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Electrocatalytic activity of binary Palladium Ruthenium anode catalyst on Ni-support for ethanol alkaline fuel cells

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Abstract

In search for a cheaper anode catalyst for the oxidation of ethanol for development of direct alcohol fuel cells, Pd has been considered here as an interesting substitute for Pt in Pt Ru binary electrodeposite. The binary catalyst when co-deposited on nickel support has been found to increase the current density and decrease the anodic overvoltage significantly with respect to pure Pt, Pd and Ni. Its electrocatalytic capability is also comparable with that of the Pt-Ru binary electrocatalyst on Ni-support, when studied in 1 M EtOH containing 1 M NaOH solution. The effect of loading of Pd Ru electrocatalyst on Ni support has also been tested. The electrocatalytic activity of the electrodes for oxidation of ethanol has been explained by studies of cyclic voltammetry, chronopotentiometry, steady-state polarization, and conjugated scanning electron microscopy–energy dispersion X-ray spectroscopy. It has been found that electrode containing the higher amount of deposit are less affected by carbonaceous poisons.

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Authors and Affiliations

  1. Physical Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata, 700032, India

    Joyeeta Bagchi & Swapan Kumar Bhattacharya

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  1. Joyeeta Bagchi
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  2. Swapan Kumar Bhattacharya
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Correspondence to Swapan Kumar Bhattacharya.

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Bagchi, J., Bhattacharya, S.K. Electrocatalytic activity of binary Palladium Ruthenium anode catalyst on Ni-support for ethanol alkaline fuel cells. Transition Met Chem 32, 47–55 (2007). https://doi.org/10.1007/s11243-006-0127-9

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  • DOI: https://doi.org/10.1007/s11243-006-0127-9

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