Characterization process to measure the electrical contact resistance of Gas Diffusion Layers under mechanical static compressive loads

Résumé : Recent research has identified the mechanical properties of the fuel cell internal components (in particular, the Gas Diffusion Layers - GDLs) as key-parameters to obtain high final performances of the generator. The mechanical compression modulus of these components, the stability of their mechanical properties with respect to temperature and humidity, and their ability to interact with water have an impact on the electrical contact resistances in the stack and, by consequence, on the overall performance of the electric generator. Reducing the losses by contact resistance is an objective necessary to optimize the fuel cells in operation. The study of GDL electrical behavior under various internal operating conditions provides a suitable database to better understand their effects on the overall stack performance. This paper describes an experimental method for measuring the electrical contact resistance versus the static mechanical pressure applied to the GDLs. A nonlinear behavior of the electrical contact resistance versus the mechanical stress is observed. The PTFE and MPL additions modify the electrical contact resistance.
Type de document :
Communication dans un congrès
AEM2016. International conference on Advanced Energy Materials, Sep 2016, University of Surrey, Guildford, France. AEM2016. International conference on Advanced Energy Materials, 17p, 2016
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https://hal.archives-ouvertes.fr/hal-01670694
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Soumis le : jeudi 21 décembre 2017 - 15:38:28
Dernière modification le : jeudi 13 septembre 2018 - 15:24:13

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  • HAL Id : hal-01670694, version 1

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Soufiane El Oualid, Rémy Lachat, Denis Candusso, Yann Meyer. Characterization process to measure the electrical contact resistance of Gas Diffusion Layers under mechanical static compressive loads. AEM2016. International conference on Advanced Energy Materials, Sep 2016, University of Surrey, Guildford, France. AEM2016. International conference on Advanced Energy Materials, 17p, 2016. 〈hal-01670694〉

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