A simple and effective process for Sr0.995Ce0.95Y0.05O3-δ and BaCe0.9Nd0.1O3-δ solid electrolyte ceramics
Abstract
A simple and effective reaction-sintering process for Sr0.995Ce0.95Y0.05O3-δ and BaCe0.9Nd0.1O3-δ solid electrolyte ceramics was investigated in this study. Without any calcination involved, the mixture of raw materials was pressed and sintered directly. Sr0.995Ce0.95Y0.05O3-δ ceramics with 98.4% of the theoretical density were obtained after being sintered at 1350 °C for 2 h. A total conductivity 1.42 mS cm-1 at 900 °C could be obtained in Sr0.995Ce0.95Y0.05O3-δ sintered at 1500 °C for 4 h. BaCe0.9Nd0.1O3-δ ceramics with 91.7% of the theoretical density were obtained after being sintered at 1500 °C for 2 h. A total conductivity 11.54 mS cm-1 at 900 °C could be obtained in BaCe0.9Nd0.1O3-δ sintered at 1350 °C for 6 h. The reaction-sintering process has proven a simple and effective method to obtain useful Sr0.995Ce0.95Y0.05O3-δ and BaCe0.9Nd0.1O3-δ ceramics for solid electrolyte applications in solid oxide fuel cells.
- Publication:
-
Journal of Power Sources
- Pub Date:
- May 2008
- DOI:
- 10.1016/j.jpowsour.2008.01.012
- Bibcode:
- 2008JPS...179..553L
- Keywords:
-
- SrCeO<SUB>3</SUB>;
- BaCeO<SUB>3</SUB>;
- Solid electrolyte;
- Solid oxide fuel cell;
- Reaction-sintering process