To improve the electrochemical performance of anode‐supported solid oxide fuel cells (SOFCs), microextrusion printing and wet infiltration techniques are employed for structural modification on the meso‐ (10–100 µm) and nanoscale order, respectively. In the mesoscale structural modification, anode ridge structures are fabricated by extruding an anode slurry on the surface of a flat anode disk to extend the electrode–electrolyte interfacial area. In the nanoscale structural modification, gadolinium‐doped ceria (GDC) nanoparticles are introduced into a porous lanthanum strontium cobalt ferrite (LSCF) cathode. To investigate the effects of mesoscale and nanoscale structural modifications, four different types of anode‐supported SOFC including a conventional cell are prepared, and their performance is evaluated at several operating temperatures. It is found that both the mesoscale and nanoscale structural modifications reduce not only the polarization resistance but also the ohmic resistance in the cells, resulting in the improvement in cell performance. Moreover, it is clarified that the improvement in cell performance becomes greater with decreasing operating temperature. Specifically, the maximum power density in the cell where both mesoscale and nanoscale structural modifications are applied is increased by 66% at 600 °C and 34% at 700 °C, compared with that in the conventional cell.

中文翻译：

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通过介观和纳米尺度的结构改进来改善阳极支撑的固体氧化物燃料电池的电化学性能

为了提高阳极支撑的固体氧化物燃料电池（SOFC）的电化学性能，分别采用了微挤压印刷和湿渗透技术对中观（10–100 µm）和纳米级的结构进行了改性。在中尺度结构修改中，通过在平坦阳极盘的表面上挤压阳极浆料以扩展电极-电解质界面区域来制造阳极脊结构。在纳米级结构修饰中，g掺杂的二氧化铈（GDC）纳米颗粒被引入到多孔镧锶钴铁氧体（LSCF）阴极中。为了研究中尺度和纳米尺度结构修饰的影响，制备了四种不同类型的阳极支撑SOFC（包括传统电池），并在几个工作温度下对其性能进行了评估。发现中尺度和纳米尺度的结构修饰不仅降低了电池中的极化电阻，而且降低了欧姆电阻，从而改善了电池性能。此外，可以明确的是，随着工作温度的降低，电池性能的提高变得更大。具体而言，与常规电池相比，同时应用了中尺度和纳米尺度结构修饰的电池中的最大功率密度在600°C时增加了66％，在700°C时增加了34％。可以看出，随着工作温度的降低，电池性能的提高变得更大。具体而言，与常规电池相比，同时应用了中尺度和纳米尺度结构修饰的电池中的最大功率密度在600°C时增加了66％，在700°C时增加了34％。可以看出，随着工作温度的降低，电池性能的提高变得更大。具体而言，与常规电池相比，同时应用了中尺度和纳米尺度结构修饰的电池中的最大功率密度在600°C时增加了66％，在700°C时增加了34％。