JMS_V2_N3_RP6 Dilraj Preet Kaur Journal on Material Science 2347–615X 2 3 35 38 Ionic Liquids, Ionic Conductivity, Polymer Gel Electrolytes, Thermal Stability Poly(vinylidene fluoride-co-hexafluoropropylene) (PVdF-HFP)-ionic liquid gel electrolytes have been synthesized using ionic liquid 2,3-dimethyl-1-hexylimidazolium bis(trifluoromethanesulfonyl)imide (DMHxImTFSI) and propylene carbonate. Ionic conductivity of the ionic liquid is 2.47 x 10 power -3 Scm at 30o C and polymer gel electrolytes also possess conductivity of the same order. The dependence of ionic conductivity on the concentration of ionic liquid, polymer and temperature has been studied. TGA/DSC ( studies shows that the polymer gel electrolyte containing ionic liquid is thermally stable upto 100oC. October - December 2014 Copyright © 2014 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=2967