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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 12562377 B1

PDFFull Text
Date of Patent:
Feb. 24, 2026

Filed:

Jul. 23, 2020

Composite negative electrode active material, method of preparing the same, negative electrode and secondary battery comprising the same

Applicant:

Lg Energy Solution, Ltd., Seoul, KR;

Inventors:

Il Geun Oh, Daejeon, KR;

Yong Ju Lee, Daejeon, KR;

Je Young Kim, Daejeon, KR;

Jung Woo Yoo, Daejeon, KR;

Ye Lin Kim, Daejeon, KR;

Tae Gon Kim, Daejeon, KR;

Assignee:

LG ENERGY SOLUTION, LTD., Seoul, KR;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Raymond Alejandro

Int. Cl.
CPC ...
H01M 4/36 (2006.01); H01M 4/04 (2006.01); H01M 4/485 (2010.01); H01M 4/583 (2010.01); H01M 10/0525 (2010.01); H01M 50/46 (2021.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/366 (2013.01); H01M 4/0404 (2013.01); H01M 4/0471 (2013.01); H01M 4/485 (2013.01); H01M 4/583 (2013.01); H01M 10/0525 (2013.01); H01M 50/46 (2021.01); H01M 2004/027 (2013.01);
Abstract

Disclosed is a composite negative electrode active material comprising silicon-based core particles, an outer carbon coating layer present on the silicon-based core particles, and single-walled carbon nanotubes, wherein the single-walled carbon nanotubes are in contact with the outer carbon coating layer and comprise a body partially spaced apart from the outer carbon coating layer, and the outer carbon coating layer comprises oxygen in an amount of 35 wt % to 55 wt % therein.

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Oh, Il. (2026). Composite negative electrode active material, method of preparing the same, negative electrode and secondary battery comprising the same (U.S. Patent No. 12562377). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12562377

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