Proton-conducting oxide

Patent metadata

Field	Value
Publication number	US-2016003767-A1
Application number	US-201514731696-A
Country	US
Kind code	A1
Filing date	Jun 5, 2015
Priority date	Jul 1, 2014
Publication date	Jan 7, 2016
Grant date	—

Abstract

The present invention provides a proton-conducting oxide comprising a perovskite crystal structure represented by a composition formula A a B 1−x B′ x O 3-δ . A represents strontium. B represents zirconium. B′ represents at least one selected from the group consisting of yttrium and ytterbium. The value of a is more than 0.84 and less than 1.0. The value of x is more than 0.0 and less than 0.2. The present invention provides a proton-conducting oxide having a capability to maintain high proton conductivity even if the proton-conducting oxide is exposed to the air atmosphere for a long time.

First claim

1 . A proton-conducting oxide comprising:
a perovskite crystal structure represented by a composition formula A a B 1−x B′ x O 3-δ , wherein A represents strontium; B represents zirconium; B′ represents at least one selected from the group consisting of yttrium and ytterbium; a is more than 0.84 and less than 1.0; and x is more than 0.0 and less than 0.2.

2 . A fuel cell comprising a proton-conducting oxide, wherein
the proton-conducting oxide comprises: a perovskite crystal structure represented by a composition formula A a B 1−x B′ x O 3-δ , wherein A represents strontium; B represents zirconium; B′ represents at least one selected from the group consisting of yttrium and ytterbium; a is more than 0.84 and less than 1.0; and x is more than 0.0 and less than 0.2.

3 . A hydrogen sensor comprising a proton-conducting oxide, wherein
the proton-conducting oxide comprises: a perovskite crystal structure represented by a composition formula A a B 1−x B′ x O 3-δ , wherein A represents strontium; B represents zirconium; B′ represents at least one selected from the group consisting of yttrium and ytterbium; a is more than 0.84 and less than 1.0; and x is more than 0.0 and less than 0.2.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Takeuchi Hiroki
• Zenitani Yuji
• Asano Tetsuya

Classifications

• G01N27/4074 Primary

  for detection of gases other than oxygen · CPC title

• H01M2300/0071

  Oxides · CPC title

• H01M2008/1293

  Fuel cells with solid oxide electrolytes · CPC title

• H01M8/1253

  the electrolyte containing zirconium oxide · CPC title

• Y02P70/50

  Manufacturing or production processes characterised by the final manufactured product · CPC title