Synthesis and Characterization of Ba0.5 Sr0.5 (CO0.8Fe0.2)1-xZrx O3-δ (BSCF) Nanoceramic Cathode Powders by Sol-Gel Process for Solid Oxide Fuel Cell

The nanoceramic Ba0.5Sr0.5 (CO0.8Fe0.2)1-x ZrxO3-δ (Barium Strontium Cobalt Iron Zirconate)BSCF powders have been synthesized by sol-Gel process using nitrate based powdered chemicals for SOFC applications, as these powders are more useful for Cathode of SOFCs. Ionic conduction, Adsorption and desorption rates are the major processes that control the electrode reactions. They contribute to the over potential. To obtain the low potential cathode materials suitable for the cathodes, the materials are prepared in SOL-GEL method. The Chelating agent used is Acetic acid, Ethylene glycol & Ammonia as dispersant. These powders were kept for calcinations at 8500C, 10500C for about 6 hr.These were characterized by XRD, SEM with EDAX, .XRD results proved the formation of perovskite phase at all calcinations temperatures and the crystallite sizes were found to be 28,65 nm, 51,56 nm. From SEM, it is found that for some samples, there is presence of extreme porous particles present in nano sizes and conductivities, densities are studied.