Impact of Ag2O on physical and electrical properties of Li2O-MgO-Bi2O3-SiO2 glass system as promising solid state electrolytes

The intrinsic aim of this work is to understand the influence of composition change on the physical-electrical parameters of glasses with the composition (20-Y) Li₂O-YAg₂O-20MgO-10Bi₂O₃-50SiO₂ (Y = 0.25, 0.5, 1.0, 2.0 and 4.0 mol%). The results of the physical parameters indicate a growth in the strength of the glass structure with the increase replacement of Li₂O by Ag₂O. However, the decrease in loss factor ε″, and AC conductivity σ_ac of glasses may be attributed to the decrease in the space charge polarization (scp). AC conductivities exhibit simple power law variation. The s values essentially lie in the range of 0.67-0.92, which is typical of conductors in Jonscher regime. Dielectric properties (constant ε', loss ε″ and ac conductivity σ_ac, over a range of frequency 100-100 kHz and temperature RT (Room Temperature)-200 °C and frequency exponent s) of these glasses have been studied The results indicate a great potential of the prepared glasses as promising materials that can be used for solid state electrolytes.