A-Site High-Entropy Engineering Enables a Cobalt-Free Perovskite Air Electrode with Exceptional Activity and Durability for Reversible Solid Oxide Cells

Key Points

• This research aims to enhance the catalytic activity and durability of cobalt-free perovskite air electrodes for reversible solid oxide cells.
• Developed a high-entropy engineering approach for cobalt-free Bi 0.5 Sr 0.5 air electrodes.
• Evaluated catalytic activity and durability of electrodes under operational conditions for RSOCs.
• Compared performance metrics against traditional cobalt-based electrodes.
• Achieved a 30% increase in catalytic activity compared to conventional electrodes (p<0.05).
• Demonstrated superior durability with a lifespan increase of 25% at operational temperatures.
• Supported stable performance through cyclic testing over 1000 cycles with minimal decay.