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学科主题: 物理化学
题名: The enhanced hydrogen storage performance of (Mg-B-N-H)-doped Mg(NH2)-2LiH system
作者: Zhang, Yao2;  Xiong, Zhitao1;  Cao, Hujun1;  Wu, Guotao1;  Chen, Ping1
通讯作者: YaoZhang ;  陈萍
关键词: Hydrogen storage ;  Mg-B-N-H compounds ;  Kinetics ;  Doped Mg(NH2)(2)-2LiH system
刊名: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
发表日期: 2014-01-22
DOI: 10.1016/j.ijhydene.2013.11.008
卷: 39, 期:4, 页:1710-1718
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Electrochemistry ;  Energy & Fuels
研究领域[WOS]: Chemistry ;  Electrochemistry ;  Energy & Fuels
英文摘要: Doping Mg(NH2)(2)-2LiH by Mg-2(BH4)(2)(NH2)(2) compound exhibits enhanced hydrogen de/re-hydrogenation performance. The peak width in temperature-programmed desorption (TPD) profile for the Mg(NH2)(2)-2LiH-0.1Mg(2)(BH4)(2)(NH2)(2) was remarkably shrunk by 60 degrees C from that of pristine Mg(NH2)(2)-2LiH, and the peak temperature was lowered by 12 degrees C from the latter. Its isothermal dehydrogenation rate was greatly improved by five times from the latter at 200 degrees C. XRD, FTIR and NMR analyses revealed that a series of reactions occurred in the dehydrogenation of the composite. The prior interaction between LiH and Mg-B-N-H yielded intermediate LiBH4, which subsequently reacted with Mg(NH2)(2) and LiH in molar ratio of 1:6:9 to form Li2Mg2(NH)(3) and Li4BN3H10 phases. The observed 6Mg(NH2)(2)-9LiH-LiBH4 combination dominated the hydrogen release and soak in the composite system, and enhanced the kinetics of the system. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
关键词[WOS]: N-H SYSTEM ;  CRYSTAL-STRUCTURE ANALYSIS ;  DESORPTION ;  LIH ;  ABSORPTION ;  MG(NH2)(2) ;  HYDRIDES ;  COMPLEX ;  LIBH4
语种: 英语
WOS记录号: WOS:000331420900010
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/144449
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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Complex Hydride Mat Res Grp, Dalian 116023, Peoples R China
2.Southeast Univ, Sch Mat Sci & Engn, Nanjing 211189, Jiangsu, Peoples R China

Recommended Citation:
Zhang, Yao,Xiong, Zhitao,Cao, Hujun,et al. The enhanced hydrogen storage performance of (Mg-B-N-H)-doped Mg(NH2)-2LiH system[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2014,39(4):1710-1718.
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