filed:

Oct. 11, 2024

Silicon carbon composite, negative electrode active material, negative electrode composition, negative electrode, and lithium secondary battery

Applicant:

Lg Energy Solution, Ltd., Seoul, KR;

Inventors:

Seunggwan Lee, Daejeon, KR;

Taeho Kim, Daejeon, KR;

Gunwoo Kim, Daejeon, KR;

Sun Young Shin, Daejeon, KR;

Yong Ju Lee, Daejeon, KR;

Assignee:

LG Energy Solution, Ltd., Seoul, KR;

Attorney:

Bryan Cave Leighton Paisner LLP

Primary Examiner:

Sarah A Slifka

Int. Cl.
CPC ...
C01B 33/00 (2006.01); C01B 32/05 (2017.01); C01B 32/97 (2017.01); H01M 4/02 (2006.01); H01M 4/04 (2006.01); H01M 4/36 (2006.01); H01M 4/38 (2006.01); H01M 4/583 (2010.01); H01M 4/587 (2010.01); H01M 10/052 (2010.01); H01M 10/0525 (2010.01);
U.S. Cl.
CPC ...
C01B 33/00 (2013.01); C01B 32/05 (2017.08); C01B 32/97 (2017.08); H01M 4/0471 (2013.01); H01M 4/366 (2013.01); H01M 4/386 (2013.01); H01M 4/583 (2013.01); H01M 4/587 (2013.01); H01M 10/052 (2013.01); H01M 10/0525 (2013.01); C01P 2002/86 (2013.01); C01P 2002/89 (2013.01); C01P 2004/80 (2013.01); C01P 2006/12 (2013.01); C01P 2006/14 (2013.01); C01P 2006/16 (2013.01); C01P 2006/40 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01); H01M 2220/30 (2013.01);
Abstract

A silicon carbon composite, a negative electrode active material, a negative electrode composition, a negative electrode, a lithium secondary battery, a battery module, and a battery pack are provided. The silicon carbon composite satisfies a condition of 1.3≤((B+C)/A)<4, wherein A is an intensity of a peak having a chemical shift value in the range of 20 ppm to −15 ppm in aSi-MAS-NMR spectrum, B is an intensity of a peak having a chemical shift value in the range of −20 ppm to −100 ppm in theSi-MAS-NMR spectrum; and C is an intensity of a peak having a chemical shift value in the range of −110 ppm to −140 ppm in theSi-MAS-NMR spectrum.

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