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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 10522835 B1

PDFFull Text
Date of Patent:
Dec. 31, 2019

Filed:

Aug. 26, 2016

Binder composition for positive electrodes, slurry for positive electrodes, positive electrode and lithium ion secondary battery

Applicant:

Denka Company Limited, Tokyo, JP;

Inventors:

Takuya Narutomi, Tokyo, JP;

Jun Watanabe, Tokyo, JP;

Shigeru Suzuki, Tokyo, JP;

Assignee:

DENKA COMPANY LIMITED, Tokyo, JP;

Attorney:

Stein IP, LLC

Primary Examiner:

Jane J Rhee

Int. Cl.
CPC ...
H01M 4/13 (2010.01); H01M 4/62 (2006.01); C08F 261/04 (2006.01); H01M 4/131 (2010.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); C08K 3/04 (2006.01); H01M 10/0525 (2010.01); H01M 4/66 (2006.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/622 (2013.01); C08F 261/04 (2013.01); C08K 3/04 (2013.01); H01M 4/131 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 4/625 (2013.01); H01M 10/0525 (2013.01); C08K 2201/001 (2013.01); H01M 4/661 (2013.01); H01M 2004/028 (2013.01);
Abstract

A binder composition for positive electrode with superior oxidation resistance is provided. A slurry for positive electrode, a positive electrode, and a lithium ion secondary battery manufactured by using the binder composition is provided. A binder composition for positive electrode including a graft copolymer in which a monomer containing acrylonitrile as a main component is graft copolymerized with polyvinyl alcohol having an average degree of polymerization of 300 to 3000 and a saponification degree of 70 to 100 mol %, is provided. Further, a slurry for positive electrode includes the binder composition for positive electrode, a positive electrode active material, and a conductive assistant. In addition, a lithium ion secondary battery is manufactured using a positive electrode made with the slurry for positive electrode and a positive electrode.

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