| 초록 |
LaCo1-xNixO3-δ (LCN) with perovskite structure was investigated as an alternative anode for use in CH4 fuels in solid oxide fuel cells. LCN, however, reacts with the YSZ electrolyte at high temperatures to form electrochemical inactive materials such as La2Zr2O7. To minimize the interlayer by-products, the LCN was coated by double-tape casting method on the Ni/YSZ anode as a catalytic functional layer. Due to the LCN coating on the Ni/YSZ anode, the cell performance improved from 92.48 mW/cm2 to 184.27 mW/cm2 in H2 and from 60.84 mW/cm2 to 115.56 mW/cm2 in CH4 at 800℃. Due to the low catalytic activity of carbon formation, carbon deposition was significantly reduced when CH4 fuel was used in the LCN coated Ni/YSZ anode. In contrast to the Ni/YSZ anode, the LCN coated cell showed stavle performance over 200 hours under CH4 fuel condition. |
