An investigation was made of a new system of Ag+-conducting 2-phase composite electrolytes of the form, (1-x)(0.75AgI,0.25AgCl)-xSnO2, where x ranged from 0 to 50wt% (tables 1 and 2). A so-called quenched-and-annealed (0.75AgI,0.25AgCl) solid solution was used as the major phase; instead of the usual AgI host matrix. Particles of SnO2, which were about 10μ in size, were dispersed in the matrix. It was found that a composition with x = 0.2 exhibited a room-temperature conductivity enhancement of more than 8 times with regard to the annealed matrix, and an enhancement of about 3 times with regard to the quenched matrix. The enhancement of the conductivity of the 2-phase composite electrolyte was attributed to an increase in the ionic mobility at room temperature.

R.C.Agrawal, R.K.Gupta: Journal of Materials Science, 1997, 32[16], 3327-33

Table 1

Room-Temperature Conductivity of

(1-x)(0.75AgI,0.25AgCl)-xSnO2 Composites

Table 2

Conductivity Parameters for

(1-x)(0.75AgI,0.25AgCl)-xSnO2 Composites