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http://dx.doi.org/10.4191/kcers.2015.52.5.325

Performance of Solid Oxide Fuel Cells with Direct Internal Reforming of Methane  

Kim, Young Jin (School of Materials Science and Engineering, Changwon National University)
Lim, Hyung-Tae (School of Materials Science and Engineering, Changwon National University)
Publication Information
Journal of the Korean Ceramic Society / v.52, no.5, 2015 , pp. 325-330 More about this Journal
Abstract
Performance of solid oxide fuel cells (SOFCs), in comparison with that under hydrogen fuel, were investigated under direct internal reforming conditions. Anode supported cells were fabricated with an Ni+YSZ anode, YSZ electrolyte, and LSM+YSZ cathode for the present work. Measurements of I-V curves and impedance were conducted with S/C (steam to carbon) ratio of ~ 2 at $800^{\circ}C$. The outlet gas was analyzed using gas chromatography under open circuit condition; the methane conversion rate was calculated and found to be ~ 90% in the case of low flow rate of methane and steam. Power density values were comparable for both cases (hydrogen fuel and internal steam reforming of methane), and in the latter case the cell performance was improved, with a decrease in the flow rate of methane with steam, because of the higher conversion rate. The present work indicates that the short-term performance of SOFCs with conventional Ni+YSZ anodes, in comparison with that under hydrogen fuel, is acceptable under internal reforming condition with the optimized fuel flow rate and S/C ratio.
Keywords
Solid oxide fuel cells; Internal reforming; Alternative fuel;
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