Overview

""Advances in SOFC Technology: GDC-SDC Composite Cathodes"" delves into Solid Oxide Fuel Cells (SOFCs), focusing on the role of gadolinium-doped ceria (GDC) and samarium-doped ceria (SDC) in composite cathodes to enhance performance. SOFCs operate by electrochemically converting chemical energy to electrical energy at high temperatures (600-900°C) with a solid oxide electrolyte, suitable for applications like power generation due to their fuel flexibility and efficiency. Key components include anodes, cathodes, and electrolytes, each crucial for efficient electrochemical reactions, particularly the oxygen reduction reaction (ORR) at the cathode. Optimized cathode materials, often perovskite structures, enhance ORR kinetics at intermediate temperatures. GDC and SDC composites offer excellent ionic conductivity and thermal stability, reducing polarization resistance and boosting SOFC performance. The document explores synthesis and fabrication techniques like sol-gel processes, screen printing, and spray deposition, each impacting cathode microstructure and efficiency. Challenges such as material compatibility, porosity control, and grain size are also addressed, with innovations in nanostructuring and scalable methods enhancing SOFC durability and efficiency for industrial applications, underscoring GDC-SDC composites' role in advancing clean energy technologies.

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