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Generalized Nernst layer model for convective-diffusion transport. Numerical solution for bromide ion electroreduction on inactive rotating disk electrode under steady state conditions

Russian Journal of Electrochemistry volume 53, pages 1100–1108 (2017)Cite this article

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Abstract

The process of electroreduction of bromate anion BrO3 - from aqueous solutions on catalytically inactive (e.g., carbon) electrodes is theoretically described in the framework of the generalized Nernst layer model in which the Nernst-layer thickness is chosen independently for each system’s component according to the Levich formula. For this system, the numerical algorithm is developed for solving the system diffusion- kinetic equations for the case of excessive content of protons in solution and one-dimensional transport (corresponding to RDE) under stationary conditions. The results are compared with conclusions of the approximate analytical theory proposed for the same system in our recent study (J. Electroanal. Chem., 2016, vol. 779, p. 146). The closeness of the numerical and analytical data makes it possible to conclude that both approaches can be used for solving this problem. Deviations are observed only when the approximations lying in the basis of the corresponding analytical relationships are violated.

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Authors and Affiliations

  1. Mendeleev University of Chemical Technology, Moscow, 125047, Russia

    A. E. Antipov & M. A. Vorotyntsev

  2. Moscow State University, Leninskie Gory, Moscow, 119992, Russia

    A. E. Antipov & M. A. Vorotyntsev

  3. Institute of Problems of Chemical Physics, Chernogolovka, Moscow Region, 142432, Russia

    M. A. Vorotyntsev

  4. University of Burgundy, Institute of Molecular Chemistry, Dijon, France

    M. A. Vorotyntsev

Authors
  1. A. E. Antipov
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  2. M. A. Vorotyntsev
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Correspondence to A. E. Antipov.

Additional information

Original Russian Text © A.E. Antipov, M.A. Vorotyntsev, 2017, published in Elektrokhimiya, 2017, Vol. 53, No. 10, pp. 1239–1247.

This paper is the authors’ contribution to the special issue of Russian Journal of Electrochemistry dedicated to the 100th anniversary of the birth of the outstanding Soviet electrochemist Veniamin G. Levich.

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Antipov, A.E., Vorotyntsev, M.A. Generalized Nernst layer model for convective-diffusion transport. Numerical solution for bromide ion electroreduction on inactive rotating disk electrode under steady state conditions. Russ J Electrochem 53, 1100–1108 (2017). https://doi.org/10.1134/S1023193517100020

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  • DOI: https://doi.org/10.1134/S1023193517100020

Keywords

  • bromate anions
  • redox pair Br2/Br–
  • comproportionation
  • Nernst layer model
  • redox-mediation autocatalysis