The Effect of a CGO Barrier Layer on the Performance of LSM/YSZ SOFC Cathodes

作者：Hansen K Kammer^*; Menon M; Knudsen J; Bonanos N; Mogensen M

来源：Journal of the Electrochemical Society, 2010, 157(3): B309-B313.

DOI：10.1149/1.3273194

• cerium compounds
• electrochemical electrodes
• electrochemical impedance spectroscopy
• electrolytes
• lanthanum compounds
• solid oxide fuel cells
• strontium compounds
• ytterbium compounds
• zirconium compounds

Strontium-substituted lanthanum manganite/yttria-stabilized zirconia (LSM/YSZ) solid oxide fuel cell (SOFC) composite electrodes were fabricated with slurry spraying on both sides on either pure YSZ electrolyte foils or YSZ electrolyte foils with a cerium-gadolinium oxide (CGO) barrier layer made by spin coating. Electrochemical impedance spectroscopy was used to evaluate the performance of the LSM/YSZ composite electrodes. It was shown that the CGO barrier layer affects both the performance of the LSM/YSZ composite electrodes and the series resistance of the cells. This indicates that the cathode-electrolyte interface and the barrier layer-electrolyte interface have a large influence on the performance of LSM/YSZ composite electrodes.

• 出版日期2010