Surface Degeneration of Li3PS4–LiI Glass-Ceramic Electrolyte by Exposure to Humidity-Controlled Air and Its Recovery by Thermal Treatment

Sulfide-based solid electrolytes are desirable for use in all-solid-state batteries owing to their high ionic conductivity and plasticity. However, they generally degrade upon exposure to water and can generate toxic hydrogen sulfide even in dry-room atmospheres. To prevent their degradation, surfac...

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