Ion transport property studies on PEO–PVP blended solid polymer electrolyte membranes

Abstract

The ion transport property studies on Ag + ion conducting PEO-PVP blended solid polymer electrolyte (SPE) membranes, (1 − x)[90PEO : 10AgNO 3 ] : xPVP, where x = 0, 1, 2, 3, 5, 7, 10 (wt%), are reported. SPE films were caste using a novel hot-press technique instead of the traditional solution cast method. The conventional solid polymeric electrolyte (SPE) film, (90PEO : 10AgNO 3), also prepared by the hot-press method and identified as the highest conducting composition at room temperature on the basis of PEO-AgNO 3-salt concentration dependent conductivity studies, was used as the first-phase polymer electrolyte host into which PVP were dispersed as second-phase dispersoid. A twofold conductivity enhancement from that of the PEO host could be achieved at room temperature for PVP blended SPE film composition: 98(90PEO : 10AgNO 3) : 2PVP. This has been referred to as optimum conducting composition (OCC). The formation of SPE membranes and material characterizations were done with the help of the XRD and DSC techniques. The ion transport mechanism in this SPE OCC has been characterized with the help of basic ionic parameters, namely ionic conductivity (σ), ionic mobility (µ), mobile ion concentration (n) and ionic transference number (t ion). Solid-state polymeric batteries were fabricated using OCC as electrolyte and the cell-potential discharge characteristics were studied under different load conditions.

Na+Ion Conducting Hot-pressed Nano Composite Polymer Electrolytes

“…Polymer electrolyte films are formed, in general, via solution-cast and sol-gel routes. However, recently, an alternate hot-press technique has been developed for casting completely dry polymer electrolyte films [7][8][9][10]. The sodium salt has several advantages over lithium.…”

"EFFECT OF TiO2 NANOFILLER ON OPTICAL AND IONIC CONDUCTIVITY STUDIES OF (1-X) PVP: X (CH3COOK) POLYMER ELECTROLYTE FILMS "

“…In the anode region due to the potassium metal the charge carrier's takes place and in cathode region due to the mixture of iodine and carbon powder material enhances its electronic conductivity 67 . Figure-4 shows the discharge characteristics of the prepared solid-state battery.…”

Synthesis and Spectral Characterization on Pva/Pvp: Go Based Blend Polymer Electrolytes

“…The decrement of dielectric constant (ἒ) is due to the enhancement of the mobility charge carrier's takes place across the width of the space charge region and decreases with higher frequency until the energy of electron states equals to quasi-Fermi level. 64 Figure-8 shows the variation of logarithmic frequency (f) with respect to tangent loss (δ) for various wt% compositions of nanocomposite polymer electrolytes. The decrement of tangent loss is due to the increase of logarithmic frequency (f).…”