THE EFFECT OF A-SITE STOICHIOMETRY ON LSCF CATHODE PERFORMANCE AND STABILITY

Conference · Tue Nov 01 00:00:00 EDT 2011

DOI:https://doi.org/10.1002/9781118095249.ch5· OSTI ID:1178920

Templeton, Jared W.; Hardy, John S.; Lu, Zigui; Stevenson, Jeffry W.

Anode-supported solid oxide fuel cells (SOFCs) were prepared and tested identically except for variations in the A-site stoichiometry of the LSCF cathode. A commercial supplier provided lanthanum strontium cobalt ferrite (LSCF) powders that were stoichiometric [La0.6Sr0.4Co0.2Fe0.8O3-δ], A-site deficient [(La0.6Sr0.4)1-xCo0.2Fe0.8O3-δ], and Sr-deficient [La0.6Sr0.4-xCo0.2Fe0.8O3-δ], in which the imposed deficiency (x) was 0.02, 0.05, and 0.1 in the non-stoichiometric cases. Multiple 1,000 hour tests were run using each LSCF cathode composition. The performance and stability of the cells will be discussed.

• Research Organization: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1178920
• Report Number(s): PNNL-SA-77313; AA6040000
• Resource Relation: Conference: Advances in Solid Oxide Fuel Cells VII: Ceramic Engineering and Science Proceedings, 35th Conference on Advanced Ceramics and Composites, January 23-28, 2011, Daytona Beach, Florida, 32
• Country of Publication: United States
• Language: English