Physical properties of glasses in the Ag2GeS3-AgBr system

Thermodynamic study of phase equilibrium of superionic alloys of Ag3SBr1−xClx system in the concentration range 0.0–0.4 and temperature range 370–395 K

“…These reactions result in the shift of the figurative point of D in Gibbs tetrahedron to the point of silver. Halide anions in D (bromide and chloride) at T ≥ 395 K acquire likely the properties of mobile quasi-liquid [17]. In this case the positive electrode is characterized by a nonuniform distribution of the electrical charge along the ECC axis.…”

“…Powdered cell components were pressed (p ∼ 10 8 Pa) into through holes with the diameter of 2 mm arranged in the polytetrafluoroethylene (PTFE) matrix up to the density ρ = (0.93 ± 0.02)ρ 0 , where ρ 0 is the experimentally determined density of cast alloys. To eliminate the defects of plastic deformation under extrusion of alloys, we performed thermal cycling of ECCs twice in the range of 350-400 K with heating and cooling rates of 2 K min −1 [17,20]. The ECCs were heated in a resistance furnace similar to that described in [21] filled with a mixture of H 2 and Ar in a molar ratio of 1:9, p = 1.2 × 10 5 Pa.…”

“…Potential-forming processes were performed in ECCs of the type Br glass is a membrane with purely ionic Ag + conductivity [17]. Glassy Ag 3 GeS 3 Br, like Ag 3 GeS 3 I [18], belongs to the class of superionic materials [19].…”

Phase equilibria and thermodynamic properties of phases in the Ag-Cd-Sn-Se system

“…Potential forming processes were brought about in ECCs of the form C | Ag | AgI | Ag 2 GeS 3 glass | D | C (where C stands for an inert (graphite) electrode, Ag and D denote the electrodes of the cell, and AgI | Ag 2 GeS 3 glass is a bilayer membrane with purely ionic (Ag + ) conductivity). The bilayer ion selective mem brane prevents chemical interaction between the AgI and D and blocks the electronic component of the conductivity of the ECC in the precrystallization tem perature range of the Ag 2 GeS 3 glass: 560-630 K [16]. The Ag 2 GeS 3 glass was prepared by liquid quenching in ice water [17].…”

Calculation of thermodynamic functions of saturated solid solution of AgIn2Te3I compound in the Ag–In–Te–I system

“…The AgIn 2 X 3 Y compounds (X -S, Se, Te; Y -Cl, Br, I) belong to the group of silver-containing chalcogenide crystalline Ag 3 SI(Br) and glassy Ag 3 GeS 3 I(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 AgIn 2 Te 3 I compound, and calculation of thermodynamic functions of saturated solid solution of the four-element compound.…”