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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Holmes, Stuart
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Topics
Publications (12/12 displayed)
- 2023Water cluster characteristics of fuel cell gas diffusion layers with artificial microporous layer crack dilationcitations
- 2022Porous silica nanosheets in PIM-1 membranes for CO 2 separationcitations
- 2022Porous silica nanosheets in PIM-1 membranes for CO2 separationcitations
- 2022Thin film nanocomposite membranes of PIM-1 and graphene oxide/ZIF-8 nanohybrids for organophilic pervaporationcitations
- 2022Thin film nanocomposite membranes of PIM-1 and graphene oxide/ZIF-8 nanohybrids for organophilic pervaporationcitations
- 2021High–performance polymer electrolyte membranes incorporated with 2D silica nanosheets in high–temperature proton exchange membrane fuel cells
- 2018Study on the formation of thin film nanocomposite (TFN) membranes of polymers of intrinsic microporosity and graphene-like fillers: effect of lateral flake size and chemical functionalizationcitations
- 2018Study on the formation of thin film nanocomposite (TFN) membranes of polymers of intrinsic microporosity and graphene-like fillers: effect of lateral flake size and chemical functionalizationcitations
- 2018Flux-enhanced PVDF mixed matrix membranes incorporating APTS-functionalized graphene oxide for membrane distillationcitations
- 2017Mordenite/Nafion and Analcime/Nafion Composite Membranes Prepared by Spray Method for Improved Direct Methanol Fuel Cell Performancecitations
- 2016Surface Modification of Mordenite in Nafion Composite Membrane for Direct Ethanol Fuel Cell and Its Characterizations: Effect of Types of Silane Coupling Agentcitations
- 2013Supercapacitance from cellulose and carbon nanotube nanocomposite fiberscitations
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article
Water cluster characteristics of fuel cell gas diffusion layers with artificial microporous layer crack dilation
Abstract
The formation of discrete water clusters in polymer electrolyte fuel cell gas diffusion layers (GDL) can lead to increased resistance for oxygen transport in the catalyst layer. This study investigates the effect of MPL crack propagation on the water cluster development in a X-ray computed tomography (CT) microstructure using the volume-of-fluid method (VoF). The VoF calculation was compared to operando CT data by voxel matching, obtaining a maximum 88 % accuracy. Using 3D contact angle extraction, the local scale heterogeneous wettability in the GDL was investigated. In a simulation study, MPL cracks were created as the boundary sources for water and the effect of increasing the area fraction covered by cracks on the water distribution in the GDL was investigated. The increased cracking, created larger discrete water clusters in the GDL with greater connectivity, due to in-plane coalescence. The in-plane movement leads to coalescence of clusters, forming fewer, larger clusters at later times close to breakthrough to the channel. This phenomena is shown by the decrease in water cluster density (n mm−2) from 10 to 5. This immobile water impacts the distribution of oxygen at the catalyst layer (10 % local difference) and therefore the current density distribution.