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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 12418049 B1

PDFFull Text
Date of Patent:
Sep. 16, 2025

Filed:

Mar. 22, 2024

Power storage device, method for manufacturing power storage device, and electronic device

Applicant:

Semiconductor Energy Laboratory Co., Ltd., Atsugi, JP;

Inventors:

Kazuhei Narita, Kanagawa, JP;

Ryota Tajima, Kanagawa, JP;

Teppei Oguni, Kanagawa, JP;

Assignee:

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

Attorneys:

NIXON PEABODY LLP

Jeffrey L. Costellia

Primary Examiner:

Jimmy Vo

Int. Cl.
CPC ...
H01M 10/0569 (2010.01); G04G 19/00 (2006.01); H01G 11/28 (2013.01); H01G 11/32 (2013.01); H01G 11/52 (2013.01); H01G 11/60 (2013.01); H01G 11/62 (2013.01); H01G 11/84 (2013.01); H01G 11/86 (2013.01); H01M 4/36 (2006.01); H01M 4/525 (2010.01); H01M 4/587 (2010.01); H01M 4/66 (2006.01); H01M 10/0525 (2010.01); H01M 10/0568 (2010.01); H01M 50/414 (2021.01); H01M 50/429 (2021.01); H01M 50/44 (2021.01);
U.S. Cl.
CPC ...
H01M 10/0569 (2013.01); G04G 19/00 (2013.01); H01G 11/28 (2013.01); H01G 11/32 (2013.01); H01G 11/52 (2013.01); H01G 11/60 (2013.01); H01G 11/62 (2013.01); H01G 11/84 (2013.01); H01G 11/86 (2013.01); H01M 4/366 (2013.01); H01M 4/525 (2013.01); H01M 4/587 (2013.01); H01M 4/661 (2013.01); H01M 4/669 (2013.01); H01M 10/0525 (2013.01); H01M 10/0568 (2013.01); H01M 50/414 (2021.01); H01M 50/429 (2021.01); H01M 50/4295 (2021.01); H01M 50/44 (2021.01); H01M 2300/0037 (2013.01); Y02E 60/13 (2013.01); Y02T 10/70 (2013.01);
Abstract

To provide a power storage device whose charge and discharge characteristics are unlikely to be degraded by heat treatment. To provide a power storage device that is highly safe against heat treatment. The power storage device includes a positive electrode, a negative electrode, a separator, an electrolytic solution, and an exterior body. The separator is located between the positive electrode and the negative electrode. The separator contains polyphenylene sulfide or solvent-spun regenerated cellulosic fiber. The electrolytic solution contains a solute and two or more kinds of solvents. The solute contains LiBETA. One of the solvents is propylene carbonate.

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