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Metal oxynitride electrode catalyst

外国特許コード F110004765
整理番号 A151-12WO
掲載日 2011年7月21日
出願国 大韓民国
出願番号 20067008650
公報番号 20060085931
公報番号 100769707
出願日 平成18年5月3日(2006.5.3)
公報発行日 平成18年7月28日(2006.7.28)
公報発行日 平成19年10月23日(2007.10.23)
国際出願番号 JP2004017801
国際公開番号 WO2005053840
国際出願日 平成18年5月3日(2006.5.3)
国際公開日 平成17年6月16日(2005.6.16)
優先権データ
  • 特願2003-403653 (2003.12.2) JP
発明の名称 (英語) Metal oxynitride electrode catalyst
発明の概要(英語) [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.
特許請求の範囲(英語) [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.
  • 出願人(英語)
  • JAPAN SCIENCE AND TECHNOLOGY AGENCY
  • 発明者(英語)
  • OTA KENICHIRO
  • KAMIYA NOBUYUKI
  • MITSUSHIMA SHIGENORI
  • ISHIHARA AKIMITSU
  • DOUMEN KAZUNARI
  • HARA MICHIKAZU
国際特許分類(IPC)
参考情報 (研究プロジェクト等) CREST Research and Development of System Technologies for Resource Recycling and Minimum Energy Requirement AREA
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