Highly sulfur poisoning-tolerant BaCeO3-impregnated La0.6Sr0.4Co0.2Fe0.8O3−δ cathodes for solid oxide fuel cells
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© 2018 IOP Publishing Ltd. Electrochemical performance and sulfur (SO2) tolerance were studied on pristine La0.6Sr0.4Co0.2Fe0.8O3-d(LSCF) and BaCeO3-impregnated LSCF (BaCeO3-LSCF) composite cathodes of solid oxide fuel cells (SOFCs). Compared to pristine LSCF electrodes, BaCeO3-LSCF composite electrodes exhibited reduced electrode polarization resistance and significantly lower activation energy for the O2reduction reaction, indicating that BaCeO2impregnation is effective at promoting the electrocatalytic activity of LSCF electrodes at low temperatures. Most significantly, BaCeO3-LSCF cathodes show remarkable tolerance and resistance towards sulfur via the formation of BaSO4instead of SrSO4on the electrode surface, preventing excess Sr deficiency at the A-site of LSCF perovskite and thus mitigating the sulfur poisoning effect. BaCeO3-LSCF cathodes show potential as highly active and excellent anti-sulfur oxygen electrodes for SOFCs.
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Effect of SO2 Poisoning on the Electrochemical Activity of La0.6Sr0.4Co0.2Fe0.8O3-δ Cathodes of Solid Oxide Fuel CellsWang, C.; He, S.; Chen, K.; Rowles, Matthew; Darvish, S.; Zhong, Y.; Jiang, San Ping (2017)The effect of sulfur deposition and poisoning on the electrochemical activity of La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) cathode of solid oxide fuel cells (SOFCs) for the O2 reduction reaction is studied under accelerated ...
Wang, C.; Jiang, San Ping (2015)Sulfur in the air stream is one of the major contaminants affecting the performance stability of cathodes of solid oxide fuel cell (SOFCs) such as La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) and La0.8Sr0.2MnO3 (LSM) perovskite oxide. ...
Sulfur Deposition and Poisoning of La0.6Sr0.4Co0.2Fe0.8O3-[delta] Cathode Materials of Solid Oxide Fuel CellsWang, C.; Chen, Kongfa; Jiang, San Ping (2014)Sulfur in the air stream is one of the major contaminants affecting the performance stability of cathodes of solid oxide fuel cells (SOFCs) such as La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) perovskite. Here sulfur deposition and ...