High temperature electrolyte supported Ni-GDC/YSZ/LSM SOFC operation on two-stage Viking gasifier product gas

Hofmann, P; Schweiger, A; Fryda, L; Panopoulos, KD; Hohenwarter, U; Bentzen, JD; Ouweltjes, JP; Ahrenfeldt, J; Henriksen, U; Kakaras, E

dc.contributor.author	Hofmann, P	en
dc.contributor.author	Schweiger, A	en
dc.contributor.author	Fryda, L	en
dc.contributor.author	Panopoulos, KD	en
dc.contributor.author	Hohenwarter, U	en
dc.contributor.author	Bentzen, JD	en
dc.contributor.author	Ouweltjes, JP	en
dc.contributor.author	Ahrenfeldt, J	en
dc.contributor.author	Henriksen, U	en
dc.contributor.author	Kakaras, E	en
dc.date.accessioned	2014-03-01T01:26:25Z
dc.date.available	2014-03-01T01:26:25Z
dc.date.issued	2007	en
dc.identifier.issn	0378-7753	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/18073
dc.subject	solid oxide fuel cell	en
dc.subject	two-stage gasification	en
dc.subject	biomass	en
dc.subject	wood gas	en
dc.subject	nickel gadolinium-doped ceria oxide	en
dc.subject.classification	Electrochemistry	en
dc.subject.classification	Energy & Fuels	en
dc.subject.other	OXIDE FUEL-CELLS	en
dc.subject.other	GADOLINIA-DOPED CERIA	en
dc.subject.other	METHANE	en
dc.subject.other	ANODES	en
dc.title	High temperature electrolyte supported Ni-GDC/YSZ/LSM SOFC operation on two-stage Viking gasifier product gas	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.jpowsour.2007.04.073	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.jpowsour.2007.04.073	en
heal.language	English	en
heal.publicationDate	2007	en
heal.abstract	This paper presents the results from a 150 h test of a commercial high temperature single planar solid oxide fuel cell (SOFC) operating on wood gas from the Viking two-stage fixed-bed downdraft gasifier, which produces an almost tar-free gas, that was further cleaned for particulates, sulphur and tar traces. The chosen SOFC was electrolyte supported with a nickel/gadolinium-doped cerium oxide (Ni-GDC) anode, known for its carbon deposition resistance. Through humidification the steam to carbon ratio (S/C) was adjusted to 0.5, which results in a thermodynamically carbon free condition at the SOFC operating temperature T = 850 degrees C. The cell operated with a fuel utilisation factor (U-f) around 30% and a current density of 260 mA cm(-2) resulting in an average power density of 207 mW cm(-2). Throughout the duration of the test, only a minor cell overpotential increase of 10 mV was observed. Nevertheless, the V-j (voltage-current density) curves on H-2/N-2 before and after the wood gas test proved identical. Extensive SEM/EDS examination of the cell's anode showed that there was neither carbon deposition nor significant shifts in the anode microstructure or contamination when compared to an identical cell tested on H-2/N-2 only. (C) 2007 Elsevier B.V. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	JOURNAL OF POWER SOURCES	en
dc.identifier.doi	10.1016/j.jpowsour.2007.04.073	en
dc.identifier.isi	ISI:000250995200040	en
dc.identifier.volume	173	en
dc.identifier.issue	1	en
dc.identifier.spage	357	en
dc.identifier.epage	366	en