Title:
MEDIUM-TO-LOW-TEMPERATURE HIGH-EFFICIENCY ELECTROCHEMICAL CELL AND ELECTROCHEMICAL REACTION SYSTEM COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2012/133438
Kind Code:
A1
Abstract:
The present invention is an electrochemical cell in which a generation efficiency of no less than 40% is obtained even in a medium-to-low-temperature region of 700ºC or less, and a generation method in which the electrochemical cell is used. The electrochemical cell is configured so that: a fuel electrode having an interface with fuel gas, a dense ion conductor (electrolyte), and an air electrode having an interface with air (oxygen) are layered in the stated order; and that the fuel electrode and the air electrode are separated in a non-contacting manner by the electrolyte, and a functional layer having a porous structure for promoting an electrochemical reaction is layered on some or all of the surface of the fuel electrode, which is the interface with the fuel gas. The present invention makes it possible to provide an electrochemical reaction system in which gaseous hydrogen fuel is used, wherein the electrochemical reaction system dramatically reduces resistance caused by dispersion of the gaseous hydrogen fuel gas inside the fuel electrode, makes it possible to obtain a generation efficiency of no less than 40% at a single-cell level even in a medium-to-low-temperature region of 700ºC or less, contributes to resolving environmental and energy issues, and has a high efficiency.
Inventors:
SUZUKI TOSHIO (JP)
YAMAGUCHI TOSHIAKI (JP)
HAMAMOTO KOICHI (JP)
FUJISHIRO YOSHINOBU (JP)
YAMAGUCHI TOSHIAKI (JP)
HAMAMOTO KOICHI (JP)
FUJISHIRO YOSHINOBU (JP)
Application Number:
PCT/JP2012/057978
Publication Date:
October 04, 2012
Filing Date:
March 27, 2012
Export Citation:
Assignee:
NAT INST OF ADVANCED IND SCIEN (JP)
SUZUKI TOSHIO (JP)
YAMAGUCHI TOSHIAKI (JP)
HAMAMOTO KOICHI (JP)
FUJISHIRO YOSHINOBU (JP)
SUZUKI TOSHIO (JP)
YAMAGUCHI TOSHIAKI (JP)
HAMAMOTO KOICHI (JP)
FUJISHIRO YOSHINOBU (JP)
International Classes:
H01M4/86; C04B35/00; C04B41/85; H01M8/02; H01M8/12
Foreign References:
| JP2003346864A | 2003-12-05 | |||
| JPH02262260A | 1990-10-25 | |||
| JPS62281271A | 1987-12-07 | |||
| JPH1021931A | 1998-01-23 | |||
| JPH0757746A | 1995-03-03 | |||
| JPH08213029A | 1996-08-20 | |||
| JP2007103217A | 2007-04-19 | |||
| JP2011507161A | 2011-03-03 | |||
| JP2009016109A | 2009-01-22 | |||
| JP2010153273A | 2010-07-08 | |||
| JP2011014461A | 2011-01-20 | |||
| JP2004055326A | 2004-02-19 | |||
| JP2002151106A | 2002-05-24 | |||
| JP2009252492A | 2009-10-29 |
Other References:
See also references of EP 2693544A4
Z. SHAO; S. M. HAILE, NATURE, vol. 431, 2004, pages 170 - 173
T. HIBINO; A. HASHIMOTO; K. ASANO; M. YANO; M. SUZUKI; M. SANO, ELECTROCHEM. SOLID-SATE LETT., vol. 5, no. 11, 2002, pages A242 - A244
T. SUZUKI; Z. HASAN; Y. FUNAHASHI; T. YAMAGUCHI; Y. FUJISHIRO; M. AWANO, SCIENCE, vol. 325, 2009, pages 852 - 855
T. SUZUKI; T. YAMAGUCHI; K. HAMAMOTO; Y. FUJISHIRO; M. AWANO; N. SAMMES, ENERGY & ENVIRONMENTAL SCI., vol. 4, 2011, pages 940 - 943
Z. SHAO; S. M. HAILE, NATURE, vol. 431, 2004, pages 170 - 173
T. HIBINO; A. HASHIMOTO; K. ASANO; M. YANO; M. SUZUKI; M. SANO, ELECTROCHEM. SOLID-SATE LETT., vol. 5, no. 11, 2002, pages A242 - A244
T. SUZUKI; Z. HASAN; Y. FUNAHASHI; T. YAMAGUCHI; Y. FUJISHIRO; M. AWANO, SCIENCE, vol. 325, 2009, pages 852 - 855
T. SUZUKI; T. YAMAGUCHI; K. HAMAMOTO; Y. FUJISHIRO; M. AWANO; N. SAMMES, ENERGY & ENVIRONMENTAL SCI., vol. 4, 2011, pages 940 - 943
Attorney, Agent or Firm:
SUDO, MASAHIKO (JP)
Masahiko Sudo (JP)
Masahiko Sudo (JP)
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