Review on Fe-based double perovskite cathode materials for solid oxide fuel cells
Review on Fe-based double perovskite cathode materials for solid oxide fuel cells
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DOI：
10.20517/energymater.2023.70
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发表时间：
2024-01
期刊：
影响因子：
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通讯作者：
Manyi Xie;Changkun Cai;Xingyu Duan;Ke Xue;Hong Yang;Shengli An
中科院分区：
文献类型：
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作者：
Manyi Xie;Changkun Cai;Xingyu Duan;Ke Xue;Hong Yang;Shengli An
固体氧化物燃料电池作为一种清洁、高效的能量转换装置，因其环境友好性和燃料适应性而备受关注。因此，它们已成为当前新能源的研究方向之一。阴极作为固体氧化物燃料电池中氧化气氛的电化学反应场所，在决定输出性能方面起着关键作用。近年来，具有混合离子和电子导体的双钙钛矿阴极材料的开发在中温（600-800 °C）燃料电池中取得了重大进展。这些材料有可能提供更高的功率密度和更好的稳定性，使它们成为未来燃料电池应用的有希望的候选者。铁基双钙钛矿结构正极材料由于其AA'BB' O 6结构中存在A（A '）或B（B'）位，具有可调的晶体结构和性能，受到了广泛的关注。这种材料具有几个优点，例如高的氧催化活性、低的热膨胀系数以及与电解质的热膨胀相容。越来越多的研究者通过对双钙钛矿材料的微观结构、晶体结构和电子结构进行修饰和调整，探索双钙钛矿材料的性能反应机理。本文综述了LnBaFe 2 O 5和Sr 2Fe 2-xMoxO 6双钙钛矿正极材料的研究进展，重点介绍了各种改性方法对材料电化学性能的影响。最后展望了双钙钛矿正极材料未来潜在的研究方向。
As a clean and efficient energy conversion device, solid oxide fuel cells have been garnering attention due to their environmentally friendly and fuel adaptability. Consequently, they have become one of the current research directions of new energy. The cathode, as the electrochemical reaction site of an oxidation atmosphere in solid oxide fuel cells, plays a key role in determining the output performance. In recent years, the development of double perovskite cathode materials with mixed ionic and electronic conductors has made significant progress in intermediate-temperature (600-800 °C) fuel cells. These materials have the potential to deliver higher power densities and improved stability, making them promising candidates for future fuel cell applications. The Fe-based double perovskite structure cathode material has gained extensive attention due to its adjustable crystal structure and performance, as it has A(A’) or B(B’) positions in its AA’BB’O6 structure. This material has several advantages, such as high oxygen catalytic activity, low thermal expansion coefficient, and compatibility with the thermal expansion of the electrolyte. An increasing number of researchers have been exploring the performance reaction mechanism of double perovskite by modifying and adjusting its material microstructure, crystal structure, and electronic structure. In this paper, the research progress of LnBaFe2O5 and Sr2Fe2-xMoxO6 double perovskite cathode materials is reviewed to highlight the effects of various modification methods developed on electrochemical performance of these materials. Furthermore, the potential future research directions of double perovskite cathode materials are prospected.