Abstract:In this study, electrochemical properties of layered perovskites having non-stoichiometric compositions (Sm1−xBaCo2O5+d, x = 0, 0. 01, 0.02, 0.03, 0.04, 0.05, 0.10, and 0.15) were analyzed for the direct application of cathode materials for Intermediate Temperature-operating Solid Oxide Fuel Cells (IT-SOFC). From the Sm1−xBaCo2O5+d oxide systems calcined at 1,100°C for 8 h, single phase (SmBaCo2O5+d, SBCO_1) was maintained only in the case of the x = 0 composition. In the compositions of x = 0.05–0.10, BaCoO2.… Show more
“…The zirconia beads were removed from the slurry and the remaining part was stirred at room temperature to form a cathode ink paste. The specific process can be found in a previously published study by our research group [23][24][25][26][27][28]. The cathode ink was thinly screenprinted on the sintered CGO91 electrolyte substrate using a mesh (23 x 6 mm).…”
Section: Dense and Porous Samples For Microstructure Analysismentioning
“…The zirconia beads were removed from the slurry and the remaining part was stirred at room temperature to form a cathode ink paste. The specific process can be found in a previously published study by our research group [23][24][25][26][27][28]. The cathode ink was thinly screenprinted on the sintered CGO91 electrolyte substrate using a mesh (23 x 6 mm).…”
Section: Dense and Porous Samples For Microstructure Analysismentioning
Development of new functional materials with improved characteristics for solid oxide fuel cells (SOFCs) and solid oxide electrolysis cells (SOECs) is one of the most important tasks of modern materials science. High electrocatalytic activity in oxygen reduction reactions (ORR), chemical and thermomechanical compatibility with solid electrolytes, as well as stability at elevated temperatures are the most important requirements for cathode materials utilized in SOFCs. Layered oxygen-deficient double perovskites possess the complex of the above-mentioned properties, being one of the most promising cathode materials operating at intermediate temperatures. The present review summarizes the data available in the literature concerning crystal structure, thermal, electrotransport-related, and other functional properties (including electrochemical performance in ORR) of these materials. The main emphasis is placed on the state-of-art approaches toimproving the functional characteristics of these complex oxides.
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