MIXED GLASS FORMER EFFECT IN MOL-PERCENT 66.67AGI-24.66AG2O-8.33((1 - X)B2O3-XAS2O3) QUATERNARY AMORPHOUS SOLID ELECTROLYTES

Fast ion conducting quaternary amorphous solid electrolytes with chemical composition in mol % 66.67AgI-24.66Ag2O-8.33((1-x)B2O3-xAs2O3) for 0.1 < x < 0.9 were investigated emphasizing the influence of two glass formers on their transport properties. X-ray diffraction and differential scanning calorimetry were utilized to determine the amorphous nature and the thermal stability of these amorphous solid electrolytes for solid state battery application. Ionic and electronic conductivity studies were performed on all the electrolyte compositions to evaluate the highest conducting composition. The presence of a second glass former in the quaternary amorphous network has shown a pronounced effect on the glass transition temperature of the electrolytes. This mixed glass former effect is discussed based on the ionic radius, field strength and the valence state of the glass forming oxide cation and its role in the formation of an amorphous network.