18 research outputs found
Posterpräsentation der Promovierenden : Abstract-Band ; Promovierendentag 2023
Get PDFDiese Sammlung enthält die Abstracts der Poster, die im Rahmen des Promovierendentages 2023 von kooperativ promovierenden Doktorandinnen und Doktoranden an der Hochschule für Angewandte Wissenschaften Hamburg (HAW Hamburg) präsentiert werden. Sie geben einen Einblick in spannende, durch wissenschaftliches Niveau und Praxisnähe geprägte Forschungsvorhaben.NonPeerReviewe
The Molecular Identification of Organic Compounds in the Atmosphere: State of the Art and Challenges
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Performance of a vanadium redox flow battery with tubular cell design
Full text link[EN] We present a vanadium redox flow battery with a tubular cell design which shall lead to a reduction of cell manufacturing costs and the realization of cell stacks with reduced shunt current losses. Charge/discharge cycling and polarization curve measurements are performed to characterize the single test cell performance. A maximum current density of 70 mAcm(-2) and power density of 142 Wl(-1) (per cell volume) is achieved and Ohmic overpotential is identified as the dominant portion of the total cell over potential. Cycling displays Coulomb efficiencies of approximate to 95% and energy efficiencies of approximate to 55%. During 113 h of operation a stable Ohmic cell resistance is observed. (C) 2017 Elsevier B.V. All rights reserved.This work was done within the research project tubulAir +/- and was supported by the German Federal Ministry of Education and Research (BMBF FKZ: 03FS0436A). The authors thank Alexander von Stryk (HAW, implementation of test rig), Claudia Weidlich (DECHEMA, tempering graphite felt material), Achim Schmidt (HAW, tubular stacks) and (FUMATECH BWT GmbH, providing membrane material) and are grateful for the fruitful discussions with Wolfgang Winkler, Bernd Hildenbrand and Marcel Quittkat and the encouragement they provided to work on tubular cells.Ressel, S.; Laube, A.; Fischer, S.; Chica, A.; Flower, T.; Struckmann, T. (2017). Performance of a vanadium redox flow battery with tubular cell design. Journal of Power Sources. 355:199-205. https://doi.org/10.1016/j.jpowsour.2017.04.066S19920535
PEM water electrolysis cells with catalyst coating by atomic layer deposition
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Degradation studies of proton exchange membrane water electrolysis cells with low platinum group metals : catalyst coating achieved by atomic layer deposition
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Long-term performance of PEM water electrolysis cells with 3D printed electrodes and low catalyst loading
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Tubular membrane electrode assembly for PEM electrolysis
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StaTuR : redox flow stacks with tubular cell design
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