Superionic Conducting Glasses: Glass Formation and Conductivity in the AgI ‐ Ag2 O ‐ P 2 O 5 System

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Abstract
A glass‐forming region was found in the system at a mole ratio ≦3. Glass transition temperatures and conductivities at 25°C for the glasses are, respectively, expressed by where , , and are mole fractions of each component in the glass. These equations show that and are primarily governed by the content. From the results, it is speculated that a portion of the silver ions forms partially covalent bonds Ag‐O‐P. Conductivities at room temperature range from 10−3 to 10−2 Ω−1 cm−1. The advantages of glass formation for obtaining solid electrolytes with higher ionic conductivity are shown. Transport numbers of silver ions are approximately unity in the glasses.

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