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dc.contributor.authorKaklidis, N.es_ES
dc.contributor.authorKyriakou, V.es_ES
dc.contributor.authorMarnellos, G.E.es_ES
dc.contributor.authorStrandbakke, R.es_ES
dc.contributor.authorArenillas de la Puente, Anaes_ES
dc.contributor.authorMenéndez Díaz, José Ángeles_ES
dc.contributor.authorKonsolakis, Michalises_ES
dc.date.accessioned2016-06-02T11:55:32Z-
dc.date.available2016-06-02T11:55:32Z-
dc.date.issued2015-12-28-
dc.identifier.citationSolid State Ionics 288: 140-146 (2016)es_ES
dc.identifier.issn0167-2738-
dc.identifier.urihttp://hdl.handle.net/10261/132920-
dc.descriptionProceedings of the 20th International Conference on Solid State Ionics SSI-20es_ES
dc.description.abstractThe impact of fuel heat pretreatment on the performance of a direct carbon fuel cell (DCFC) is investigated by utilizing lignite (LG) coal as feedstock in a solid oxide fuel cell of the type: lignite | Co–CeO2/YSZ/Ag | air. Four LG samples are employed as feedstock: (i) pristine lignite (LG), and differently heat treated LG samples under inert (He) atmosphere at (ii) 200 °C overnight (LG200), (iii) 500 °C for 1 h (LG500) and (iv) 800 °C for 1 h (LG800). The impact of several process parameters, related to cell temperature (700–800 °C), carrier gas type (He or CO2), and molten carbonate infusion into the feedstock on the DCFC performance is additionally explored. The proximate and ultimate analysis of the original and pretreated lignite samples show that upon increasing the heat treatment temperature the carbon content is monotonically increased, whereas the volatile matter, moisture, sulfur and oxygen contents are decreased. In addition, although volatiles are eliminated upon increasing the treatment temperature and as a consequence more ordered carbonaceous structure remained, the heat treatment increases the reactivity of lignite with CO2 due mainly to the increased carbon content. These modifications are reflected on the achieved DCFC performance, which is clearly improved upon increasing the treatment temperature. An inferior cell performance is demonstrated by utilizing inert He instead of reactive CO2 atmosphere, as purging gas in the anode compartment, while carbonate infusion always results in ca. 70–100% increase in power output (15.1 mW cm− 2 at 800 °C). The obtained findings are discussed based also on AC impedance spectroscopy measurements, which revealed the impact of LG physicochemical characteristics and DCFC operating parameters on both ohmic and electrode resistances.es_ES
dc.description.sponsorshipThe authors would like to acknowledge financial support from the European project “Efficient Conversion of Coal to Electricity — Direct Coal Fuel Cells”, which is funded by the Research Fund for Carbon & Steel (RFCR CT-2011-00004).es_ES
dc.language.isoenges_ES
dc.publisherElsevieres_ES
dc.relation.isversionofPostprintes_ES
dc.rightsopenAccessen_EN
dc.subjectDirect carbon fuel celles_ES
dc.subjectLignite fueles_ES
dc.subjectCo/CeO2 anodees_ES
dc.subjectCarbonateses_ES
dc.subjectHeat treatmentes_ES
dc.titleEffect of fuel thermal pretreament on the electrochemical performance of a direct lignite coal fuel celles_ES
dc.typeartículoes_ES
dc.identifier.doi10.1016/j.ssi.2015.12.003-
dc.description.peerreviewedPeer reviewedes_ES
dc.relation.publisherversionhttp://dx.doi.org/10.1016/j.ssi.2015.12.003es_ES
dc.embargo.terms2017-12-29es_ES
dc.rights.licensehttp://creativecommons.org/licenses/by-nc-nd/4.0/-
dc.relation.csices_ES
oprm.item.hasRevisionno ko 0 false*
dc.type.coarhttp://purl.org/coar/resource_type/c_6501es_ES
item.openairetypeartículo-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextopen-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
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