Abstract
Triangulation of Ag–In–Te–I system in the vicinity of AgIn 2 Te 3 I compound was investigated by X-ray diffraction and differential thermal analysis methods. The spatial position of the phase region AgIn 2 Te 3 I–InTe–Ag 2 Te–AgI regarding the figurative point of silver was used in order to write the equation of virtual potential-forming reaction. Potential-forming reaction was performed in electrochemical cell (ECC) of the type (–) C | Ag | Ag 3 GeS 3 I(Br) glass | D | C (+) where C are inert (graphite) electrodes; Ag and D are the electrodes of the ECC; D represents the alloy of four-phase region; Ag 3 GeS 3 I glass is a membrane with purely ionic Ag + conductivity). Linear dependence of the EMF of cell on temperature in the range of 440−480 К was used to calculate the standard thermodynamic functions of saturated solid solution of AgIn 2 Te 3 I compound in Ag–In–Te–I system.
Highlights
In recent years, there has been an increasing interest in solid ionic conductors in view of the need to develop novel devices such as micro- and nano supercapacitors, ion selective membranes, batteries, fuel cells, sensors, electrochromic displays, etc [1, 2]
This paper presents the results of the experimental determination of the boundaries of phase regions including the AgIn2Te3I compound, and calculation of thermodynamic functions of saturated solid solution of the four-element compound
Crystals of indium and silver tellurides together with powdered AgI were used for making the positive electrodes of electrochemical cell (ECC) and for alloys for differential thermal analysis (DTA) and X-ray diffraction (XRD)
Summary
There has been an increasing interest in solid ionic conductors in view of the need to develop novel devices such as micro- and nano supercapacitors, ion selective membranes, batteries, fuel cells, sensors, electrochromic displays, etc [1, 2]. The AgIn2X3Y compounds (X – S, Se, Te; Y – Cl, Br, I) belong to the group of silver-containing chalcogenide crystalline Ag3SI(Br) and glassy Ag3GeS3I(Br) superionic phases in which chalogenide anions, along with silver cations, possess the properties of non-stationary quasi-liquids [3]. This paper presents the results of the experimental determination of the boundaries of phase regions including the AgIn2Te3I compound, and calculation of thermodynamic functions of saturated solid solution of the four-element compound
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