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Issue 1, 2014
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Beneficial effects of stoichiometry and nanostructure for a LiBH4–MgH2 hydrogen storage system

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Abstract

The hydrogen storage system [MgH2–2LiBH4] shows attractive properties such as favorable thermodynamics, high hydrogen capacity and reversibility. However, there exists an incubation period that amounts up to 10 hours in the dehydrogenation steps, which restricts this system as a practical material. In this study, the influences of stoichiometry and the nanoscale MgH2 were investigated for the system. Considerably shortened incubation times were achieved with deficit amounts of LiBH4 or by using nanoscale MgH2. In addition, the application of nanoscale MgH2 prevented or suppressed the formation of [B12H12]2− in the dehydrogenation, which is otherwise an issue concerning the re-cyclability.

Graphical abstract: Beneficial effects of stoichiometry and nanostructure for a LiBH4–MgH2 hydrogen storage system

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Publication details

The article was received on 20 Sep 2013, accepted on 23 Oct 2013 and first published on 23 Oct 2013


Article type: Paper
DOI: 10.1039/C3TA13775A
Citation: J. Mater. Chem. A, 2014,2, 66-72

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    Beneficial effects of stoichiometry and nanostructure for a LiBH4–MgH2 hydrogen storage system

    J. Hu, R. Witter, H. Shao, M. Felderhoff and M. Fichtner, J. Mater. Chem. A, 2014, 2, 66
    DOI: 10.1039/C3TA13775A

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