DSC AND ELECTRICAL CONDUCTIVITY STUDIES ON SUPERIONIC ALL-GLASS PHOSPHATE-BASED COMPOSITES

The work investigates electrical properties of all-glass composite Ag ⁺-ion conductors based on silver phosphate glasses. A combination of X-ray diffraction (XRD) and differential scanning calorimetry (DSC) was used for characterization of the samples. The impedance spectroscopy (IS) was applied to determine the electrical conductivity in a wide temperature range (from -140 to +20°C). Results of the DSC studies indicate that all-glass materials prepared from the powdered glasses are bi-phasic. On the other hand their electrical properties resemble homogeneous rather than heterogeneous superionic conductors.