Enhanced Hydrogen Storage Properties of Li-Mg-N-H System Prepared by Reacting Mg(NH2)(2) with Li3N

doi:10.1021/jp810494e

IMR OpenIR

	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
通讯作者	Wang, Ping(pingwang@imr.ac.cn)
	2009-06-04
发表期刊	JOURNAL OF PHYSICAL CHEMISTRY C
ISSN	1932-7447
卷号	113 期号:22 页码:9944-9949
摘要	The 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.
资助者	Hundred Talents Project of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National High-Tech R&D Program of China
DOI	10.1021/jp810494e
收录类别	SCI
语种	英语
资助项目	Hundred 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研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science
WOS类目	Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS记录号	WOS:000266447600074
出版者	AMER CHEMICAL SOC
引用统计	被引频次：23[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/97324
专题	中国科学院金属研究所
通讯作者	Wang, Ping
作者单位	Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 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.