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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 10483525 B1

PDFFull Text
Date of Patent:
Nov. 19, 2019

Filed:

Mar. 09, 2016

Non-aqueous electrolyte secondary battery

Applicant:

Sanyo Electric Co., Ltd., Daito-shi, Osaka, JP;

Inventors:

Shinji Kasamatsu, Tokushima, JP;

Na Wang, Osaka, JP;

Assignee:

SANYO Electric Co., Ltd., Daito-shi, JP;

Attorney:

Westerman, Hattori, Daniels & Adrian, LLP

Primary Examiner:

Amanda C Walke

Int. Cl.
CPC ...
H01M 4/13 (2010.01); H01M 4/134 (2010.01); H01M 4/60 (2006.01); H01M 4/583 (2010.01); H01M 4/62 (2006.01); H01M 4/133 (2010.01); H01M 4/36 (2006.01); C08F 220/56 (2006.01); C08K 3/04 (2006.01); C08K 3/36 (2006.01); H01M 4/38 (2006.01); H01M 4/02 (2006.01); H01M 10/052 (2010.01);
U.S. Cl.
CPC ...
H01M 4/134 (2013.01); C08F 220/56 (2013.01); C08K 3/04 (2013.01); C08K 3/36 (2013.01); H01M 4/13 (2013.01); H01M 4/133 (2013.01); H01M 4/36 (2013.01); H01M 4/386 (2013.01); H01M 4/583 (2013.01); H01M 4/602 (2013.01); H01M 4/62 (2013.01); H01M 4/621 (2013.01); H01M 4/622 (2013.01); C08K 2201/001 (2013.01); H01M 10/052 (2013.01); H01M 2004/027 (2013.01);
Abstract

A non-aqueous electrolyte secondary battery having a long cycle life and generates a small amount of gas during, for example, storage in a charged state. A negative electrode in a non-aqueous electrolyte secondary battery according to an exemplary embodiment includes a negative electrode current collector and a negative electrode mixture layer formed on the negative electrode current collector. The negative electrode mixture layer contains a water-soluble polymer and a negative electrode active material containing a silicon-based active material. The water-soluble polymer contains 0.30 mol/100 g or more and 0.40 mol/100 g or less of an acrylic acid monomer unit and 10mol/100 g or more and 10mol/100 g or less of a tetrafunctional (meth)acrylate monomer unit. An aqueous solution containing 1% by mass of the polymer in terms of solid content has a viscosity of 0.05 Pa·s or higher and 0.70 Pa·s or lower.

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