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Experimental Studies on the Influence of H2S on Solid Oxide Fuel Cell Performance at 800 °C
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Institutionen för tillämpad fysik och elektronik, Energiteknik och termisk processkemi.ORCID-id: 0000-0003-1095-9154
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2007 (engelsk)Inngår i: Energy & Fuels, ISSN 0887-0624, E-ISSN 1520-5029, Vol. 21, nr 2, s. 1098-1101Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Short-term tests showing the influence sulfur has on solid oxide fuel cell (SOFC) performance have been performed. The experiments were performed using two single-cell SOFC setups operated at 800 degrees C. In setup I, sulfur (H2S) was mixed into the fuel gas in concentrations ranging from 20 to 100 ppm. It was found that the performance decreased with increasing sulfur concentration up to 80 ppm. The performance loss at 80 and 100 ppm sulfur was equal. At a current density of 200 mA cm(-2), the operating voltage was reduced from 0.810 V at 0 ppm H2S to 0.790 V at 100 ppm H2S, corresponding to an increase in the area-specific cell resistivity (ASR) of 0.10 Omega cm(2). In setup II, sulfur levels of 80, 120, and 240 ppm were introduced. In all these three cases the ASR increased by around 0.13 Omega cm(2). Removing the sulfur impurity when the 240 ppm H2S exposure test was finished the cell performance fully recovered, indicating no irreversible changes in the cell structure.

sted, utgiver, år, opplag, sider
Washington: American Chemical Society , 2007. Vol. 21, nr 2, s. 1098-1101
Emneord [en]
natural-gas, systems, temperature, biogas
HSV kategori
Identifikatorer
URN: urn:nbn:se:umu:diva-19746DOI: 10.1021/ef060532mISBN: 0887-0624 (tryckt)OAI: oai:DiVA.org:umu-19746DiVA, id: diva2:202473
Tilgjengelig fra: 2009-03-10 Laget: 2009-03-10 Sist oppdatert: 2018-06-09bibliografisk kontrollert

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