Ionic conductivities of CH3I

Abstract

%V,-,M.A-,,2 (M = Ti, Zr, Sn, Pb) was prepared by solid state reactions. AI1 the substituted phases retain the a-phase structure for x < 0.20. When x 2 0.20, the high-oxygen-io~c conducting 'y-phase is stabilized at room temperature. The highest ionic conductive was observed in Bi~V~.,~Ti~.~~O~~.~~ with aj, n = 4 X 10F4 S/cm. The higher conductivity of substitute phases compared with the parent compound Bi,V,O,, is correlated with increased oxygen vacancies generated by aliovafent substitutions. The highest ionic conductivity in Ti substituted system is attributed to its lower activation energy.