Method for forming solid electrolyte composite
AssigneeOwens-Illinois, Inc.
InventorsKenneth R. Kormanyos, Howard L. McCollister, Paul L. White
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Abstract
A solid electrolyte composite is provided which is suitable for use as the separating member between a sodium reservoir source and a sulfur reservoir source in a sodium-sulfur battery; the solid electrolyte composite is manufactured by providing a membrane of a crystalline ionic conductive sodium polyaluminate on a portion of a porous, anhydrous crystalline supporting body consisting of alpha-Al.sub.2 O.sub.3. The sodium polyaluminate is initially applied in the form of a precursor which is then subsequently heated to form the ionic conductive crystalline sodium polyaluminate membrane.
Claims9
A method for forming a solid electrolyte composite having a porous crystalline alpha-Al.sub.2 O.sub.3 exposed portion and an exposed ionic conductive crystalline sodium polyaluminate membrane portion comprising:
- contacting a surface of a porous, anhydrous, crystalline body consisting of alpha-Al.sub.2 O.sub.3 with a precursor which on a dry oxide basis substantially corresponds to a sodium polyaluminate composition and heating said contacted surface at a temperature and for a time sufficient to convert the precursor to a crystalline ionic conductive membrane of sodium polyaluminate and form said composite.
Dependencies are inferred from the claim text.