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Convective Instability of the Limiting Current of the Triiodide Reduction in a Vertical Channel

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Abstract

The instability of the limiting current of the cathodic reaction is studied in the I– 3–I–/Pt system with excess of potassium iodide at the electrode situated at the bottom of a vertical cylindrical channel. Dependence of parameters of the oscillation process on the concentration of electroactive and supporting ions and solution viscosity is analyzed. The deceleration of the transport processes in solutions containing glycerol is shown to be due to a considerable decrease in the triiodide ion diffusion coefficient.

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Authors and Affiliations

  1. Russian Academy of Sciences, Frumkin Institute of Electrochemistry, Leninskii pr. 31, Moscow, 117071, Russia

    L. A. Reznikova & A. D. Davydov

  2. Russian Academy of Sciences, Institute of Chemistry of Solutions, Akademicheskaya 1, Ivanovo, 153045, Russia

    E. E. Morgunova

Authors
  1. L. A. Reznikova
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  2. E. E. Morgunova
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  3. A. D. Davydov
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Reznikova, L.A., Morgunova, E.E. & Davydov, A.D. Convective Instability of the Limiting Current of the Triiodide Reduction in a Vertical Channel. Russian Journal of Electrochemistry 38, 659–662 (2002). https://doi.org/10.1023/A:1016066904902

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