Fabrication of planar-type SOFC single cells by a novel vacuum dip-coating method and co-firing/infiltration techniques

A novel vacuum dip-coating method has been adopted to form a dense thin yttrium stabilized zirconia (YSZ) layer on the pre-fired Ni/YSZ anode substrate. Scandia-stabilized Zirconia (ScSZ) was screen-printed onto the YSZ layer as the cathode backbone material and co-fired in a single step. Sm_0.5Sr_0.5CoO_3−δ (SSC) nanoparticles were infiltrated into the ScSZ porous layer with a loading of 29.17wt% to gain the composite cathode. Without any optimization, the cell reached a maximum power density of 0.85 W cm⁻² with an area-specific resistance of 0.914 Ω cm² at 750 °C.