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. 07, 2025
Filed:
Oct. 21, 2021
Applicant:
Murata Manufacturing Co., Ltd., Kyoto, JP;
Inventor:
Yasuhiro Ikeda, Kyoto, JP;
Assignee:
Murata Manufacturing Co., Ltd., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/36 (2006.01); H01M 4/38 (2006.01); H01M 4/587 (2010.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/364 (2013.01); H01M 4/386 (2013.01); H01M 4/587 (2013.01); H01M 2004/027 (2013.01); H01M 10/0525 (2013.01);
Abstract
A negative electrode active material includes a first negative electrode active material particle, and the first negative electrode active material includes a silicon-based material. A Si2p spectrum obtained by measuring the first negative electrode active material particle in a state of 0.6 V (vs. Li/Li) by X-ray photoelectron spectroscopy has a peak in a range from 99.0 eV to 105.0 eV, and a half width of the peak is 1.5 eV or more and 8.0 eV or less.