Effect of ethylene carbonate plasticizer and TiO2 nanoparticles on 49% poly(methyl methacrylate) grafted natural rubber-based polymer electrolyte

Abstract

The effect of plasticizer and TiO 2 nanoparticles on the conductivity, chemical interaction and surface morphology of polymer electrolyte of MG49-ECLiClO 4 -TiO 2 has been investigated. The electrolyte films were successfully prepared by solution casting technique. The ceramic filler, TiO 2 , was synthesized in situ by sol-gel process and was added into the MG49-EC-LiClO 4 electrolyte system. Alternating current electrochemical impedance spectroscopy was employed to investigate the ionic conductivity of the electrolyte films at 25°C, and the analysis showed that the addition of TiO 2 filler and ethylene carbonate (EC) plasticizer has increased the ionic conductivity of the electrolyte up to its optimum level. The highest conductivity of 1.1×10 −3 Scm −1 was obtained at 30 wt.% of EC. Fourier transform infrared spectroscopy measurement was employed to study the interactions between lithium ions and oxygen atoms that occurred at carbonyl (C=O) and ether (C-O-C) groups. The scanning electron microscopy micrograph shows that the electrolyte with 30 wt.% EC posses the smoothest surface for which the highest conductivity was obtained.

Solid state metal-free eosin-Y dye sensitized solar cell based on PVdF-HFP electrolytes: combined effect of surface modified TiO2 and plasticizer on electrochemical and photovoltaic properties

“…Hence, the dissociation property of salts has increased and facilitates greater ion dissociation, which allows greater numbers of charge carriers for ionic transport. Also, PC helps to decrease the viscosity of the PVdF-HFP electrolyte system; therefore, the mobility of ions/charge carriers increased, and it provides a high ionic conductivity [64]. Figure 10b shows the variation of ionic conductivity of plasticized PVdF-HFP electrolytes with addition of different amounts of U-TiO 2 and S-TiO 2 .…”

Temperature dependence of the conductivity of plasticized poly(vinyl chloride)-low molecular weight liquid 50% epoxidized natural rubber solid polymer electrolyte

“…Previous researches reported that plasticizer such as EC exhibit high dielectric constant which can increase the number of mobile ions by weakening the Coulombic force between the anions and cations of the salt [29]. Besides, plasticizer creates and promotes more free volume in the electrolyte system, thus decreases the viscosity of the electrolyte making the mobility of ions became easier.…”

LiClO4 salt concentration effect on the properties of PVC‐modified low molecular weight LENR50‐based solid polymer electrolyte

“…After more than 30 years since the ionic conducting polymer electrolytes were first suggested by Fenton and Wright in 1973,6 SPEs systems still face the same particular problem of having low ionic conductivity at ambient temperature 4, 7, 8. To overcome this problem, several approaches have been made to improve the conductivity such as using different preparation methods; polymer blending; in situ thermal crosslinking; introducing the inorganic compound fillers such as ZnO, ZrO, SnO 2 , Al 2 O 3 , TiO 2 , NiO and many more into SPE system; irradiating electrolytes with gamma irradiation, UV irradiation; binary salts system; and adding of plasticizers (EC and PC) that have been reported by many researchers 5, 8–16. Among all these techniques, polymer blending is considered the most feasible technique as it can complement with advantages of other techniques and also enhances the electrical as well as physical properties of polymer electrolytes 17–19.…”