Hierarchical porous Li₂Mg(NH)₂@C nanowires with long cycle life towards stable hydrogen storage

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dc.contributor.authorXia, G.
dc.contributor.authorTan, Y.
dc.contributor.authorLi, D.
dc.contributor.authorGuo, Z.
dc.contributor.authorLiu, H.
dc.contributor.authorLiu, Z.
dc.contributor.authorYu, X.
dc.date.issued2014
dc.description.abstractThe 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.
dc.description.statementofresponsibilityGuanglin Xia, Yingbin Tan, Dan Li, Zaiping Guo, Huakun Liu, Zongwen Liu and Xuebin Yu
dc.identifier.citationScientific Reports, 2014; 4(1):6599-1-6599-7
dc.identifier.doi10.1038/srep06599
dc.identifier.issn2045-2322
dc.identifier.issn2045-2322
dc.identifier.orcidGuo, Z. [0000-0003-3464-5301]
dc.identifier.urihttp://hdl.handle.net/2440/130328
dc.language.isoen
dc.publisherNature Publishing Group
dc.relation.granthttp://purl.org/au-research/grants/arc/DP140102858
dc.rightsThis 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:// creativecommons.org/licenses/by-nc-nd/4.0/
dc.source.urihttps://doi.org/10.1038/srep06599
dc.subjectNanopores; nanowires
dc.titleHierarchical porous Li₂Mg(NH)₂@C nanowires with long cycle life towards stable hydrogen storage
dc.title.alternativeHierarchical porous Li(2)Mg(NH)(2)@C nanowires with long cycle life towards sStable hydrogen storage
dc.typeJournal article
pubs.publication-statusPublished

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