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Determination of thermodynamic properties of Ag3SBr superionic phase using EMF technique

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Abstract

Triangulation of the Ag–S–Br system in the Ag–S–AgBr section is carried out using the methods of physico-chemical analysis. The temperature dependence of EMF of the electrochemical cell of C|Ag|Ag3GeS3Br|D|C glass is studied in the range of 340–430 K (C are inert (graphite) electrodes; Ag, D are the cell electrodes; D is the equilibrium composition of the Ag3SBr–S–AgBr phase region; Ag3GeS3Br glass is the membrane with purely ionic (Ag+) conductivity). Equations E(T) are used to calculate the values of thermodynamic functions of the Ag3SBr phase that is in equilibrium with silver bromide and sulfur (T < 379.34 K) and in equilibrium with silver bromide and the liquid phase (T > 379.34 K). The values of thermodynamic functions of phases Ag3SI, Ag3SBr, and Ag3TeBr in the standard state are compared. The effect of chalcogen ↔ chalcogen and halogen ↔ halogen replacement in the anionic sublattice on the values of thermodynamic functions of phases is analyzed.

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Authors and Affiliations

  1. National University of Water Management and Nature Resources Use, Rivne, Ukraine

    M. V. Moroz

  2. Lviv Polytechnic National University, Lviv, Ukraine

    M. V. Prokhorenko

  3. Center for Microelectronics and Nanotechnology, University of Rzeszów, Rzeszów, Poland

    S. V. Prokhorenko

Authors
  1. M. V. Moroz
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  2. M. V. Prokhorenko
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  3. S. V. Prokhorenko
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Corresponding author

Correspondence to M. V. Moroz.

Additional information

Original Russian Text © M.V. Moroz, M.V. Prokhorenko, S.V. Prokhorenko, 2015, published in Elektrokhimiya, 2015, Vol. 51, No. 9, pp. 1004–1008.

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Moroz, M.V., Prokhorenko, M.V. & Prokhorenko, S.V. Determination of thermodynamic properties of Ag3SBr superionic phase using EMF technique. Russ J Electrochem 51, 886–889 (2015). https://doi.org/10.1134/S1023193515090098

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  • DOI: https://doi.org/10.1134/S1023193515090098

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