Abstract
A Pt on nano-sized CeO2 particles which in turn are supported on carbon black (CB) was synthesized using co-impregnation method. The electrochemical activity of methanol oxidation reaction on the composite anode Pt-CeO2/CB was investigated using cyclic voltammetry and chronoamperometry experimentation. The onset potential of methanol oxidation reaction on the Pt-CeO2/CB anodes was shifted to a lower potential as compared with that on commercially available Pt-Ru/Carbon (C) alloy anode. In addition, the activation energy of the Pt-CeO2/CB anode was much lower than that of the Pt-Ru/C alloy anode at temperature between 28°C to 60°C. Moreover, the composite anode showed better stability of performance in a cycle test as compared with that of the Pt-Ru/C alloy anode. Importantly, the rare metal, Ru is not required in the present anode material and the amount of Pt required would be also significantly reduced. Based on those results, we expect that our composite anode will be one of promising new anode materials for fuel cell applications.
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