Title :
Fabrication and testing of beta"-alumina electrolyte assemblies
Author :
Addington, L.A. ; Autry, T.A. ; De Gruson, J.A.
Author_Institution :
Eagle-Picher Ind. Inc., Joplin, MO, USA
Abstract :
Process development has been carried out to enhance the properties of β"-Al2O3 electrolytes manufactured in-home by the electrophoretic deposition (EPD) process. This development included solid-state and resin synthesis routes. Alternate α-Al 2O3 precursors and calcining temperatures were evaluated for the solid-state synthesis process. Sintered electrolyte specimens were characterized for chemical and phase composition and for strength. In addition, electrical resistivity determinations were made over the temperature range of 250 to 400°C using complex plane AC impedance analysis. Electrolyte assemblies of 40 Ah capacity were fabricated by sealing the EPD β"-Al2O3 tubes to α-Al2O3 headers. Electrolyte assemblies have been tested in Na/S cells at current densities to 373 mA/cm2
Keywords :
alumina; cells (electric); electrolytes; electrophoretic coating techniques; testing; α-Al2O3 precursors; β"-Al2O3; 250 to 400 degC; Al2O3; Na-S cells; beta"-alumina electrolyte assemblies; calcining temperatures; chemical composition; complex plane AC impedance analysis; electrical resistivity; electrophoretic deposition; phase composition; resin synthesis; sintered electrolyte specimens; solid-state synthesis process; testing; Assembly; Calcination; Chemicals; Electric resistance; Fabrication; Manufacturing processes; Resins; Solid state circuits; Temperature; Testing;
Conference_Titel :
Power Sources Symposium, 1992., IEEE 35th International
Conference_Location :
Cherry Hill, NJ
Print_ISBN :
0-7803-0552-3
DOI :
10.1109/IPSS.1992.281974
