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  • Hydrogen storage properties of MgH2/SWNT composite prepared by ball milling

    Author(s)
    Wu, CZ
    Wang, P
    Yao, X
    Liu, C
    Chen, DM
    Lu, GQ
    Cheng, HM
    Griffith University Author(s)
    Yao, Xiangdong
    Year published
    2006
    Metadata
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    Abstract
    A systematic investigation was performed on the hydrogen storage properties of mechano-chemically prepared MgH2/Single-walled carbon nanotube (SWNT) composites. It is found that the hydrogen absorption capacity and hydriding kinetics of the composites were dependent on the addition amount of SWNTs as well as milling time. A 5 wt.% addition of SVVNTs is optimum to facilitate the hydrogen absorption and desorption of MgH2. The composite MgH2/5 wt.% SWNTs milled for 10h can absorb 6.7 wt.% hydrogen within about 2 min at 573 K, and desorb 6 wt.% hydrogen in about 5 min at 623 K. Prolonging the milling time over 10 h leads to a ...
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    A systematic investigation was performed on the hydrogen storage properties of mechano-chemically prepared MgH2/Single-walled carbon nanotube (SWNT) composites. It is found that the hydrogen absorption capacity and hydriding kinetics of the composites were dependent on the addition amount of SWNTs as well as milling time. A 5 wt.% addition of SVVNTs is optimum to facilitate the hydrogen absorption and desorption of MgH2. The composite MgH2/5 wt.% SWNTs milled for 10h can absorb 6.7 wt.% hydrogen within about 2 min at 573 K, and desorb 6 wt.% hydrogen in about 5 min at 623 K. Prolonging the milling time over 10 h leads to a serious degradation on hydrogen storage property of the MgH2/SWNT composite, and property/structure investigations suggest that the property degradation comes from the structure destruction of the SWNTs. (c) 2005 Elsevier B.V. All rights reserved.
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    Journal Title
    Journal of Alloys and Compounds
    Volume
    420
    Issue
    1-2
    DOI
    https://doi.org/10.1016/j.jallcom.2005.10.028
    Subject
    Condensed matter physics
    Solid state chemistry
    Physical properties of materials
    Materials engineering
    Resources engineering and extractive metallurgy
    Publication URI
    http://hdl.handle.net/10072/58204
    Collection
    • Journal articles

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