37. Co-Sintering Behaviour of Porous Ni-YSZ Composite SOFC Anodes

  1. Dongming Zhu and
  2. Kevin Plucknett
  1. R. M. C. Clemmer and
  2. S. F. Corbin

Published Online: 26 MAR 2008

DOI: 10.1002/9780470291238.ch37

Advances in Ceramic Coatings and Ceramic-Metal Systems: Ceramic Engineering and Science Proceedings, Volume 26, Number 3

Advances in Ceramic Coatings and Ceramic-Metal Systems: Ceramic Engineering and Science Proceedings, Volume 26, Number 3

How to Cite

Clemmer, R. M. C. and Corbin, S. F. (2008) Co-Sintering Behaviour of Porous Ni-YSZ Composite SOFC Anodes, in Advances in Ceramic Coatings and Ceramic-Metal Systems: Ceramic Engineering and Science Proceedings, Volume 26, Number 3 (eds D. Zhu and K. Plucknett), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470291238.ch37

Author Information

  1. Department of Mechanical Engineering, University of Waterloo 200 University Ave W. Waterloo, Ontario, Canada, N2L 3G1

Publication History

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

ISBN Information

Print ISBN: 9781574982336

Online ISBN: 9780470291238

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Keywords:

  • phenomenon;
  • dilatometm;
  • electrolyte;
  • phenomenon;
  • volumetric

Summary

In order to successfully co-sinter solid oxide fuel cell components together, the sintering shrinkage of each component must match. However, the sintering behavior of the Ni/YSZ composite anode differs from that of the pure YSZ electrolyte due to constrained sintering associated with its composite structure. For example only a small addition of Ni powder to a YSZ cast tape can dramatically alter its shrinkage response during sintering. Despite the importance of this sintering phenomenon to cell fabrication and microstructural stability, it has not been systematically studied. The goal of the study was to experimentally determine the role nickel oxidation has on constrained sintering of anode structures by examining the sintering behaviour of tape-cast porous Ni/YSZ and NiO/YSZ composite SOFC anode structures. The dimensional changes during sintering were measured using a high temperature dilatometer and results show that the sintering rate, as well as total shrinkage of the anodes, decreased with an increase in the Ni content The oxidation of the nickel metal during processing also causes a significant decrease in sintering shrinkage of the Ni/YSZ structures compared to the NiO/YSZ anode structures.