Abstract
A cathode-supported electrolyte film was fabricated by tape casting and co-sintering techniques. (La 0.8Sr 0.2) 0.95MnO 3 (LSM95), LSM95/Zr 0.89Sc 0.1Ce 0.01O 2− x (SSZ), and SSZ were used as materials of cathode substrate, cathode active layer, and electrolyte, respectively. CuO–NiO–SSZ composite anode was deposited on SSZ surface by screen-printing and sintered at 1250 °C for 2 h. The effects of CuO addition to NiO–SSZ anode on the performance of cathode-supported SOFCs were investigated. CuO can effectively improve the sintering activity of NiO–SSZ. The assembled cells were electrochemically characterized with humidified H 2 as fuel and O 2 as oxidant. With 4 wt.% CuO addition, the ohmic resistance decreased from 3 to 0.46 Ω cm 2, and at the same time the polarization resistance decreased from 3.4 to 0.74 Ω cm 2. In comparison with the cell without CuO, the maximum power density at 850 °C increased from 0.054 to 0.446 W cm −2 with 4 wt.% CuO addition.
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