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Micro-tubular solid oxide fuel cell stack operated with catalytically enhanced porous media fuel-rich combustor

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  • Zeng, Hongyu
  • Gong, Siqi
  • Shi, Yixiang
  • Wang, Yuqing
  • Cai, Ningsheng

Abstract

The flame fuel cell (FFC) is advantageous for its simple setup, quick start-up, and high fuel flexibility. However, one important drawback of the FFC is its relatively low electrical efficiency, which is mainly limited by the reforming efficiency of the burner and fuel utilization. In this study, to increase the reforming efficiency and fuel utilization, a catalytically enhanced porous media combustor was integrated with a micro-tubular solid oxide fuel cell stack. The second layer of the porous material was impregnated with 0.5 wt% Rh, improving the reforming efficiency from 49% to 64.8%. The fuel utilization was demonstrated to be 32.6% when the equivalence ratio was 1.6 and the inlet flow rate of combustion products to the anode of the stack was 200 mL min−1. The effects of the equivalence ratio and anode gas flow rate on the electrochemical performance and efficiency were investigated. A power density of 72.9 mW cm−2 and a total electrical efficiency of 12.9% were obtained at a voltage of 0.76 V and an equivalence ratio of 2.4.

Suggested Citation

  • Zeng, Hongyu & Gong, Siqi & Shi, Yixiang & Wang, Yuqing & Cai, Ningsheng, 2019. "Micro-tubular solid oxide fuel cell stack operated with catalytically enhanced porous media fuel-rich combustor," Energy, Elsevier, vol. 179(C), pages 154-162.
    • Handle: RePEc:eee:energy:v:179:y:2019:i:c:p:154-162
    DOI: 10.1016/j.energy.2019.04.125
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    References listed on IDEAS

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    1. Wang, Yuqing & Zeng, Hongyu & Cao, Tianyu & Shi, Yixiang & Cai, Ningsheng & Ye, Xiaofeng & Wang, Shaorong, 2016. "Start-up and operation characteristics of a flame fuel cell unit," Applied Energy, Elsevier, vol. 178(C), pages 415-421.
    2. Wang, Yuqing & Zeng, Hongyu & Shi, Yixiang & Cao, Tianyu & Cai, Ningsheng & Ye, Xiaofeng & Wang, Shaorong, 2016. "Power and heat co-generation by micro-tubular flame fuel cell on a porous media burner," Energy, Elsevier, vol. 109(C), pages 117-123.
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    Cited by:

    1. Ghotkar, Rhushikesh & Milcarek, Ryan J., 2020. "Investigation of flame-assisted fuel cells integrated with an auxiliary power unit gas turbine," Energy, Elsevier, vol. 204(C).
    2. Alexander R. Hartwell & Cole A. Wilhelm & Thomas S. Welles & Ryan J. Milcarek & Jeongmin Ahn, 2022. "Effects of Synthesis Gas Concentration, Composition, and Operational Time on Tubular Solid Oxide Fuel Cell Performance," Sustainability, MDPI, vol. 14(13), pages 1-16, June.
    3. Rhushikesh Ghotkar & Ellen B. Stechel & Ivan Ermanoski & Ryan J. Milcarek, 2020. "Hybrid Fuel Cell—Supercritical CO 2 Brayton Cycle for CO 2 Sequestration-Ready Combined Heat and Power," Energies, MDPI, vol. 13(19), pages 1-20, September.
    4. Milcarek, Ryan J. & DeBiase, Vincent P. & Ahn, Jeongmin, 2020. "Investigation of startup, performance and cycling of a residential furnace integrated with micro-tubular flame-assisted fuel cells for micro-combined heat and power," Energy, Elsevier, vol. 196(C).
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    6. Skabelund, B.B. & Milcarek, R.J., 2022. "Review of thermal partial oxidation reforming with integrated solid oxide fuel cell power generation," Renewable and Sustainable Energy Reviews, Elsevier, vol. 168(C).

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