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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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Wark, Michael
Institute of Physical Chemistry
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (26/26 displayed)
- 2024A sustainable CVD approach for ZrN as a potential catalyst for nitrogen reduction reaction
- 2024Influence of Annealing Temperature on the OER Activity of NiO(111) Nanosheets Prepared via Microwave and Solvothermal Synthesis Approachescitations
- 2024Effect of Non-ionic Surfactant on Fe-N-C Catalyst Layers under HT-PEMFC Conditions
- 2024Benchmark of J55 and X56 steels on cracking and corrosion effects under hydrogen salt cavern boundary conditionscitations
- 2023How Effective Is Graphitization of Biomasses for the Carbon Stability of Pt/C ORR Catalysts?citations
- 2023Sol gel synthesis of defect-pyrochlore structured CsTaWO6 and the tribochemical influences on photocatalytic activity
- 2023Impact of the Water Management on the Performance Stability of Polyimidazolium-based (Aemion+®) Anion Exchange Membrane Fuel Cells
- 2021Chemical Vapor Deposition of Cobalt and Nickel Ferrite Thin Films:Investigation of Structure and Pseudocapacitive Propertiescitations
- 2021In Situ Synthesis of Co 3 O 4 /CoFe 2 O 4 Derived from a Metal–Organic Framework on Nickel Foam: High-Performance Electrocatalyst for Water Oxidationcitations
- 2021Chemical vapor deposition of cobalt and nickel ferrite thin films
- 2021Chemical Vapor Deposition of Cobalt and Nickel Ferrite Thin Films: Investigation of Structure and Pseudocapacitive Propertiescitations
- 2020Correction: Micro-spectroscopy of HKUST-1 metal–organic framework crystals loaded with tetracyanoquinodimethane: effects of water on host–guest chemistry and electrical conductivity
- 2019Micro-spectroscopy of HKUST-1 metal-organic framework crystals loaded with tetracyanoquinodimethane: effects of water on host-guest chemistry and electrical conductivitycitations
- 2019Micro-spectroscopy of HKUST-1 metal-organic framework crystals loaded with tetracyanoquinodimethane: effects of water on host-guest chemistry and electrical conductivity
- 2018Scale-up of the electrodeposition of ZnO/Eosin Y hybrid thin films for the fabrication of flexible dye-sensitized solar cell modulescitations
- 2017Microwave-Assisted Synthesis of Perovskite SrSnO3 Nanocrystals in Ionic Liquids for Photocatalytic Applicationscitations
- 2017Photoelectrochemical and theoretical investigations of spinel type ferrites (MxFe3-xO4) for water splitting: A mini-review
- 2015New insight into calcium tantalate nanocomposite photocatalysts for overall water splitting and reforming of alcohols and biomass derivativescitations
- 2015Research Update: Photoelectrochemical water splitting and photocatalytic hydrogen production using ferrites (MFe2O4) under visible light irradiation
- 2015Low-temperature route to metal titanate perovskite nanoparticles for photocatalytic applicationscitations
- 2015Low-temperature route to metal titanate perovskite nanoparticles for photocatalytic applications
- 2015CNT-TiO(_{2-delta}) composites for improved co-catalyst dispersion and stabilized photocatalytic hydrogen production
- 2013Sol–gel synthesis of defect-pyrochlore structured CsTaWO6 and the tribochemical influences on photocatalytic activitycitations
- 2011Mesoporous tin-doped indium oxide thin films: Effect of mesostructure on electrical conductivity
- 2011Multilayered ordered mesoporous platinum/titania composite films: does the photocatalytic activity benefit from the film thickness?citations
- 2008Development of polyoxadiazole nanocomposites for high temperature polymer electrolyte membrane fuel cellscitations
Places of action
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document
Impact of the Water Management on the Performance Stability of Polyimidazolium-based (Aemion+®) Anion Exchange Membrane Fuel Cells
Abstract
The anion exchange membrane fuel cell (AEMFC) is a potentially low-cost alternative to the proton exchange membrane fuel cell (PEMFC) due to the possible utilisation of less expensive cell and stack components. To compete with PEMFC, the performance needs to be optimised in terms of its long-term stability. For this purpose, it is essential to understand the impact of the more complex water management. In AEMFC, water is not only generated at the anode, but also consumed at the cathode. This can easily lead to drastic water imbalances between both half cells. To avoid electrode flooding or dry out and thus performance losses during operation, a deeper understanding of the parameters influencing the water management is mandatory to bring AEMFCs closer to market maturity. The fuel cells water management can be tuned by either the material properties or the operating conditions. Due to partially contrary effects of the water management on the performance and the stability, a compromise must be found by optimisation of these parameters. This highlights the need to understand the interaction between material and operational parameters to be able to optimise the water management of AEMFCs and therefore maximise its performance and long-term stability.In this work, we study the impact of several parameters influencing the water management and therefore the performance stability of AEMFC. Membrane electrode assemblies (MEA) are based on commercialised Aemion+® membranes and ionomers and PtRu/C and Pt/C catalysts at the anode and cathode, respectively. First, the performance is optimised by varying the relative humidity of the feed gases in connection with different material parameters such as the utilisation of a microporous layer (MPL), the variation of PTFE content and porosity of the gas diffusion layer (GDL). We developed a test protocol to efficiently study the impact of the tuned water management on the performance. Subsequently, the performance stability was evaluated under defined current density operation. Electrochemical impedance spectroscopy (EIS) was utilised to obtain information about possible dehydration of the anion exchange polymer as a possible degradation pathway. Furthermore, analyses such as infrared spectroscopy (IR) and atomic force microscopy (AFM) are used to explore degradation pathways of individual components of the MEA. Thus, performance losses due to inappropriate water management and irreversible degradation can be elucidated. The combination of measurements under AEMFC conditions and comprehensive analytical tools brings a better understanding of the various influences on the degradation mechanisms in order to achieve an optimum of high performance and long-term stability.