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Direct utilization of lignite coal in CoCeO2/YSZ/Agsolid oxide fuel cell

Kaklidis N., Garagounis I., Kyriakou V., Besikiotis V., Arenillas A., Menéndez J.A., G.E. Marnellos , Konsolakis Michail

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URIhttp://purl.tuc.gr/dl/dias/006A57C2-1847-4230-B0FF-FF099D8D0A80-
Identifierhttps://doi.org/10.1016/j.ijhydene.2015.02.007-
Languageen-
TitleDirect utilization of lignite coal in CoCeO2/YSZ/Ag solid oxide fuel cellen
Creator Kaklidis N.en
Creator Garagounis I.en
Creator Kyriakou V.en
Creator Besikiotis V.en
Creator Arenillas A.en
Creator Menéndez J.A.en
CreatorG.E. Marnellos en
CreatorKonsolakis Michailen
CreatorΚονσολακης Μιχαηλel
Content SummaryThe feasibility of employing lignite coal as a fuel in a Direct Carbon Fuel Cell (DCFC) of the type: lignite|Co–CeO2/YSZ/Ag|air is investigated. The impact of several parameters, related to anodic electrode composition (20, 40 and 60 wt.% Co/CeO2), cell temperature (700–800 °C), carrier gas composition (CO2/He mixtures), and total feed flow rate (10–70 cm3/min), was systematically examined. The effect of molten carbonates on DCFC performance was also investigated by employing a eutectic mixture of lithium and potassium carbonates as carbon additives. In the absence of carbonates, the optimum performance (∼10 mW cm−2 at 800 °C), was achieved by employing 20 wt.% Co/CeO2 as anodic electrode and pure CO2 as purging gas. An inferior behavior was demonstrated by utilizing He instead of CO2 atmosphere in anode compartment and by increasing purging gas flow rate. Carbonates infusion into lignite feedstock resulted in a further increase of maximum power density up to 32%. The obtained findings are discussed based also on AC impedance spectroscopy measurements, which revealed the impact of DCFC operating parameters on both ohmic and electrode resistances.en
Type of ItemΠλήρης Δημοσίευση σε Συνέδριοel
Type of ItemConference Full Paperen
Licensehttp://creativecommons.org/licenses/by-nc-nd/4.0/en
Date of Item2015-11-15-
Date of Publication2014-
SubjectDirect carbon fuel cellsen
SubjectLignite fuelen
SubjectCo/CeO2 anodeen
Bibliographic CitationN. Kaklidis, I. Garagounis, V. Kyriakou, V. Besikiotis, A. Arenillas, J.A. Menéndez, G.E. Marnellos and M. Konsolakis, “Direct Utilization of Lignite Coal in CoCeO2/YSZ/Ag Solid Oxide Fuel Cell”, in 2014 13th International Conference on Clean Energy, doi: 10.1016/j.ijhydene.2015.02.007 en

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