Fabrication and evaluation of flat thick film type solid oxide fuel cell
Abstract Flat thick film type solid oxide fuel cell was developed using slip casting method. The electrolyte fabricated by this method was dense enough to attain the theoretical open circuit voltage of the cell at 1000°C. The iR-drop largely contributes to the overall resistance as compared with electrode overvoltages. Thus, the overall resistance decreased linearly with decreasing electrolyte thickness, whereas the electrode resistance were unchanged. La0.6Sr0.4CoO3 exhibited higher activity, but the solid state reaction at the electrode-electrolyte interface and the exfoliation of the electrode were more serious than those of La0.6Sr0.4MnO3. The anodic overvoltage of Ni was the smallest of single metals. The fuel cell consisting of 150 microm thick electrolyte, La0.6Sr0.4MnO3 cathode, and NiOYSZ cermet anode attained maximum power density of 695mW·cm−2 at 1000°C.