Enhanced Sulfur Tolerance of Nickel-Based Anodes for Oxygen-Ion Conducting Solid Oxide Fuel Cells by Incorporating a Secondary Water Storing Phase
dc.contributor.author | Wang, F. | |
dc.contributor.author | Wang, W. | |
dc.contributor.author | Qu, J. | |
dc.contributor.author | Zhong, Y. | |
dc.contributor.author | Tade, Moses | |
dc.contributor.author | Shao, Zongping | |
dc.date.accessioned | 2017-01-30T12:58:40Z | |
dc.date.available | 2017-01-30T12:58:40Z | |
dc.date.created | 2015-02-03T20:00:39Z | |
dc.date.issued | 2014 | |
dc.identifier.citation | Wang, F. and Wang, W. and Qu, J. and Zhong, Y. and Tade, M. and Shao, Z. 2014. Enhanced Sulfur Tolerance of Nickel-Based Anodes for Oxygen-Ion Conducting Solid Oxide Fuel Cells by Incorporating a Secondary Water Storing Phase. Environmental Science & Technology. 48 (20): pp. 12427-12434. | |
dc.identifier.uri | http://hdl.handle.net/20.500.11937/27376 | |
dc.identifier.doi | 10.1021/es503603w | |
dc.description.abstract |
In this work, a Ni+BaZr0.4Ce0.4Y0.2O3-δ (Ni+BZCY) anode with high water storage capability is used to increase the sulfur tolerance of nickel electrocatalysts for solid oxide fuel cells (SOFCs) with an oxygen-ion conducting Sm0.2Ce0.8O1.9 (SDC) electrolyte. Attractive power outputs are still obtained for the cell with a Ni+BZCY anode that operates on hydrogen fuels containing 100-1000 ppm of H2S, while for a similar cell with a Ni+SDC anode, it displays a much reduced performance by introducing only 100 ppm of H2S into hydrogen. Operating on a hydrogen fuel containing 100 ppm of H2S at 600 °C and a fixed current density of 200 mA cm-2, a stable power output of 148 mW cm-2 is well maintained for a cell with a Ni+BZCY anode within a test period of 700 min, while it was decreased from an initial value of 137 mW cm-2 to only 81 mW cm-2 for a similar cell with a Ni+SDC anode after a test period of only 150 min. After the stability test, a loss of the Ni percolating network and reaction between nickel and sulfur appeared over the Ni+SDC anode, but it is not observed for the Ni+BZCY anode. This result highly promises the use of water-storing BZCY as an anode component to improve sulfur tolerance for SOFCs with an oxygen-ion conducting SDC electrolyte. | |
dc.publisher | American Chemical Society | |
dc.title | Enhanced Sulfur Tolerance of Nickel-Based Anodes for Oxygen-Ion Conducting Solid Oxide Fuel Cells by Incorporating a Secondary Water Storing Phase | |
dc.type | Journal Article | |
dcterms.source.volume | 48 | |
dcterms.source.startPage | 12427 | |
dcterms.source.endPage | 12434 | |
dcterms.source.issn | 1520-5851 | |
dcterms.source.title | Environmental Science & Technology | |
curtin.department | Department of Chemical Engineering | |
curtin.accessStatus | Fulltext not available |