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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 12626909 B1

PDFFull Text
Date of Patent:
May. 12, 2026

Filed:

Jul. 12, 2022

Negative electrode active material, negative electrode including same, secondary battery including same, and method for manufacturing negative electrode active material

Applicant:

Lg Energy Solution, Ltd., Seoul, KR;

Inventors:

Ilgeun Oh, Daejeon, KR;

Semi Park, Daejeon, KR;

Sun Young Shin, Daejeon, KR;

Yong Ju Lee, Daejeon, KR;

Assignee:

LG ENERGY SOLUTION, LTD., Seoul, KR;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Haroon S Sheikh

Int. Cl.
CPC ...
H01M 4/36 (2006.01); H01M 4/02 (2006.01); H01M 4/38 (2006.01); H01M 4/58 (2010.01); H01M 4/583 (2010.01);
U.S. Cl.
CPC ...
H01M 4/366 (2013.01); H01M 4/386 (2013.01); H01M 4/582 (2013.01); H01M 4/583 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01);
Abstract

A negative electrode active material, a negative electrode including silicon-containing particles comprising SiO, wherein 0<x<2, and a Li compound, and a carbon layer present on at least a part of a surface of the silicon-containing particles; and a layer comprising LiF present on at least a part of the silicon-containing particles having the carbon layer. During analysis by X-ray photoelectron spectroscopy (XPS), an atomic ratio (F/O ratio) of F relative to O is 0.45 or more and an atomic ratio (F/C ratio) of F relative to C is 0.5 or less.

Find Patent Forward Citations

Oh, Ilgeun. (2026). Negative electrode active material, negative electrode including same, secondary battery including same, and method for manufacturing negative electrode active material (U.S. Patent No. 12626909). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12626909

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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