Abstract
One potential solution to the challenges of energy storage and conversion is the utilization of solid oxide fuel cells (SOFCs), which offer a versatile pathway for the generation of renewable fuels. However, the advancement of SOFC technology faces significant obstacles, including sluggish oxygen reaction kinetics, insufficient durability, and poor round-trip efficiency, primarily due to the limitations of the air electrode. To address these challenges, we present a novel Sn doped cathode BaCo0.4Fe0.5-xSnxYb0.1O3−δ (BCFSYx), designed to enhance electrochemical performance at lower temperatures. The finding demonstrates that BaCo0.4Fe0.425Sn0.075Yb0.1O3-δ (BCFSY075) displays favorable oxygen reduction reaction (ORR) performance and achieves the best power density. Furthermore, the polarization process exhibits a reduced reliance on temperature, hence enabling the potential for consistent operation at low temperatures.
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