Institutional Repository
Technical University of Crete
Technical University of Crete
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| URI: | http://purl.tuc.gr/dl/dias/4125E0F3-419C-4429-9CC8-ADEC7B2E4776 | ||
| Year | 2006 | ||
| Type of Item | Peer-Reviewed Journal Publication | ||
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| Bibliographic Citation | G. Goula, V. Kiousis, L. Nalbandian and I. V. Yentekakis, "Catalytic and electrocatalytic behavior of Ni-based cermet anodes under internal dry reforming of CH4 + CO2 mixtures in SOFCs", Solid State Ion., vol. 177, no. 19-25, pp. 2119-2123, Oct. 2006. doi:10.1016/j.ssi.2006.03.040 https://doi.org/10.1016/j.ssi.2006.03.040 | ||
| Appears in Collections |
A high temperature (700–900 °C) SOFC with yttria stabilized zirconia (YSZ) solid electrolyte was constructed and tested on direct feed of simulated biogas (CH4 + CO2) mixtures. Both catalytic, i.e. open-circuit, and electrocatalytic, i.e. closed-circuit, measurements were carried out. Open-circuit kinetic data showed that the rate of the catalytic reaction of the dry(CO2)-reforming of methane is maximized at about equimolar CO2/CH4 feed ratio for all temperatures studied. Closed-circuit data showed that cell output characteristics (i.e. current and power densities) are also maximized for equimolar CO2/CH4 biogas composition. Power densities up to 51.6 mW/cm2 (at V = 453 mV, i = 114 mA/cm2, T = 875 °C) have been obtained. Long-term operation experiments demonstrated that the constructed biogas fuel cell has very stable behavior for all three different simulated biogas compositions fed, including poor, equimolar and rich methane constitutions.
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