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Joël PAUCHET

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Published on 4 March 2025
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Joël PAUCHET

Dr. Hab.

Senior Expert​

After studying fluid mechanics for various applications at ALSTOM and CNES, Joël PAUCHET joined the CEA in 2001 where he specialized in PEMFC from 2004. Joël played a key role in understanding coupled transfers in the core of PEMFC: adaptation of the Comsol software to simulate performance, development of the "pore network modeling" approach to study two-phase transfers in porous media, development of local characterization methods during operation... 

Joël has coordinated several projects at the European level with various industrials and research organizations, supervised numerous PhD students, and is the author of several patents and scientific publications in international peer-reviewed journals. 

Joël is always looking to increase performance and durability of PEMFC, notably by improving the 3D structure of its porous components. ​


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Do​​mains​​​​

Hydrogène, molédules et carburants durables 
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Team

  • ​​14 staff
  • 7 postdocs
  • 6 PhD students​​​​​

Research Activities​​​

PEMFCs: 
- Transfers in porous media (diffusion layers, active layers);
- Mechanisms limiting performance;
- Water management (modeling, instrumentation);
- Development of two-phase modeling using the Pore Network Modeling (PNM) method;
- Coupling modeling and experimentation;
- Inter-scale coupling;
- Two-phase cooling. ​​

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Selected publications and conferences:  


  • Characterizing PEM fuel cell catalyst layer properties from high resolution three-dimensional digital images, part I: A numerical procedure for the ionomer distribution reconstruction,, International Journal of Hydrogen Energy, 2024,
     DOI: 10.1016/j.ijhydene.2024.07.097
  • Computation of oxygen diffusion properties of the gas diffusion medium-microporous layer assembly from the combination of X-ray microtomography and focused ion beam three dimensional digital images, Journal of Power Sources, 2023,
     DOI: 10.1016/j.jpowsour.2023.232735
  • A critical review on GDL micro and macroporous layers degradations for improved PEMFC durability, Journal of Power Sources, 2016,
     DOI: 10.1016/j.jpowsour.2016.10.037
  • Validation of pore network simulations of ex-situ water distributions in a gas diffusion layer of proton exchange membrane fuel cells with X-ray tomographic images, Journal of Power Sources, 2016,
     DOI: 10.1016/j.jpowsour.2016.09.076
  • Performance loss of Proton Exchange Membrane Fuel Cell due to hydrophobicity loss in Gas Diffusion Layer: analysis by multiscale approach combining Pore Network and Performance Modeling, International Journal of Hydrogen Energy, 2012,
     DOI: 10.1016/j.ijhydene.2011.09.127

Selected patents: ​

  • 2023 | Dispositif pour déterminer une conductivité ionique et une résistance au transport de dioxygène et de dihydrogène d’un film de polymère conducteur ionique, FR2313416
  • 2020 | Dispositif de mesure de conductivité électrique et/ou résistivité électrique pour couche anisotrope, FR2014028
  • 2017 | Procédé de traitement hydrophobe d'un substrat en carbone, FR3047676 ; extensions US10170769, JP2017141153, EP3206247
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