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Electrochemical pressure impedance spectroscopy for investigation of mass transfer in polymer electrolyte membrane fuel cells

Abstract : Mass transfer phenomena in membrane fuel cells are complex and diversified, because of the presence of complex transport pathways including porous media of very different pore sizes, and possible formation of liquid water. Electrochemical impedance spectroscopy, although allowing valuable information on ohmic, charge and mass transfer phenomena, may nevertheless appear insufficient below 1 Hz. Use of another variable i.e. back pressure as excitation variable for electrochemical pressure impedance spectroscopy is shown here a promising tool for investigations and diagnosis of fuel cells.
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https://hal.univ-lorraine.fr/hal-02929230
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Submitted on : Thursday, September 3, 2020 - 11:53:12 AM
Last modification on : Tuesday, September 8, 2020 - 4:30:40 PM
Long-term archiving on: : Friday, December 4, 2020 - 7:00:55 PM

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A.V. Shirsath, S. Raël, C. Bonnet, L. Schiffer, W. Bessler, et al.. Electrochemical pressure impedance spectroscopy for investigation of mass transfer in polymer electrolyte membrane fuel cells. Current Opinion in Electrochemistry, Elsevier, 2020, 20, pp.82-87. ⟨10.1016/j.coelec.2020.04.017⟩. ⟨hal-02929230⟩

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