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Etude de l'impact d'architectures fluidiques innovantes sur la gestion, la performance et la durabilité de systèmes de pile à combustible PEMFC pour les transports

Abstract : Although hydrogen is booming, fuel cell electric vehicles are still rare on the market. Their high volume and complexity are still major hurdles to the development of PEM (Proton Exchange Membrane) systems for transport applications. This PhD. work aimed at studying two new fluidic circuits that can both simplify and reduce the system volume. Namely, the cathodic recirculation, and the Ping-Pong, which is a new fluidic architecture that alternate the fuel feed locations during operation. The performances of both architectures have been studied experimentally in automotive conditions on a 5 kW system. A multiscale analysis was conducted to compare, with other known architectures, the performances of the system, the stack and the homogeneity of the cell voltages inside the stack. The study was completed with a Ping-Pong durability test to evaluate the impact of this new operation on the fuel cell stack. The experimental data have been analyzed at different scales up to the post-mortem expertise of membrane-electrode assemblies.
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Sandrine Rodosik. Etude de l'impact d'architectures fluidiques innovantes sur la gestion, la performance et la durabilité de systèmes de pile à combustible PEMFC pour les transports. Energie électrique. Université Grenoble Alpes, 2019. Français. ⟨NNT : 2019GREAI090⟩. ⟨tel-02493175⟩

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