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.:
Date of Patent:
Jul. 12, 2016
Filed:
Apr. 21, 2011
Applicants:
Kazuya Iwamoto, Osaka, JP;
Kunihiko Mineya, Osaka, JP;
Shuji Ito, Nara, JP;
Inventors:
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 4/134 (2010.01); H01M 4/36 (2006.01); H01M 4/70 (2006.01); H01M 4/1395 (2010.01); H01M 4/66 (2006.01); H01M 10/052 (2010.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/134 (2013.01); H01M 4/366 (2013.01); H01M 4/667 (2013.01); H01M 4/70 (2013.01); H01M 4/1395 (2013.01); H01M 4/661 (2013.01); H01M 10/052 (2013.01); H01M 2004/025 (2013.01); Y02E 60/122 (2013.01); Y02P 70/54 (2015.11);
Abstract
A negative electrode for a lithium ion batteryincludes a negative electrode current collector, a negative electrode active material layer, and a lithium silicate layer. The negative electrode active material layercontains silicon. The lithium silicate layercontains lithium, oxygen, and silicon forming a Li—O—Si bond, and is formed at the interface between the negative electrode current collectorand the negative electrode active material layer. The negative electrode active material layerand the lithium silicate layermay be composed of columnar bodies.