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Effect of Pt loading and catalyst type on the pore structure of porous electrodes in polymer electrolyte membrane (PEM) fuel cells

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  • Zhao, Jian
  • Ozden, Adnan
  • Shahgaldi, Samaneh
  • Alaefour, Ibrahim E.
  • Li, Xianguo
  • Hamdullahpur, Feridun

Abstract

Catalyst layer (CL) has a significant impact on the overall pore structure of the entire electrodes, thereby impacting the transport processes and the performance of polymer electrolyte membrane (PEM) fuel cells. In this study, the contribution of the CL to the entire electrode structure is experimentally investigated. The electrodes are prepared by using two types of catalysts with different platinum/carbon (Pt/C) ratios and Pt loadings and characterized by the method of standard porosimetry (MSP). The results show that for the same type of catalysts, as the Pt loading is increased, both the porosity and mean pore size of the electrode decrease, whereas the pore surface area increases. For a constant Pt loading, a lower Pt/C ratio results in a thicker electrode with a smaller porosity, smaller pore size, and larger pore surface area. The fractal dimension is found to be a good representative of the complexity of the pore structure of the electrode; a larger fractal dimension is detected for a higher Pt loading and a smaller Pt/C ratio.

Suggested Citation

  • Zhao, Jian & Ozden, Adnan & Shahgaldi, Samaneh & Alaefour, Ibrahim E. & Li, Xianguo & Hamdullahpur, Feridun, 2018. "Effect of Pt loading and catalyst type on the pore structure of porous electrodes in polymer electrolyte membrane (PEM) fuel cells," Energy, Elsevier, vol. 150(C), pages 69-76.
    • Handle: RePEc:eee:energy:v:150:y:2018:i:c:p:69-76
    DOI: 10.1016/j.energy.2018.02.134
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    References listed on IDEAS

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    1. Ozden, Adnan & Shahgaldi, Samaneh & Li, Xianguo & Hamdullahpur, Feridun, 2019. "The impact of ionomer type on the morphological and microstructural degradations of proton exchange membrane fuel cell electrodes under freeze-thaw cycles," Applied Energy, Elsevier, vol. 238(C), pages 1048-1059.
    2. Atyabi, Seyed Ali & Afshari, Ebrahim & Wongwises, Somchai & Yan, Wen-Mon & Hadjadj, Abdellah & Shadloo, Mostafa Safdari, 2019. "Effects of assembly pressure on PEM fuel cell performance by taking into accounts electrical and thermal contact resistances," Energy, Elsevier, vol. 179(C), pages 490-501.
    3. Fan, Ruijia & Chang, Guofeng & Xu, Yiming & Xu, Jiamin, 2023. "Multi-objective optimization of graded catalyst layer to improve performance and current density uniformity of a PEMFC," Energy, Elsevier, vol. 262(PB).
    4. Hou, Yuze & Deng, Hao & Pan, Fengwen & Chen, Wenmiao & Du, Qing & Jiao, Kui, 2019. "Pore-scale investigation of catalyst layer ingredient and structure effect in proton exchange membrane fuel cell," Applied Energy, Elsevier, vol. 253(C), pages 1-1.
    5. Ruzzante, Pascal & Li, Xianguo, 2023. "3D hybrid stochastic reconstruction of catalyst layers in proton exchange membrane fuel cells from 2D images," Energy, Elsevier, vol. 281(C).
    6. Zhao, Jian & Li, Xianguo & Shum, Chris & McPhee, John, 2023. "Control-oriented computational fuel cell dynamics modeling – Model order reduction vs. computational speed," Energy, Elsevier, vol. 266(C).
    7. Ahmed Mohmed Dafalla & Lin Wei & Bereket Tsegai Habte & Jian Guo & Fangming Jiang, 2022. "Membrane Electrode Assembly Degradation Modeling of Proton Exchange Membrane Fuel Cells: A Review," Energies, MDPI, vol. 15(23), pages 1-26, December.
    8. Dong, Pengcheng & Xie, Gongnan & Ni, Meng, 2020. "The mass transfer characteristics and energy improvement with various partially blocked flow channels in a PEM fuel cell," Energy, Elsevier, vol. 206(C).
    9. Li, Hui & Eghbalian, Nasrin, 2021. "Numerical studies of effect of integrated through-plane array flow field on novel PEFC performance using BWO algorithm under uncertainties," Energy, Elsevier, vol. 231(C).
    10. Shahgaldi, Samaneh & Ozden, Adnan & Li, Xianguo & Hamdullahpur, Feridun, 2020. "A scaled-up proton exchange membrane fuel cell with enhanced performance and durability," Applied Energy, Elsevier, vol. 268(C).

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