Structural and transport studies of CdI2-doped silver borotellurite fast ion-conducting system

fast ion-conducting (fic) system composed of xcdi2–(100–x)[44.4ag2so4–55.6(40teo2–60b2o3)] has been prepared by melt-quenching method. the prepared samples were characterized by x-ray diffraction (xrd), impedance, and transport studies. xrd, dsc studies conclude that the samples with x = 0 to 20 show predominantly glassy nature. conductivity measurements were performed in the frequency range 20 hz–3 mhz by varying temperature from 30 to 150 °c. electrical parameters such as conductivity and activation energies of all the samples were evaluated by complex impedance analysis and arrhenius plots, respectively. the obtained results of conductivity are discussed using exchange reaction between the cations based on lewis’ hard and soft acids and bases (hsab) principle. ionic conductivity is identified as being mainly due to ag+ ions. the highest conductivity (order of 10−4 s cm−1) and ionic current (2.063 μa) is observed for cbt20 sample at room temperature; hence, it can be used as the best electrolyte material for solid-state battery application.