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Experimental Thermodynamic Characterization of the Chalcopyrite-Based Compounds in the Ag–In–Te System for a Potential Thermoelectric Application

Author

Listed:
  • Mykola Moroz

    (Department of Chemistry and Physics, National University of Water and Environmental Engineering, 33028 Rivne, Ukraine)

  • Fiseha Tesfaye

    (Johan Gadolin Process Chemistry Centre, Åbo Akademi University, 20500 Turku, Finland)

  • Pavlo Demchenko

    (Department of Inorganic Chemistry, Ivan Franko National University of Lviv, 79005 Lviv, Ukraine)

  • Emanuela Mastronardo

    (Department of Engineering, University of Messina, 98166 Messina, Italy)

  • Oksana Mysina

    (Department of Chemistry and Physics, National University of Water and Environmental Engineering, 33028 Rivne, Ukraine)

  • Myroslava Prokhorenko

    (Department of Cartography and Geospatial Modeling, Lviv Polytechnic National University, 79013 Lviv, Ukraine)

  • Serhiy Prokhorenko

    (Department of Measuring Information Technologies, Lviv Polytechnic National University, 79013 Lviv, Ukraine)

  • Daniel Lindberg

    (Department of Chemical and Metallurgical Engineering, Aalto University, Kemistintie 1, 02150 Espoo, Finland)

  • Oleksandr Reshetnyak

    (Department of Physical and Colloid Chemistry, Ivan Franko National University of Lviv, 79005 Lviv, Ukraine)

  • Leena Hupa

    (Johan Gadolin Process Chemistry Centre, Åbo Akademi University, 20500 Turku, Finland)

Abstract

The equilibrium concentration space of the Ag–In–Te system in the part AgInTe 2 –Te–In 2 Te 3 was studied through the modified solid-state electromotive force (EMF) method by dividing In 2 Te 3 –In 2 Te 5 –Ag 3 In 97 Te 147 (I), In 2 Te 5 –Te–Ag 3 In 97 Te 147 (II), Ag 3 In 97 Te 147 –Te–AgIn 5 Te 8 (III), AgIn 5 Te 8 –Te–AgIn 3 Te 5 (IV), and AgIn 3 Te 5 –Te–AgInTe 2 (V), into separate phase regions at T ≤ 500 K. The formation of a thermodynamically stable combination of the binary and ternary phases in the (I)–(V) phase regions from a metastable phase mixture of substances was carried out at T ≤ 500 K in the R(Ag + ) part of the positive electrode (PE) of the galvanic cells (GCs) of the structure: (−) C |∙| Ag |∙| SE |∙| R(Ag + ) |∙| PE |∙| C (+), where C is the graphite (inert electrode), SE is the solid-state electrolyte (Ag 3 GeS 3 Br glass), and Ag is the left (negative) electrode. The Ag + ions in the R(Ag + ) region functioned as small nucleation centers for the formation of the stable phases. The spatial position of the (I)–(V) phase regions in the concentration space of the Ag–In–Te system relative to the position of silver was used to express the overall potential-forming reactions with the participation of the substances Ag, Te, In 2 Te 5 , Ag 3 In 97 Te 147 , AgIn 5 Te 8 , AgIn 3 Te 5 , and AgInTe 2 . The subsequent EMF measurements were carried out by applying the same GCs. The temperature dependences of the EMF of GCs with PE of the (I)–(V) phase regions were here used to determine, for the first time, the values of standard thermodynamic functions of the binary and ternary compounds. The determined values of the Gibbs energies of the formation of compounds are equal: G In 2 Te 5 ○ = ( 182.7 ± 1.9 ) kJ · mol − 1 , G AgInTe 2 ○ = ( 115.0 ± 3.1 ) kJ · mol − 1 , G AgIn 3 Te 5 ○ = ( 301.5 ± 6.5 ) kJ · mol − 1 , G AgIn 5 Te 8 ○ = ( 487.6 ± 11.3 ) kJ · mol − 1 , and G Ag 3 In 97 Te 147 ○ = ( 8594 ± 189 ) kJ · mol − 1 The correctness of the division of the equilibrium phase space of the Ag–In–Te system in the part AgInTe 2 –Te–In 2 Te 3 involving the AgInTe 2 , AgIn 3 Te 5 , AgIn 5 Te 8 , and Ag 3 In 97 Te 147 compounds was confirmed by the agreement of the calculated and literature-based thermodynamic data for In 2 Te 5 compound. Compositions of pairs of the ternary compounds for their subsequent practical application were proposed.

Suggested Citation

  • Mykola Moroz & Fiseha Tesfaye & Pavlo Demchenko & Emanuela Mastronardo & Oksana Mysina & Myroslava Prokhorenko & Serhiy Prokhorenko & Daniel Lindberg & Oleksandr Reshetnyak & Leena Hupa, 2022. "Experimental Thermodynamic Characterization of the Chalcopyrite-Based Compounds in the Ag–In–Te System for a Potential Thermoelectric Application," Energies, MDPI, vol. 15(21), pages 1-12, November.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:21:p:8180-:d:961153
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    References listed on IDEAS

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    1. Mykola Moroz & Fiseha Tesfaye & Pavlo Demchenko & Myroslava Prokhorenko & Nataliya Yarema & Daniel Lindberg & Oleksandr Reshetnyak & Leena Hupa, 2021. "The Equilibrium Phase Formation and Thermodynamic Properties of Functional Tellurides in the Ag–Fe–Ge–Te System," Energies, MDPI, vol. 14(5), pages 1-15, February.
    2. Ando Junior, O.H. & Maran, A.L.O. & Henao, N.C., 2018. "A review of the development and applications of thermoelectric microgenerators for energy harvesting," Renewable and Sustainable Energy Reviews, Elsevier, vol. 91(C), pages 376-393.
    3. Sadeq Hooshmand Zaferani & Mehdi Jafarian & Daryoosh Vashaee & Reza Ghomashchi, 2021. "Thermal Management Systems and Waste Heat Recycling by Thermoelectric Generators—An Overview," Energies, MDPI, vol. 14(18), pages 1-21, September.
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