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首页> 美国卫生研究院文献>Scientific Reports >Tailoring the Microstructure of a Solid Oxide Fuel Cell Anode Support by Calcination and Milling of YSZ
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Tailoring the Microstructure of a Solid Oxide Fuel Cell Anode Support by Calcination and Milling of YSZ

机译：通过YSZ的煅烧和铣削调整固体氧化物燃料电池阳极载体的微观结构。

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In this study, the effects of calcination and milling of 8YSZ (8 mol% yttria stabilized zirconia) used in the nickel-YSZ anode on the performance of anode supported tubular fuel cells were investigated. For this purpose, two different types of cells were prepared based on a Ni-YSZ/YSZ/Nd2NiO4+δ-YSZ configuration. For the anode preparation, a suspension was prepared by mixing NiO and YSZ in a ratio of 65:35 wt% (Ni:YSZ 50:50 vol.%) with 30 vol.% graphite as the pore former. As received Tosoh YSZ or its calcined form (heated at 1500 °C for 3 hours) was used in the anode support as the YSZ source. Electrochemical results showed that optimization of the fuel electrode microstructure is essential for the optimal distribution of gas within the support of the cell, especially under electrolysis operation where the performance for an optimized cell (calcined YSZ) was enhanced by a factor of two. In comparison with a standard cell (containing as received YSZ), at 1.5 V and 800 °C the measured current density was −1380 mA cm−2 and −690 mA cm−2 for the cells containing calcined and as received YSZ, respectively. The present study suggests that the anode porosity for improved cell performance under SOEC is more critical than SOFC mode due to more complex gas diffusion under electrolysis mode where large amount of steam needs to be transfered into the cell.
机译：在这项研究中，研究了镍-YSZ阳极中使用的8YSZ（8 mol％氧化钇稳定的氧化锆）的煅烧和研磨对阳极支撑管状燃料电池性能的影响。为此，基于Ni-YSZ / YSZ / Nd2NiO4 +δ-YSZ构型制备了两种不同类型的电池。对于阳极制备，通过将NiO和YSZ以65:35重量％（Ni：YSZ 50:50体积％）的比例与30体积％的石墨作为成孔剂混合来制备悬浮液。接收到的Tosoh YSZ或其煅烧形式（在1500°C加热3-6小时）在阳极支撑物中用作YSZ源。电化学结果表明，燃料电池微观结构的优化对于气体在电池支架内的最佳分布至关重要，特别是在电解操作下，其中优化电池（煅烧YSZ）的性能提高了两倍。与标准电池（包含收到的YSZ）相比，在1.5 V和800 C下，测得的电流密度为-1380 mA cm -2 和-690 mA cm -2

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