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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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Bodner, Merit
Graz University of Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2024In-situ and ex-situ monitoring of membrane degradationin polymer electrolyte fuel cells using advanced analytical techniques
- 2023Induced Hydrogen Crossover Accelerated Stress Test for PEM Water Electrolysis Cells
- 2023Ex-situ measurement of chemical membrane degradation using photometry
- 2023Mechanistic study of fast performance decay of Pt-Cu alloy based catalyst layers for polymer electrolyte fuel cells through electrochemical impedance spectroscopycitations
- 2023Mechanistic study of fast performance decay of PtCu alloy-based catalyst layers for polymer electrolyte fuel cells through electrochemical impedance spectroscopycitations
- 2023Surfactant doped polyaniline coatings for functionalized gas diffusion layers in low temperature fuel cellscitations
- 2023Analysis of PEM Water Electrolyzer Failure Due to Induced Hydrogen Crossover in Catalyst-Coated PFSA Membranescitations
- 2023Modeling of Catalyst Degradation in PEM Fuel Cells Applied to 3D Simulation
- 2023Effects of Catalyst Ink Storage on Polymer Electrolyte Fuel Cellscitations
- 2023Investigation of Gas Diffusion Layer Degradation in Polymer Electrolyte Fuel Cell Via Chemical Oxidationcitations
- 2022Derivate photometry as a method for the determination of fluorine emission rates in polymer electrolyte fuel cells
- 2022Colorimetric method for the determination of fluoride emission rates in polymer electrolyte fuel cells
- 2022Influence of electrode composition and operating conditions on the performance and the electrochemical impedance spectra of polymer electrolyte fuel cells
- 2019Structural Characterization of Membrane-Electrode-Assemblies in High Temperature Polymer Electrolyte Membrane Fuel Cellscitations
- 2017Determining the total fluorine emission rate in polymer electrolyte fuel cell effluent watercitations
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document
Induced Hydrogen Crossover Accelerated Stress Test for PEM Water Electrolysis Cells
Abstract
<br/>Polymer electrolyte membrane water electrolysis (PEMWE) is considered a promising solution for decarbonizing industry and establishing a sustainable hydrogen infrastructure. The central components of a PEMWE cell are represented by the membrane electrode assembly (MEA), comprising a polymer electrolyte membrane (PEM) integrated with catalyst layers (CLs) and porous transport layers (PTLs) for diffusion transport of water- and gases. The Nafion-based PEM is the weakest element of this system, susceptible to both chemical and mechanical degradation. Chemical degradation of the membrane occurs when hydrogen peroxide forms due to the crossover of product gases (H2 and O2) 2.<br/>In this work, membrane failure due to induced hydrogen crossover has been addressed in a membrane-focused accelerated stress test (AST). The AST was conducted on a test cell employing asymmetric H2O and gas supply in open circuit voltage (OCV) mode, at two different temperatures (60 °C and 80 °C). Electrochemical characterization was performed at the beginning- and end of the testing period, revealing a 1.6-fold higher increase in high- frequency resistance (HFR) at 80 °C. The extent of hydrogen crossover was measured using a micro-GC, while the fluoride emission rate (FER) as indicator for membrane degradation was continuously monitored during the ASTs1. A direct correlation between FER and H2 crossover was established, confirming accelerated membrane degradation at higher temperatures.<br/><br/>This research is performed under the HyLife project (K-Project HyTechonomy, FFG grant number 882510) which is supported by the Austrian Research Promotion Agency (FFG).<br/><br/>1. Kuhnert, E., Heidinger, M., Sandu, D., Hacker, V. & Bodner, M. Analysis of PEM Water Electrolyzer Failure Due to Induced Hydrogen Crossover in Catalyst-Coated PFSA Membranes. Membranes 13, 348 (2023).<br/>2. Kuhnert, E., Hacker, V. & Bodner, M. A Review of Accelerated Stress Tests for Enhancing MEA Durability in PEM Water Electrolysis Cells. International Journal of Energy Research 2023, 1–23 (2023).