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- Building Information Modeling (5)
- Kühllastberechnung (4)
- Klimaänderung (3)
- Polymer-Elektrolytmembran-Brennstoffzelle (3)
- Qualitätsplan (3)
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- hydraulic compression (2)
- modular stack design (2)
- water electrolysis (2)
- carbon nanofibers, platinum electrodeposition, ele ctrochemical surface area (1)
- AEM-Electrolysis (1)
- Aerosol (1)
- Air handling unit (1)
- Anodenkatalysator (1)
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- Hydraulic compression, Carbon Nano Fibers, PEM Fuel Cells, Catalyst utilization (1)
- Hydrogen evolution reaction (1)
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- Kohlenstoff-Nanoröhre (1)
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- Laser Synthesis Electrocatalytic Water Splitting (1)
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- Membran-Elektroden-Einheit (1)
- Membrane (1)
- Modular Augmented Launcher (1)
- Modular Design (1)
- Multiphase Rail Launcher (1)
- Mund-Nasen-Schutz (1)
- Muzzle Velocity (1)
- Nachhaltigkeit, GEG, intelligente Gebäude (1)
- Ni-Mo alloy Catalyst (1)
- ORR OER (1)
- PEM Electrolysis, Hydrogen, Hydraulic Compression, High Pressure (1)
- PEM electrolysis (1)
- PEM fuel cell (1)
- PEM fuel cell electrocatalysts, Carbon nanofibers, Oxygen plasma activation, Pulsed electroplating. (1)
- PEM fuel cells; electrode preparation; carbon nanofibers; in-situ performance test (1)
- PEM water electrolysis (1)
- PEM-Elektrolyse (1)
- PEM-Elektrolysezellen (1)
- PEMWE (1)
- Plädoyer (1)
- Porous Transport Layers (1)
- Praxis (1)
- PtCoMn (1)
- RLT-Auslegung (1)
- RLT-Geräte (1)
- RLT-Geräte, Klimawandel, Leistungsreserve (1)
- Rail Launcher (1)
- Railgun (1)
- Raumluft (1)
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- Raumlufttechnisches Gerät (1)
- SARS-CoV-2 (1)
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- Stack <Brennstoffzelle> (1)
- Strategiesches Management (1)
- TGA-Büro (1)
- Technische Gebäudeausrüstung (1)
- Ternary alloy catalyst preparation (1)
- Testsystem (1)
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- Thermal Stress (1)
- Titansubstrat (1)
- Upscaling laboratory models (1)
- Urban heat island (1)
- Wasserstoff-Kraftwerke (1)
- Wasserstoffenergietechnik (1)
- Wärmepumpen, VDI 4645, Jahresarbeitszahl, Wärmewende, Bewertungstool (1)
- aerosol (1)
- air hygiene (1)
- airborne infection (1)
- bipolar plate (1)
- carbon nanofibers, platinum electrodeposition, electrocatalysts (1)
- coatings (1)
- corrosion resistance (1)
- face mask (1)
- hydraulic cell compression (1)
- infrared heating panel (1)
- mobile Luftreiniger (1)
- novel (1)
- polymer electrolyte membrane (1)
- ventilation (1)
- Ähnlichkeitstheorie (1)
Institut
- Westfälisches Energieinstitut (106) (entfernen)
Brennstoffzellen gelten in der Forschung als eine der saubersten Technologien zur Stromerzeu-gung. In den Zellen, die meist z.B. so groß sind wie ein Taschenbuch, werden Wasserstoff und Sauerstoff in einer kontrollierten chemischen Reaktion in Wasserdampf umgewandelt. Dabei entstehen elektrische Energie und Wasser. Im Gegensatz zu den meisten anderen Formen der Stromproduktion wird kein Kohlendioxid freigesetzt. Das macht den Wandlungsprozess der Brennstoffzelle sehr umweltfreundlich.
Der Elektroingenieur Prof. Dr. Michael Brodmann von der Westfälischen Hochschule sieht in dieser Technologie die Zukunft mobiler wie stationärer Energieversorgung. Autos mit Elektro-motoren könnten mit Wasserstofftechnik angetrieben, portable Elektrogeräte oder auch ganze Gebäude umweltfreundlich mit Strom versorgt werden. Jedoch ist die Herstellung und Wartung der Brennstoffzellen derzeit sehr teuer, weshalb am Markt Energiewandler auf Basis fossiler Rohstoffe weiterhin dominieren. An diesem Problem arbeitet Brodmann gemeinsam mit Dr. Ulrich Rost. Im Labor des Westfälischen Energieinstituts haben die beiden Forscher eine neue Zelle entwickelt, die effektiver und günstiger ist – und dabei auf ein bewährtes Patent und neue Materialien gesetzt.
Due to high power density and superior efficiency, polymer electrolyte membrane fuel cells (PEMFC) are believed to play a significant role for carbon dioxide emissions free electrical energy systems in the future. Unlike in Carnot processes, chemical energy in the form of hydrogen and oxygen is converted directly into electrical energy without a further process step. One issue in the development of PEMFCs for mobile or stationary applications is the utilization of rare and expensive catalyst material like platinum within the membrane electrode assembly (MEA) see figure 1. In addition, the objective is to reduce production costs and to increase the lifetime of PEMFC. One approach to improve PEMFCs is the development of intelligent electrode architectures. However, cost effective high performance materials are necessary to reach the development targets.
Membrane electrode assemblies (MEA) developed at the Westphalian Energy Institute for polymer electrolyte membrane fuel cells (PEMFC) are high tech systems containing various materials structured in nanoscale, at which electrochemical reactions occur on catalyst nano particle surfaces. For low reactance homogeneous compression of the MEA’s layers is necessary. A novel stack architecture for electrochemical cells, especially PEMFC as well as PEM electrolysers, has been developed according to achieve ideal cell operation conditions. Single cells of such a stack are inserted into flexible slots that are surrounded by hydraulic media. While operation the hydraulic media is pressurised which leads to an even compression and cooling of the stack’s cells. With this stack design it has been possible to construct a test facility for simultaneous characterisation of several MEA samples. As compression and temperature conditions of every single sample are equal, with the novel test system the effect of e.g. different electrode configurations can be investigated. Furthermore, the modular stack design leads to the development of hybrid energy applications combining fuel cells, electrolysers, batteries as well as metal hydride tanks in one system.