Preparation of La<sub>0.6</sub>Ba<sub>0.4</sub>Co<sub>0.2</sub>Fe<sub>0.8</sub>O<sub>3</sub> (LBCF) Nanoceramic Cathode Powders by Sol-Gel Process for Solid Oxide Fuel Cell (SOFC) Application — Oak Academic Publishing
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Preparation of La<sub>0.6</sub>Ba<sub>0.4</sub>Co<sub>0.2</sub>Fe<sub>0.8</sub>O<sub>3</sub> (LBCF) Nanoceramic Cathode Powders by Sol-Gel Process for Solid Oxide Fuel Cell (SOFC) Application
The La<sub>0.6</sub>Ba<sub>0.4</sub>Co<sub>0.2</sub>Fe<sub>0.8</sub>O<sub>3</sub> (LBCF) nano ceramic powders were prepared by Sol-Gel process using nitrate based chemicals for SOFC applications since these powders are considered to be more promising cathode materials for SOFC. Citric acid was used as a chelant agent and ethylene glycol as a dispersant. The powders were calcined at 650<sup>o</sup>C/6 h, 900<sup>o</sup>C/3 h in air using Thermolyne 47,900 furnace. These powders were charac terized by SEM/EDS, XRD and Porosimetry techniques. The SEM images indicate that the particle sizes of the LBCF powders are in the range of 50 - 200 nm. The LBCF perovskite phases are seen from the XRD patterns. From XRD Line broadening technique, the average particle size for the powders (as prepared and calcined at 650<sup>o</sup>C/6 h and 900<sup>o</sup>C/3 h) were found to be around 12.97 nm, 22.24 nm and 26 nm respectively. The surface area of the LBCF powders for the as prepared and calcined at 650<sup>o</sup>C were found to be 28.92 and 19.54 m<sup>2</sup>/g respectively.
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