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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 9768447 B1

PDFFull Text
Date of Patent:
Sep. 19, 2017

Filed:

May. 30, 2014

Negative electrode material for lithium ion secondary battery

Applicant:

Showa Denko K.k., Tokyo, JP;

Inventors:

Takeshi Nakamura, Tokyo, JP;

Nobuaki Ishii, Tokyo, JP;

Yuta Hirano, Tokyo, JP;

Assignee:

SHOWA DENKO K.K., Tokyo, JP;

Attorney:

Sughrue Mion, PLLC

Primary Examiner:

Olatunji Godo

Int. Cl.
CPC ...
H01M 4/133 (2010.01); H01M 4/587 (2010.01); H01M 4/1393 (2010.01); H01M 4/38 (2006.01); H01M 4/134 (2010.01); H01M 4/1395 (2010.01); H01M 4/36 (2006.01); H01M 4/46 (2006.01); H01M 4/62 (2006.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/587 (2013.01); H01M 4/133 (2013.01); H01M 4/134 (2013.01); H01M 4/1393 (2013.01); H01M 4/1395 (2013.01); H01M 4/362 (2013.01); H01M 4/38 (2013.01); H01M 4/386 (2013.01); H01M 4/387 (2013.01); H01M 4/463 (2013.01); H01M 4/625 (2013.01); H01M 10/0525 (2013.01); H01M 2004/027 (2013.01);
Abstract

A method for producing a negative electrode material for lithium ion secondary battery which includes: pressing a mixed liquid comprising particles (B) containing an element capable of occluding/releasing lithium ions, carbon nanotubes (C) of which not less than 95% by number have a fiber diameter of not less than 5 nm and not more than 40 nm, and water into a pulverizing nozzle of a high-pressure dispersing device to obtain a paste or slurry; drying the paste or slurry into a powder; and mixing the powder and carbon particles (A). A negative electrode material for lithium ion secondary battery including carbon particles (A); and flocculates in which particles (B) containing an element capable of occluding/releasing lithium ions and carbon nanotubes (C) of which not less than 95% by number has a fiber diameter of not less than 5 nm and not more than 40 nm are uniformly composited.

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