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:
Feb. 18, 2020
Filed:
Oct. 05, 2016
Applicant:
Sekisui Chemical Co., Ltd., Osaka-shi, Osaka, JP;
Inventor:
Rie Teranishi, Tsukuba, JP;
Assignee:
SEKISUI CHEMICAL CO., LTD., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/36 (2006.01); H01M 4/38 (2006.01); H01M 4/48 (2010.01); H01M 10/0525 (2010.01); H01M 10/0568 (2010.01); H01M 10/0585 (2010.01); H01M 10/0567 (2010.01); H01M 4/134 (2010.01); H01M 4/131 (2010.01); H01M 10/056 (2010.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 10/0525 (2013.01); H01M 4/131 (2013.01); H01M 4/134 (2013.01); H01M 4/364 (2013.01); H01M 4/386 (2013.01); H01M 4/388 (2013.01); H01M 4/483 (2013.01); H01M 10/056 (2013.01); H01M 10/0567 (2013.01); H01M 10/0568 (2013.01); H01M 10/0585 (2013.01); H01M 2004/027 (2013.01); H01M 2300/0025 (2013.01); H01M 2300/0034 (2013.01);
Abstract
A lithium ion secondary batteryincludes at least one cell obtained by laminating a positive electrode, an electrolyte layer, and a negative electrodein this order. The electrolyte layercontains a fluoride. The negative electrodehas a negative electrode active material layer containing a silicon compound. At least one of the negative electrodeshas a mass ratio of fluorine/silicon (F/Si ratio) of 1.0 or less on a surface of the negative electrode active material layer.