Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5437758 | Ceramics International | 2017 | 16 Pages |
Abstract
This study focuses on the design, characterization and testing of a new glass-ceramic sealant for Na-based batteries. The thermo-mechanical properties as well as the sintering behaviour of the new sealant have been characterized by thermal analyses and x-rays diffraction studies. The exothermic peak in the differential thermal analysis plots has been assigned to the crystallization of a calcium sodium aluminum silicate (anorthite sodian), as confirmed by the X-ray diffraction data. The activation energy for the crystallization was found to be 482.3 kJ/mol. The compatibility at the interface between the glass-ceramic sealant and beta- and alpha-alumina is examined before and after corrosion test with molten Na. Tests of this novel silica-based glass-ceramic sealant with Na at 300 °C for 250 h in a real battery operating conditions showed no reactions with Na or evidence of corrosion, as demonstrated by SEM post mortem examinations after cell disassembly.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
F. Smeacetto, M. Radaelli, M. Salvo, D. Di Modugno, A.G. Sabato, V. Casalegno, M. Broglia, M. Ferraris,