For nano-porous anodized aluminum oxide (AAO) template based low temperature solid oxide fuel cells (LT-SOFCs), anode structure has crucial effects on electrochemical characteristics because of triple phase boundary densities and electrical connectivity of metal catalysts on porous AAO substrates. In this study, we investigated effects of fabrication processes of Ni anode for AAO template based LT-SOFCs. Ni anodes were prepared at various deposition pressure, i.e. low pressure, high pressure and low pressure–high pressure, on nano-porous AAO substrates by physical vapor deposition. Surface morphology and cross-sectional structure of various Ni anodes were systematically evaluated. Electrochemical characterizations of LT-SOFCs with various anode structures were successfully conducted at 500 °C. The Ni anode prepared at low pressure showed high electrical conductivity and low catalytic activity. However, Ni anode which was fabricated at high pressure exhibited poor electrical conductivity and good catalytic activity. Bilayer Ni anode which was deposited in sequence at low pressure and high pressure presented both good electrical conductivity and good catalytic activity. The LT-SOFC with the bilayer Ni anode cell achieved the best performance, 201 mW/cm² at 500 °C. Electrochemical impedance spectroscopy analysis was conducted to reveal detailed behaviors of AAO based LT-SOFCs. Therefore, we successfully optimized the anode structure for high performance AAO template based LT-SOFCs.

对于基于纳米多孔阳极氧化铝（AAO）模板的低温固态氧化物燃料电池（LT-SOFC），阳极结构对电化学特性具有至关重要的影响，这是因为三相边界密度和多孔AAO基底上金属催化剂的电连接性。在这项研究中，我们调查了镍阳极制造工艺对基于AAO模板的LT-SOFC的影响。通过物理气相沉积，在纳米多孔AAO衬底上以各种沉积压力（即低压，高压和低压-高压）制备镍阳极。系统评价了各种镍阳极的表面形态和截面结构。具有各种阳极结构的LT-SOFC的电化学表征已在500°C下成功进行。在低压下制备的Ni阳极显示出高电导率和低催化活性。然而，在高压下制备的Ni阳极显示出差的电导率和良好的催化活性。在低压和高压下依次沉积的双层镍阳极具有良好的导电性和良好的催化活性。带有双层镍阳极电池的LT-SOFC达到了201 mW / cm的最佳性能²在500°C下。进行了电化学阻抗谱分析，以揭示基于AAO的LT-SOFC的详细行为。因此，我们成功地优化了基于高性能AAO模板的LT-SOFC的阳极结构。