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Corrosion of vitreous electrolytes by molten sulphur

Authors
Journal
Solid State Ionics
0167-2738
Publisher
Elsevier
Publication Date
Volume
24
Issue
2
Identifiers
DOI: 10.1016/0167-2738(87)90018-x

Abstract

Abstract Differential scanning calorimetry confirms that corrosion of Na 2O-containing glasses by molten sulphur leads to the formation of sodium polysulphides. Carbonated surface layers are removed during an “initial reaction”. Continuing reaction with the glass substrate depends on the presence of traces of H 2O in the sulphur (implying an ion-exchange mechanism), and is a slow process even at 300°C. With proper care, and with satisfactory drying procedures, corrosion can be prevented and so a wide range of highly conductive glasses could find application as electrolytes in sodium-sulphur batteries.

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