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:
Sep. 24, 2024
Filed:
Sep. 10, 2019
Gs Yuasa International Ltd., Kyoto, JP;
Kenta Ogi, Kyoto, JP;
Fumiya Nakano, Kyoto, JP;
Ryosuke Shimokawa, Kyoto, JP;
Shota Ito, Kyoto, JP;
Masaki Masuda, Kyoto, JP;
Taro Yamafuku, Kyoto, JP;
Kei Kumabayashi, Kyoto, JP;
Akihiko Miyazaki, Kyoto, JP;
GS Yuasa International Ltd., Kyoto, JP;
Abstract
An aspect of the present invention is an energy storage device including an electrode assembly that has a negative electrode and a positive electrode, where the negative electrode contains a negative electrode substrate and a negative active material, and has a negative active material layer disposed in an unpressed shape along at least one surface of the negative electrode substrate, the negative active material includes solid graphite particles as a main component, and the solid graphite particles have an aspect ratio of 1 or more and 5 or less.