Structural, electrical, and transport number studies of AgI-doped silver borotellurite fast ion conducting glass system

• Published in: Ionics 2018-12, Vol.24 (12), p.3885-3895
• Main Authors: Rao, Puli Nageswar, Ramesh Kumar, E., Appa Rao, B.
• Format: Article
• Language: English
• Subjects: Batteries; Carrier density; Chemistry; Chemistry and Materials Science; Condensed Matter Physics; Electrical resistivity; Electrochemistry; Energy Storage; Glass; Ion currents; Optical and Electronic Materials; Original Paper; Renewable and Green Energy
• ISSN: 0947-7047; 1862-0760
• DOI: 10.1007/s11581-018-2550-2

Silver ion conducting glass system composed of x AgI–(100 −  x )[0.444 Ag 2 SO 4 –0.555 (0.4TeO 2 –0.6B 2 O 3 )] has been prepared by melt quenching method for x  = 0 to 80 in step of 10. XRD, DSC, FTIR, and SEM were carried out to understand some structural properties of prepared samples. XRD and DSC studies of the samples with x  ≤ 60 show predominantly glassy nature. Electrical parameters and activation energies of all the samples were evaluated by complex impedance analysis and Arrhenius plots of DC conductivity, respectively. Carrier concentration, mobility, inter-ionic distance, and ionic conductivity of samples were measured and discussed. It is observed that the conductivity varies with increasing the temperature and composition. The highest conductivity (1.8 × 10 −1  S cm −1 ) and ionic current (8.33 μA) is observed for = 50 sample at room temperature; hence, it can be used as best electrolyte material for solid-state battery application.