Auflistung nach Schlagwort "Hydrogen"

Sortiert nach: Sortierung: Ergebnisse:

  • Ammonia, water, and hydrogen: Can nuclear motion be described classically? 
    Frank, Irmgard; Genuit, Stefanie; Matz, Florian; Oschinski, Hedda (Chichester : John Wiley and Sons Ltd, 2020)
    The hypothesis that nuclear motion can be described classically has been tested for several critical systems. We investigate the inversion of ammonia and the heat capacities of water and hydrogen. We use conventional ab ...
  • Analysis and Design of Fuel Cell Systems for Aviation 
    Kadyk, Thomas; Winnefeld, Christopher; Hanke-Rauschenbach, Richard; Krewer, Ulrike (Basel : MDPI AG, 2018)
    In this paper, the design of fuel cells for the main energy supply of passenger transportation aircraft is discussed. Using a physical model of a fuel cell, general design considerations are derived. Considering different ...
  • Communication - Proving the Importance of Pt-Interlayer Position in PEMWE Membranes for the Effective Reduction of the Anodic Hydrogen Content 
    Martin, Agate; Abbas, Dunia; Trinke, Patrick; Böhm, Thomas; Bierling, Markus; Bensmann, Boris; Thiele, Simon; Hanke-Rauschenbach, Richard (Pennington, NJ : Electrochemical Society, 2021)
    Gas crossover through the membrane poses a significant challenge to proton exchange membrane water electrolysers. This work investigates the influence of the position of platinum-based recombination interlayers integrated ...
  • Elucidating the effect of mass transport resistances on hydrogen crossover and cell performance in PEM water electrolyzers by varying the cathode ionomer content 
    Trinke, P.; Keeley, G.P.; Carmo, M.; Bensmann, B.; Hanke-Rauschenbach, R. (Bristol : IOP Publishing Ltd., 2019)
    An important challenge for polymer electrolyte membrane (PEM) water electrolysis is to reduce the permeation of the produced gases. This crossover affects the cell efficiency and causes safety issues. The crossover increases ...
  • Hydrogen Crossover in PEM Water Electrolysis at Current Densities up to 10 A cm−2 
    Martin, Agate; Trinke, Patrick; Bensmann, Boris; Hanke-Rauschenbach, Richard (Bristol : IOP Publishing, 2022)
    Hydrogen crossover poses a critical issue in terms of the safe and efficient operation in polymer electrolyte membrane water electrolysis (PEMWE). The impact of key operating parameters such as temperature and pressure on ...
  • Hydrogenotrophic Methanogenesis by Moderately Acid-Tolerant Methanogens of a Methane-Emitting Acidic Peat 
    Horn, Marcus A.; Matthies, Carola; Küsel, Kirsten; Schramm, Andreas; Drake, Harold L. (Washington, DC [u.a.] : American Soc. for Microbiology, 2003)
    The emission of methane (1.3 mmol of CH4 m-2 day-1), precursors of methanogenesis, and the methanogenic microorganisms of acidic bog peat (pH 4.4) from a moderately reduced forest site were investigated by in situ measurements, ...
  • Laser powder bed fusion of WE43 in hydrogen-argon-gas atmosphere 
    Abel, Arvid; Wessarges, Yvonne; Julmi, Stefan; Hoff, Christian; Hermsdorf, Jörg; Klose, Christian; Maier, Hans Jürgen; Kaierle, Stefan; Overmeyer, Ludger (Amsterdam : Elsevier B.V., 2020)
    Growing demand for individual and especially complex parts with emphasis on biomedical or lightweight applications enhances the importance of laser powder bed fusion. Magnesium alloys offer both biocompatibility and low ...
  • Modelling and designing cryogenic hydrogen tanks for future aircraft applications 
    Winnefeld, Christopher; Kadyk, Thomas; Bensmann, Boris; Krewer, Ulrike; Hanke-Rauschenbach, Richard (Basel : MDPI AG, 2018)
    In the near future, the challenges to reduce the economic and social dependency on fossil fuels must be faced increasingly. A sustainable and efficient energy supply based on renewable energies enables large-scale applications ...
  • On the correlation between the oxygen in hydrogen content and the catalytic activity of cathode catalysts in PEM water electrolysis 
    Martin, Agate; Trinke, Patrick; van Pham, Chuyen; Bühler, Melanie; Bierling, Markus; Holzapfel, Peter K. R.; Bensmann, Boris; Thiele, Simon; Hanke-Rauschenbach, Richard (Pennington, NJ : Electrochemical Society, 2021)
    Altogether five platinum group metal (PGM) and PGM-free cathode catalysts were investigated in full PEM water electrolysis cells regarding their polarisation behaviour and their hydrogen and oxygen recombination properties. ...
  • A study on electrofuels in aviation 
    Goldmann, Andreas; Sauter, Waldemar; Oettinger, Marcel; Kluge, Tim; Schröder, Uwe; Seume, Jörg R.; Friedrichs, Jens; Dinkelacker, Friedrich (Basel : MDPI AG, 2018)
    With the growth of aviation traffic and the demand for emission reduction, alternative fuels like the so-called electrofuels could comprise a sustainable solution. Electrofuels are understood as those that use renewable ...
  • The applicability of the standard DIN EN ISO 3690 for the analysis of diffusible hydrogen content in underwater wet welding 
    Klett, Jan; Wolf, Thomas; Maier, Hans Jürgen; Hassel, Thomas (Basel : MDPI AG, 2020)
    The European standard ISO 3690 regulates the measurement of diffusible hydrogen in arc-welded metal. It was designed for different welding methods performed in dry atmosphere (20% humidity). Some details of the standard ...
  • Visualisation of diesel injector with neutron imaging 
    Lehmann, E.; Grünzweig, C.; Jollet, S.; Kaiser, M.; Hansen, H.; Dinkelacker, Friedrich (Bristol : IOP Publishing Ltd., 2015)
    The injection process of diesel engines influences the pollutant emissions. The spray formation is significantly influenced by the internal flow of the injector. One of the key parameters here is the generation of cavitation ...