The sodium sulfur battery system: Investigation of the solid electrolyte beta alumina
Abstract
Optimization procedures for the synthesis of beta alumina electrolyte ceramics are treated. Solid phases organized in the microstructure of the electrolyte and the corresponding stability of the ceramics against atmospheric attacks of H2O and CO2 were investigated. Thermoanalytical and X-ray diffraction studies of MgO- and Li2O-stabilized beta alumina samples demonstrate severe problems in the technological approach to synthesize pure MgO stabilized electrolyte ceramics of compositions 1Na2O.1MgO.5Al2O3 due Na2MgAl10O17 Monophasic beta-alumina type ceramic has the highest stability against atmospheric attack by H2O and CO2. Small variations in stoichiometry or in the temperature/time program of synthesis induce unwanted phases.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- June 1983
- Bibcode:
- 1983STIN...8411416F
- Keywords:
-
- Aluminum Oxides;
- Ceramics;
- Sodium Sulfur Batteries;
- Solid Electrolytes;
- Chemical Attack;
- Energy Technology;
- Microstructure;
- Stoichiometry;
- X Ray Diffraction;
- Electronics and Electrical Engineering