Evaluation of the suitability of various glass sealant—alloy combinations under SOFC stack conditions
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The suitability of combinations of sealing material and alloy under simulated SOFC stack conditions has been evaluated by a novel test method. This method is based on test items of two metallic sheets, joined together with a glass or glass-ceramic sealant. The outer side of the sample is exposed to ambient atmosphere, whereas the inner side can be exposed to different gas compositions. The whole set-up is placed in a furnace. Optionally, an external voltage can be applied across the sheets.
Experiments revealed that the chemical and electrical behaviour of the sandwich samples strongly depends on the experimental conditions. Under oxidative conditions (air) no undesirable interactions take place, which detrimentally affect the electrical properties, indicating satisfactory suitability of the tested sealant—alloy combinations. However, different results were obtained when SOFC conditions were simulated by the use of a dual environment including air on the outer part and hydrogen on the inner part of the sample. Under these test conditions, and depending on the chemical composition of the alloy, a strong decrease of the resistance, measured between the two metallic sheets, was observed, due to excessive chemical reactions between the sealant, the alloy, and the surrounding gas atmosphere.
Well-chosen test conditions can more closely simulate real stack conditions, and as a result, the electrical, physical, and chemical behaviour of investigated samples is closer to that of materials applied in real SOFC stacks. Therefore, before performing model experiments simulating complete SOFC devices, it is recommended that a critical analysis should be made of the experimental conditions as present in SOFC devices.
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- L. G. J. DE HAART, I. C. VINKE, A. JANKE, H. RINGEL and F. TIETZ, “New Developments in Stack Technology for Anode Substrate Based SOFC,” in Proceedings Solid Oxide Fuel Cells VII, edited by H. Yokokawa and S. C. Singhal (Electrochemical Society Proceedings, Pennington, USA,) (2001) Vol. 2001-16 p. 111.
- Z. YANG, J. W. STEVENSON and K. D. MEINHARDT, Solid State Ion. 160 (2003) 213.
- K. EICHLER, G. SOLOW, P. OTSCHIK and W. SCHAFFRATH, J. Europ. Ceram. Soc. 19 (1999) 1101.
- S. B. SOHN, S. Y. CHOI, G. H. KIM, H. S. SONG and G. D. KIM, “Stable Sealing Glass for Planar Solid Oxide Fuel Cell,” J. Non-Cryst. Solids 297 (2002) 103.
- T. SCHWICKERT, P. GEASEE, A. JANKE, U. DIEKMANN and R. CONRADT, “ Electrically Insulating High-Temperature Joints for Ferritic Chromium Steel,” in Proc. Intern. Brazing and Soldering Conference, (Albuquerque, New Mexico, 2000) p. 116.
- W. J. QUADAKKERS, J. PIRÖN ABELLÁN, V. SHEMET and L. SINGHEISER, Mater. High Temperat. 20(2) (2003) 115.
- J. PIRON-ABELLAN, V. SHEMET, F. TIETZ, A. GIL, L. SINGHEISER and W. J. QUADAKKERS, in Proceedings of Fifth European Solid Oxide Fuel Cell Forum, 1–5 July 2002, Lucerne/Switzerland, Vol. 1, p. 248.
- K. L. LEY, M. KRUMPELT, R. KUMAR, J. H. MEISER and I. BLOOM, J. Mater. Res. 11(6) (1996) 1489.
- J. PIRON-ABELLAN, V. SHEMET, F. TIETZ, A. GIL, L. SINGHEISER and W. J. QUADAKKERS, SOFC-VII, June 3-8,2001, EPOCHAL, Tsukuba, Japan, Proceedings of The Electrochemical Society, Pennington, NJ, USA, 2001, Vol. 2001-16, p. 811.
- Z. YANG, K. S. WEIL, D. M. PAXTON and J. W. STEVENSON, “Selection and Evaluation of Heat-Resistant Alloys for SOFC Interconnect Applications,” J. Electrochem. Soci. 150(9) (2003) A1188.
- T. SCHWICKERT, P. GEASEE, I. KREUTZER, U. REISGEN and R. CONRADT, “Characterization of the Bonding Strength of Glass Ceramic Steel Joints,” in Proceedings of the “5th European Solid Oxide Fuel Cell Forum,” edited by J. Huijsmans, The European Fuel Cell Forum, (Switzerland) (2002) p. 319.
- T. J. ARMSTRONG, M. A. HOMEL and A. V. VIRKAR, “Evaluation of Metallic Interconnects for Use in Intermediate Temperature SOFC,” in Proceedings of the International Syposium “Solid Oxide Fuel Cells VIII,” edited by S. C. Singhal and M. Dokiya (The Electrochemical Society, 2002) Vol. 2003-07, p. 841.
- T. HORITA, Y. XIONG, K. YAMAJI, N. SAKAI and H. YOKOKAWA, J. Electrochem. Soc. 150(3) (2003) A243.
- P. FRIEHLING and S. LINDEROTH, “Evaluation of Ferrite Stainless Steels as Interconnects in SOFC Stacks,” in Proceedings of the “5th European Solid Oxide Fuel Cell Forum,” edited by J. Huijsmans, The European Fuel Cell Forum, Switzerland 2002, p. 855.
- L. JIAN, J. HUEZO and D. G. IVEY, J. Power Sourc. 123 (2003) 151.
- K. HUANG, P. Y. HOU and J. B. GOODENOUGH, Solid State Ionics 129 (2000) 237–250.
- Z. YANG, M. WALKER, G. XIA, P. SINGH and J. W. STEVENSON, Electrochem. Solid-State Lett. 6(10) (2003) B35.
- K. NAKAGAWA, Y. MATSUNAGA and T. YANAGISAWA, Mater. High Temperat. 18(1) (2001) 51.
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- Evaluation of the suitability of various glass sealant—alloy combinations under SOFC stack conditions
Journal of Materials Science
Volume 40, Issue 7 , pp 1583-1592
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- 1. Institute for Materials and Processes in Energy Systems, D-52425, Jülich, Germany
- 2. Central Department of Technology, D-52425, Jülich, Germany