Abstract

The thermal reaction products in the Ag2S-Ag1.70 Te-Ag4P2O7, Ag2S-Ag1.70 Te-Ag3PO4 and Ag2S-Ag1.70 Te-AgPO3 systems were found to exhibit both high ionic and electronic conductivity at room temperature. For example, the ionic conductivities of (Ag2S)0.69 (Ag1.70Te)0.285 (Ag4P2O7)0.025, (Ag2S)0.5(Ag1.70Te)0.45 (Ag3PO4)0.05 and (Ag2S)0.65 (Ag1.70Te)0.25(AgPO3)0.1 were 0.25, 0.25 and 0.22 (ohm. cm)−1 at 25°C, respectively. Differential thermal analysis and X-ray diffraction showed that these high ionic conductivity solids had an α-Ag2S-like structure at room temperature.

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