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Interface Energy Controlled Thermodynamics of Nanoscale Metal Hydrides

Authors

  • Lennard P.A. Mooij,

    1. Department of Chemical Engineering Faculty of Applied Sciences, Delft University of Technology, Julianalaan 136, 2628BL Delft, The Netherlands
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  • Andrea Baldi,

    1. Department of Chemical Engineering Faculty of Applied Sciences, Delft University of Technology, Julianalaan 136, 2628BL Delft, The Netherlands
    2. Condensed Matter Physics Faculty of Sciences, VU University Amsterdam, De Boelelaan 1081, 1081HV Amsterdam, The Netherlands
    Current affiliation:
    1. Department of Materials Science and Engineering, Stanford University, 496 Lomita Mall, Stanford, CA 94305, USA
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  • Christiaan Boelsma,

    1. Condensed Matter Physics Faculty of Sciences, VU University Amsterdam, De Boelelaan 1081, 1081HV Amsterdam, The Netherlands
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  • Kun Shen,

    1. Department of Radiation, Radionuclides and Reactors Faculty of Applied Sciences, Delft University of Technology, Mekelweg 15, 2629JB Delft, The Netherlands
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  • Marnix Wagemaker,

    1. Department of Radiation, Radionuclides and Reactors Faculty of Applied Sciences, Delft University of Technology, Mekelweg 15, 2629JB Delft, The Netherlands
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  • Yevheniy Pivak,

    1. Department of Chemical Engineering Faculty of Applied Sciences, Delft University of Technology, Julianalaan 136, 2628BL Delft, The Netherlands
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  • Herman Schreuders,

    1. Department of Chemical Engineering Faculty of Applied Sciences, Delft University of Technology, Julianalaan 136, 2628BL Delft, The Netherlands
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  • Ronald Griessen,

    1. Condensed Matter Physics Faculty of Sciences, VU University Amsterdam, De Boelelaan 1081, 1081HV Amsterdam, The Netherlands
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  • Bernard Dam

    Corresponding author
    1. Department of Chemical Engineering Faculty of Applied Sciences, Delft University of Technology, Julianalaan 136, 2628BL Delft, The Netherlands
    • Department of Chemical Engineering Faculty of Applied Sciences, Delft University of Technology, Julianalaan 136, 2628BL Delft, The Netherlands.
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Abstract

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Nanoconfined MgH2 is destabilized compared to its bulk counterpart because of an interface energy effect. The hydrogen equilibrium pressure increases by an order of magnitude when decreasing the Mg layer thickness from 10 to 2 nm. This relates to an interface energy change of 0.3 J m−2.

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