High-performance solid oxide fuel cells based on a thin La0.8Sr0.2Ga0.8Mg0.2O3- δ electrolyte membrane supported by a nickel-based anode of unique architecture

作者：Sun, Haibin; Chen, Yu; Chen, Fanglin; Zhang, Yujun; Liu, Meilin^*

来源：Journal of Power Sources, 2016, 301: 199-203.

DOI：10.1016/j.jpowsour.2015.10.008

• Freeze-drying tape-casting
• Anode-supported solid oxide fuel cell
• La0.8Sr0.2Ga0.8Mg0.2O3-delta electrolyte membrane
• Ion-infiltration

Solid oxide fuel cells (SOFCs) based on a thin La0.8Sr0.2Ga0.8Mg0.2O3-delta (LSGM) electrolyte membrane supported by a nickel-based anode often suffers from undesirable reaction/diffusion between the Ni anode and the LSGM during high-temperature co-firing. In this study, a high performance intermediate-temperature SOFC is fabricated by depositing thin LSGM electrolyte membranes on a LSGM backbone of unique architecture coated with nano-sized Ni and Gd0.1Ce0.9O2-delta (GDC) particles via a combination of freeze-drying tape-casting, slurry drop-coating, and solution infiltration. The thickness of the dense LSGM electrolyte membranes is similar to 30 mu m while the undesirable reaction/diffusion between Ni and LSGM are effectively hindered because of the relatively low firing temperature, as confirmed by XRD analysis. Single cells show peak power densities of 1.61 W cm(-2) at 700 degrees C and 0.52W cm(-2) at 600 degrees C using 3 vol% humidified H-2 as fuel and ambient air as oxidant. The cell performance is very stable for 115 h at a constant current density of 0.303 A cm(-2) at 600 degrees C.

• 出版日期2016-1-1
• 单位山东大学