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- W4386865554 abstract "The application of cobalt-based perovskite cathode materials in proton-conducting SOFCs (H–SOFCs) is challenged by their high thermal expansion coefficient (TEC). To address interface degradation/separation between the cobalt-based perovskite cathode and the proton-conducting electrolyte, we design and prepare the high-entropy perovskite oxide (HEPO) BaCo0.2Zn0.2Ga0.2Zr0.2Y0.2O3-δ (BCX) as the cathode for proton-conducting SOFCs (H–SOFCs). BCX demonstrates remarkable performance and stability in the oxygen reduction reaction, validated through structural analysis and electrochemical characterizations. The TEC of BCX is as low as 12.75 × 10-6 K−1 compared to the 18.69 × 10-6 K−1 of the un-doped BaCoO3-δ (BC). The polarization resistance of BCX cathode about 0.69 Ω cm2 is realized at 600 °C, much lower than that for pristine BC cathode (1.27 Ω cm2). Single cell with BCX cathode exhibits remarkable long-term stability without detectable degradation over 100 h." @default.
- W4386865554 created "2023-09-20" @default.
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- W4386865554 date "2023-09-01" @default.
- W4386865554 modified "2023-09-27" @default.
- W4386865554 title "Novel high-entropy BaCo0.2Zn0.2Ga0.2Zr0.2Y0.2O3-δ cathode for proton ceramic fuel cells" @default.
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- W4386865554 doi "https://doi.org/10.1016/j.ceramint.2023.09.166" @default.
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