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Metal oxide electrode catalyst

外国特許コード F110004947
整理番号 A151-16WO
掲載日 2011年7月27日
出願国 大韓民国
出願番号 20077002893
公報番号 20070032358
公報番号 100797173
出願日 平成19年2月6日(2007.2.6)
公報発行日 平成19年3月21日(2007.3.21)
公報発行日 平成20年1月23日(2008.1.23)
国際出願番号 JP2005015052
国際公開番号 WO2006019128
国際出願日 平成19年2月6日(2007.2.6)
国際公開日 平成18年2月23日(2006.2.23)
発明の名称 (英語) Metal oxide electrode catalyst
発明の概要(英語) A corrosion-resistant electrode catalyst for oxygen reduction characterized by comprising a main catalyst formed of at least one transition metal oxide selected from oxygen deficiency-containing ZrO2, Ta2O5, Nb2O5, SnO2, TiO2, V2O5, MoO3, and WO3, and a co-catalyst of gold, the catalyst being adapted for use in contact with an acidic electrolyte at a potential which is at least 0.4 V higher than the reversible hydrogen electrode potential.
The catalyst may be used, for example, in such a form that fine particles of the transition metal oxide and gold, or fine particles comprising gold fine particles coated with the transition metal oxide are dispersed on a catalyst carrier which is an electron conductive powder.
This electrode catalyst is suitable as an electrode catalyst for an electrochemical system using an acidic electrolyte in the field of water electrolysis, inorganic or organic electrolysis, fuel cells and the like.
© KIPO & WIPO 2007
特許請求の範囲(英語) [claim1]

[1] oxygen deficiency ZrO 2, 205 Ta, Nb 205, SnO 2, TiO 2, V 205, MoO 3, WO 3 of the small, at least one transition metal oxides primary catalyst and then gold catalyst in contact with acidic electrolytes and reversible hydrogen electrode potentials for 0.... Than 4 V high ヽ characteristics to be used in potential corrosion oxygen reducing catalyst.

Claim 1 to feature on the catalyst carrier [2] wherein transition metal oxides and gold in electronic conductivity of powder particles dispersed in corrosion oxygen reduction electrode catalyst.

Claim 1 to be dispersed on the catalyst carrier particles [3] above transition metal oxide coated gold nanoparticle as a electron conductivity of powder, in corrosion-resistant oxygen reduction electrode catalyst.

[4] acid electrolyte fuel cell oxygen pole used as a catalyst to claim one of the 1-3 and described corrosion oxygen reduction electrocatalysts.
  • 出願人(英語)
  • JAPAN SCIENCE AND TECHNOLOGY AGENCY
  • 発明者(英語)
  • OTA KENICHIRO
  • KAMIYA NOBUYUKI
  • MITSUSHIMA SHIGENORI
  • ISHIHARA AKIMITSU
  • YAN LIU
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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