【摘要】 采用固相法将传统的Pr₂NiO_4+δ（PNO）与La_0.6Sr_0.4Co_0.2Fe_0.8O_3-δ（LSCF,20wt.%）进行复合，得到PNO-LSCF复合阴极材料。采用X射线衍射（XRD）,场发射扫描电子显微镜（FE-SEM）及X射线光电子能谱（XPS）对样品的结构以及氧空位浓度进行表征，采用交流阻抗谱（AC）测试样品导电性能。结果表明，PNO-LSCF复合阴极可有效地细化晶粒尺寸，提高阴极的比表面积和表面氧空位浓度，提升阴极材料的电化学性能。利用固相法将两种不同晶型的阴极材料复合，为中温固体氧化物燃料电池阴极材料的制备提供了一种有效策略。更多还原

【Abstract】 In this paper, the traditional Pr₂NiO_4+δ（PNO） and La_0.6Sr_0.4Co_0.2Fe_0.8O_3-δ（LSCF,20wt.%） are compounded by the solid-phase method to obtain the PNO-LSCF compound cathode material. The structure and oxygen vacancy concentration of the samples were characterized by X-ray diffraction（XRD）, field emission scanning electron microscopy（FE-SEM） and X-ray photoelectron spectroscopy（XPS）. The electrical conductivity of the samples was tested by alternating current impedance spectroscopy（AC）. The results show that the PNO-LSCF composite cathode can effectively refine the grain size, increase the specific surface area and surface oxygen vacancy concentration of the cathode, and improve the electrochemical performance of the cathode material. The composite of two cathode materials with different crystal forms by solid-phase method provides an effective strategy for the preparation of cathode materials for intermediate temperature solid oxide fuel cells.更多还原