報文
Microstructural Analyses of Ceria-Based Anode with Highly Dispersed Ni Electrocatalysts for Medium-Temperature Solid Oxide Fuel Cells
2005 年 73 巻 2 号 p. 128-134
詳細
2005 年 73 巻 2 号 p. 128-134
Mixed conducting samaria-doped ceria (SDC) anodes with a small amount of Ni nanoparticles (8 vol.%) exhibited a higher performance in SOFC operated at 700-900℃ than that of Ni-SDC cermet. Microstructural analyses of Ni-dispersed SDC showed that nanometer-sized Ni catalysts enhanced the anodic reaction rate by increasing the active reaction sites and lowering the electronic resistance in the anode effectively. The Ni-dispersed SDC anode exhibited a stable performance at 800℃ and 0.6 A cm-2 in humidified H2 for a long term over 1100 h.
