Development of Ceria-Based Microtubular Solid Oxide Fuel Cells

Wednesday, October 14, 2015: 10:40
Remington B (Hyatt Regency)
H. Sumi, T. Yamaguchi, H. Shimada, K. Hamamoto (National Institute of AIST), and T. Suzuki (National Institute of AIST)
Gadolinia-doped ceria (GDC) has higher oxide-ion conductivity than a conventional yttria-stabilized zirconica (YSZ).  GDC is one of the most desirable materials as an electrolyte for intermediate temperature solid oxide fuel cells (IT-SOFCs) operated below 600 °C.  A nickel-GDC cermet anode has high catalytic and electrochemical activities against fuel oxidation in SOFCs.  For example, direct butane utilization was successfully demonstrated for Ni-GDC anode-supported microtubular SOFCs.  Furthermore, an La0.6Sr0.4Co0.2Fe0.8O3(LSCF)-GDC composite cathode shows high performance at intermediate temperature.  We applied GDC materials to electrolyte, anode and cathode for microtubular SOFCs.