Concept
Électrode de diffusion de gaz
Publications associées (87)
Quantifying mass transport limitations in a microfluidic CO2 electrolyzer with a gas diffusion cathode
Sophia Haussener, Venu Gopal Agarwal
A gas diffusion electrode (GDE) based CO2 electrolyzer shows enhanced CO2 transport to the catalyst surface, significantly increasing current density compared to traditional planar immersed electrodes. A two-dimensional model for the cathode side of a micr ...
2024Reversible photo-electrochemical device for solar hydrogen and power generation
Sophia Haussener, Saurabh Yuvraj Tembhurne, Alexandre Dominique M. Cattry, Matthieu Jonin, Mahendra Patel
A reversible photo-electrochemical device operating under concentrated irradiation could offer a stand-alone solution for producing solar fuel (in photo-driven electrolysis mode) and power (in fuel cell mode). This strategy would present the advantage of h ...
2024Quantitative measurement and comparison of breakthroughs inside the gas diffusion layer using lattice Boltzmann method and computed tomography scan
Jan Van Herle, Emad Oveisi, Hossein Pourrahmani, Hamza Moussaoui
In Proton Exchange Membrane Fuel Cells (PEMFCs), the presence of residual water within the Gas Diffusion Layer (GDL) poses challenges during cold starts and accelerates degradation. A computational model based on the Lattice Boltzmann Method (LBM) was deve ...
Nature Portfolio2024Pathways to enhance electrochemical CO2 reduction identified through direct pore-level modeling
Sophia Haussener, Etienne Boutin, Evan Fair Johnson, Shuo Liu
Electrochemical conversion of CO2 to fuels and valuable products is one pathway to reduce CO2 emissions. Electrolyzers using gas diffusion electrodes (GDEs) show much higher current densities than aqueous phase electrolyzers, yet models for multi-physical ...
2023Electron imaging of gas diffusion electrodes for proton exchange membrane fuel cells
The current energy crisis demands the development of new sustainable energy sources and devices with low environmental impact, including in the field of electrochemical cells. Mass transport limitations can reduce the overall performance of the device by l ...
EPFL2023Morphology and Transport Characterization of Catalyst Layers for CO2 Reduction
Sophia Haussener, Francesca Lorenzutti
Gas diffusion electrodes (GDEs) help to reduce transport limitations in devices for electrochemical CO2 reduction. Homogenized modeling of such devices requires input of morphological characteristics and effective transport properties of the porous structu ...
2023Raising the temperature on electrodes for anion exchange membrane electrolysis-activity and stability aspects
Jan Van Herle, Peter Hugh Middleton, Thomas Benjamin Ferriday
The membrane electrode assembly is the powerhouse of the anion exchange membrane water electrolyser (AEMWE), thereby placing a great importance on the associated preparation conditions. This paper investigated how annealing temperature and time impacted ac ...
ELSEVIER2023Local electrochemical and thermal investigation of a segmented reversible solid oxide fuel cell and electrolyzer
Jan Van Herle, Stefan Diethelm, Zacharie Wuillemin, Audrey Désirée Wesoly, Hamza Moussaoui
A novel setup has been designed and mounted to investigate the local electrochemical and thermal behavior of a cell from a 4-cell short stack under reversible operation solid oxide fuel cell/solid oxide electrolyzer (SOFC/SOE). It consists in the partition ...
Oxford2023Probing proton diffusion as a guide to environmental stability in powder-engineered FAPbI3 and CsFAPbI3 perovskites
Mohammad Khaja Nazeeruddin, Jianxing Xia
Formamidinium lead iodide-based solar cells show promising device reliability. The grain imperfection can be further suppressed by developing powder methodology. The water uptake capability is critical for the stability of a-formamidinium lead triiodide (F ...
ELSEVIER2023