Abstract Cobalt doped Pr0.5Ba0.5FeO3-δ perovskite exhibits superior electrochemical performance when it was tested as an anode for intermediate temperature solid oxide fuel cell. For the anode with a composition of Pr0.5Ba0.5Co0.25Fe0.75O3-δ–Ce0.9Gd0.1O2-δ, the polarization resistance Rp was as low as 0.05 Ωcm2 at 700 °C in air and 0.21 Ωcm2 at 700 °C in 3% H2O–97% H2. In addition, this full-ceramic anode was tolerant to 50 ppm H2S and showed stable performance during the preliminary test. The ceramic composite also exhibited superior activity for cathodic oxygen-reduction-reaction (ORR), thus enabled a symmetrical fuel cell. In a lab designed full-ceramic symmetrical fuel cell, a power density of 0.75 Wcm−2 at 750 °C has been achieved, demonstrating the superior properties of this oxide.

中文翻译：

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具有高性能钴掺杂 Pr 0.5 Ba 0.5 FeO 3-δ 阳极的中温固体氧化物燃料电池

摘要 掺杂钴的 Pr0.5Ba0.5FeO3-δ 钙钛矿在作为中温固体氧化物燃料电池的阳极进行测试时表现出优异的电化学性能。对于成分为 Pr0.5Ba0.5Co0.25Fe0.75O3-δ–Ce0.9Gd0.1O2-δ 的阳极，极化电阻 Rp 在 700°C 空气中低至 0.05 Ωcm2，在 700°C 时低至 0.21 Ωcm2在 3% H2O–97% H2 中。此外，该全陶瓷阳极可耐受 50 ppm H2S，并在初步测试期间表现出稳定的性能。该陶瓷复合材料还表现出优异的阴极氧还原反应（ORR）活性，从而实现了对称燃料电池。在实验室设计的全陶瓷对称燃料电池中，750 °C 下的功率密度达到了 0.75 Wcm-2，证明了这种氧化物的优越性能。