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Electrochemical reduction of Fe(ii) ions on different solid electrodes in fused ZnCl2-2NaCl mixture

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Abstract

The electrodeposition of Fe(II) in ZnCl2-2NaCl melt at 450°C was studied at molybdenum and tungsten electrodes and the results are compared with those obtained at glassy carbon in previous work. The kinetics of the electrodeposition and electrocrystallization of iron were studied, showing that the process is quasireversible, and the values of the kinetic parameters κ° and α were obtained. Mass transport towards the electrode is a simple diffusion process and the diffusion coefficient was obtained by applying different electrochemical techniques. Potential step measurements indicate that instantaneous nucleation and growth phenomena play a part in the overall process.

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Authors and Affiliations

  1. Dpto. de Química Analítica, Facultad de Ciencias, Universidad de Valladolid, Prado de la Magdalena s/n, 47005, Valladolid, Spain

    Y. Castrillejo, A. M. Martinez, M. Vega & P. Sanchez Batanero

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  1. Y. Castrillejo
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  2. A. M. Martinez
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  3. M. Vega
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  4. P. Sanchez Batanero
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Castrillejo, Y., Martinez, A.M., Vega, M. et al. Electrochemical reduction of Fe(ii) ions on different solid electrodes in fused ZnCl2-2NaCl mixture. J Appl Electrochem 26, 1279–1285 (1996). https://doi.org/10.1007/BF00249931

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  • DOI: https://doi.org/10.1007/BF00249931

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