23. Ferritic Stainless Steel SOFC Interconnects with Thermally Grown (Mn, Co)3O4 Spinel Protection Layers

  1. Narottam P. Bansal
  1. Zhenguo Yang,
  2. Guanguang Xia,
  3. Steve P. Simner and
  4. Jeffry W. Stevenson

Published Online: 26 MAR 2008

DOI: 10.1002/9780470291245.ch23

Advances in Solid Oxide Fuel Cells: Ceramic Engineering and Science Proceedings, Volume 26, Number 4

Advances in Solid Oxide Fuel Cells: Ceramic Engineering and Science Proceedings, Volume 26, Number 4

How to Cite

Yang, Z., Xia, G., Simner, S. P. and Stevenson, J. W. (2005) Ferritic Stainless Steel SOFC Interconnects with Thermally Grown (Mn, Co)3O4 Spinel Protection Layers, in Advances in Solid Oxide Fuel Cells: Ceramic Engineering and Science Proceedings, Volume 26, Number 4 (ed N. P. Bansal), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470291245.ch23

Author Information

  1. Pacific Northwest National Laboratory, 902 Battelle Blvd, Richland, Washington 99352

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2005

ISBN Information

Print ISBN: 9781574982343

Online ISBN: 9780470291245

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Keywords:

  • LSCM;
  • stainless steels;
  • spinel protection;
  • anode-supported cell tested;
  • SEM/EDS

Summary

To protect solid oxide fuel cells (SOFC5) from chromium poisoning and improve metallic interconnect stability, manganese cobaltite spinel protection layers with a nominal composition of Mn1.5Co1.5O4 were thermally grown on ferritic stainless steels. Thermal, electrical and electrochemical investigations indicated that the spinel protection layers not only significantly decreased the contact resistance, but also effectively acted as a mass barrier to both the oxygen inward and the chromium outward diffusion. A long-term thermal cycling test demonstrated excellent structural and thermomechanical stability of these spinel protection layers.