Y2O3-BaO-SiO2-B2O3-Al2O3 glass sealant for solid oxide fuel cells |
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Authors: | Shouguo Huang |
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Affiliation: | Laboratory for Dielectric Functional Materials, School of Physics and Materials Science, Anhui University, Hefei 230039, PR China |
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Abstract: | A glass based on Y2O3-BaO-SiO2-B2O3-Al2O3 (named YBA) has been investigated as sealant for planar solid oxide fuel cells (SOFCs). The YBA glass has been systematically characterized by differential thermal analysis, dilatometer, scanning electron microscopy, impedance analysis, and open circuit voltage to examine their suitability as sealant. The coefficient of thermal expansion of YBA is 11.64 × 10−6 K−1 between 323 and 873 K. The resistivity is 9.1 × 104 Ω cm at 800 °C. The glass sealant is found to be well adhered with other cell components, such as electrolytes and stainless steels, at an optimum sealing temperature of 800 °C. All measured results showed that the YBA glass appears to be a promising sealant for SOFCs. |
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Keywords: | Fuel cells Thermal expansion Glass Sealant |
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