Role of ZrO₂ on physico‐chemical properties of PVA/NaClO₄ composites for energy storage applications

Abstract

A novel polymer nano composite electrolyte composed of PVA polymer matrix with ZrO 2 ceramic filler and NaClO 4 salt was prepared by a solution casting. The characteristic properties of PVA/NaClO 4 polymer composite electrolytes with ZrO 2 filler were studied using FTIR, X-ray diffractometer (XRD), FESEM, DSC, AFM, AC impedance method, and cyclic voltammeter. The sample containing 3 wt% ZrO 2 exhibits good mechanical strength, high conductivity, high dielectric constant and good electrochemical response at room temperature. The conduction mechanism of the composite can be represented by the correlated barrier hopping (CBH) model and the obtained frequency dependent S parameter obeys Almond-West Universal power law. Using Williams-Landel-Ferry (WLF) and Vogel Fulcher Tamman (VTF) equations equivalence correlated the dynamic fragility (m) and activation energy (E g ) with T g of polymer composites. Transport parameters were calculated using Rice and Roth model. The cyclic voltamograms shows that the prepared films were Pseudo-capacitive in nature. POLYM. COMPOS., 00:000-000, 2016.

Proton conducting diazanium hydrogen phosphate/poly(vinyl alcohol) electrolytes: Transport, electrical, thermal, structural, and optical properties

“…Ltd. Japan) of accuracy 0.001 mm. 14,15 The optical properties were studied using Shimadzu (Japan) ultraviolet (UV)-1800 UV-Visible spectrophotometer to record the absorbance and transmittance behavior of the DAHP/PVA composite in the wavelength range of 190-800. The X-ray diffractograms of the samples were recorded using a Bruker D8 Advance X-ray diffractometer (Bruker Corp. Germany) with Ni-filtered CuK a radiation of wavelength l ¼ 1.5406 Å with a graphite monochromator.…”

“…Its doping material dependent property enriches its applications. [12][13][14] Therefore, in this study, the polymer PVA is used as host matrix and DAHP salt as a proton donor. The main objectives of the present study are the optical and structural properties, transport and frequency-dependent conducting properties of DAHP/PVA composite films.…”

Influence of ZrO2 filler on physico-chemical properties of PVA/NaClO4 polymer composite electrolytes

“…The 20% NaClO 4 -doped PVA, using 0 to 5 wt% ZrO 2 nanoparticle-filled PVA composites, were prepared by the solution casting method [39,40]. The preparation of various concentrations of ZrO 2 -filled PVA/NaClO 4 composite films is shown in Fig.…”

“…So, the obtained viscous solution was ultrasonicated to get better dispersion and poured onto cleaned Petri glass plates and dried at room temperature. The dry films were peeled off and kept in vacuum desiccators [29,40]. Figure 1 represents schematically the preparation of polymer nanocomposite.…”

Conductivity and structural studies of PVA based mixed-ion composite polymer electrolytes

“…Extensive studies and research have been committed towards improvement in conductivity of solid polymer electrolyte materials at ambient temperature for their potential application in electrochemical devices. Several modifications such as incorporation of various salts [5][6][7][8][9][10][11], plasticizers [12][13][14] and fillers [15][16] in solid polymer electrolytes have been explored to improve their performance in electrochemical device applications. The exploration of new materials has been done during the past few decades that can replace the conventional materials with improved characteristics.…”