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Electrooxidation of ethanol using PtRuBi/C electrocatalyst prepared by borohydride reduction

Electrooxidation of ethanol using PtRuBi/C electrocatalyst prepared by borohydride reduction,10.1007/s11581-009-0340-6,Ionics,M. Brandalise,R. W. R. V

Electrooxidation of ethanol using PtRuBi/C electrocatalyst prepared by borohydride reduction  
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Pt/C, PtRu/C, PtBi/C, and PtRuBi/C electrocatalysts (20 wt.% metal loading) were prepared by borohydride reduction using H2PtCl6·6H2O, RuCl3·xH2O, and Bi(NO3)3·5H2O as metal sources and Vulcan XC 72 as support. The electrocatalysts were characterized by energy-dispersive X-ray analysis, X-ray diffraction, and thermogravimetric analysis. The electro-oxidation of ethanol was studied in sulfuric acid solution by cyclic voltammetry and chronoamperometry. The electrochemical studies showed that PtRuBi/C (50:40:10) electrocatalyst has superior performance for ethanol electro-oxidation at room temperature compared to the other electrocatalysts. Preliminary tests at 100 °C on a single direct ethanol fuel cell also confirm the results obtained by electrochemical techniques.
Journal: Ionics , vol. 15, no. 6, pp. 743-747, 2009
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