Thermodynamic Properties of Superionic Phase Ag4HgSe2I2 Determined by the EMF Method

A1 Journal article (refereed)


Internal Authors/Editors


Publication Details

List of Authors: Mykola Moroz, Fiseha Tesfaye, Myroslava Prokhorenko, Serhiy Prokhorenko, Oleksandr Reshetnyak
Publisher: Springer US
Place: Germany
Publication year: 2018
Journal: Journal of Phase Equilibria and Diffusion
Volume number: 39
Issue number: 1
Start page: 11
End page: 16
eISSN: 1863-7345


Abstract

Triangulation
of the Ag-Hg-Se-I system in the vicinity of quaternary
phase Ag4HgSe2I2 was performed by differential
thermal analysis, X-ray diffraction and electromotive force (EMF) methods. The spatial position of the phase region Ag4HgSe2I2-Se-HgI2
regarding the figurative point
of silver was used to write the chemical reaction of formation of Ag4HgSe2I2. The EMF measurements were carried out by applying an electrochemical cell: (–) C | Ag | Ag2GeS3 glass | Ag4HgSe2I2,
HgI2, Se | C (+), where C is graphite and Ag2GeS3 glass
is the fast purely Ag+ ions conducting electrolyte. The linear
dependence of the EMF of the electrochemical cell on temperature was used to determine
the standard thermodynamic values of Ag4HgSe2I2 for
the first time.


Keywords

EMF technique, Gibbs energy, Phase equilibria, Thermodynamics

Last updated on 2019-15-06 at 05:08