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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 11424439 B1

PDFFull Text
Date of Patent:
Aug. 23, 2022

Filed:

Oct. 17, 2017

Negative electrode of nonaqueous electrolyte secondary battery, and nonaqueous electrolyte secondary battery

Applicant:

Dai-ichi Kogyo Seiyaku Co., Ltd., Kyoto, JP;

Inventors:

Shiho Nakamura, Kyoto, JP;

Atsushi Sanuki, Kyoto, JP;

Assignee:

DAI-ICHI KOGYO SEIYAKU CO., LTD., Kyoto, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Nathanael T Zemui

Int. Cl.
CPC ...
H01M 4/133 (2010.01); H01M 4/134 (2010.01); H01M 4/1393 (2010.01); H01M 4/1395 (2010.01); H01M 10/0525 (2010.01); C08L 1/26 (2006.01); H01M 4/131 (2010.01); C08K 3/34 (2006.01); C08K 3/04 (2006.01); H01M 4/36 (2006.01); H01M 4/48 (2010.01); H01M 4/62 (2006.01); C08B 11/12 (2006.01); C08L 1/28 (2006.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/133 (2013.01); C08K 3/04 (2013.01); C08K 3/34 (2013.01); C08L 1/26 (2013.01); H01M 4/131 (2013.01); H01M 4/134 (2013.01); H01M 4/1393 (2013.01); H01M 4/1395 (2013.01); H01M 4/36 (2013.01); H01M 4/48 (2013.01); H01M 4/62 (2013.01); H01M 10/0525 (2013.01); C08B 11/12 (2013.01); C08L 1/286 (2013.01); H01M 2004/021 (2013.01);
Abstract

A negative electrode of a nonaqueous electrolyte secondary battery, which is provided with a collector and a negative electrode active material layer that is formed on the collector, and which is characterized in that: the negative electrode active material layer contains a carbon-based negative electrode active material, a silicon-based negative electrode active material, a conductive agent and a predetermined carboxy methylcellulose or a salt thereof; the content of the carboxy methylcellulose or a salt thereof is from 4% by mass to 15% by mass (inclusive) relative to the total mass of the negative electrode active material layer; and the content of the silicon-based negative electrode active material relative to the total content of the carbon-based negative electrode active material and the silicon-based negative electrode active material is from 3% by mass to 19% by mass (inclusive).

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