Meenakshi Pant

Conductivity relaxation in Ag + ion conducting PEO-PMMA-PEG polymer blends

In this paper, the electrical conductivity and relaxation studies in two different temperature regions (T < Tm and T > Tm) on plasticized PEO–PMMA blend polymer electrolyte system with AgNO3 salt are reported. The polymer electrolyte system has been prepared by solution cast technique and characterized by X-ray diffraction and differential scanning calorimetry. The conduction and relaxation processes at various temperatures have been investigated in the framework of modulus formalism. The distribution of relaxation times is discussed using Argand plot. Variation in ionic conductivity of polymer blends is discussed with the increase of PEO as well as with temperature.

Conductivity and Dielectric Behavior of AgCF3SO3 Doped PEO Polymer Films

PEO containing AgCF3SO3 polymer films have been prepared by the hot press technique. The effect of salt concentration on the frequency-dependent conductivity properties of PEO: AgCF3SO3 complexes are investigated by impedance spectroscopy in the temperature range from 303 K to 328 K. The ac conductivity and dielectric properties of the prepared samples have been analyzed. The ac conductivity obeyes the universal power law and as the temperature increases, the feature of σ(ω) α ωn is more predominant. The dielectric permittivity is found to increase with temperature of the prepared samples. The imaginary part of electrical modulus, M” shows the formation of dispersion peak. Relaxation times for the ionic charges carriers were extracted from the peak maxima of imaginary part of modulus at various temperatures. The plot of relaxation times as a function of temperature shows Arrhenius type behavior.

Characterization studies of plasticized PEO-PMMA nano-composite polymer electrolyte system

Present study reports the characterization studies on silver based PEO-PMMA-PEG nano composite polymer electrolyte system, prepared by solution cast technique. The complexation among various constituents of polymer samples was carried by XRD and FTIR analysis. Thermal analysis of the samples was carried out by DSC study.

Dielectric And Conductivity In Silver‐Poly (ethylene oxide) Solid Polymer Electrolytes Dispersed With SiO2 Nanoparticles

Thin solid polymer electrolytes based on poly‐ethylene oxide (PEO) and silver triflate (AgCF3SO3) dispersed with nanoparticles (SiO2) have been prepared by solution casting technique. Electrical properties of PEO—AgCF3SO3‐SiO2 system were investigated by impedance spectroscopy. Further from impedance spectroscopy quantity such as complex dielectric constant and loss tangent were computed. Conductivity was studied for prepared films and the results are discussed.

Effect of Plasticizer Concentration on the Conductivity in PAAM: AgNO3 Solid Polymer Electrolytes

Silver ion conducting polymer electrolyte films based on Poly acrylamide (PAAM) with EC (Ethylene Carbonate) as plasticizer have been prepared by the novel hot press technique. The complexation of polymer with AgNO3 salt has been confirmed by X‐ray diffraction and infrared studies. The electrical conductivity estimated using impedance spectroscopy is observed to be dependent on plasticizer (EC) concentration. The ac conductivity obeys the universal power law and as the temperature increases, the feature of σ(ω) α ωn is more predominant. The ionic conductivity as a function of temperature has been discussed.

Study of Relaxation Dynamics in Mixed Iodide Doped Silver‐Vanado‐Borate Superionic Glass System

Electrical conductivity and impedance measurements were carried out for a new mixed metal iodide salt doped silver vanado‐borate i.e., [(PbI2‐CuI)–Ag2O‐V2O5‐B2O3] super‐ionic glass system. The impedance plots (Z″ vs. Z′) for all the prepared glass samples were recorded and found to exhibit depressed semi circles over the studied temperature range. Frequency dependence of the imaginary part of impedance Z″ and the imaginary part of modulus M″ at different temperatures were also investigated. Also, relaxation dynamics in framework of modulus formalism has been discussed.Electrical conductivity and impedance measurements were carried out for a new mixed metal iodide salt doped silver vanado‐borate i.e., [(PbI2‐CuI)–Ag2O‐V2O5‐B2O3] super‐ionic glass system. The impedance plots (Z″ vs. Z′) for all the prepared glass samples were recorded and found to exhibit depressed semi circles over the studied temperature range. Frequency dependence of the imaginary part of impedance Z″ and the imaginary part of modulus M″ at different temperatures were also investigated. Also, relaxation dynamics in framework of modulus formalism has been discussed.

Frequency Dependent Conductivity of PbI2 Doped Silver Boro‐Vanadate Super Ionic Glass System

AC Conductivity measurements have been used to study the transport properties of PbI2 doped silver boro‐vanadate glasses prepared by melt quenching technique. The samples are characterized by XRD and DSC measurements. A correlation between Rτ, the decoupling index and σdc has been observed. The observed conductivity values suggest enhancement in conductivity by the introduction of PbI2 salt in the host glass matrix.

Conductivity Studies On PEO: AgCF3SO3 Electrolyte System With Nano‐porous Fillers

A new ion conducting nano composite polymer electrolytes (NCPEs) thin film based Poly (ethylene Oxide) PEO with AgCF3SO3 salt and SiO2 as nano filler has been prepared by solution‐ casting method. The salvation of porous filler with PEO has been confirmed by IR spectral studies. AC conductivity in the temperature range (303–328 K) is measured to evaluate the conductivity of the polymer electrolytes. The effect of the addition of nano porous fillers on the ionic conductivity in the polymer electrolyte has been studied.