Structure and Ionic Conductivity of Codoped Ceria for IT-SOFC Electrolytes
SCIE
SCOPUS
- Title
- Structure and Ionic Conductivity of Codoped Ceria for IT-SOFC Electrolytes
- Authors
- Hardian, A; Choi, GM; Suendo, V; Ismunandar
- Date Issued
- 2014-01
- Publisher
- AUSTRALIAN CERAMIC SOCIETY
- Abstract
- Doped ceria is believed as the promising candidate for IT-SOFC electrolyte. Codoped strategy can increase the conductivity of single doped ceria at lower operating temperature. The purposes of this research were to synthesize and characterize several codoped Ce1-x-yGdxMyO2-gamma, M = Er, Dy, or Nd and 0.0 <= x,y <= 0.1. Solid state method was used due to it is a simple and suitable method for pilot scale. For the same total dopant concentration, the correlation between cation mean radii and the lattice parameter followed the Vegard's rule. The activation energies of codoped ceria were lower than 1 eV and most of codoped ceria showed conductivities higher than 10(-2) S.cm(-1) at intermediate temperature range (500-800 degrees C).
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/14065
- ISSN
- 0004-881X
- Article Type
- Article
- Citation
- JOURNAL OF THE AUSTRALIAN CERAMIC SOCIETY, vol. 50, no. 2, page. 99 - 109, 2014-01
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