Electrical properties of a solid polymeric electrolyte of PVC–ZnO–LiClO4

Abstract

The ZnO filler has been introduced into a solid polymeric electrolyte of polyvinyl chloride (PVC)-ZnOLiClO 4 , replacing costly organic filler for conductivity improvement. Ionic conductivity of PVC-ZnO-LiClO 4 as a function of ZnO concentration and temperature has been studied. The electrolyte samples were prepared by solution casting technique. The ionic conductivity was measured using impedance spectroscopy technique. It was observed that the conductivity of the electrolyte varies with ZnO concentration and temperature. The temperature dependence on the conductivity of electrolyte was modelled by Arrhenius and Vogel-Tammann-Fulcher equations, respectively. The temperature dependence on the conductivity does not fit in both models. The highest room temperature conductivity of the electrolyte of 3.7×10 −7 Scm −1 was obtained at 20% by weight of ZnO and that without ZnO filler was found to be 8.8×10 −10 Scm −1 . The conductivity has been improved by 420 times when the ZnO filler was introduced into the PVC-LiClO 4 electrolyte system. It was also found that the glass transition temperature of the electrolyte PVCZnO-LiClO 4 is about the same as PVC-LiClO 4 . The increase in conductivity of the electrolyte with the ZnO filler was explained in terms of its surface morphology.

Fabrication and characterization of a solid polymeric electrolyte of PAN‐TiO2‐LiClO4

“…In Figure 7, the TiO 2 particles represented by the white grains are uniformly dispersed in the entire surface region. This result is in a good agreement with that reported in Ref 16. It can clearly be seen from Figure 6 that there are no TiO 2 particles distributed in the electrolyte.…”

“…It can clearly be seen from Figure 6 that there are no TiO 2 particles distributed in the electrolyte. The TiO 2 particles in the electrolyte will give a compensating effect on the transport properties of Li + ions, hence improving the conductivity of the electrolyte 16…”

Preparation and characterization of blended solid polymer electrolyte 49% poly(methyl methacrylate)-grafted natural rubber:poly(methyl methacrylate)–lithium tetrafluoroborate

“…The β-relaxation peak at 333 K was attributed to the main chain mobility below the glass transition temperature, T g of PMMA. This indicates that the increase in segmental motion of the polymeric chain will also enhance the transport of ions in the polymer blend, resulting in the conductivity enhancement above the relaxation temperature, 333 K. The increase in the segmental motion of polymeric chain flexibility in the electrolyte leads to the increase in the dissociation rate of Li + , thus improving the mobility of the charge carrier [38]. Despite the fact that the highest conductivity achieved by this electrolyte at this point, the value is still low to be applied in electrochemical devices as compared to the conventional system.…”

Effect of a ZnO addition on the thermal properties of diopside-based glass ceramics for LED packages

“…Diopside has comparatively high thermal conductivity of about 2.7 W/mK [11] and ZnO has high thermal conductivity of about 60 W/mK, nearly twice as high as that of Al2O3. It is also less expensive than Al2O3 [7,8,[11][12][13] For these reasons, in this study diopside and ZnO were chosen as the matrix and the filler, respectively, for the production of diopside/ZnO glass-ceramic composites. The effects of the ZnO content as a filler on the thermal conductivity, density, crystal phases generated, and microstructure were analyzed.…”