Munesh Rathore

Li2SO4−Li2O−P2O5 ionic glass dispersed with [Bmim] [PF6] ionic liquid: Electrical transport and thermal stability investigations

A fast ionic composite is prepared by dispersion of Ionic liquid [Bmim][PF6] in Li2SO4−Li2O−P2O5 glass matrix by mixing and through grinding. Amorphous/glassy nature of the samples is confirmed by X-Ray diffraction (XRD). Surprisingly, the electrical conductivity of the samples is found to be increasing by ∼ 2 orders of magnitude and exhibits typical Arrhenius behavior with low activation energy. DC polarization and impedance spectroscopy measurements suggest that samples are essentially ionic in nature. The conductivity isotherms were also obtained at different temperatures (T < 100 °C) and found to be appreciably stable at least for ∼ 10 days.

Enhanced electrical transport in ionic liquid dispersed TMAI-PEO solid polymer electrolyte

A polymer composite is prepared by dispersing ionic liquid [Bmim][BF4] in Polyethylene oxide-tetra methyl ammonium iodide composite and subsequent microwave treatment. X-ray diffraction patterns confirm the composite nature. To explore possibility of proton conductivity in these films, electrical transport is studied by impedance spectroscopy and DC polarization. It is revealed that addition of ionic liquid in host TMAI-PEO solid polymer electrolyte enhances the conductivity by ∼ 2 orders of magnitude. Polarization measurements suggest that composites are essentially ion conducting in nature. The maximum ionic conductivity is found to be ∼2 × 10−5 for 10 wt % ionic liquid.

Structural relaxation at glass transition temperature in Li2O−B2O3 glassy ionic system

Structural relaxation using glass transition kinetics in Li2O−B2O3 glassy system is reported. Amorphous and glassy nature of the samples is confirmed by X-Ray diffraction (XRD) and Differential Scanning Calorimetry (DSC). The activation energy for structural relaxation at Tg, obtained from glass transition kinetics using Moynihan equation, exhibits interesting trend with Li2O content. It is observed that due to such structural relaxation at the glass transition temperature the ionic conductivity exhibits an anomalous rise, deviating from Arrhenius behavior.

Electrical And Electrochemical Characterization Of PEO‐Ag2SO4 Composite Polymer Electrolytes

The flat, thin, and flexible ion conducting polymer films were prepared by solution casting technique from PEO complexed with Ag2SO4. Structural, electrical and electrochemical properties have been studied. The samples are found to be essentially ionic in nature. The highest conductivity is found to be 7×10−4 Ω−1 cm−1 at 20 °C for sample with 15 weight percent of Ag2SO4 in PEO matrix. Ag/I2 cells are fabricated using polymer films as electrolytes do confirm the ionic nature. The films are found to be stable under the battery conditions.