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Type: Journal article
Title: Hierarchical porous Li₂Mg(NH)₂@C nanowires with long cycle life towards stable hydrogen storage
Other Titles: Hierarchical porous Li(2)Mg(NH)(2)@C nanowires with long cycle life towards sStable hydrogen storage
Author: Xia, G.
Tan, Y.
Li, D.
Guo, Z.
Liu, H.
Liu, Z.
Yu, X.
Citation: Scientific Reports, 2014; 4(1):6599-1-6599-7
Publisher: Nature Publishing Group
Issue Date: 2014
ISSN: 2045-2322
Statement of
Guanglin Xia, Yingbin Tan, Dan Li, Zaiping Guo, Huakun Liu, Zongwen Liu and Xuebin Yu
Abstract: The hierarchical porous Li₂Mg(NH)₂@C nanowires full of micropores, mesopores, and macropores are successfully fabricated via a single-nozzle electrospinning technique combined with in-situ reaction between the precursors, i.e., MgCl₂ and LiN₃, under physical restriction upon thermal annealing. The explosive decomposition of LiN₃ well dispersed in the electrospun nanowires during carbothermal treatment induces a highly porous structure, which provides a favourable way for H₂ delivering in and out of Li₂Mg(NH) nanoparticles simultaneously realized by the space-confinement of the porous carbon coating. As a result, the thus-fabricatedLi₂Mg(NH)@C nanowires present significantly enhanced thermodynamics and kinetics towards hydrogen storage performance, e.g., a complete cycle of H2 uptake and release with a capacity close to the theoretical value at a temperature as low as 105°C. This is, to the best of our knowledge, the lowest cycling temperature reported to date. More interestingly, induced by the nanosize effects and space-confinement function of porous carbon coating, a excellently stable regeneration without apparent degradation after 20 de-/re-hydrogenation cycles at a temperature as low as 130°C was achieved for the as-prepared Li₂Mg(NH)₂@C nanowires.
Keywords: Nanopores; nanowires
Rights: This work is licensed under a Creative Commons Attribution-NonCommercial NoDerivs 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the material. To view a copy of this license, visit http://
DOI: 10.1038/srep06599
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