University System of Maryland

Adam Jolley

Eric D Wachsman

The present invention relates to rhomboidal phase bismuth oxide that maintains electric conductivity of at least about 1×10S/cm at temperature of about 500° C. for at least about 100 hours. In particular, the bismuth oxides of the invention have stable conductivity at a temperature range from about 500° C. to about 550° C.

Stable high conductivity oxide electrolyte

The present invention relates to rhomboidal phase bismuth oxide that maintains electric conductivity of at least about 1&#xd7;10S/cm at temperature of about 500&#xb0; C. for at least about 100 hours. In particular, the bismuth oxides of the invention have stable conductivity at a temperature range from about 500&#xb0; C. to about 550&#xb0; C.

The present invention is directed to solid NASICON electrolytes in which the zirconium site is doped with a 2+ oxidation state cation. The present invention is also directed to methods of making the solid electrolytes and methods of using the solid electrolytes in batteries and other electrochemical technologies.

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College Park, MD, United States of America

Adam Jolley