An ethanol electrooxidation study on carbon-supported Pt-Ru nanoparticles for direct ethanol fuel cells |
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| Authors: | Ozlem Sahin Derya Duzenli Hilal Kivrak |
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| Affiliation: | 1. Chemical Engineering Department, Selcuk University, Konya, Turkey;2. General Directory of Mineral Research and Exploration, Ankara, Turkey |
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| Abstract: | Carbon supported Pt-Ru catalysts were prepared at varying Pt:Ru ratios by polyol method. The crystallite sizes of these catalysts were determined by X-ray diffraction technique. The specific surface areas of these catalysts were also defined by Brunauer–Emmett–Teller technique. Cyclic voltammetry, chronoamperometry, and electrochemical impedance spectroscopy measurements were conducted on these carbon supported Pt-Ru catalysts to investigate the effect of ruthenium on the ethanol electrooxidation kinetics. Results indicated that Pt-Ru (25:1) catalyst showed the best ethanol electrooxidation activity. In conclusion, ethanol electrooxidation mechanism was proposed. |
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| Keywords: | Anode catalyst electrochemical impedance spectroscopy electrooxidation ethanol fuel cells platinum ruthenium |
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