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:
Apr. 11, 2023
Filed:
Dec. 17, 2020
Panasonic Corporation, Kadoma, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
PANASONIC HOLDINGS CORPORATION, Kadoma, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Abstract
This negative electrode comprises an electrode current collector, and an electrode mixture layer provided on a surface of the electrode current collector. When, with respect to the thickness direction of the electrode mixture layer, a range from the surface on the side of the electrode current collector to 40% of the thickness of the electrode mixture layer is defined as a first region, and a range from the surface on the side opposite to the electrode current collector to 40% of the thickness of the electrode mixture layer is defined as a second region, the first region and the second region have different volume change ratio upon charge and discharge, and the region having the larger volume change ratio upon charge and discharge has a higher content of a solid inorganic filler and a lower content of a hollow inorganic filler than the region having the smaller volume change ratio.