Thermal Stability Investigation of a Newly Developed Sealing Glass as IT-SOFC Sealant

doi:10.3724/SP.J.1077.2006.00867

Abstract

Abstract: A sealing glass, based on the SiO₂-B₂O₃-BaO-La₂O₃-ZrO₂-Y₂O₃ system, was developed for intermediate temperature solid oxide fuel cells (ITSOFCs). The coefficient of thermal expansion (CTE) of the glass is 9.8×10-6/K (RT～631℃), very close to that of 8YSZ electrolyte. The glass shows a very good thermal stability, even after heat-treatment at 700℃ for 300h, little change in CTE detected. The investigations also reveal that the glass is chemically compatible with 8YSZ electrolyte and no obvious interfacial reaction can be observed after the glass contacting with 8YSZ at 700℃ for 300h.

Key words: intermediate temperature solid oxide fuel cells (ITSOFCs), sealing glass, thermal stability, coefficient of thermal expansion

CLC Number:

TQ171

PENG Lian,ZHU Qing-Shan,XIE Zhao-Hui,HUANG Wen-Lai. Thermal Stability Investigation of a Newly Developed Sealing Glass as IT-SOFC Sealant[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2006.00867.

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Thermal Stability Investigation of a Newly Developed Sealing Glass as IT-SOFC Sealant

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