Show simple item record

dc.contributor.authorSu, C.
dc.contributor.authorRan, R.
dc.contributor.authorWang, W.
dc.contributor.authorShao, Zongping
dc.date.accessioned2017-01-30T13:59:20Z
dc.date.available2017-01-30T13:59:20Z
dc.date.created2015-10-29T04:09:38Z
dc.date.issued2011
dc.identifier.citationSu, C. and Ran, R. and Wang, W. and Shao, Z. 2011. Coke formation and performance of an intermediate-temperature solid oxide fuel cell operating on dimethyl ether fuel. Journal of Power Sources. 196 (4): pp. 1967-1974.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/37055
dc.identifier.doi10.1016/j.jpowsour.2010.10.011
dc.description.abstract

Dimethyl ether (DME) as a fuel of SOFCs is investigated with great attention paid to coke formation over the Ni-YSZ anode. DME is easily decomposed to CH4, CO and H2 at temperatures above 700 °C, with total conversion occurring at 850 °C over the Ni-YSZ catalyst. These data suggest that the DME electro-oxidation likely proceeds via an indirect pathway. O2-TPO analysis, laser Raman spectroscopy and SEM-EDX characterizations demonstrate coke formation over Ni-YSZ, which is obvious and become more prevalent at higher temperatures. The introduction of CO2 in the fuel gas decreases the CH4 selectivity and effectively suppresses coke formation above 700 °C. The suppression effect is increasingly apparent at higher temperatures. At 850 °C, the anode still maintains geometric integrity after exposure to DME-CO2 (1:1, volume ratio) under OCV condition. With DME or DME-CO2, the fuel cell power output is comparable to results obtained by operating with 3% water humidified hydrogen. No obvious cell degradation from the anode is observed when operating with DME-CO2, while it is obvious with DME. The introduction of CO2 may be a good choice to suppress the coke formation when operating on DME; however, the proper selection of operation temperature is of significant importance. © 2010 Elsevier B.V.

dc.titleCoke formation and performance of an intermediate-temperature solid oxide fuel cell operating on dimethyl ether fuel
dc.typeJournal Article
dcterms.source.volume196
dcterms.source.number4
dcterms.source.startPage1967
dcterms.source.endPage1974
dcterms.source.issn0378-7753
dcterms.source.titleJournal of Power Sources
curtin.departmentDepartment of Chemical Engineering
curtin.accessStatusFulltext not available


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record