以硝酸镧、硝酸镍和硝酸铁为原料，柠檬酸作燃料低温燃烧合成固体氧化物燃料电池阴极材料LaNi0.6Fe0.4O3-δ. X射线衍射(XRD)图谱显示600°C煅烧可形成单一的LaNi0.6Fe0.4O3-δ钙钛矿相，电子显微镜(TEM和SEM)照片看出颗粒尺寸＜100nm.电池交流阻抗谱图表明1050°C烧结的对称电池LaNi0.6Fe0.4O3-δ/ScSZ/LaNi0.6Fe0.4O3-δ极化电阻最小，在850°C、800°C和750°C下搁置电极电阻分别为0.12Ω?cm2、0.27Ω?cm2和0.70Ω?cm2. Fe-Cr合金对搁置于750°C的LaNi0.6Fe0.4O3-δ电极性能的影响是，时间增长，由于Cr2O3(s)在LaNi0.6Fe0.4O3-δ/ScSZ界面上沉积，阻凝活性粒子扩散，从而增加电极极化电阻。

The LaNi0.6Fe0.4O3-δ as cathode material for intermediate temperature solid oxide fuel cell was prepared using a combustion synthesis technique. The X-ray diffraction (XRD) pattern showed that the single-phase LaNi0.6Fe0.4O3-δ perovskite could be obtained after heat treatment at 600°C. The TEM and SEM images of the synthesized powders revealed that the grains were 50-100nm. According to the electrochemical impedance spectra (EIS), the polarization resistance of the symmetric cell LaNi0.6Fe0.4O3-δ/ScSZ/LaNi0.6Fe0.4O3-δ sintered at 1050°C was the smallest (0.70Ω?cm2, 0.27Ω?cm2 and 0.12Ω?cm2 at 750°C, 800°C and 850°C, respectively). In the presence of the Fe-Cr alloy interconnection at 750°C, the cathode performance showed that, with the time increasing, Cr2O3(s) deposited at the LaNi0.6Fe0.4O3?δ/ScSZ interface suppressed the diffusion of active particle and increased the polarization resistance.