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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)  

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.)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.19, no.5, 2008 , pp. 423-429 More about this Journal
Abstract
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 $0.73\;mA/cm^2$.
Keywords
Direct ethanol fuel cell; Ternary catalyst; Ethanol oxidation; PtRuW;
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