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:
Nov. 25, 2025
Filed:
Oct. 01, 2020
Applicant:
Ube Corporation, Ube, JP;
Inventors:
Assignee:
UBE Corporation, Ube, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 4/583 (2010.01); C08G 73/10 (2006.01); H01M 4/02 (2006.01); H01M 4/04 (2006.01); H01M 4/38 (2006.01); H01M 4/62 (2006.01);
U.S. Cl.
CPC ...
H01M 4/583 (2013.01); C08G 73/1007 (2013.01); H01M 4/0404 (2013.01); H01M 4/386 (2013.01); H01M 4/622 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01);
Abstract
A power storage device including a negative electrode active material layer which contains carbon particles, silicon-based particles and a polyimide-based binder, in which the negative electrode active material layer has a porosity of more than 40%. The power storage device has a high charge/discharge capacity and excellent cycle characteristics.