Phase Equilibria and Thermodynamic Properties of Selected Compounds in the Ag–Ga–S–AgBr System for Modern Application in Energy Conversion Devices

Mykola Moroz*, Fiseha Tesfaye, Pavlo Demchenko, Myroslava Prokhorenko, Bohdan Rudyk, Orest Pereviznyk, Emanuela Mastronardo, Daniel Lindberg, Oleksandr Reshetnyak, Leena Hupa

*Corresponding author for this work

Research output: Chapter in Book/Conference proceedingConference contributionScientificpeer-review

Abstract

The phase equilibria of the Ag–Ga–S–AgBr system in the part GaS–Ga 2S 5–AgBr–Ag 2S below 600 K were investigated by the modified electromotive force (EMF) method using the Ag + catalysts as small nucleation centers of equilibrium phases. Division of the GaS–Ga 2S 5–AgBr–Ag 2S was carried out with the participation of the following compounds Ag 2S, GaS, Ga 2S 3, AgBr, Ag 9GaS 6, AgGaS 2, Ag 3SBr, Ag 3Ga 2S 4Br, and Ag 27Ga 2S 12Br 9. Reactions were performed by applying electrochemical cells (ECs) with the structure: (−) IE | NE | SSE | R{Ag +} | PE | IE (+), where IE is the inert electrode (graphite powder), NE is the negative electrode (silver powder), SSE is the solid-state electrolyte (glassy Ag 3GeS 3Br), PE is the positive electrode, R{Ag +} is the region of Ag + diffusion into PE. The measured EMF and temperature values of ECs were used to determine the standard thermodynamic functions of the compounds Ag 3Ga 2S 4Br and Ag 27Ga 2S 12Br.

Original languageEnglish
Title of host publicationEnergy Technology 2024: Carbon Dioxide Management and Other Technologies
EditorsChukwunwike Iloeje, Shafiq Alam, Donna Post Guillen, Fiseha Tesfaye, Lei Zhang, Susanna A. Hockaday, Neale R. Neelameggham, Hong Peng, Nawshad Haque, Onuralp Yücel, Alafara Abdullahi Baba
Place of PublicationSwizerland
PublisherSpringer, Cham
Pages257-268
Volume1
Edition1
ISBN (Electronic)978-3-031-50244-6
ISBN (Print)978-3-031-50244-6, 978-3-031-50244-6, 978-3-031-50244-6, 978-3-031-50244-6, N 978-3-031-50243-9
DOIs
Publication statusPublished - 2024
MoE publication typeA4 Article in a conference publication
Event2024 TMS Annual Meeting & Exhibition: Energy Technologies and CO2 Management - Hyatt Regency Orlando, Orlando, United States
Duration: 3 Mar 20247 Mar 2024
Conference number: 153
http://www.programmaster.org/PM/PM.nsf/UpcomingSymposia/83D3B5E94BBDEEFD85258948006A965C?OpenDocument&ParentUNID=DC407D8D1045893585258687004B57DC

Publication series

NameMinerals, Metals and Materials Series
ISSN (Print)2367-1181
ISSN (Electronic)2367-1696

Conference

Conference2024 TMS Annual Meeting & Exhibition
Abbreviated titleTMS 2024
Country/TerritoryUnited States
CityOrlando
Period03/03/2407/03/24
Internet address

Keywords

  • Photovoltaic compounds
  • Phase equilibria
  • Thermodynamic properties
  • EMF method
  • Gibbs energy

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