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Development and impact of sandwich wettability structure for gas distribution media on PEM fuel cell performance

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  • Wang, Yongxin
  • Al Shakhshir, S.
  • Li, Xianguo

Abstract

Water management is one of the key issues related to the performance, durability and cost of polymer electrolyte membrane fuel cells (PEMFCs); and the wettability of gas distribution media (GDM) is critical to the water management. In this study, a novel design is developed for GDM, referred to as sandwich wettability GDM. After being coated with a silica particle/poly(dimethylsiloxane) (PDMS) composite, the GDM has superhydrophobic surfaces with a contact angle of 162 ± 2°, but hydrophilic internal pores. Water droplets (10 [mu]l) can roll off the tilted surface of the coated GDM at an angle of 5°, and can also be drawn into the pores of the coated GDM in 10 min when it is horizontal. The surface morphology, roughness and pore structures of GDMs are characterized by profilometry, scanning electron microscopy, and porosimetry. The measured internal pore size of the coated GDM is around 7.1 [mu]m, and shows low energy resistance to gas transport. Performance testing indicates that the PEMFC equipped with sandwich wettability GDMs offers the best performance compared to those with raw GDM (untreated with surface coating), conventional GDM (with microporous layer) coated with PTFE or hydrophilic GDM (coated with silica particles).

Suggested Citation

  • Wang, Yongxin & Al Shakhshir, S. & Li, Xianguo, 2011. "Development and impact of sandwich wettability structure for gas distribution media on PEM fuel cell performance," Applied Energy, Elsevier, vol. 88(6), pages 2168-2175, June.
    • Handle: RePEc:eee:appene:v:88:y:2011:i:6:p:2168-2175
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    Citations

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    Cited by:

    1. Lan, Shunbo & Lin, Rui & Dong, Mengcheng & Lu, Kai & Lou, Mingyu, 2023. "Image recognition of cracks and the effect in the microporous layer of proton exchange membrane fuel cells on performance," Energy, Elsevier, vol. 266(C).
    2. Qin, Yanzhou & Li, Xianguo & Jiao, Kui & Du, Qing & Yin, Yan, 2014. "Effective removal and transport of water in a PEM fuel cell flow channel having a hydrophilic plate," Applied Energy, Elsevier, vol. 113(C), pages 116-126.
    3. Hosseinzadeh, Elham & Rokni, Masoud & Rabbani, Abid & Mortensen, Henrik Hilleke, 2013. "Thermal and water management of low temperature Proton Exchange Membrane Fuel Cell in fork-lift truck power system," Applied Energy, Elsevier, vol. 104(C), pages 434-444.
    4. Wu, Horng-Wen & Shih, Gin-Jang & Chen, Yi-Bin, 2018. "Effect of operational parameters on transport and performance of a PEM fuel cell with the best protrusive gas diffusion layer arrangement," Applied Energy, Elsevier, vol. 220(C), pages 47-58.
    5. Lee, Yongtaek & Kim, Bosung & Kim, Yongchan & Li, Xianguo, 2011. "Degradation of gas diffusion layers through repetitive freezing," Applied Energy, Elsevier, vol. 88(12), pages 5111-5119.
    6. Pei, Pucheng & Chen, Huicui, 2014. "Main factors affecting the lifetime of Proton Exchange Membrane fuel cells in vehicle applications: A review," Applied Energy, Elsevier, vol. 125(C), pages 60-75.
    7. Jung, Guo-Bin & Tzeng, Wei-Jen & Jao, Ting-Chu & Liu, Yu-Hsu & Yeh, Chia-Chen, 2013. "Investigation of porous carbon and carbon nanotube layer for proton exchange membrane fuel cells," Applied Energy, Elsevier, vol. 101(C), pages 457-464.
    8. Alaefour, Ibrahim & Karimi, G. & Jiao, Kui & Li, X., 2012. "Measurement of current distribution in a proton exchange membrane fuel cell with various flow arrangements – A parametric study," Applied Energy, Elsevier, vol. 93(C), pages 80-89.
    9. Lin, Chien-Hung, 2013. "Surface roughness effect on the metallic bipolar plates of a proton exchange membrane fuel cell," Applied Energy, Elsevier, vol. 104(C), pages 898-904.

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