Ion transport and solid state battery studies on a new silver molybdate superionic glass system: x[0.75AgI: 0.25AgCl]: (1-x)[Ag2O: MoO3] |
| |
Authors: | R C Agrawal M L Verma R K Gupta R Kumar R M Chandola |
| |
Institution: | (1) Solid State Ionics Research Laboratory, School of Studies in Physics, Pt. Ravishankar Shukla University, 492010 Raipur, Chhattisgarh, India;(2) Govt. D. B. Girls P. G. College, 492001 Raipur, Chhattisgarh, India;(3) Department of Physics, Dr. H. S. Gaur University, 470003 Sagar, MP, India |
| |
Abstract: | Preparation, material characterization, ion transport and battery discharge characteristic studies are reported for a new
silver molybdate glass system: x0.75AgI: 0.25AgCl]: (1-x)Ag2O: MoO3], where 0<x<1 in molar weight fraction. The traditional host AgI has been replaced by an alternate compound: “a quenched
0.75AgI: 0.25 AgCl] mixed system/solid solution”. Electrical conductivity (σ), ionic mobility (μ) and mobile ion concentration
(n) measurements were carried out as a function of “x”. The composition: 0.80.75AgI: 0.25AgCl]: 0.2Ag2O: MoO3] exhibited the highest conductivity (∼ 6×10−3 S·cm−1) at room temperature and has been referred to as ‘optimum conducting composition (OCC)’. The compositional variation of “μ”
and “n” revealed that the enhancement in the room temperature conductivity of OCC is predominantly due to the increase in
mobile ion concentration. The XRD and DSC analysis on OCC indicated the formation of glassy phase with partial presence of
unreacted polycrystalline phase of the host salt. The temperature dependence of various ionic transport parameters viz. “σ”,
“μ”, “n” and ionic transference number (tion) were carried out on the OCC and the results have been discussed on the basis of theoretical models suggested for superionic
glasses. In addition to this, solid state batteries were fabricated using OCC as electrolyte and discharge characteristics
were studied under varying load conditions. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|