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Influence of devolatilized gases composition from raw coal fuel in the lab scale DCFC (direct carbon fuel cell) system

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  • Eom, Seongyong
  • Ahn, Seongyool
  • Rhie, Younghoon
  • Kang, Kijoong
  • Sung, Yonmo
  • Moon, Cheoreon
  • Choi, Gyungmin
  • Kim, Duckjool

Abstract

The effect of thermal decomposition gases on anodic reaction has been investigated in the DCFC (direct carbon fuel cell). To demonstrate this phenomenon, of three raw coals and the corresponding coal chars were selected. Their electrochemical reactions were evaluated by open circuit voltage, current density, and maximum power density under the same conditions. From this evaluation, higher DCFC performance was achieved with the raw coal than with the coal char due to the additional reaction of the produced gases. At the high operating temperature of this system (over 500 °C), the fuels undergo pyrolysis or partial gasification to release hydrogen or hydrocarbon as additional products that may affect the electrochemical reactions at the anode. The dominant effective generated gases observed in thermogravimetric analysis (TGA) experiments were H2, CH4, CO, and CO2. These gases provided additional electrochemical potential for this system.

Suggested Citation

  • Eom, Seongyong & Ahn, Seongyool & Rhie, Younghoon & Kang, Kijoong & Sung, Yonmo & Moon, Cheoreon & Choi, Gyungmin & Kim, Duckjool, 2014. "Influence of devolatilized gases composition from raw coal fuel in the lab scale DCFC (direct carbon fuel cell) system," Energy, Elsevier, vol. 74(C), pages 734-740.
    • Handle: RePEc:eee:energy:v:74:y:2014:i:c:p:734-740
    DOI: 10.1016/j.energy.2014.07.039
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    References listed on IDEAS

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    Cited by:

    1. Eom, Seongyong & Ahn, Seongyool & Kang, Kijoong & Choi, Gyungmin, 2017. "Correlations between electrochemical resistances and surface properties of acid-treated fuel in coal fuel cells," Energy, Elsevier, vol. 140(P1), pages 885-892.
    2. Cao, Tianyu & Shi, Yixiang & Jiang, Yanqi & Cai, Ningsheng & Gong, Qianming, 2017. "Performance enhancement of liquid antimony anode fuel cell by in-situ electrochemical assisted oxidation process," Energy, Elsevier, vol. 125(C), pages 526-532.
    3. Ribeirinha, P. & Alves, I. & Vázquez, F. Vidal & Schuller, G. & Boaventura, M. & Mendes, A., 2017. "Heat integration of methanol steam reformer with a high-temperature polymeric electrolyte membrane fuel cell," Energy, Elsevier, vol. 120(C), pages 468-477.
    4. Zhan, Honglei & Zhao, Kun & Xiao, Lizhi, 2015. "Spectral characterization of the key parameters and elements in coal using terahertz spectroscopy," Energy, Elsevier, vol. 93(P1), pages 1140-1145.

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