Effect of Ce<sub>0.8</sub>Sm<sub>0.2</sub>O<sub>1.9</sub> interlayer on the electrochemical performance of La<sub>0.75</sub>Sr<sub>0.25</sub>Cr <sub>0.5</sub>Mn<sub>0.5</sub>O<sub>3-δ</sub>-Ce<sub>0.8</sub>Sm <sub>0.2</sub>O<sub>1.9</sub> composite anodes for intermediate-temperature solid oxide fuel cells - 指纹