| People | Locations | Statistics |
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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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Jensen, Jens Oluf
Technical University of Denmark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (25/25 displayed)
- 2022Activity of carbon-encapsulated Ni 12− x Fe x P 5 catalysts for the oxygen evolution reaction:Combination of high activity and stabilitycitations
- 2022Activity of carbon-encapsulated Ni12−xFexP5 catalysts for the oxygen evolution reactioncitations
- 2020Polysulfone-polyvinylpyrrolidone blend membranes as electrolytes in alkaline water electrolysiscitations
- 2020(Invited) Advanced Alkaline Electrolysis Cells for the Production of Sustainable Fuels and Chemicals
- 2020Polybenzimidazole-Based High-Temperature Polymer Electrolyte Membrane Fuel Cells: New Insights and Recent Progresscitations
- 2020Polybenzimidazole-Based High-Temperature Polymer Electrolyte Membrane Fuel Cells: New Insights and Recent Progresscitations
- 2020Process for producing metal alloy nanoparticles
- 2018Long-Term Durability of PBI-Based HT-PEM Fuel Cells: Effect of Operating Parameterscitations
- 2016Amino-Functional Polybenzimidazole Blends with Enhanced Phosphoric Acid Mediated Proton Conductivity as Fuel Cell Electrolytescitations
- 2016Amino-Functional Polybenzimidazole Blends with Enhanced Phosphoric Acid Mediated Proton Conductivity as Fuel Cell Electrolytescitations
- 2016Zero-Gap Alkaline Water Electrolysis Using Ion-Solvating Polymer Electrolyte Membranes at Reduced KOH Concentrationscitations
- 2016Zero-Gap Alkaline Water Electrolysis Using Ion-Solvating Polymer Electrolyte Membranes at Reduced KOH Concentrationscitations
- 2015Lowering the platinum loading of high temperature polymer electrolyte membrane fuel cells with acid doped polybenzimidazole membranescitations
- 2014Hydrogen evolution activity and electrochemical stability of selected transition metal carbides in concentrated phosphoric acidcitations
- 2014Hydrogen evolution activity and electrochemical stability of selected transition metal carbides in concentrated phosphoric acidcitations
- 2014Invited: A Stability Study of Alkali Doped PBI Membranes for Alkaline Electrolyzer Cells
- 2014Polybenzimidazole and sulfonated polyhedral oligosilsesquioxane composite membranes for high temperature polymer electrolyte membrane fuel cellscitations
- 2014High Surface Area Tungsten Carbides: Synthesis, Characterization and Catalytic Activity towards the Hydrogen Evolution Reaction in Phosphoric Acid at Elevated Temperatures
- 2014High Surface Area Tungsten Carbides: Synthesis, Characterization and Catalytic Activity towards the Hydrogen Evolution Reaction in Phosphoric Acid at Elevated Temperatures
- 2013Catalyst Degradation in High Temperature Proton Exchange Membrane Fuel Cells Based on Acid Doped Polybenzimidazole Membranescitations
- 2012Nickel and its alloys as perspective materials for intermediate temperature steam electrolysers operating on proton conducting solid acids as electrolyte
- 2011New Construction and Catalyst Support Materials for Water Electrolysis at Elevated Temperatures
- 2011Oxidative degradation of polybenzimidazole membranes as electrolytes for high temperature proton exchange membrane fuel cellscitations
- 2009Thermal coupling of a high temperature PEM fuel cell with a complex hydride tankcitations
- 2004An in-situ neutron diffraction study of the ageing of CaNi5Dx at 80ºC and 9 bar.
Places of action
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article
Polysulfone-polyvinylpyrrolidone blend membranes as electrolytes in alkaline water electrolysis
Abstract
Development of thin, dense and robust alkaline polymer membranes with high hydroxide ion conductivity is key to advanced alkaline electrolysis as it can enable operation at higher current density and/or efficiency, while improving the dynamic response of the electrolyzer. In this work, a homogeneous blend membrane system based on poly(arylene ether sulfone) (PSU) and poly(vinylpyrrolidone) (PVP) is explored as an alkaline ion-solvating polymer matrix. Increasing PVP content in the blend drastically increases electrolyte uptake, and at PVP contents higher than 45 wt%, the membrane can support ion conductivity in a technologically relevant range of 10–100 mS cm-1 or even higher when equilibrated in 20 wt% aqueous KOH. The membrane system is extensively characterized throughout the full composition range and the down-selected composition composed of 25% PSU and 75% PVP is employed in a single cell lab-scale water electrolyzer, showing excellent performance and stability during the course of one week at 500 mA cm-2 at 60 °C in 20 wt% KOH. Good performance stability was demonstrated for more than 700 h at 80 °C, but the gradually increasing KOH concentration due to evaporative loss of water resulted in membrane degradation.