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Enhanced Hydrogen Storage Properties of Li-Mg-N-H System Prepared by Reacting Mg(NH2)(2) with Li3N
Ma, Lai-Peng; Dai, Hong-Bin; Fang, Zhan-Zhao; Kang, Xiang-Dong; Liang, Yan; Wang, Pei-Jun; Wang, Ping; Cheng, Hui-Ming
Corresponding AuthorWang, Ping(pingwang@imr.ac.cn)
2009-06-04
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY C
ISSN1932-7447
Volume113Issue:22Pages:9944-9949
AbstractThe Li-Mg-N-H system was prepared by reacting magnesium amide [Mg(NH2)(2)] with lithium nitride (Li3N) and investigated with regard to the hydrogen storage properties. Our study shows that the present method is superior to the conventional route in enhancing the reversible dehydrogenation properties. Through optimizing the Li3N:Mg(NH2)(2) ratio in the starting materials, the reversible capacity of U-Mg-N-H system increases to 4.9 wt %, 18% higher than that typically obtained from the Mg(NH2)(2) + 2LiH mixture at 200 degrees C. Furthermore, increasing the Li3N:Mg(NH2)(2) ratio is effective for mitigating the ammonia release from thus-prepared samples. Combined property/structure investigations indicate that the obtained enhancements should be ascribed to the effects of LiNH2 and LiH that were in situ generated from the excess Li3N. LiNH2 may promote the dehydrogenation reaction via seeding the reaction intermediate. The concurrently generated LiH acts as an effective ammonia trapping agent. These findings highlight the potential of "intermediate seeding" as a strategy to enhance the reversible hydrogen storage properties of metal-N-H systems.
Funding OrganizationHundred Talents Project of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National High-Tech R&D Program of China
DOI10.1021/jp810494e
Indexed BySCI
Language英语
Funding ProjectHundred Talents Project of Chinese Academy of Sciences ; National Natural Science Foundation of China[50571099] ; National Natural Science Foundation of China[50671107] ; National Natural Science Foundation of China[50771094] ; National High-Tech R&D Program of China[2006AA05ZI04]
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
WOS SubjectChemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS IDWOS:000266447600074
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:23[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/97324
Collection中国科学院金属研究所
Corresponding AuthorWang, Ping
AffiliationChinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Ma, Lai-Peng,Dai, Hong-Bin,Fang, Zhan-Zhao,et al. Enhanced Hydrogen Storage Properties of Li-Mg-N-H System Prepared by Reacting Mg(NH2)(2) with Li3N[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2009,113(22):9944-9949.
APA Ma, Lai-Peng.,Dai, Hong-Bin.,Fang, Zhan-Zhao.,Kang, Xiang-Dong.,Liang, Yan.,...&Cheng, Hui-Ming.(2009).Enhanced Hydrogen Storage Properties of Li-Mg-N-H System Prepared by Reacting Mg(NH2)(2) with Li3N.JOURNAL OF PHYSICAL CHEMISTRY C,113(22),9944-9949.
MLA Ma, Lai-Peng,et al."Enhanced Hydrogen Storage Properties of Li-Mg-N-H System Prepared by Reacting Mg(NH2)(2) with Li3N".JOURNAL OF PHYSICAL CHEMISTRY C 113.22(2009):9944-9949.
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