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Long-term operation stability tests of intermediate and high temperature Ni-based anodes' SOFCs directly fueled with simulated biogas mixtures

Gentekakis Ioannis, Goula G., Papadam T.

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URI: http://purl.tuc.gr/dl/dias/113300B0-A846-4CEE-A5E4-763FA46A7BCD
Έτος 2012
Τύπος Δημοσίευση σε Περιοδικό με Κριτές
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Λεπτομέρειες
Βιβλιογραφική Αναφορά T. Papadam, G. Goula and I. V. Yentekakis, "Long-term operation stability tests of intermediate and high temperature Ni-based anodes' SOFCs directly fueled with simulated biogas mixtures", Int. J. Hydrog. Energy, vol. 37, no. 21, pp. 16680-16685, Nov. 2012. doi:10.1016/j.ijhydene.2012.02.147 https://doi.org/10.1016/j.ijhydene.2012.02.147
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Περίληψη

Long-term operational tests under direct biogas feeds of intermediate and high temperature solid oxide fuel cells (SOFCs) with Ni-cermet anodes, based respectively on gadolinia doped ceria (GDC) and yttria stabilized zirconia (YSZ) solid electrolytes are presented. Both biogas SOFCs seem to operate stably in a variety of biogas compositions, including poor-, equimolar- and rich-quality biogases, for a long period of time (for about 200 h at each condition, more than 600 h total operation for each cell). The only exception concerns the case of the intermediate temperature SOFC, when operated with poor biogas feed (i.e., CH4/CO2<1), where a systematic attenuation of cell performance is observed, resulting practically to its deactivation after ∼100 h. Details on cells output characteristics under all operating conditions are presented and discussed.

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