Electrical Properties Of Barium Titanate Dispersed Silver Sulphate
S. W. Anwane
Volume 4, Issue 4, Page 300-309, Year 2013, Current Issue | DOI: 10.5185/amlett.2012.8404
Keywords: Barium titanate dispersed silver sulphate; fast ionic conductors; solid electrolyte; silver ion conductor; heterogeneous mixtures.
Composite materials which are heterogeneous mixtures of two or more solid phases offer value added properties for device applications. When ion conducting Ag2SO4 is dispersed with insulating BaTiO3, enhanced electrical properties are observed along with improved surface morphology. The electrical properties have been derived from the Complex Impedance Spectroscopic studies. Arrhenius Plot, Concentration and Temperature dependent conductivity and activation energy have also been studied. The ionic transference number of the composite system remains unchanged on dispersion thereby retaining its category as Solid Ionic Conductor (SIC). Moreover, 30 Wt% BaTiO3 dispersed in Ag2SO4 offers promisingly enhanced ionic conductivity and reduced activation energy of ion migration. This material has further scope for its utilization as a silver ion conductor in electrochemical applications like solid state batteries, gas sensors etc. The results obtained fit well in the established theories of composites.