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Recycling-triggered performance enhancement of double-perovskite-based cathode in protonic ceramic fuel cells
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DOI：10.1016/j.mseb.2026.119424.png)
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Abstract
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Developing new chemical routes for reusing the catalyst materials in protonic ceramic fuel cells (PCFCs) is extremely meaningful for exploiting their environmentally friendly usage strategies. Herein, a double perovskite cathode with a composition of Ba1.1(Gd0.8La0.2)0.9(Co1.5Fe0.5)O6-delta (BGLCF) was designed, and was synthesized via a self-assembly method. Complete cathode material recycling was achieved through an acid-assisted corrosion method. The reused catalyst material, as a cathode of PCFCs, indicated enhanced electrochemical activity, achieving a peak power density (PPD) of 1.43 W cm-2 at 700 degrees C, 12.6% higher than that of the cell with the pristine cathode. A self-assembly phenomenon of recycled BGLCF was observed, which was found to be extremely helpful for the enhancement of its electrochemical activity. Our findings highlight the critical role of thorough material recycling in advancing the green development of PCFCs and offer new insights into the controlled synthesis of high-performance cathode materials.
Keywords:
Protonic ceramic fuel cells
Complete recycling
Acid-assisted corrosion
Self-assembly
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