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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 10128529 B1

PDFFull Text
Date of Patent:
Nov. 13, 2018

Filed:

Nov. 09, 2016

Lithium-ion secondary battery, fabricating method therof, and electronic device

Applicant:

Semiconductor Energy Laboratory Co., Ltd., Atsugi-shi, Kanagawa-ken, JP;

Inventors:

Ai Nakagawa, Kanagawa, JP;

Teppei Oguni, Kanagawa, JP;

Kai Kimura, Kanagawa, JP;

Rika Yatabe, Kanagawa, JP;

Assignee:

Semiconductor Energy Laboratory Co., Ltd., Kanagawa-ken, JP;

Attorneys:

Nixon Peabody LLP

Jeffrey L. Costella

Primary Examiner:

Jane J Rhee

Int. Cl.
CPC ...
H01M 6/04 (2006.01); H01M 10/0525 (2010.01); H01M 4/133 (2010.01); H01M 4/136 (2010.01); H01M 4/36 (2006.01); H01M 4/58 (2010.01); H01M 4/587 (2010.01); H01M 4/66 (2006.01); H01M 10/04 (2006.01); H01M 10/0567 (2010.01); H01M 10/058 (2010.01); G01R 31/36 (2006.01); G01R 31/44 (2006.01); H01M 4/62 (2006.01); H01M 10/0568 (2010.01); H01M 10/0569 (2010.01); H02J 7/00 (2006.01); H01M 10/42 (2006.01);
U.S. Cl.
CPC ...
H01M 10/0525 (2013.01); G01R 31/36 (2013.01); G01R 31/44 (2013.01); H01M 4/133 (2013.01); H01M 4/136 (2013.01); H01M 4/366 (2013.01); H01M 4/587 (2013.01); H01M 4/5825 (2013.01); H01M 4/62 (2013.01); H01M 4/626 (2013.01); H01M 4/661 (2013.01); H01M 10/0422 (2013.01); H01M 10/058 (2013.01); H01M 10/0567 (2013.01); H01M 10/0568 (2013.01); H01M 10/0569 (2013.01); H02J 7/0014 (2013.01); H01M 10/0463 (2013.01); H01M 10/425 (2013.01); H01M 2010/4271 (2013.01); H01M 2220/30 (2013.01); H01M 2300/0025 (2013.01); H01M 2300/0037 (2013.01);
Abstract

A lithium-ion secondary battery with a high capacity retention rate is provided. In addition, a fabricating method of a lithium-ion secondary battery with a high capacity retention rate is provided. The lithium-ion secondary battery includes a positive electrode, a negative electrode, and an electrolyte solution. The negative electrode includes a negative electrode active material layer. The electrolyte solution includes at least one of lithium bis(trifluoromethanesulfonyl)amide (LiTFSA) and lithium bis(fluorosulfonyl)amide (LiFSA). The electrolyte solution includes vinylene carbonate (VC). A coating film including lithium oxide is on a surface of the negative electrode active material layer. A fabricating method of a lithium-ion secondary battery includes a first step of enclosing a positive electrode, a negative electrode, and an electrolyte solution in an exterior body, and a second step of annealing the exterior body enclosing the positive electrode, the negative electrode, and the electrolyte solution for 24 hours or longer after the first step. The annealing in the second step is performed at a temperature higher than or equal to 80° C. and lower than or equal to 100° C.

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