Chapter 88. Novel Composite Electrolytes for Solid Oxide Fuel Cell Applications

  1. Hua-Tay Lin and
  2. Mrityunjay Singh
  1. R. J. Ball and
  2. R. Stevens

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294741.ch88

26th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 23, Issue 3

26th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 23, Issue 3

How to Cite

Ball, R. J. and Stevens, R. (2008) Novel Composite Electrolytes for Solid Oxide Fuel Cell Applications, in 26th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 23, Issue 3 (eds H.-T. Lin and M. Singh), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294741.ch88

Author Information

  1. Department of Engineering and Applied Science University of Bath Bath BA2 7AY UK

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2002

ISBN Information

Print ISBN: 9780470375785

Online ISBN: 9780470294741

SEARCH

Keywords:

  • toughness;
  • agglomerate;
  • biaxial;
  • gadolinia;
  • particle/matrix

Summary

Gadolinia doped ceria is a good candidate for use as an alternative to zirconia for solid oxide fuel cell electrolytes. This is due to its higher ionic conductivity at reduced temperatures. However, doped ceria has a number of disadvantages such as reduced strength and electronic conductivity. An investigation has been carried out to characterise novel composite structures consisting of tetragonal zirconia particles in a doped ceria matrix. Results indicate that an increase in strength can be produced in the ceria by addition of zirconia particles, however, this is dependent on particle size and heat treatment. A structural analysis of the composite structures was carried out using scanning electron microscopy. Electrical properties were determined using a Solartron dielectric test system.