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, 2019
Filed:
Oct. 20, 2015
Sumitomo Electric Industries, Ltd., Osaka-shi, Osaka, JP;
Takahiro Higashino, Itami, JP;
Yohei Noda, Itami, JP;
Chihiro Hiraiwa, Itami, JP;
Naho Mizuhara, Itami, JP;
Hiromasa Tawarayama, Itami, JP;
Hisao Takeuchi, Itami, JP;
Masatoshi Majima, Itami, JP;
SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka-shi, Osaka, JP;
Abstract
A cell structure includes a cathode, an anode, and a protonically conductive solid electrolyte layer between the cathode and the anode. The solid electrolyte layer contains a compound having a perovskite structure and containing zirconium, cerium, and a rare-earth element other than cerium. If the solid electrolyte layer has a thickness of T, the elemental ratio of zirconium to cerium at a position 0.25 T from a surface of the solid electrolyte layer opposite the cathode, Zr/Ce, and the elemental ratio of zirconium to cerium at a position 0.25 T from a surface of the solid electrolyte layer opposite the anode, Zr/Ce, satisfy Zr/Ce>Zr/Ce, and Zr/Ce>1.