BaCo0.7Fe0.2Nb0.1O3 (-) (delta) (BCFN)-Ce0.9Gd0.1O1.95 (GDC) composite cathode is synthesized on GDC electrolyte wafer by using a spin coating method. The effects of preparing conditions such as the spin coated times, the amount and size of pore former on the morphological features (thickness and porosity) have been systematically investigated by scanning electron microscopy and X-ray diffraction. It is shown that the thickness, component and porosity play important roles in determining the polarization resistance of the composite cathode. The polarization resistance of BCFN-GDC composite cathode is 1.85, 0.62, 0.25, 0.14 and 0.05 Omega cm(2) at 600, 650, 700, 750, and 800 degrees C under the optimal preparation parameters, respectively. (C) 2016 Elsevier B.V. All rights reserved.