A fast Ag+ ion conducting mixed glass system: x[0.75Agl:0.25AgCl]:(1-x)[Ag2O:CrO3]. Transport property and battery discharge characteristic studies

Ionic transport properties and battery discharge studies on the fast Ag+ ion conducting quenched mixed glass system x[0.75Agl:0.25AgCl]: (1 - x)[Ag2O:CrO3] are reported, where 0 less than or equal to x less than or equal to 1 in molar wt %. The conventional host Agl has been replaced by an alternative compound: 'a quenched [0.75Agl:0.25AgCl] mixed system'. The compositional ratio, for x = 0.75, exhibited the optimum conductivity, sigma similar or equal to 2.0 x 10(-3) S cm(-1) at 27 degrees C. Samples of the optimum conducting composition were prepared from the melt at two different cooling rates, namely about 10(2) K s(-1) and about 10(-2) K s(-1), referred to as quenched and annealed compositions respectively. The conductivity increase in the quenched composition has been attributed to the introduction of amorphousness due to rapid quenching. The structural and thermal analyses were carried out on material of the optimum composition. Various ionic transport parameters such as electrical conductivity (sigma), transference number (t(ion)), ionic mobility (mu) and drift velocity (v(d)) were measured as a function of temperature. The discharge characteristic of the solid state batteries fabricated, using the optimum conducting composition as electrolyte, were studied under different load conditions and some important cell parameters were computed from the discharge profile.