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<正>Ba_(1.0)Co_(0.7)Fe_(0.2)Nb_(0.1)O_(3-δ)-Ce_(0.8)Y_(0.2)O_(2-δ)(BCFN-YDC)porous layer were coated on the cathode of Ni-YSZ│YSZ│GDC│BCFN single cell by screen printing.X-ray diffraction characterization showed that the coating materials were chemic