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:
Dec. 06, 2016
Filed:
Dec. 09, 2013
Toto Ltd., Kitakyushu-Shi, Fukuoka, JP;
Hiroshi Niimi, Kanagawa-Ken, JP;
Akira Ishiguro, Kanagawa-Ken, JP;
Shigeru Ando, Kanagawa-Ken, JP;
Akira Kawakami, Kanagawa-Ken, JP;
Megumi Shimazu, Kanagawa-Ken, JP;
Yuya Takahashi, Kanagawa-Ken, JP;
Toto Ltd., Fukuoka, JP;
Abstract
Disclosed is a durable solid oxide fuel cell that is less likely to have a problem of a conventional solid oxide fuel cell that an air electrode containing a peroviskite oxide, when exposed to a reducing atmosphere, is separated at the stop of operation, especially shutdown. The solid oxide fuel cell includes an air electrode that is obtained by firing a compact containing a perovskite oxide and sulfur element. The content of the sulfur element in the air electrode as fresh after firing or before the start of power generation is in the range of 50 ppm to 3,000 ppm. The separation of the air electrode is effectively suppressed at the shutdown operation.