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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 10700346 B1

PDFFull Text
Date of Patent:
Jun. 30, 2020

Filed:

Mar. 24, 2017

Negative electrode and method for manufacturing same

Applicant:

Lg Chem, Ltd., Seoul, KR;

Inventors:

Jin Ho Yang, Daejeon, KR;

Song Taek Oh, Daejeon, KR;

Young Geun Choi, Daejeon, KR;

Assignee:

LG Chem, Ltd., , KR;

Attorney:

Lerner, David, Littenberg, Krumholz & Mentlik, LLP

Primary Examiner:

James M Erwin

Int. Cl.
CPC ...
H01M 4/36 (2006.01); H01M 4/04 (2006.01); H01M 4/38 (2006.01); H01M 4/134 (2010.01); H01M 4/62 (2006.01); H01M 4/133 (2010.01); H01M 4/1393 (2010.01); H01M 4/587 (2010.01); H01M 4/1395 (2010.01); B60L 50/50 (2019.01); H01M 4/583 (2010.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01); H01M 10/052 (2010.01);
U.S. Cl.
CPC ...
H01M 4/366 (2013.01); B60L 50/50 (2019.02); H01M 4/0404 (2013.01); H01M 4/0428 (2013.01); H01M 4/133 (2013.01); H01M 4/134 (2013.01); H01M 4/1393 (2013.01); H01M 4/1395 (2013.01); H01M 4/386 (2013.01); H01M 4/583 (2013.01); H01M 4/587 (2013.01); H01M 4/62 (2013.01); H01M 4/623 (2013.01); H01M 10/0525 (2013.01); H01M 10/052 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01); H01M 2220/20 (2013.01); Y02E 60/122 (2013.01);
Abstract

The present invention relates to a negative electrode and a method for manufacturing the same. Specifically, the present invention provides a negative electrode comprising a current collector, a first active material layer formed on the current collector, and a second active material layer formed on the first active material layer, wherein the first active material layer comprises carbon-based negative electrode active material particles, and the second active material layer comprises silicon nitride. The negative electrode according to the present invention comprises a second active material layer comprising silicon nitride on a first active material layer. Nitrogen of the silicon nitride may react with lithium ions to form lithium nitride.

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