Journal
JOURNAL OF SOLID STATE CHEMISTRY
Volume 184, Issue 9, Pages 2458-2461Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2011.07.021
Keywords
Grain boundary; Interdiffusion; Interface; Scanning transmission electron microscopy; Segregation; Solid oxide fuel cell
Funding
- Ministry of Education, Culture, Sports, and Technology (MEXT), Japan [22310053]
- Global Research center for Environment and Energy based on Nanomaterials science (GREEN), National Institute for Materials Science, Japan
- Grants-in-Aid for Scientific Research [22310053] Funding Source: KAKEN
Ask authors/readers for more resources
Analytical transmission electron microscopy, in particular with the combination of energy dispersive X-ray spectroscopy (EDX) and electron energy-loss spectroscopy (EELS), has been performed to investigate the microstructure and microchemistry of the interfacial region between the cathode (La0.6Sr0.4Co0.8Fe0.2O3, LSCF) and the electrolyte (Gd-doped ceria, GDC). Two types of diffusions, mutual diffusion between cathode and electrolyte as well as the diffusion along grain boundaries, have been clarified. These diffusions suggest that the chemical stability of LSCF and GDC are not as good as previously reported. The results are more noteworthy if we take into consideration the fact that such interdiffusions occur even during the sintering process of cell preparation. (C) 2011 Elsevier Inc. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available