Pulsed laser deposition of BaCo_0.4Fe_0.4Zr_0.1Y_0.1O_3-δ cathode for solid oxide fuel cells

다국어 초록 (Multilingual Abstract)

<P><B>Abstract</B></P> <P>We herein report a thin film deposition of perovskite BaCo<SUB>0.4</SUB>Fe<SUB>0.4</SUB>Zr<SUB>0.1</SUB>Y<SUB>0.1</SUB>O<SUB>3-δ</SUB> (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 employ it as a target in PLD system. As a result, the PLD-deposited thin BCFZY film showed nano-porous morphology and preferred nano-architecture for cathode of SOFCs. 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.</P> <P><B>Highlights</B></P> <P> <UL> <LI> BCFZY thin film is deposited as a SOFC cathode by pulsed laser deposition. </LI> <LI> PLD deposited BCFZY thin film has no defects and preserves perovskite structure. </LI> <LI> BCFZY thin film applied electrolyte support SOFC shows excellent oxygen reduction reaction activity. </LI> </UL> </P>