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

  • 제19권5호
  • /
  • Pages.423-429
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  • 2008
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  • 1738-7264(pISSN)
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  • 2288-7407(eISSN)
한국수소및신에너지학회 (The Korean Hydrogen and New Energy Society)
권호 표지

직접 에탄올 연료전지(DEFC)의 anode용 삼원소 전극촉매[$Pt_5Ru_4M$(M= Ni, Sn, Mo and W)]의 에탄올 전기산화반응에 관한 연구

A Study on Electro-oxidation of Ethanol with $Pt_5Ru_4M$(M= Ni, Sn, Mo and W) Ternary Electrocatalysts for Anode of Direct Ethanol Fuel Cell(DEFC)

  • 노창수 (전북대학교 수소.연료전지 공학과) ;
  • 강대규 (전북대학교 수소.연료전지 공학과) ;
  • 손정민 (전북대학교 자원.에너지공학과, 전북대학교 수소.연료전지공학과)
  • Noh, Chang-Soo (Dept. of Hydrogen & Fuel Cells Engineering, Specialized Graduate School, Chonbuk National Univ.) ;
  • Kang, Dae-Kyu (Dept. of Hydrogen & Fuel Cells Engineering, Specialized Graduate School, Chonbuk National Univ.) ;
  • Sohn, Jung-Min (Dept. of Mineral Resources & Energy Engineering and Specialized Graduate School of Hydrogen & Fuel Cells Engineering, Chonbuk National Univ.)
  • 발행 : 2008.10.30
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초록

This work was carried out to improve the performance of anodic electrocatalysts in direct ethanol fuel cell(DEFC). PtRu and $Pt_5Ru_4M$(M= Ni, Sn, Mo and W) electrocatalysts were prepared by using a $NaBH_4$ reduction method. Alloy crystal structure and particle size of electrocatalysts were characterized by X-ray diffraction(XRD) and transmission electron microscopy(TEM). The XRD analysis of the electrocatalysts revealed that the face-centered cubic(fcc) peaks shifted to slightly higher diffraction angles when third metals were added. Average size of the uniform particles was observed to be approximately $3{\sim}3.5\;nm$ from the TEM image. The electrochemical measurements were carried out in the solution 1M $H_2SO_4$ and 1M $C_2H_5OH$ at room temperature. Cyclic-voltammogram results showed that $Pt_5Ru_4W$ electrocatalyst exhibited much higher current density for ethanol oxidation of $2.73\;mA/cm^2$ than PtRu electrocatalyst of $0.73\;mA/cm^2$.

키워드

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