Study of a Beta-Alumina Electrolyte for Sodium-Sulfur Battery

The structural properties of sodium aluminates (beta‐aluminas) as ionic conductors have been studied. The ‐diagram for above 84 mole per cent between 1100° and 1600° is described. The fabrication of closedend tubes (for use as battery electrolyte) by electrophoretic deposition is shown to give a useful and reproducible product. Finally, the physical and electrical properties of sodium‐conducting ceramics prepared in this way are evaluated.