OPTIMIZATION OF ELECTROSPUN POLYMER ELECTROLYTE BASED ON PVA-K2CO3-SIO2-CELLULOSE COMPOSITE FOR IMPROVED ELECTROCHEMICAL PROPERTIES

Recent development in portable electronics has promoted a growing demand for high performing energy storage systems. One of the most important component that provide charge carriers in any energy storage devices is electrolyte. The electrolyte is very vital providing ionic conductivity and permitting charge on electrodes within the system. Among the electrolytes explored, gel polymer electrolytes (GPE) are essential due to their safety record. However, low ionic conductivity and potential window are the main obstacle restricting their daily application. In this study, an un plasticized and plasticized GPE materials based on polyvinyl alcohol (PVA), salt (K2CO3) and plasticizer (SiO2) with improved ionic conductivity and potential window were
explored. The optimum electrochemical performance was exhibited by plasticized GPE sample with 15 wt.% SiO2 (PKS15), having optimum ionic conductivity of 3.25 × 10–4
and 7.86 × 103 mScm1 at ambient temperature and at 373.15 K, respectively, and potential window of 3.35 V.