Abstract
PbX2-PbO-SiO2 (X=Cl, Br and I) glasses were prepared and their electrical properties were investigated. The sole carrier for these glasses is the X- ion, which was estimated from the EMF (electromotive force) of the X2 gas concentration cell and the electrical properties. The ionic conductivity was enhanced with a decrease in ionic radius and increase in content of the X- ion in the glasses. The conductivities for the glass plates are about one order of magnitude higher than those for the pellets prepared from glass powder. For the X=I system, a maximum conductivity of 4.5×10-7S⋅cm-1 at 373K was obtained for the composition 0.59PbI2⋅0.31PbO⋅0.10SiO2. The glass formation region was determined for the PbI2-PbO-SiO2 system.
