ABSTRACT
Nowadays, lithium ion batteries become one of the most important energy storage technologies in all fields of development in the contemporary world. The most promising direction in the optimization of lithium batteries is the synthesis of a solid polymer electrolyte (SPE). This type of electrolyte can exclude the majority of the safety and ecological hazards, due to its construction. The main disadvantage of all types of the SPE is a low ionic conductivity at ambient temperature. One of the ways to improve its conductivity is the incorporation of inorganic fillers into SPE to obtain a novel composite polymer electrolyte (CPE).
Membranes were prepared by casting of an organic polymer solution (solvent casting technique), followed by drying to evaporate the solvent. CPE based on PVdF were obtained to enhance their electrochemical properties. Micro- and nano-particles of titanium oxide (IV) was used as a filler, lithium per chlorate as a doping salt.
The effect of the filler was investigated by SEM, TG-DSC, Tensile strength and Galvanostatic pulse method. The CPE showed good results in ionic conductivity (1.01 mS/cm), thermal stability (range from 25–165°C) and mechanical strength (4.5% at 6.9 MPa).
