Cobalt-impregnated La0.75Sr0.25Cr0.5Mn0.5O3−δ anodes for solid oxide fuel cells

In this study, we will report our investigation for La0.75Sr0.25Cr0.5Mn0.5O3−δ (LSCrM) based anodes impregnated with solutions of cobalt (Co) nitrate. A YSZ supported SOFC with pure LSCrM anode and La0.7Sr0.3MnO3 (LSM) cathode exhibits the maximum power density (Pmax) of 58.7 and 5.2 mW cm−2 at 850 °C in dry H2 and dry CH4. After the modification of anode with Co nitrate, the Pmax reaches 196.2 mW cm−2 in dry H2 and 28.5 mW cm−2 in dry CH4, about 3.34 times and 5.48 times increase, respectively. These results indicate that Co is also a potential catalyst for LSCrM anode. Moreover, the effect of impregnation amount of catalyst on the cell performance is also evaluated in this study.