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

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Kim, Young Jin;Lim, Hyung-Tae

  • 투고 : 2015.07.24
  • 심사 : 2015.08.06
  • 발행 : 2015.09.30

초록

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.

키워드

Solid oxide fuel cells;Internal reforming;Alternative fuel

참고문헌

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피인용 문헌

  1. 1. Degradation Comparison of Hydrogen and Internally Reformed Methane-Fueled Solid Oxide Fuel Cells vol.53, pp.5, 2016, doi:10.4191/kcers.2015.52.5.325
  2. 2. Effects of Partial Substitution of CeO2 with M2O3 (M = Yb, Gd, Sm) on Electrical Degradation of Sc2O3 and CeO2 Co-doped ZrO2 vol.53, pp.5, 2016, doi:10.4191/kcers.2015.52.5.325

과제정보

연구 과제 주관 기관 : National Research Foundation of Korea (NRF)