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Issue 8, 2010
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Hydrogen storage materials protected by a polymer shell

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Abstract

A simple approach for the protection of hydrogen storage materials is based on interfacial polymer precipitation induced by solvent evaporation. Sodium borohydride is successfully protected with a polystyrene shell by co-precipitation. This shell provides a hydrophobic barrier for water diffusion into the container interior. Simultaneous nucleation of sodium borohydride inside the droplets of the disperse phase and formation of a surrounding polystyrene shell during gradual solvent evaporation led to the development of structures consisting of a sodium borohydride core and a polymer shell. Confocal fluorescence microscopy, scanning electron microscopy and transmission electron microscopy reveal the crystalline interior and polymer shell of the fabricated microcontainers. FTIR spectroscopy proves the presence of a sodium borohydride core and a polystyrene shell. The stability of sodium borohydride microcontainers is increased as compared to the unprotected material by 2.5 times during storage at 100% humidity.

Graphical abstract: Hydrogen storage materials protected by a polymer shell

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Publication details

The article was received on 30 Sep 2009, accepted on 11 Nov 2009 and first published on 15 Dec 2009


Article type: Paper
DOI: 10.1039/B920470A
J. Mater. Chem., 2010,20, 1452-1456

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    Hydrogen storage materials protected by a polymer shell

    T. Borodina, D. Grigoriev, H. Möhwald and D. Shchukin, J. Mater. Chem., 2010, 20, 1452
    DOI: 10.1039/B920470A

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