Carbon scaffold modified by metal (Ni) or non-metal (N) to enhance hydrogen storage of MgH2 through nanoconfinement
Embargoed until: 2019-09-01
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This work focuses on improving the kinetics of de/hydrogenation of nanoconfined MgH2 by using functionalized ordered mesoporous carbon scaffolds (N doped or Ni decorated). The microstructure characterization demonstrates that xNi-CMK-3 (x = 1 and 5 wt%) and N-CMK-3 are suitable as scaffolds to load nano MgH2. Interestingly, the thermal analysis (TPD-MS measurement) and hydrogen absorption/desorption isotherms reveal that Ni-decorating or N-doping into CMK-3 structure can significantly promote both the hydrogen storage capacity and kinetics. This work suggests that the strategy of combining metal/non-metal doping and nano-confinement is promising, which may open a new avenue for enhancing the hydrogen sorption performance of MgH2 under mild operational conditions.
International Journal of Hydrogen Energy
© 2017 Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. icensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence (http://creativecommons.org/licenses/by-nc-nd/4.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, providing that the work is properly cited.
Engineering not elsewhere classified