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Development of a porosity-graded micro porous layer using thermal expandable graphite for proton exchange membrane fuel cells

Author

Listed:
  • Chun, Jeong Hwan
  • Jo, Dong Hyun
  • Kim, Sang Gon
  • Park, Sun Hee
  • Lee, Chang Hoon
  • Lee, Eun Sook
  • Jyoung, Jy-Young
  • Kim, Sung Hyun

Abstract

In this study, a porosity-graded micro porous layer (MPL) was prepared using the double coating method to enhance the water removal ability of the gas diffusion layer (GDL). In the double MPL, the porosity of each layer was controlled using thermal expandable graphite (TEG), which could produce pores in MPL through thermal expansibility. The porosity of the inner layer of the porosity-graded MPL was smaller than the outer layer, so the gradient direction in porosity was from the MPL/catalyst layer interface to the gas diffusion backing layer (GDBL)/MPL interface. In addition, the pore forming ability of TEG and the water removal ability of porosity-graded MPL were characterized. The performance of the porosity-graded MPL was evaluated and compared to the single layer conventional MPL. The porosity-gradient structure in MPL increased the water permeability of GDL and the performance of the single cell in the high current density region. Since the porosity-graded MPL increased the water removal ability of GDL, concentration loss due to water flooding in the high current density region was decreased. These results demonstrate that porosity-graded MPL was beneficial to PEMFC, which has to operate in the high current density region.

Suggested Citation

  • Chun, Jeong Hwan & Jo, Dong Hyun & Kim, Sang Gon & Park, Sun Hee & Lee, Chang Hoon & Lee, Eun Sook & Jyoung, Jy-Young & Kim, Sung Hyun, 2013. "Development of a porosity-graded micro porous layer using thermal expandable graphite for proton exchange membrane fuel cells," Renewable Energy, Elsevier, vol. 58(C), pages 28-33.
    • Handle: RePEc:eee:renene:v:58:y:2013:i:c:p:28-33
    DOI: 10.1016/j.renene.2013.02.025
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    Cited by:

    1. Bouziane, Khadidja & Khetabi, El Mahdi & Lachat, Rémy & Zamel, Nada & Meyer, Yann & Candusso, Denis, 2020. "Impact of cyclic mechanical compression on the electrical contact resistance between the gas diffusion layer and the bipolar plate of a polymer electrolyte membrane fuel cell," Renewable Energy, Elsevier, vol. 153(C), pages 349-361.
    2. Zhang, Jingjing & Wang, Biao & Jin, Junhong & Yang, Shenglin & Li, Guang, 2022. "A review of the microporous layer in proton exchange membrane fuel cells: Materials and structural designs based on water transport mechanism," Renewable and Sustainable Energy Reviews, Elsevier, vol. 156(C).
    3. Zhang, Xiaoqing & Yang, Jiapei & Ma, Xiao & Zhuge, Weilin & Shuai, Shijin, 2022. "Modelling and analysis on effects of penetration of microporous layer into gas diffusion layer in PEM fuel cells: Focusing on mass transport," Energy, Elsevier, vol. 254(PA).
    4. Yu, Yang & Chen, Sheng & Wu, Yuanhao, 2023. "Predicting gas diffusion layer flow information in proton exchange membrane fuel cells from cross-sectional data using deep learning methods," Energy, Elsevier, vol. 282(C).
    5. 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).
    6. Paul, Biddyut & Andrews, John, 2017. "PEM unitised reversible/regenerative hydrogen fuel cell systems: State of the art and technical challenges," Renewable and Sustainable Energy Reviews, Elsevier, vol. 79(C), pages 585-599.
    7. Riccardo Balzarotti & Saverio Latorrata & Paola Gallo Stampino & Cinzia Cristiani & Giovanni Dotelli, 2015. "Development and Characterization of Non-Conventional Micro-Porous Layers for PEM Fuel Cells," Energies, MDPI, vol. 8(7), pages 1-14, July.
    8. Xing, Lei & Shi, Weidong & Su, Huaneng & Xu, Qian & Das, Prodip K. & Mao, Baodong & Scott, Keith, 2019. "Membrane electrode assemblies for PEM fuel cells: A review of functional graded design and optimization," Energy, Elsevier, vol. 177(C), pages 445-464.
    9. Wang, Qing-Hui & Yang, Song & Zhou, Wei & Li, Jing-Rong & Xu, Zhi-Jia & Ke, Yu-Zhi & Yu, Wei & Hu, Guang-Hua, 2018. "Optimizing the porosity configuration of porous copper fiber sintered felt for methanol steam reforming micro-reactor based on flow distribution," Applied Energy, Elsevier, vol. 216(C), pages 243-261.
    10. Deng, Hao & Wang, Dawei & Xie, Xu & Zhou, Yibo & Yin, Yan & Du, Qing & Jiao, Kui, 2016. "Modeling of hydrogen alkaline membrane fuel cell with interfacial effect and water management optimization," Renewable Energy, Elsevier, vol. 91(C), pages 166-177.

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