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:
Apr. 05, 2022
Filed:
Feb. 28, 2019
Applicant:
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Inventors:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/36 (2006.01); H01M 4/48 (2010.01); H01M 4/485 (2010.01); H01M 4/04 (2006.01); H01M 4/1391 (2010.01); H01M 4/62 (2006.01); H01M 10/0525 (2010.01); H01M 4/131 (2010.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/366 (2013.01); H01M 4/0404 (2013.01); H01M 4/131 (2013.01); H01M 4/1391 (2013.01); H01M 4/364 (2013.01); H01M 4/483 (2013.01); H01M 4/485 (2013.01); H01M 4/62 (2013.01); H01M 10/0525 (2013.01); H01M 2004/027 (2013.01); Y02E 60/10 (2013.01); Y02P 70/50 (2015.11);
Abstract
A negative electrode material contains composite particles. Each of the composite particles contains a negative electrode active material particle and a film. The negative electrode active material particle contains a silicon oxide phase and a lithium silicate phase. The film covers a surface of the negative electrode active material particle. The film contains an anion-exchange resin. To an ion-exchange group of the anion-exchange resin, a fluoride ion is bound. The content of the anion-exchange resin in the negative electrode material is not higher than 33 mass %.