UM
Air-stable hydrogen generation materials and enhanced hydrolysis performance of MgH2-LiNH2 composites
Ma, Miaolian; Ouyang, Liuzhang; Liu, Jiangwen; Wang, Hui; Shao, Huaiyu; Zhu, Min
2017-08-15
Source PublicationJOURNAL OF POWER SOURCES
ISSN0378-7753
Volume359Pages:427-434
AbstractHydrolysis of materials in water can be a promising solution of onsite hydrogen generation for realization of hydrogen economy. In this work, it was the first time that the MgH2-LiNH2 composites were explored as air-stable hydrolysis system for hydrogen generation. The MgH2-LiNH2 composites with different composition ratios were synthesized by ball milling with various durations and the hydrogen generation performances of the composite samples were investigated and compared. X-ray diffraction, X-ray photoelectron spectroscopy and scanning electron microscopy techniques were adopted to elucidate the performance improvement mechanisms. The hydrolysis properties of MgH2 were found to be significantly enhanced by the introduction of LiNH2. The 4MgH(2)-LiNH2 composite ball milled for 5 h can generate 887.2 mL g(-1) hydrogen in 1 min and 1016 mL g(-1) in 50 min, one of the best results so far for Mg based hydrolysis materials. The LiOH.H2O and NH4OH phases of hydrolysis products from LiNH2 may prevent formation of Mg(OH)(2) passivation layer on the surface and supply enough channels for hydrolysis of MgH2. The MgH2-LiNH2 composites appeared to be very stable in air and no obvious negative effect on kinetics and hydrogen generation yield was observed. These good performances demonstrate that the studied MgH2-LiNH2 composites can be a promising and practicable hydrogen generation system. (C) 2017 Elsevier B.V. All rights reserved.
KeywordHydrogen generation MgH2-LiNH2 composites Hydrolysis Air-stable system
DOI10.1016/j.jpowsour.2017.05.087
URLView the original
Indexed BySCI
Language英语
WOS Research AreaChemistry ; Electrochemistry ; Energy & Fuels ; Materials Science
WOS SubjectChemistry, Physical ; Electrochemistry ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS IDWOS:000403548200053
PublisherELSEVIER SCIENCE BV
The Source to ArticleWOS
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Cited Times [WOS]:38   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Recommended Citation
GB/T 7714
Ma, Miaolian,Ouyang, Liuzhang,Liu, Jiangwen,et al. Air-stable hydrogen generation materials and enhanced hydrolysis performance of MgH2-LiNH2 composites[J]. JOURNAL OF POWER SOURCES,2017,359:427-434.
APA Ma, Miaolian,Ouyang, Liuzhang,Liu, Jiangwen,Wang, Hui,Shao, Huaiyu,&Zhu, Min.(2017).Air-stable hydrogen generation materials and enhanced hydrolysis performance of MgH2-LiNH2 composites.JOURNAL OF POWER SOURCES,359,427-434.
MLA Ma, Miaolian,et al."Air-stable hydrogen generation materials and enhanced hydrolysis performance of MgH2-LiNH2 composites".JOURNAL OF POWER SOURCES 359(2017):427-434.
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