Top > Search of International Patents > Metal oxynitride electrode catalyst

Metal oxynitride electrode catalyst

Foreign code F110004765
File No. A151-12WO
Posted date Jul 21, 2011
Country Republic of Korea
Application number 20067008650
Gazette No. 20060085931
Gazette No. 100769707
Date of filing May 3, 2006
Gazette Date Jul 28, 2006
Gazette Date Oct 23, 2007
International application number JP2004017801
International publication number WO2005053840
Date of international filing May 3, 2006
Date of international publication Jun 16, 2005
Priority data
  • P2003-403653 (Dec 2, 2003) JP
Title Metal oxynitride electrode catalyst
Abstract [PROBLEMS] Carbides and other most non- platinum compounds in conditions of an electrode potential as high as 0.4 V or above in an acidic electrolyte are activated and dissolved and cannot be stably present.
Thus, the application range of relevant electrode catalyst is limited to low electrode potentials.
There is a demand for development of an electrode catalyst that in these conditions, exhibits enhanced stability while maintaining catalytic capability. [MEANS FOR SOLVING PROBLEMS] There is provided a metal oxynitride electrode catalyst comprising an oxynitride containing at least one transition metal element selected from the group consisting of La, Ta, Nb, Ti and Zr, characterized in that the electrode catalyst is used at a potential of 0.4 V or higher relative to reversible hydrogen electrode potential in an acidic electrolyte.
This metal oxynitride electrode catalyst is useful as an electrode catalyst for electrochemical systems operated in an acidic electrolyte in the field of water electrolysis, organic electrolysis, fuel cell, etc.
Scope of claims [claim1]

Swarm power from [1] La, Ta, Nb, Ti and Zr also selected at least one transition metal elements, including okishinaitoraido, in acidic electrolytes for reversible hydrogen electrode potential 0.4 features to be used in V or more voltage, metal okishinaitoraido electrode catalyst.

Claim 1 to be dispersed on the catalyst carrier particles [2] as the electronic conductivity of powder metal okishinaitoraido electrode catalyst.

Claim 1 characterized to be used as a fuel cell electrode catalysts used [3] acidic electrolytes or 2 metal okishinaitoraido electrode catalyst.
  • Applicant
  • JAPAN SCIENCE AND TECHNOLOGY AGENCY
  • Inventor
  • OTA KENICHIRO
  • KAMIYA NOBUYUKI
  • MITSUSHIMA SHIGENORI
  • ISHIHARA AKIMITSU
  • DOUMEN KAZUNARI
  • HARA MICHIKAZU
IPC(International Patent Classification)
Reference ( R and D project ) CREST Research and Development of System Technologies for Resource Recycling and Minimum Energy Requirement AREA
Please contact us by E-mail or facsimile if you have any interests on this patent.

PAGE TOP

close
close
close
close
close
close