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

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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An Experimental Study on the Characteristics of Electrochemical Reactions of RDF/RPF in the Direct Carbon Fuel Cell

직접탄소 연료전지에서 RDF 및 RPF의 전기화학반응 특성에 관한 실험적 연구

  • 안성율 (부산대학교 기계공학과 대학원) ;
  • 이영훈 (부산대학교 기계공학과 대학원) ;
  • 엄성용 (부산대학교 기계공학과 대학원) ;
  • 성연모 (부산대학교 기계공학과 대학원) ;
  • 문철언 (부산대학교 기계공학과 대학원) ;
  • 강기중 (부산대학교 기계공학과 대학원) ;
  • 최경민 (부산대학교 기계공학부) ;
  • 김덕줄 (부산대학교 기계공학부)
  • Received : 2012.09.26
  • Accepted : 2012.10.26
  • Published : 2012.10.31
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Abstract

The electrochemical reaction of refuse derived fuel (RDF) and refuse plastic/paper fuel (RPF) was investigated in the direct carbon fuel cell (DCFC) system. The open circuit voltage (OCV) of RPF was higher than RDF and other coals because of its thermal reactive characteristic under carbon dioxide. The thermal reactivity of fuels was investigated by thermogravimetric analysis method. and the reaction rate of RPF was higher than other fuels. The behavior of all sample's potential was analogous in the beginning region of electrochemical reactions due to similar functional groups on the surface of fuels analyzed by X-ray Photoelectron Spectroscopy experiments. The potential level of RDF and RPF decreased rapidly comparing to coals in the next of the electrochemical reaction because the surface area and pore volume investigated by nitrogen gas adsorption tests were smaller than coals. This characteristic signifies the contact surface between electrolyte and fuel is restricted. The potential of fuels was maintained to the high current density region over 40 $mA/cm^2$ by total carbon component. The maximum power density of RDF and RPF reached up to 45~70% comparing to coal. The obvious improvement of maximum power density by increasing operating temperature was observed in both refuse fuels.

Keywords

References

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