Carbon-Tolerant Ni/ScCeSZ via Aqueous Tape Casting for IT- SOFCs

Friday, 28 July 2017: 10:20
Grand Ballroom West (The Diplomat Beach Resort)
N. Arifin (Centre of Fuel Cell and Hydrogen Research), T. Button, and R. Steinberger-Wilckens (University of Birmingham)
Due to high temperature requirement and carbon coking of Ni/8YSZ anode, Ni/10ScCeSZ as alternative anode material is developed. Ni/8YSZ and Ni/10ScCeSZ anode supported cells were fabricated in-house using multilayer aqueous tape casting method. To enhance the tolerance towards carbon deposition, Tin was introduced as dopant. The performances of the cells were tested using hydrogen and dry biogas at 700°C, 750°C and 800°C. The result from conductivity test at 600-850°C shows that the conductivity of 10ScCeSZ is higher than 8YSZ as expected. The conductivity test was performed using Van der Pauw method. From the electrochemical and impedance test, the open circuit voltage (OCV), maximum power densities, ohmic resistance and polarization resistance are compared. The test rig is connected to the mass spectroscopy to assist the understanding of the reaction inside the rig. Microstructure images are characterized using Scanning Electron Microscopy (SEM). With the result of this work, it gives brighter possibility of using biogas as fuel in the SOFC.