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:
Jul. 23, 2024
Filed:
Nov. 12, 2020
Ngk Insulators, Ltd., Nagoya, JP;
Yukinobu Yura, Nagoya, JP;
Shigeki Okada, Nagoya, JP;
NGK INSULATORS, LTD., Nagoya, JP;
Abstract
Provided is a lithium secondary battery including a positive electrode layer composed of a lithium complex oxide sintered body, a negative electrode layer composed of a titanium-containing sintered body, a ceramic separator interposed therebetween, an electrolytic solution, and an exterior body including a closed space, which accommodates the positive electrode layer, the negative electrode layer, the ceramic separator, and the electrolytic solution, wherein the positive electrode layer, the ceramic separator, and the negative electrode layer are bonded together, a ratio C/A of a capacity C of the positive electrode layer to a capacity A of the negative electrode layer is 1.03 to 2.30, a ratio Tc/Ta of a thickness Tc of the positive electrode layer to a thickness Ta of the negative electrode layer is 0.50 to 2.00, the thickness Tc is 50 to 1000 μm, and the thickness Ta is 50 to 1200 μm.