A button‐typed single solid oxide fuel cell (SOFC) with an internal catalytic reforming layer is tested for direct‐fed ethanol SOFC technology. This catalytic functional layer consists of 5 wt% Rh/CeZrO₂ catalyst and is applied in front of conventional nickel–yttria–stabilized zirconia (Ni–YSZ) anode to convert the ethanol fuel (35 vol%) into a hydrogen‐rich gas stream via the ethanol steam reforming reaction under harsh operating conditions for 24 h (steam‐to‐carbon [S/C] ratio = 3.1, 600 °C, and weight hourly space velocity [WHSV] of 176 h⁻¹). The X‐ray powder diffraction (XRD) analysis and transmission electron microscopy (TEM) images reveal highly dispersed Rh nanoparticles with an average size of 2 nm over CeZrO₂ support. Unlike the button cell without the catalytic functional layer, the electrochemical performance of the button cell with the catalytic functional layer illustrates a high coking resistance while maintaining a good power density output. The proposed SOFC with the catalytic functional layer is a viable solution for future electric cars with bioethanol‐fed SOFC technology.

中文翻译：

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在直接乙醇进料条件下运行的内部重整固体氧化物燃料电池系统

带有内部催化重整层的纽扣型单固体氧化物燃料电池（SOFC）已针对直接进料乙醇SOFC技术进行了测试。此催化功能层由5 wt％的Rh / CeZrO ₂催化剂组成，并涂在常规的镍-钇稳定的氧化锆（Ni-YSZ）阳极之前，以将乙醇燃料（35％（体积））转化为富氢气流通过乙醇蒸汽重整反应在苛刻的操作条件下持续24小时（蒸汽与碳[S / C]的比= 3.1、600°C，重时空速[WHSV]为176 h ^-1）。X射线粉末衍射（XRD）分析和透射电子显微镜（TEM）图像显示高度分散的Rh纳米颗粒，在CeZrO _2上平均粒径为2 nm支持。与不具有催化功能层的纽扣电池不同，具有催化功能层的纽扣电池的电化学性能显示出高的耐焦化性，同时保持了良好的功率密度输出。拟议的带有催化功能层的SOFC是采用生物乙醇喂养的SOFC技术的未来电动汽车的可行解决方案。