Protonic ceramic fuel cells (PCFCs) are a potential alternative to solid oxide fuel cells at temperatures below 600 °C, but they suffer from low power output and poor chemical stability. Now, PCFCs with a power density of over 500 mW per cm2 at 500 °C and long-term stability are demonstrated using optimized perovskite-based electrolyte and electrodes.
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Shim, J.H. Ceramics breakthrough. Nat Energy 3, 168–169 (2018). https://doi.org/10.1038/s41560-018-0110-7
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DOI: https://doi.org/10.1038/s41560-018-0110-7
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