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Journal of Inorganic Materials

Journal of Inorganic Materials >

2008 , Vol. 23 >Issue 4: 841 - 846

DOI: https://doi.org/10.3724/SP.J.1077.2008.00841

Research Paper

Al2O3-based Compressive Seals for Planar Intermediate Temperature Solid Oxide Fuel Cells

  • SANG Shao-Bai ,
  • LI Wei ,
  • PU Jian ,
  • LI Jian
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  • (College of Material Science and Engineering, Huazhong University of Science and Technology, State Key Laboratory of Material Processing and Die & Mould Technology, Wuhan 430074, China)

Received date: 2007-07-20

  Revised date: 2007-09-24

  Online published: 2008-07-20

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Abstract

The Al2O3-based seals were prepared by tape casting process using Al2O3 and Al fine powders as primary starting materials. The materials’ hermetic properties were tested in simulative environment of the sealing of planar ITSOFC, and the materials after hermetic property test were characterized by X-ray diffraction and scanning electron microscope. The results show the flexible Al2O3-based seals are successfully prepared by appropriate tape casting process. The Al2O3-based seals have favorable sealing characteristics even though the compressive stresses are quite low. The leak paths are reduced and the tortuosity of leak paths are aggrandized when Al fine powders are added into Al2O3-based seals, which enhance the materials’ hermetic property and mid-term stabilities. It is feasible that Al2O3-based seals with 10wt%--20wt% Al fine powders prepared by tape casting are used as sealing materials for the planar ITSOFCs.

Key words： solid oxide fuel cell; seal; Al2O3; tape casting

Cite this article

SANG Shao-Bai , LI Wei , PU Jian , LI Jian . Al2O3-based Compressive Seals for Planar Intermediate Temperature Solid Oxide Fuel Cells[J]. Journal of Inorganic Materials, 2008 , 23(4) : 841 -846 . DOI: 10.3724/SP.J.1077.2008.00841

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