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-d], A-site deficient [(La0.6Sr0.4)1-xCo0.2Fe0.8O3-d], and Sr-deficient [La0.6Sr0.4-xCo0.2Fe0.8O3-d], 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.
Revised: April 28, 2015 |
Published: November 1, 2011
Citation
Templeton J.W., J.S. Hardy, Z. Lu, and J.W. Stevenson. 2011.THE EFFECT OF A-SITE STOICHIOMETRY ON LSCF CATHODE PERFORMANCE AND STABILITY. In 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, edited by NP Bansal, et al, 32. Hoboken, New Jersey:John Wiley & Sons, Inc.PNNL-SA-77313.doi:10.1002/9781118095249.ch5