Curtin University Homepage
  • Library
  • Help
    • Admin

    espace - Curtin’s institutional repository

    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item

    Fluorine Substitution in Magnesium Hydride as a Tool for Thermodynamic Control

    82295.pdf (1.435Mb)
    Access Status
    Open access
    Authors
    Humphries, Terry
    Yang, J.
    Mole, R.A.
    Paskevicius, Mark
    Bird, Julianne
    Rowles, Matthew
    Tortoza, Mariana
    Sofianos, M. Veronica
    Yu, D.
    Buckley, Craig
    Date
    2020
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Humphries, T.D. and Yang, J. and Mole, R.A. and Paskevicius, M. and Bird, J.E. and Rowles, M.R. and Tortoza, M.S. et al. 2020. Fluorine Substitution in Magnesium Hydride as a Tool for Thermodynamic Control. Journal of Physical Chemistry C. 124 (17): pp. 9109-9117.
    Source Title
    Journal of Physical Chemistry C
    DOI
    10.1021/acs.jpcc.9b11211
    ISSN
    1932-7447
    Faculty
    Faculty of Science and Engineering
    School
    John de Laeter Centre (JdLC)
    School of Electrical Engineering, Computing and Mathematical Sciences (EECMS)
    Funding and Sponsorship
    http://purl.org/au-research/grants/arc/DP150101708
    http://purl.org/au-research/grants/arc/FT160100303
    http://purl.org/au-research/grants/arc/LP120101848
    http://purl.org/au-research/grants/arc/LP150100730
    Remarks

    This document is the Accepted Manuscript version of a Published Work that appeared in final form in Journal of Physical Chemistry C, copyright © American Chemical Society, after peer review and technical editing by the publisher. To access the final edited and published work see 10.1021/acs.jpcc.9b11211.

    URI
    http://hdl.handle.net/20.500.11937/82253
    Collection
    • Curtin Research Publications
    Abstract

    © 2020 American Chemical Society.

    Metal hydrides continue to vie for attention as materials in multiple technological applications including hydrogen storage media, thermal energy storage (TES) materials, and hydrogen compressors. These applications depend on the temperature at which the materials desorb and reabsorb hydrogen. Magnesium hydride is ideal as a TES material, although its practical operating temperature is capped at ∼450 °C because of material degradation and high operating pressure. Fluorine substitution for hydrogen in magnesium hydride has previously been shown to increase the operating temperature of the metal hydride while limiting degradation, although full characterization is required before technological application can be ensured. The present study characterizes Mg(HxF1-x)2 solid solutions (x = 1, 0.95, 0.70, 0.85, 0.50, and 0) by inelastic neutron spectroscopy, powder X-ray diffraction, and thermal conductivity measurements, with the results being verified by density functional theory. For each experiment, a clear trend is observed throughout a series of solid solutions, showing the possibility of tuning the properties of MgH2. As F- substitution increases, the average Mg-H(F) bond distance elongates along the axial positions of the Mg-H(F) octahedra. Overall, this leads to an increase in Mg-H bond strength and thermal stability, improving the viability of Mg-H-F as potential TES materials.

    Related items

    Showing items related by title, author, creator and subject.

    • Application of hydrides in hydrogen storage and compression: Achievements, outlook and perspectives
      Bellosta von Colbe, J.; Ares, J.R.; Barale, J.; Baricco, M.; Buckley, Craig ; Capurso, G.; Gallandat, N.; Grant, D.M.; Guzik, M.N.; Jacob, I.; Jensen, E.H.; Jensen, T.; Jepsen, J.; Klassen, T.; Lototskyy, M.V.; Manickam, K.; Montone, A.; Puszkiel, J.; Sartori, S.; Sheppard, Drew ; Stuart, A.; Walker, G.; Webb, C.J.; Yang, H.; Yartys, V.; Züttel, A.; Dornheim, M. (2019)
      Metal hydrides are known as a potential efficient, low-risk option for high-density hydrogen storage since the late 1970s. In this paper, the present status and the future perspectives of the use of metal hydrides for ...
    • An experimental high temperature thermal battery coupled to a low temperature metal hydride for solar thermal energy storage
      Poupin, Lucas ; Humphries, Terry ; Paskevicius, Mark ; Buckley, Craig (2019)
      © 2019 The Royal Society of Chemistry. Metal hydrides have demonstrated ideal physical properties to be the next generation of thermal batteries for solar thermal power plants. Previous studies have demonstrated that ...
    • Hydrogen storage studies of mesoporous and titanium based materials
      Sheppard, Drew A (2008)
      Concerns over green house gas emissions and their climate change effects have lead to a concerted effort into environmental friendly technologies. One such emphasis has been on the implementation of the hydrogen economy. ...
    Advanced search

    Browse

    Communities & CollectionsIssue DateAuthorTitleSubjectDocument TypeThis CollectionIssue DateAuthorTitleSubjectDocument Type

    My Account

    Admin

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Follow Curtin

    • 
    • 
    • 
    • 
    • 

    CRICOS Provider Code: 00301JABN: 99 143 842 569TEQSA: PRV12158

    Copyright | Disclaimer | Privacy statement | Accessibility

    Curtin would like to pay respect to the Aboriginal and Torres Strait Islander members of our community by acknowledging the traditional owners of the land on which the Perth campus is located, the Whadjuk people of the Nyungar Nation; and on our Kalgoorlie campus, the Wongutha people of the North-Eastern Goldfields.