On the Relation between Electrical and Acoustical Properties of ION Conductivite Glasses

The technological interest in fast ionic conductivity in glassy materials is increased in last years for various solid state electrochemical devices such as solid-state batteries, electrochronic displays, and sensors. The ion conductive glasses have several advantages comparing with crystalline materials because of their easy preparation, their stability, the large available compositionranges and reasonable cost. It is known that the investigation of conductivity spectra of ionic glasses can reflect the basic features ofthe relaxation and transport mechanisms of the mobile ions and the high ion conductivity at room temperature is the most important criterion which should be meet the fast ion conductive glasses. However, the relaxation and transport mechanisms can be investigated also by acoustic methods, that can have some advantages comparing to electrical ones as the high sensitivity, absence of contact phenomena and so on.In the contribution we present some electrical and acoustical properties of glasses prepared in the system CuI-CuBr-Cu20-(P20j+Mo03). The main purpose of the contribution is to contribute to the investigation of ion transport mechanisms in these fast ion conductive glasses and to determine the relation between electrical and acoustical properties considering the various glass compositions.