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Innovative design of coal utilization – A green pathway for direct conversion of coal to electricity through flow fuel cell technology

Author

Listed:
  • Zhang, Zhe
  • Liu, Congmin
  • Liu, Wei
  • Cui, Yong
  • Du, Xu
  • Xu, Dong
  • Guo, Hua
  • Deng, Yulin

Abstract

Low-rank coal, such as lignite, normally has low combustion heat and little commercial value. Combustion of low-rank coals will generate large amount of fly ashes and cause serious environmental problems. New technology for more effective use of low-rank coals with significantly less pollution is highly desired. In this study, we report an alternative method to convert coal chemical energy directly to electricity using flow fuel cell without complicated pretreatment. Practically, low-rank coal particles were first oxidized by polyoxometalate (H3[PMo12O40], denoted as POM-A) in solution on anode tank at 100–200°C. The reduced POM transferred the accepted electrons to the anode of the flow fuel cell. These electrons passed through the external circuit and were captured by another polyoxometalate (H12[P3Mo18V7O85], denoted as POM-B) at cathode tank. The novel conversion method does not generate any fly ashes. The power density of the direct lignite flow fuel cell could reach as high as 120mWcm−2.

Suggested Citation

  • Zhang, Zhe & Liu, Congmin & Liu, Wei & Cui, Yong & Du, Xu & Xu, Dong & Guo, Hua & Deng, Yulin, 2017. "Innovative design of coal utilization – A green pathway for direct conversion of coal to electricity through flow fuel cell technology," Applied Energy, Elsevier, vol. 200(C), pages 226-236.
    • Handle: RePEc:eee:appene:v:200:y:2017:i:c:p:226-236
    DOI: 10.1016/j.apenergy.2017.05.073
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    Citations

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    Cited by:

    1. Zhang, Zhe & Liu, Congmin & Liu, Wei & Du, Xu & Cui, Yong & Gong, Jian & Guo, Hua & Deng, Yulin, 2017. "Direct conversion of sewage sludge to electricity using polyoxomatelate catalyzed flow fuel cell," Energy, Elsevier, vol. 141(C), pages 1019-1026.
    2. Wei, L. & Zeng, L. & Wu, M.C. & Fan, X.Z. & Zhao, T.S., 2019. "Seawater as an alternative to deionized water for electrolyte preparations in vanadium redox flow batteries," Applied Energy, Elsevier, vol. 251(C), pages 1-1.
    3. Xiong, Yu & Kong, Dezhong & Song, Gaofeng, 2024. "Research hotspots and development trends of green coal mining: Exploring the path to sustainable development of coal mines," Resources Policy, Elsevier, vol. 92(C).
    4. Wei, L. & Wu, M.C. & Zhao, T.S. & Zeng, Y.K. & Ren, Y.X., 2018. "An aqueous alkaline battery consisting of inexpensive all-iron redox chemistries for large-scale energy storage," Applied Energy, Elsevier, vol. 215(C), pages 98-105.
    5. Yang, Hao & Zu, Xihong & Lin, Jinxin & Wu, Mengnuo & Chen, Liheng & Jiang, Xiaobin & Xie, Zixin & Ye, Tongxin & Yang, Dongjie & Qiu, Xueqing, 2023. "Direct and efficient conversion of antibiotic wastewater into electricity by redox flow fuel cell based on photothermal synergistic effect," Applied Energy, Elsevier, vol. 348(C).

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