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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 9666858 B1

PDFFull Text
Date of Patent:
May. 30, 2017

Filed:

May. 25, 2011

Negative electrode for secondary battery, and process for production thereof

Applicants:

Kenji Ohara, Yokohama, JP;

Sohei Suga, Yokohama, JP;

Yasuo Ohta, Yokohama, JP;

Tomoya Kubota, Yokohama, JP;

Kazuyuki Sakamoto, Hiratsuka, JP;

Takaaki Abe, Yokohama, JP;

Satoru Ichikawa, Yokosuka, JP;

Kenji Hosaka, Yokohama, JP;

Kosuke Hagiyama, Yokohama, JP;

Hiroshi Miyakubo, Yokosuka, JP;

Inventors:

Kenji Ohara, Yokohama, JP;

Sohei Suga, Yokohama, JP;

Yasuo Ohta, Yokohama, JP;

Tomoya Kubota, Yokohama, JP;

Kazuyuki Sakamoto, Hiratsuka, JP;

Takaaki Abe, Yokohama, JP;

Satoru Ichikawa, Yokosuka, JP;

Kenji Hosaka, Yokohama, JP;

Kosuke Hagiyama, Yokohama, JP;

Hiroshi Miyakubo, Yokosuka, JP;

Assignee:

NISSAN MOTOR CO., LTD., Yokohama-shi, JP;

Attorney:

Foley & Lardner LLP

Primary Examiner:

Patrick Ryan

Assistant Examiner:

Christopher Domone

Int. Cl.
CPC ...
H01M 4/133 (2010.01); H01M 4/62 (2006.01); H01M 4/1393 (2010.01); H01M 4/64 (2006.01); H01M 4/04 (2006.01); H01M 4/587 (2010.01); H01M 4/66 (2006.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/133 (2013.01); H01M 4/0404 (2013.01); H01M 4/1393 (2013.01); H01M 4/587 (2013.01); H01M 4/62 (2013.01); H01M 4/621 (2013.01); H01M 4/64 (2013.01); H01M 4/668 (2013.01); H01M 4/02 (2013.01); Y02P 70/54 (2015.11); Y10T 29/49115 (2015.01);
Abstract

A negative electrode for a secondary battery according to the present invention has a collector and a negative electrode active material layer formed on a surface of the collector and containing negative electrode active material particles. In the negative electrode active material layer, an insulating material is arranged between the negative electrode active material particles so as not to develop conductivity by a percolation path throughout the negative electrode active material layer. It is possible in this configuration to effectively prevent the occurrence of a short-circuit current due to an internal short circuit and the generation of heat due to such short-circuit current flow in the secondary battery while securing the battery performance of the secondary battery.

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