3. Single-Step Co-Firing Technique for SOFC Fabrication

  1. Narottam P. Bansal
  1. Guosheng Ye1,
  2. Feng Ju1,
  3. Chuangang Lin1,
  4. Srikanth Gopalan1,
  5. Uday Pal1 and
  6. Donald Seccombe2

Published Online: 26 MAR 2008

DOI: 10.1002/9780470291245.ch3

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

Ye, G., Ju, F., Lin, C., Gopalan, S., Pal, U. and Seccombe, D. (2005) Single-Step Co-Firing Technique for SOFC Fabrication, 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.ch3

Author Information

  1. 1

    Boston University, Brookline, MA 02446

  2. 2

    BTU International, North Billerica, MA 01862

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:

  • engelhard;
  • kronecker;
  • bordia;
  • gillia;
  • hypermer

Summary

One-step co-sintering process is the desired low-cost manufacturing process for planar anode-supported solid oxide fuel cell (SOFC) manufacturing. However, a successful one-step cofiring of the multi-layer structure requires that we are able to lower sintering temperature to minimize chemical interaction between the various layers (components) and the distortion of the structure (camber) due to mis-match in thermo-mechanical and physical properties of the individual layers. For the yttria-stabilized zirconia (YSZ) electrolyte material, it was observed that by adding 0.2 mole% of nano-sized alumina to submicron-sized YSZ, the relative density increased from 73% to over 93% at a sintering temperature of 1250°C and there is no adverse impact of Al2O3 on the electrical conductivity. Initial experimental results indicated that the sintering shrinkage and thickness of the pre-reduced NiO-YSZ anode support are extremely important for controlling the camber (distortion) that develops during the co-firing steps. A detailed finite element model is being developed to guide us in minimizing the experiments needed in selecting the processing parameters required for manufacturing camber-free co-fired Solid Oxide Fuel Cells.