Abstract
Glass-ceramics are commonly used as sealing materials for planar solid oxide fuel cells (SOFCs). The major requirements of stack and module builders for these materials are the stability of the coefficient of thermal expansion (CTE), the excellent bonding (sticking) behaviour and the absence of volatile ingredients, which can lead to changes of the material properties and the sealing ability. In this study, the thermal stability of glasses in the BaO-Al2O3-La2O3-B2O3-SiO2 system was investigated, to develop a suitable sealing glass for planar solid oxide fuel cell operating at 800–850°C. The developed glasses were characterised through measurement of different properties, coefficient of thermal expansion (CTE), glass transition temperature (T g), dilatometric softening temperature (T d), crystallisation behaviour during prolonged heat-treatment, density etc. At a target operating temperature of 750°C, the long-term coefficient of thermal expansion (CTE) of one particular composition (G4) was found to be particularly stable, due to devitrification to a mixture of glasses and ceramic phases.
Similar content being viewed by others
References
Singhal, S.C.: Solid oxide fuel cells: facts and figures. In: Irvine, J.T.S., Corner, P. (eds.) Past, present and future, perspectives for SOFC technologies, pp. 1–2. Springer London Heildelberg, New York Dordrecht
Smeacetto, F., Salvo, M., Cho, J., Boccaccini, A.R.: Glass-ceramic seal to join Crofer 22 APU alloy to YSZ ceramic in planar SOFCs. J European Ceramic Soc. 28(1), 61–68 (2008)
Singh, R.N.: Sealing technology for solid oxide fuel cells (SOFC). Int JAppl Ceram Technol. 4, 134–144 (2007)
Smeacetto, F., Salvo, M., Ferraris, M., Casalegno, V., Asinari, P.: Glass and composite seal for the joining of YSZ to metallic interconnect in solid oxide fuel cells. J. European Ceramic Soc. 28(1), 611–616 (2008)
Menzler, N.H., Sebold, D., Zahid, M., Gross, S.M., Koppitz, T.: Interaction of metallic SOFC interconnect materials with glass-ceramic sealant in various atmosphere. J Power Sources. 145, 46–57 (2005)
Namwong, P., Laorodphan, N., Thiemson, W., Jaimasith, M., Wannakon, A., Chairuangsri, T.: A barium-calcium silicate glass for use as seals in planar SOFCs. Chiang Mai J Sci. 37(2), 231–242 (2010)
Sohn, S.B., Choi, S.Y., Kim, G.H., Song, H.S., Kim, G.D.: Stable sealing glass for planar solid oxide fuel cell. J Non-Cryst Solids. 297, 103–112 (2002)
Basu, R.M.: Materials for solid oxide fuel cells in recent trends in fuel cell science and technology, jointly published by Anamaya Publisher, New Delhi (India) and springer. New York, Chapter. 12, 284–329 (2006)
J.W. Fergus, Sealants for solid oxide fuel cells, Vol. [147], (2005), 46–57.
Smeacetto, F., Salvo, M., Ferraris, M., Casalegno, V., Asinari, P., Chrysanthou, A.: Characterization and performance of glass-ceramic sealant to join metallic interconnects to YSZ and anode-supported-electrolyte in planar SOFCs. J. European Ceramic Soc. 28, 2521–2527 (2008)
Lahl, N., Sing, K., Singheiser, L., Hilpert, K., Bahadur, D.: Crystallisation kinetics in AO-Al2O3-SiO2-B2O3 glasses (A=Ba, Ca, Mg). J Mater Sci. 35, 3089–3096 (2000)
Ghosh, S., Kundu, P., Sharma, A.D., Basu, R.N., Maiti, H.S.: Microstructure and property evaluation of barium aluminosilicate glass-ceramic sealant for anode-supported solid oxide fuel cell. J. European Ceramic Soc. 28, 69–76 (2008)
Reis, S.T., Brow, R.K.: Designing sealing glasses for solid oxide fuel cell. JMEPEG. 15, 410–413 (2006)
Wang, M.T., Cheng, J.S.: Viscosity and thermal expansion of rare earth containing soda–lime–silicate glass. J Alloys Compd. 504(1), 273–276 (2010)
Acknowledgements
The authors wish to thank the Scientific & Technological Research Council of Turkey (Project: 1919B011303387) for its generous financial support of this study.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Kurama, S., Saydam, G. Investigation properties of BaO/RO-Al2O3-R2O3-B2O3-SiO2 glass-ceramic sealants for solid oxide fuel cell. J Aust Ceram Soc 53, 293–298 (2017). https://doi.org/10.1007/s41779-017-0036-8
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s41779-017-0036-8