High-Performance, Thermal Cycling Stable, Coking-Tolerant Solid Oxide Fuel Cells with Nanostructured Electrodes
High-Performance, Thermal Cycling Stable, Coking-Tolerant Solid Oxide Fuel Cells with Nanostructured Electrodes
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DOI：
10.1021/acsami.0c18434
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发表时间：
2021-01-25
影响因子：
9.5
通讯作者：
Liu, Meilin
中科院分区：
文献类型：
--
作者：
Zhang, Weilin;Zhou, Yucun;Liu, Meilin
固体氧化物燃料电池（SOFC）是可持续能源未来的一种有前途的解决方案。然而，电池性能和稳定性仍然是一个挑战。通过简单、经济高效的方法制造耐用的纳米结构电极是解决这些问题的有效方法。在这项工作中，纳米结构的 PrBa0.5Sr0.5Co1.5Fe0.5O5+delta (PBSCF) 阴极和 Ni-Ce0.8Sm0.2O1.9 (SDC) 阳极都是通过溶液渗透在多孔氧化钇稳定氧化锆 (YSZ) 主干上制造的。具有 PBSCF 垂直条 YSZ 垂直条 PBSCF 配置的对称电池表现出 0.03 Omega cm(2) 的低界面极化电阻，在 700 摄氏度下持续 600 小时时降解最小。 Ni-SDC垂直棒YSZ垂直棒PBSCF单电池在650℃下在H-2上运行110小时表现出0.62 W cm(-2)的峰值功率密度，具有良好的热循环稳定性。单电池还表现出优异的焦化耐受性，在 CH4 上稳定运行超过 120 小时。这项工作为开发由天然气驱动的高性能、耐用的 SOFC 提供了一条有前途的途径。
Solid oxide fuel cells (SOFCs) are a promising solution to a sustainable energy future. However, cell performance and stability remain a challenge. Durable, nanostructured electrodes fabricated via a simple, cost-effective method are an effective way to address these problems. In this work, both the nanostructured PrBa0.5Sr0.5Co1.5Fe0.5O5+delta (PBSCF) cathode and Ni-Ce0.8Sm0.2O1.9 (SDC) anode are fabricated on a porous yttria-stabilized zirconia (YSZ) backbone via solution infiltration. Symmetrical cells with a configuration of PBSCF vertical bar YSZ vertical bar PBSCF show a low interfacial polarization resistance of 0.03 Omega cm(2) with minimal degradation at 700 degrees C for 600 h. Ni-SDC vertical bar YSZ vertical bar PBSCF single cells exhibit a peak power density of 0.62 W cm(-2) at 650 degrees C operated on H-2 with good thermal cycling stability for 110 h. Single cells also show excellent coking tolerance with stable operation on CH4 for over 120 h. This work offers a promising pathway toward the development of high-performance and durable SOFCs to be powered by natural gas.