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:
Jan. 12, 2021
Filed:
Oct. 25, 2013
Applicant:
Hitachi Chemical Company, Ltd., Tokyo, JP;
Inventors:
Masayuki Kouzu, Hitachi, JP;
Hideyuki Tsuchiya, Hitachi, JP;
Katsutomo Ohzeki, Chiba, JP;
Yoshie Oosaki, Chiba, JP;
Tatsuya Nishida, Hitachi, JP;
Assignee:
Showa Denko Materials Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/48 (2010.01); H01M 4/64 (2006.01); H01M 10/0525 (2010.01); C01B 33/12 (2006.01); H01M 4/38 (2006.01); H01M 4/131 (2010.01); H01M 4/36 (2006.01); H01M 4/62 (2006.01); H01M 4/134 (2010.01); H01M 4/485 (2010.01);
U.S. Cl.
CPC ...
H01M 4/48 (2013.01); C01B 33/12 (2013.01); H01M 4/131 (2013.01); H01M 4/134 (2013.01); H01M 4/364 (2013.01); H01M 4/366 (2013.01); H01M 4/386 (2013.01); H01M 4/485 (2013.01); H01M 4/625 (2013.01); H01M 4/64 (2013.01); C01P 2006/40 (2013.01); H01M 10/0525 (2013.01); H01M 2220/30 (2013.01);
Abstract
A negative electrode material for a lithium ion secondary battery includes a silicon oxide and having a diffraction peak attributable to Si (111) in an X-ray diffraction spectrum, in which a size of a silicon crystallite calculated from the diffraction peak is from 2.0 nm to 8.0 nm.