CONDUCTIVITY AND IONIC MOBILITY STUDIES ON Li2WO4-LiI- Al2O3 BY EIS AND NMR TECHNIQUES

Abstract

Li2WO4-LiI-Al2O3 solid electrolytes have been found to be a potential electrolyte for battery applications due to its high electrical conductivity at ambient temperature. The binary solid electrolyte with incorporation Al2O3 was prepared in solid state reaction and characterized by Electrical Impedance Spectroscopy (EIS) and 7Li Magic Angle Spinning (MAS) solid state Nuclear Magnetic Resonance (ssNMR) technique. Maximum electrical conductivity of 3.35x10-3 Scm-1 was recorded for the sample containing 20 wt.% of LiI. The conductivity improved up to 3.92x10-3Scm-1 as 5wt.% of Al2O3 was added into the optimum composition of the binary system. Mobility of the charge carrier in the sample was investigated and NMR result showed that the electrolyte with high ionic mobility contribute into high electrical conductivity.

Effects of Papyrus Plants (<i>Cyperus papyrus<i>) on the Physicochemical Parameters and Nutrient Levels of Water and Sediments in Yala Swamp Wetland in Western Kenya

“…The variation in electrical conductivity is closely According to [17], the variation and increase in electrical conductivity is closely dependent on the amount and mobility of charger carrier. This is so especially when a lot of pollutants dissolve forming ions.…”