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The micro-scale analysis of the micro direct methanol fuel cell

Author

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  • Yuan, Zhenyu
  • Yang, Jie
  • Li, Xiaoyang
  • Wang, Shikai

Abstract

In this paper, the behavior of micro-scale effect in a micro direct methanol fuel cell (μDMFC) is investigated through both simulations and experiments. A model is built to describe the methanol distribution in the diffusion layer with different feature sizes. In addition, the dynamic movement of a single CO2 bubble is also simulated to study the two-phase characteristics in the micro channels with various aspect ratios. Furthermore, a metal-based transparent μDMFC with the active area of 0.64 cm2 is designed and fabricated to evaluate the two-phase flow characteristic as well as the corresponding cell performance. The experimental results reveal that when the feature size scales down to 0.6 mm and 0.4 mm, the peak power density of 27.1 mW cm−2 and 26.3 mW cm−2 are achieved at room temperature. Finally, the effect of adjusting channel aspect ratio is experimentally investigated to improve the inner convection transport and the cell output, and the results are well in agreement with the simulation.

Suggested Citation

  • Yuan, Zhenyu & Yang, Jie & Li, Xiaoyang & Wang, Shikai, 2016. "The micro-scale analysis of the micro direct methanol fuel cell," Energy, Elsevier, vol. 100(C), pages 10-17.
    • Handle: RePEc:eee:energy:v:100:y:2016:i:c:p:10-17
    DOI: 10.1016/j.energy.2016.01.057
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    References listed on IDEAS

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    Cited by:

    1. Pan, Mingzhang & Li, Chao & Liao, Jinyang & Lei, Han & Pan, Chengjie & Meng, Xianpan & Huang, Haozhong, 2020. "Design and modeling of PEM fuel cell based on different flow fields," Energy, Elsevier, vol. 207(C).
    2. Chen, Jingxian & Xu, Peihang & Lu, Jie & Ouyang, Tiancheng & Mo, Chunlan, 2021. "A prospective study of anti-vibration mechanism of microfluidic fuel cell via novel two-phase flow model," Energy, Elsevier, vol. 218(C).
    3. 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.
    4. Ouyang, Tiancheng & Chen, Jingxian & Liu, Wenjun & Xu, Peihang & Lu, Jie & Zhao, Zhongkai, 2022. "A comprehensive evaluation for microfluidic fuel cells from anti-vibration viewpoint using phase field theory," Renewable Energy, Elsevier, vol. 189(C), pages 676-693.
    5. Yang, Chii-Rong & Lu, Chang-Wei & Fu, Pin-Chi & Cheng, Chia & Chiou, Yuang-Cherng & Lee, Rong-Tsong & Tseng, Shih-Feng, 2020. "Performance evaluation of μDMFCs based on porous-silicon electrodes and methanol modification," Energy, Elsevier, vol. 192(C).

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