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- Title
Synthesis, Thermodynamic Properties, and Structural Characteristics of Multicomponent Compounds in the Ag–Ni–Sn–S System.
- Authors
Moroz, Mykola; Tesfaye, Fiseha; Demchenko, Pavlo; Kordan, Vasyl; Prokhorenko, Myroslava; Mysina, Oksana; Reshetnyak, Oleksandr; Gladyshevskii, Roman
- Abstract
To establish an accurate thermodynamic database of the Ag–Ni–Sn–S system, only a few experimental studies have been published. There is no published work with thermodynamic values of the quaternary compounds of the Ag–Ni–Sn–S system. Therefore, the main objective of this work was to determine the thermodynamic properties of multicomponent phases in the Ag–Ni–Sn–S system and to contribute new experimental thermodynamic data for the relatively better known phases in the temperature and compositional ranges that have not been studied experimentally before. To achieve these objectives, the T–x space of the Ag–Ni–Sn–S system in the region SnS–SnS2–NiS2–NiS–Ag2S–SnS was studied by the x-ray phase diffraction and modified electromotive force (EMF) methods. The existence of the multicomponent compounds AgNiS2, Ag2NiS2, Ag2NiSnS4, and Ag2NiSn3S8 below 600 K was established. The synthesis was carried out in the positive electrodes of the electrochemical cells (ECCs). The values of standard thermodynamic functions of the compounds were determined from the temperature dependencies of the EMF of the ECCs. The crystal structure of the new modification of Ag2NiSn3S8 compound was studied by x-ray diffraction analysis.
- Subjects
THERMODYNAMICS; THERMODYNAMIC functions; ELECTRIC batteries; ELECTROMOTIVE force; ELECTROCHEMICAL electrodes
- Publication
JOM: The Journal of The Minerals, Metals & Materials Society (TMS), 2023, Vol 75, Issue 6, p2016
- ISSN
1047-4838
- Publication type
Article
- DOI
10.1007/s11837-023-05784-9