Chapter 10. Electrical Properties of Ce0.8Gd0.2O1.9 Ceramics Prepared by an Aqueous Process

  1. Narottam P. Bansal,
  2. Andrew Wereszczak and
  3. Edgar Lara-Curzio
  1. Toshiaki Yamaguchi1,
  2. Yasufumi Suzuki2,
  3. Wataru Sakamoto2 and
  4. Shin-Ichi Hirano2

Published Online: 26 MAR 2008

DOI: 10.1002/9780470291337.ch10

Advances in Solid Oxide Fuel Cells II: Ceramic Engineering and Science Proceedings, Volume 27, Issue 4

Advances in Solid Oxide Fuel Cells II: Ceramic Engineering and Science Proceedings, Volume 27, Issue 4

How to Cite

Yamaguchi, T., Suzuki, Y., Sakamoto, W. and Hirano, S.-I. (2008) Electrical Properties of Ce0.8Gd0.2O1.9 Ceramics Prepared by an Aqueous Process, in Advances in Solid Oxide Fuel Cells II: Ceramic Engineering and Science Proceedings, Volume 27, Issue 4 (eds N. P. Bansal, A. Wereszczak and E. Lara-Curzio), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470291337.ch10

Author Information

  1. 1

    National Institute of Advanced Industrial Science and Technology (AIST) Shimo-shidami, Moriyama-ku Nagoya, 463-8560, Japan

  2. 2

    Department of Applied Chemistry, Graduate School of Engineering, Nagoya University Furo-cho, Chikusa-ku Nagoya, 464-8603, Japan

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2006

ISBN Information

Print ISBN: 9780470080542

Online ISBN: 9780470291337

SEARCH

Keywords:

  • ammonia;
  • ceramics;
  • hydration;
  • crystallite;
  • endothermic

Summary

Gd-doped ceria (GDC) ceramics were synthesized using the ammonia coprecipitation method. By selecting the Ce(IV) compound as a cerium source, the nano-sized GDC precursor could be prepared without any compositional deviations. The GDC powders calcined above 800°C can be sintered to 97% of the theoretical result at 1600°C. The ionic conductivity of GDC ceramics from the Ce(IV) source was found to be 14.6mS/cm at 700°C, which was superior to that of 6.9mS/cm at 700°C for GDC ceramics from Ce(III) source, due to its lower formation of defect associations.