Self-assembly and low-temperature sintered La0.6Sr0.4CoO3- @ Gd0.1Ce0.9O2- composite cathode with rich electrode/electrolyte interface and enhanced performance in harsh condition

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY(2024)

引用 0|浏览3
暂无评分
摘要
In order to improve cost competitiveness and the further application of metal-supported cells, it is important to explore cathodes suitable for low-temperature sintering. However, decreasing cathode sintering temperature while maintaining robust interface of cathode/electrolyte and decent electrochemical performances is challenging for solid oxide fuel cells. Herein, by combining the Pechini method with one-pot method, La0.6Sr0.4CoO3-delta @ Gd0.1Ce0.9O2-delta (LSC@GDC) composite cathodes are prepared and investigated, compared with mechanically mixed LSC-GDC cathodes. At the cathode sintering temperature of 800 degrees C, the LSC@GDC cathode single cells perform better performances, with deceased resistances, improved power density outputs and better feasibility to wide oxygen partial pressures from 0.21 atm down to 0.03 atm. The optimum composition of 70:30 wt% for LSC@GDC is proposed. The anode supported single cell with LSC@GDC30 cathode exhibits a maximum power density of 0.789 W/cm(2) and 0.545 W/cm(2) at 750 degrees C, under cathode oxygen partial pressure of 0.21 atm and 0.03 atm, respectively. Moreover, the low temperature sintered LSC@GDC50 cathode performs decent durability during repeatedly controlled thermal cycling over 10 times.
更多
查看译文
关键词
Solid oxide fuel cell,cathode,Oxygen partial pressure,Cathode/electrolyte interface
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要