钴
阴极
氧化钇稳定氧化锆
材料科学
钙钛矿(结构)
固体氧化物燃料电池
阳极
氧化物
燃料电池
极化(电化学)
催化作用
耐久性
离子键合
立方氧化锆
化学工程
无机化学
电极
陶瓷
冶金
化学
复合材料
离子
物理化学
工程类
生物化学
有机化学
作者
Hyunmin Kim,Sangwook Joo,Ohhun Kwon,Sihyuk Choi,Guntae Kim
标识
DOI:10.1002/celc.202001240
摘要
Abstract Cobalt‐free perovskite oxides with mixed ionic and electronic conducting (MIEC) properties have been considered as promising alternatives for solid oxide fuel cell (SOFC) cathode material. Among the cobalt‐free perovskite oxides, iron‐based perovskite oxides have received much spotlight as potential candidates for high‐temperature SOFC cathode material attributed to their great catalytic activity for the oxygen reduction reaction (ORR) and excellent cell operation durability. Herein, Sr‐doped Pr 0.5 Ba 0.4 Sr 0.1 FeO 3– δ (PBSF) is presented with the aims of enhancing the catalytic activity for ORR while retaining great durability for yttria‐stabilized zirconia (YSZ)‐supported SOFC. The developed PBSF exhibited outstanding cathodic polarization resistance of 0.05 Ω cm 2 at 850 °C, which is 3 times lower than the commercial La 1–x Sr x MnO 3– δ . Furthermore, there is no observable degradation for 50 hours. This study presents a great potential to replace the commercial cathodes for YSZ‐supported SOFC.
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