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:
Sep. 22, 2015
Filed:
Aug. 25, 2009
Applicants:
Tetsuo Nakanishi, Annaka, JP;
Koichiro Watanabe, Annaka, JP;
Inventors:
Tetsuo Nakanishi, Annaka, JP;
Koichiro Watanabe, Annaka, JP;
Assignee:
Shin-Etsu Chemical Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/131 (2010.01); H01M 4/34 (2006.01); H01M 4/36 (2006.01); H01M 4/485 (2010.01); H01M 4/38 (2006.01); H01M 4/62 (2006.01); H01M 10/0525 (2010.01); H01M 4/134 (2010.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 10/0525 (2013.01); H01M 4/134 (2013.01); H01M 4/364 (2013.01); H01M 4/38 (2013.01); H01M 4/386 (2013.01); H01M 4/485 (2013.01); H01M 4/622 (2013.01); C01P 2002/70 (2013.01); C01P 2002/72 (2013.01); C01P 2002/74 (2013.01); C01P 2006/12 (2013.01); C01P 2006/40 (2013.01); H01M 4/131 (2013.01); H01M 2004/021 (2013.01); Y02E 60/122 (2013.01);
Abstract
A Si—O—Al composite comprising silicon, silicon oxide, and aluminum oxide exhibits a powder XRD spectrum in which the intensity of a signal of silicon at 28.3° is 1-9 times the intensity of a signal near 21°. A negative electrode material comprising the Si—O—Al composite is used to construct a non-aqueous electrolyte secondary battery which is improved in 1st cycle charge/discharge efficiency and cycle performance while maintaining the high battery capacity and low volume expansion upon charging of silicon oxide.