The Electrical and Thermal Properties of Sodium Sulfate Mixed with Lithium Sulfate, Yttrium Sulfate, and Silicon Dioxide

Abstract

Sodium sulfate mixed with lithium sulfate, yttrium sulfate, and silicon dioxide was prepared. The thermal and electrical properties of its phases were investigated. The samples are similar to the phase (a high temperature phase), which is appreciably effective for Na+ ionic conduction. Phase transformation was considerably suppressed by mixing. Electromotive force (EMF) was measured, using as a solid electrolyte, by constructing an gas concentration cell. The measured EMF's at 823 and 773 K were in fairly good accordance with the calculated EMF's for inlet gas concentration between 30 ppm and 1%, and 500 ppm and 0.5%, respectively.