Effect of Operating Temperature on Durability for Direct Butane Utilization of Microtubular Solid Oxide Fuel Cells

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  • SUMI Hirofumi
    Advanced Manufacturing Research Institute, National Institute of Advanced Industrial Science and Technology
  • YAMAGUCHI Toshiaki
    Advanced Manufacturing Research Institute, National Institute of Advanced Industrial Science and Technology
  • HAMAMOTO Koichi
    Advanced Manufacturing Research Institute, National Institute of Advanced Industrial Science and Technology
  • SUZUKI Toshio
    Advanced Manufacturing Research Institute, National Institute of Advanced Industrial Science and Technology
  • FUJISHIRO Yoshinobu
    Advanced Manufacturing Research Institute, National Institute of Advanced Industrial Science and Technology

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The effect of operating temperature on durability was investigated for direct butane utilization using microtubular solid oxide fuel cells (SOFCs). At 710°C, the performance of the Ni-Gd doped ceria (Ni-GDC) anode deteriorated rapidly for less than 2 h in butane fuel with relatively low steam/carbon (S/C) ratio at 0.044 because of a large amount of carbon deposition by butane cracking. The carbon nanofiber grew up from catalysis in the Ni-GDC anode after direct butane utilization at 660°C for 15 h. The carbon deposition rate in wet butane was slower than that in dry butane below 660°C on the Ni-GDC composite, because the oxidation of deposited carbon was also promoted by catalysis in the presence of water. The electric power could be generated continuously for more than 24 h in butane at S/C = 0.044 and relatively low operating temperature at 610°C using the Ni-GDC anode. Decrease in the operating temperature realized high durability against carbon deposition for direct butane utilization of SOFCs using the Ni-GDC anode.

収録刊行物

  • Electrochemistry

    Electrochemistry 81 (2), 86-91, 2013

    公益社団法人　電気化学会

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