Ionic transport studies in Sn(1-x)KxF(2-x) type solid electrolytes

The ionic conductivity of Sn(1-x)KxF(2-x) systems has been investigated as a function of composition and temperature using complex impedance spectroscopy. These materials have been prepared by normal solid state reaction method and characterized through XRD and DSC. The highest conducting sample has been prepared through mechanochemical synthesis technique in addition to solid state reaction method. The universal scaling behavior of the real and imaginary part of the impedance including complex impedance plots indicating temperature independent relaxation behavior has been demonstrated. This result is further supported by the scaling behavior of the real part of the conductivity. (C) 2012 Elsevier Ltd. All rights reserved.