Pulsed laser deposition of BaCo0.4Fe0.4Zr0.1Y0.1O3-δ cathode for solid oxide fuel cells

摘要： We herein report a thin film deposition of perovskite BaCo0.4Fe0.4Zr0.1Y0.1O3-δ (BCFZY) by pulsed laser depositing (PLD) method for the use as a cathode in solid oxide fuel cells (SOFCs). The BCFZY powder was first synthesized via sol-gel method and pelletized to use it as a target in PLD system. As a result, the PLD-deposited thin film showed nano-porous morphology, preferred nano-architecture for cathode in SOFCs, without generating or transforming to secondary phase. The applicability of the thin film BCFZY to SOFC cathode was even confirmed by fabricating an SOFC with BCFZY cathode and operating it at 500 °C, where stable open-circuit voltage of 1.13 V was measured for an hour.