Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 42, Issue 36, Pages 22933-22941Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2017.07.106
Keywords
Hydrogen storage; Nanoconfinement; Nanoparticles; Mesoporous carbon; MgH2
Categories
Funding
- Australian Research Council [ARC DP0986382]
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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. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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