Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Development of Bifunctional Electrocatalyst for PEM URFC

고분자 전해질 막을 이용한 일체형 재생 연료전지용 촉매전극 개발

  • Yim, Sung-Dae (Fuel Cell Research Center, Hydrogen & Fuel Cell Research Department, Korea Institute of Energy Research) ;
  • Park, Gu-Gon (Fuel Cell Research Center, Hydrogen & Fuel Cell Research Department, Korea Institute of Energy Research) ;
  • Sohn, Young-Jun (Fuel Cell Research Center, Hydrogen & Fuel Cell Research Department, Korea Institute of Energy Research) ;
  • Yang, Tae-Hyun (Fuel Cell Research Center, Hydrogen & Fuel Cell Research Department, Korea Institute of Energy Research) ;
  • Yoon, Young-Gi (Fuel Cell Research Center, Hydrogen & Fuel Cell Research Department, Korea Institute of Energy Research) ;
  • Lee, Won-Yong (Fuel Cell Research Center, Hydrogen & Fuel Cell Research Department, Korea Institute of Energy Research) ;
  • Kim, Chang-Soo (Fuel Cell Research Center, Hydrogen & Fuel Cell Research Department, Korea Institute of Energy Research)
  • 임성대 (한국에너지기술연구원, 수소.연료전지연구부, 저온연료전지연구센터) ;
  • 박구곤 (한국에너지기술연구원, 수소.연료전지연구부, 저온연료전지연구센터) ;
  • 손영준 (한국에너지기술연구원, 수소.연료전지연구부, 저온연료전지연구센터) ;
  • 양태현 (한국에너지기술연구원, 수소.연료전지연구부, 저온연료전지연구센터) ;
  • 윤영기 (한국에너지기술연구원, 수소.연료전지연구부, 저온연료전지연구센터) ;
  • 이원용 (한국에너지기술연구원, 수소.연료전지연구부, 저온연료전지연구센터) ;
  • 김창수 (한국에너지기술연구원, 수소.연료전지연구부, 저온연료전지연구센터)
  • Published : 2004.03.30
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Abstract

For the fabrication of high efficient bifunctional electrocatalyst of oxygen electrode for PEM URFC (Polymer Electrolyte Membrane Unitized Regenerative Fuel Cell), which is a promising energy storage and conversion system using hydrogen as the energy medium, several bifunctional electrocatalysts were prepared and tested in a single cell URFC system. The catalysts for oxygen electrode revealed fuel cell performance in the order of Pt black > PtIr > PtRuOx > PtRu ~ PtRuIr > PtIrOx, whereas water electrolysis performance in the order of PtIr ~ PtIrOx > PtRu > PtRuIr > PtRuOx ~ Pt black. Considering both reaction modes PtIr was the most effective elctrocatalyst for oxygen electrode of present PEM URFC system. In addition, the water electrolysis performance was significantly improved when Ir or IrOx was added to Pt black just 1 wt.% without the decrease of fuel cell performance. Based on the catalyst screening and the optimization of catalyst composition and loading, the optimum catalyst electrodes for PEM URFC were $1.0mg/cm^2$ of Pt black as hydrogen electrode and $2.0mg/cm^2$ of PtIr (99:1) as oxygen electrode.

Keywords

References

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