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:
Mar. 21, 2023
Filed:
Sep. 12, 2018
Applicant:
Nec Corporation, Tokyo, JP;
Inventor:
Takuya Hasegawa, Tokyo, JP;
Assignee:
NEC CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 10/0569 (2010.01); H01M 4/38 (2006.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 10/0525 (2010.01); H01M 10/0568 (2010.01); C07D 327/00 (2006.01);
U.S. Cl.
CPC ...
H01M 10/0569 (2013.01); C07D 327/00 (2013.01); H01M 4/386 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 10/0525 (2013.01); H01M 10/0568 (2013.01); H01M 2220/20 (2013.01); H01M 2300/004 (2013.01); H01M 2300/0034 (2013.01); H01M 2300/0091 (2013.01);
Abstract
A purpose of the present invention is to provide a lithium ion secondary battery which has further improved life characteristics. The lithium ion secondary battery of the present invention is characterized by comprising a positive electrode comprising a positive electrode active material that operates at 4.5 V or more with respect to lithium, and an electrolyte solution comprising an electrolyte solvent comprising a fluorinated ether, a cyclic sulfonic acid ester and LiN(FSO).