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US 4,539,276 AGranted
Solid electrolyte
AssigneeBrown, Boveri & Cie AG
InventorFriedrich Harbach
Life of this patent
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Abstract
Solid electrolyte consisting of a ceramic of the aluminum oxide-and-sodium oxide type. The ceramic forming the solid electrolyte has a composition according to the formula ##EQU1## and consists X-ray-wise 100% of a fully stabilized .beta."--Al.sub.2 O.sub.3 phase; wherein A stands for an alkali metal, silver, hydrogen or a hydrogen-containing compound; and M.sup.I and M.sup.II are elements which furnish mono- or bivalent ions; and z.sub.1 and z.sub.2 have values between 0 and 1, and the sum of z.sub.1 +2z.sub.2 is between 0.4 and 0.9.
Claims10
A solid electrolyte ceramic having a composition according to the general formula:
- ##EQU6## wherein A stands for an alkali metal, silver, hydrogen or a hydrogen-containing compound;
- M.sup.I and M.sup.II are elements which furnish mono or bivalent ions;
- z.sub.1 and z.sub.2 each have a value of 0 to 1 with the proviso that the sum of z.sub.1 +2z.sub.2 is between 0.4 and 0.9 and wherein the composition consists of a fully stabilized .beta."--Al.sub.2 O.sub.3 as determined by X-ray diffraction.
Dependencies are inferred from the claim text.