Efficiency of Nickel/Yttria Stabilized Zirconia Anode-supportedSolid Oxide Fuel Cell with MnFe2O4 Barrier Layer
WU Xiaoyan1, TAN Wei2, LUO Caiwu1, ZHANG Xiaowen1, LI Mi1, FANG Qi1, TAN Wenfa1
1 School of Resource & Environment and Safety Engineering, University of South China, Hengyang 421001 2 Graduate School, University of South China, Hengyang 421001
Abstract: In order to improve carbon deposition resistance of nickel/yttria stabilized zirconia (Ni-YSZ) anode-supported solid oxide fuel cell (SOFC) in carbon-containing fuels, barrier layer was prepared on the Ni-YSZ anode by screen printing in this research. The barrier layer material was spinel manganese ferrite (MnFe2O4), which was produced by high-temperature calcination. The cell with barrier layer and the blank cell were tested in simulated biosygas at 750 ℃ to compare efficiency and carbon deposition resistance. The anodes were characterized by scanning electron microscope (SEM) coupled with an INCA Energy-dispersive X-ray spectroscopy (EDS) before and after performances. Experimental results showed that there was a good matching between Ni-YSZ anode and MnFe2O4 barrier layer. A little decreasing of the cell performance was observed under operation. It was confirmed that the modified anode had an increase in carbon deposition resistance in the simulated biosyngas. The best performance was obtained when the MnFe2O4 slurry was added with 16wt% graphite. This investigation is of great significance to improve and develop the ability of the Ni-YSZ anode carbon deposition resistance with biosyngas feeding.
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2019, Vol. 33 
