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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.:

US 10777848 B1

PDFFull Text
Date of Patent:
Sep. 15, 2020

Filed:

Jun. 02, 2016

Lithium ion secondary battery

Applicant:

Envision Aesc Japan Ltd., Zama-Shi, Kanagawa, JP;

Inventors:

Takashi Nakagawa, Zama, JP;

Sayaka Yonehara, Zama, JP;

Assignee:

Envision AESC Japan Ltd., Zama-Shi, JP;

Attorney:

Troutman Pepper Hamilton Sanders LLP

Primary Examiner:

Wojciech Haske

Int. Cl.
CPC ...
H01M 10/0567 (2010.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 10/0525 (2010.01); H01M 10/42 (2006.01); H01M 2/16 (2006.01); H01M 4/131 (2010.01); H01M 4/133 (2010.01); H01M 4/587 (2010.01); H01M 4/62 (2006.01); H01M 4/66 (2006.01); H01M 10/0568 (2010.01); H01M 10/0569 (2010.01); H01M 10/0585 (2010.01); H01M 10/04 (2006.01); H01M 4/04 (2006.01); H01M 4/1391 (2010.01); H01M 4/1393 (2010.01); H01M 10/44 (2006.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 10/0567 (2013.01); H01M 2/166 (2013.01); H01M 4/131 (2013.01); H01M 4/133 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 4/587 (2013.01); H01M 4/622 (2013.01); H01M 4/623 (2013.01); H01M 4/625 (2013.01); H01M 4/661 (2013.01); H01M 10/0525 (2013.01); H01M 10/0568 (2013.01); H01M 10/0569 (2013.01); H01M 10/0585 (2013.01); H01M 10/4235 (2013.01); H01M 4/043 (2013.01); H01M 4/0404 (2013.01); H01M 4/0471 (2013.01); H01M 4/1391 (2013.01); H01M 4/1393 (2013.01); H01M 10/0413 (2013.01); H01M 10/446 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01); H01M 2004/028 (2013.01); H01M 2220/20 (2013.01); H01M 2300/004 (2013.01); H01M 2300/0025 (2013.01);
Abstract

Provided is a lithium ion secondary battery including: a positive electrode; a negative electrode; a separator; and an electrolyte solution, the electrolyte solution including an additive A containing sulfur, and at least one of a cyclic carbonate additive B which is different from the additive A and which has an unsaturated bond and a cyclic carbonate additive C which is different from the additives A and B and which has a halogen. A molar ratio of the additive A relative to a total molar amount of the additive A, the additive B, and the additive C is smaller than a total of a molar ratio of the additive B and a molar ratio of the additive C relative to the total molar amount.

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