Fabrication of a YSZ electrolyte layer via co-pressing/co-sintering for tubular NiO-YSZ anode-supported SOFCs

A simple and effective method to fabricated semi-cells of tubular NiO-YSZ anode-supported electrolyte film is proposed. This method is the combination of centrifugal deposition technique, cold isostatic co-pressing and co sintering. The X-ray diffraction patterns showed that the presence of NiO and YSZ, and YSZ grains of electrolyte film grow preferentially on (220), (311), (222), (400). The YSZ films are dense with the thickness of 21.4-27.3 mu m. At 1400 degrees C, the YSZ crystallite size in the electrolyte film is largest with the size of-4.6 mu m, which confirms the crystallite growth during co-sintering. The EDX mapping at the same location of EDS further reveals the presence of O, Ni, Y and Zr in the calcined powders.