Title:
ELECTROCHEMICAL CELL AND ELECTROCHEMICAL STACK
Document Type and Number:
WIPO Patent Application WO/2018/235467
Kind Code:
A1
Abstract:
The present invention curbs reduction in cell performance due to mutual diffusion of elements or a difference in expansion amount in a reduction atmosphere between a solid electrolyte layer and a fuel electrode. This electrochemical cell is provided with: a solid electrolyte layer comprising ZrO2 containing a first rare earth element; an air electrode disposed on one side of the solid electrolyte layer; and a fuel electrode disposed on the other side of the solid electrolyte layer. The fuel electrode comprises: CeO2 containing a second rare earth element; and Ni or a Ni-containing alloy. The electrochemical cell is further provided with an intermediate layer disposed between the solid electrolyte layer and the fuel electrode. The intermediate layer comprises a solid solution that contains Zr, Ce, the first rare earth element, and the second rare earth element.
Inventors:
YAMADA KEISUKE (JP)
FUNAHASHI YOSHIHIRO (JP)
YAMAGIWA KATSUYA (JP)
FUNAHASHI YOSHIHIRO (JP)
YAMAGIWA KATSUYA (JP)
Application Number:
PCT/JP2018/019043
Publication Date:
December 27, 2018
Filing Date:
May 17, 2018
Export Citation:
Assignee:
NGK SPARK PLUG CO (JP)
International Classes:
H01M8/1213; C04B35/486; C04B35/50; C25B9/23; H01M4/86; H01M8/12
Domestic Patent References:
| WO2011093168A1 | 2011-08-04 |
Foreign References:
| JP2003288912A | 2003-10-10 | |||
| JP2005091228A | 2005-04-07 | |||
| JPH07254418A | 1995-10-03 | |||
| JP2004507061A | 2004-03-04 | |||
| JP2010231918A | 2010-10-14 | |||
| US6004688A | 1999-12-21 | |||
| JP2003288912A | 2003-10-10 | |||
| JP2016081813A | 2016-05-16 |
Other References:
See also references of EP 3644423A4
Attorney, Agent or Firm:
NAKAJIMA Hiroki (JP)
Download PDF: