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The effects of the cathode flooding on the transient responses of a PEM fuel cell

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  • Najjari, Mustapha
  • Khemili, Faycel
  • Ben Nasrallah, Sassi

Abstract

This study investigates the effects of the flooding of the gas diffusion layer (GDL), as a result of liquid water accumulation, on the performance of a proton exchange membrane fuel cell (PEMFC). The transient profiles of the current generated by the cell are obtained using the numerical resolution of the transport equation for the oxygen molar concentration in the unsteady state. The dynamics of the system are captured through the reduction of the effective porosity of the GDL by the liquid water which accumulates in the void space of the GDL. The effects of the GDL porosity, GDL thickness and mass transfer at the GDL–gas channel interface on the evolution with time of the averaged current density are reported. The effects of the current collector rib on the evolution of the molar concentration of oxygen are also examined in detail.

Suggested Citation

  • Najjari, Mustapha & Khemili, Faycel & Ben Nasrallah, Sassi, 2008. "The effects of the cathode flooding on the transient responses of a PEM fuel cell," Renewable Energy, Elsevier, vol. 33(8), pages 1824-1831.
    • Handle: RePEc:eee:renene:v:33:y:2008:i:8:p:1824-1831
    DOI: 10.1016/j.renene.2007.10.003
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    References listed on IDEAS

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    1. Roshandel, R. & Farhanieh, B. & Saievar-Iranizad, E., 2005. "The effects of porosity distribution variation on PEM fuel cell performance," Renewable Energy, Elsevier, vol. 30(10), pages 1557-1572.
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    Cited by:

    1. Rakhshanpouri, S. & Rowshanzamir, S., 2013. "Water transport through a PEM (proton exchange membrane) fuel cell in a seven-layer model," Energy, Elsevier, vol. 50(C), pages 220-231.
    2. Zijun Li & Jianguo Wang & Shubo Wang & Weiwei Li & Xiaofeng Xie, 2023. "Liquid Water Transport Characteristics and Droplet Dynamics of Proton Exchange Membrane Fuel Cells with 3D Wave Channel," Energies, MDPI, vol. 16(16), pages 1-19, August.

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