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:
Nov. 01, 2016
Filed:
Dec. 09, 2013
Applicant:
Shin-etsu Chemical Co., Ltd., Tokyo, JP;
Inventors:
Hirofumi Fukuoka, Annaka, JP;
Mitsugu Saito, Annaka, JP;
Susumu Ueno, Annaka, JP;
Tetsuya Inukai, Annaka, JP;
Assignee:
SHIN-ETSU CHEMICAL CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/134 (2010.01); H01G 11/50 (2013.01); H01M 4/52 (2010.01); H01M 4/48 (2010.01); C01B 33/18 (2006.01); H01G 11/04 (2013.01); H01G 11/46 (2013.01); H01M 4/131 (2010.01);
U.S. Cl.
CPC ...
H01G 11/50 (2013.01); C01B 33/18 (2013.01); H01G 11/04 (2013.01); H01G 11/46 (2013.01); H01M 4/134 (2013.01); H01M 4/483 (2013.01); H01M 4/52 (2013.01); C01P 2004/61 (2013.01); C01P 2004/62 (2013.01); H01M 4/131 (2013.01); Y02E 60/13 (2013.01);
Abstract
A silicon oxide material having a cobalt content of 2-200 ppm is provided. A negative electrode is formed using the silicon oxide material as active material. A nonaqueous electrolyte secondary battery constructed using the negative electrode exhibits improved cycle performance while maintaining the high battery capacity and low volume expansion of silicon oxide.