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Ricoul, F., Subrenat, A., Joubert, O. & La Salle, L. G. A. (2018) Electricity production from lignocellulosic biomass by direct coupling of a gasifier and a nickel/yttria-stabilized zirconia-based solid oxide fuel cell: influence of the H2S content of the syngas onto performances and aging. Journal of Solid State Electrochemistry, 22 2789–2800.
Added by: Richard Baschera (2018-10-04 15:04:06) Last edited by: Richard Baschera (2018-10-04 15:20:04) |
| Type de référence: Article DOI: 10.1007/s10008-018-3961-8 Clé BibTeX: Ricoul2018 Voir tous les détails bibliographiques  |
Catégories: ST2E Créateurs: Joubert, La Salle, Ricoul, Subrenat Collection: Journal of Solid State Electrochemistry |
Consultations : 1/430
Indice de consultation : 4% Indice de popularité : 1% |
| Résumé |
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The aim of this work is to study the reactivity of a Ni-YSZ-based solid oxide fuel cell (SOFC) fueled with gaseous mixtures having the same composition as the syngas issued from a fixed-bed downdraft and staged gasification pilot. The syngas issued from the gasifier contains some ppm(v) of H2S, and in order to adapt the purification process, the influence of this compound on the Ni-YSZ-based SOFCs is evaluated at 600 and 850 A degrees C. The influence of H2S depends on fuel composition, temperature but also of current density. In H-2-N-2 mixtures and only at 600 A degrees C, a significant decrease of cell performances is observed for H2S {>} 4.5 ppm(v). For H-2-CO-CO2-N-2 mixtures, the influence is more important since a small decrease of performance can be observed for 1 ppm(v) of H2S even at 850 A degrees C. Nevertheless, at 600 A degrees C, it is possible to avoid damage by limiting the current density. Aging experiments, realized at 750 A degrees C, show that the influence of 1 and 2 ppm(v) of H2S is more important during the first 20 h and is reversible: at this temperature, after poisoning with 1 ppm(v) of H2S during 72 h, the cell recovers 91% of its initial power density after 100 h in pure hydrogen, and after subsequent poisoning with 2 ppm(v) of H2S during 77 h, the cell recovers 94% of its initial power density after 168 h in pure hydrogen.
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