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Mass transport optimization in the anode diffusion layer of a micro direct methanol fuel cell

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  • Yuan, Zhenyu
  • Yang, Jie
  • Zhang, Yufeng
  • Wang, Shikai
  • Xu, Tingnian

Abstract

In this paper, the gradient AGDL (anode gas diffusion layer) is applied to prompt the methanol/CO2 transport, and improve the performance of the μDMFC (micro direct methanol fuel cell). A two-dimensional, two-phase model coupled with mass/momentum transports and hydrophobic characteristic is first established, with the methanol concentration distribution, CO2 volume fraction, and the polarization curve simulated. In addition, a metal-based μDMFC with the effective area of 0.64 cm2 is fabricated, such that detailed experiments are conducted to validate the simulation results. The results reveal that when the AGDL is treated with 10 wt% of PTFE (Polytetrafluoroethylene), the best performance with a peak power density of 19 mW cm−2 is achieved at room temperature. Finally, a novel AGDL structure with gradient PTFE content is prepared to improve the two-phase convection transport and the power density.

Suggested Citation

  • Yuan, Zhenyu & Yang, Jie & Zhang, Yufeng & Wang, Shikai & Xu, Tingnian, 2015. "Mass transport optimization in the anode diffusion layer of a micro direct methanol fuel cell," Energy, Elsevier, vol. 93(P1), pages 599-605.
    • Handle: RePEc:eee:energy:v:93:y:2015:i:p1:p:599-605
    DOI: 10.1016/j.energy.2015.09.067
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    References listed on IDEAS

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    1. Na, Youngseung & Kwon, Jungmin & Kim, Hyun & Cho, Hyejung & Song, Inseob, 2013. "Characteristics of a direct methanol fuel cell system with the time shared fuel supplying approach," Energy, Elsevier, vol. 50(C), pages 406-411.
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    Cited by:

    1. Li, Yang & Zhang, Xuelin & Yuan, Weijian & Zhang, Yufeng & Liu, Xiaowei, 2018. "A novel CO2 gas removal design for a micro passive direct methanol fuel cell," Energy, Elsevier, vol. 157(C), pages 599-607.
    2. Chen, Xueye & Li, Tiechuan & Shen, Jienan & Hu, Zengliang, 2017. "From structures, packaging to application: A system-level review for micro direct methanol fuel cell," Renewable and Sustainable Energy Reviews, Elsevier, vol. 80(C), pages 669-678.

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