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:
Jun. 22, 2021
Filed:
Feb. 28, 2018
Applicant:
Kabushiki Kaisha Toshiba, Minato-ku, JP;
Inventors:
Assignee:
KABUSHIKI KAISHA TOSHIBA, Minato-ku, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01M 10/0525 (2010.01); H01M 4/485 (2010.01); H01M 4/131 (2010.01); H01M 10/0568 (2010.01); H01M 10/0569 (2010.01); C01G 23/00 (2006.01); H01M 10/42 (2006.01); H01M 4/36 (2006.01); H01M 10/44 (2006.01); H01M 10/052 (2010.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 10/0525 (2013.01); C01G 23/003 (2013.01); H01M 4/131 (2013.01); H01M 4/366 (2013.01); H01M 4/485 (2013.01); H01M 10/052 (2013.01); H01M 10/0568 (2013.01); H01M 10/0569 (2013.01); H01M 10/425 (2013.01); H01M 10/44 (2013.01); H01M 2004/027 (2013.01); H01M 2004/028 (2013.01); H01M 2220/20 (2013.01); H01M 2300/0037 (2013.01);
Abstract
According to one embodiment, a lithium ion secondary battery is provided. The lithium ion secondary battery includes a negative electrode containing a negative electrode active material-containing layer, a positive electrode, and an electrolyte containing Li ions and Na ions. The negative electrode active material-containing layer contains a Na-containing titanium composite oxide. A ratio (W/W) of an Na amount W(g/g) in the electrolyte to an Na amount W(g/g) in the negative electrode active material-containing layer satisfies Formula (1) below:1×10≤W/W≤1×10  (1).