XRD, Conductivity studies on PVA-PEG blend based Mg2+ ion conducting polymer electrolytes

Abstract

Poly vinyl alcohol (PVA) and polyethylene glycol (PEG) blend based Mg 2+ ion conducting polymer electrolytes have been prepared. Polyethylene glycol (PEG) with three different molecular weights 200,400 and 600 has been used and the effect of this molecular weight on the ionic onductivity of the electrolytes is studied through XRD, ac impedance technique. The analysis shows that the PEG with mol.wt 600 is more effective in reducing the crystallinity and enhancing the conductivity properties of the electrolytes.

Synthesis and Structural Characterization Studies on Solid Polymer Electrolyte System with Magnesium Triflate as Host Salt, EC as Plasticizer and MgO as Nanofiller

“…Magnesium electrochemistry at or near ambient temperature is rather undertaken by few researchers and a substantial research effort will be required in order to explore their possible use in electrochemical devices. The significant attention towards magnesium ion conducting polymer electrolyte system is due to important characteristics of the magnesium metal such as high charge density, considerably negative electrode potential, and high melting point (922 K), low cost, ease of handling, disposal and low toxicity [7][8][9] . The trifluoromethanesulfonate (triflate) ion, CF 3 SO 3 -, has proved to be an extremely important probe of ionic association in polymer salt complexes.…”