Degradation Mechanisms of La-Sr-Co-Fe-O3 SOFC Cathodes
Journal Article
·
· Electrochemical and Solid-State Letters, 9(10):A478-A481
The long-term stability of anode-supported YSZ electrolyte SOFCs utilizing (La0.6Sr0.4)0.98Co0.2Fe0.8O3-? (LSCF-6428) cathodes was assessed. Samples tested for 500 hours at 750 C and 0.7V indicated ?50% degradation. While scanning electron microscopy (SEM) and energy dispersive x-ray (EDX) analysis indicated no obvious microstructural or chemical phenomena that could explain the high degradation, x-ray photon spectroscopy (XPS) revealed that enrichment of Sr at the cathode-electrolyte and cathode-current collector interfaces was at least partially responsible for the observed degradation.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 891137
- Report Number(s):
- PNNL-SA-49777; 10001a; TRN: US200621%%581
- Journal Information:
- Electrochemical and Solid-State Letters, 9(10):A478-A481, Journal Name: Electrochemical and Solid-State Letters, 9(10):A478-A481
- Country of Publication:
- United States
- Language:
- English
Similar Records
Performance of a Novel La(Sr)Fe(Co)O3-Ag SOFC Cathode
A Mössbauer spectral study of degradation in La0.58Sr0.4Fe0.5Co0.5O3–x after long-term operation in solid oxide electrolysis cells
Improved Sinterability and Performance of Lanthanum Ferrite SOFC Cathodes
Journal Article
·
Fri Oct 20 00:00:00 EDT 2006
· Journal of Power Sources, 161(1):115-122
·
OSTI ID:891137
+1 more
A Mössbauer spectral study of degradation in La0.58Sr0.4Fe0.5Co0.5O3–x after long-term operation in solid oxide electrolysis cells
Journal Article
·
Sat Oct 21 00:00:00 EDT 2017
· Solid State Ionics
·
OSTI ID:891137
+3 more
Improved Sinterability and Performance of Lanthanum Ferrite SOFC Cathodes
Conference
·
Wed Oct 01 00:00:00 EDT 2003
·
OSTI ID:891137