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:
Jun. 04, 2024
Filed:
Mar. 06, 2020
Tdk Corporation, Tokyo, JP;
Taisuke Masuko, Tokyo, JP;
Kazumasa Tanaka, Tokyo, JP;
TDK CORPORATION, Tokyo, JP;
Abstract
A solid-state secondary battery includes: a positive electrode layer; a negative electrode layer; a solid-state electrolyte layer; and side margin layers arranged side by side on outer circumferences of the positive electrode layer and the negative electrode layer. The solid-state secondary battery is made of a laminated body obtained by alternately laminating the positive electrode layer of which the side margin layer arranged on the outer circumference thereof and the negative electrode layer of which the side margin layer arranged on the outer circumference thereof with the solid-state electrolyte layer arranged therebetween, and when the porosity of the side margin layers is defined as φand the porosity of the solid-state electrolyte layer is defined as φ, the porosity ratio (φ/φ) satisfies the following Expression (1); 0.5≤(φ/φ)<1 . . . (1).