Electrical and electrochemical properties of magnesium ion conducting composite gel polymer electrolytes

摘要: The effect of micro- and nano-sized MgO SiO2 dispersion on the electrical electrochemical properties poly(vinylidene fluoride-hexafluoropropylene) (PVdF-HFP) based Mg2+ ion conducting gel polymer electrolyte has been investigated. electrolytes have characterized using conductivity, cationic transport number (t+) measurements cyclic voltammetry. A two-maxima feature observed in 'conductivity versus composition' curve at ~3 wt% 10–15 filler contents. highest conductivity obtained for dispersed ~1 × 10−2 S cm−1 3 ~9 10−3 15 content. value 't+' is found to be enhanced substantially with increasing amount (both nanoparticles), whereas case does not increase substantially. ~0.44 addition 10 nanoparticles. enhancement explained basis formation space-charge regions due presence : Mg2+-like species, which supports motion. substantial anodic cathodic peak currents particles electrolyte, cases micrometre-sized significant. nanocomposite predominantly anionic