Effect of carbon/noncarbon addition on hydrogen storage behaviors of magnesium hydride

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	Effect of carbon/noncarbon addition on hydrogen storage behaviors of magnesium hydride
	C. Z. Wu; P. Wang; X. Yao; C. Liu; D. M. Chen; G. Q. Lu; H. M. Cheng
	2006
发表期刊	Journal of Alloys and Compounds
ISSN	0925-8388
卷号	414 期号:1-2 页码:259-264
摘要	Various Mg/carbon and Mg/noncarbon composite systems were prepared by mechanical milling and their hydrogen storage behaviors were investigated. It was found that all the carbon additives exhibited prominent advantage over the noncarbon additives, such as BN nanotubes (BNNTs) or asbestos in improving the hydrogen capacity and dehydriding/hydriding kinetics of Mg. And among the various carbon additives, purified single-walled carbon nanotubes (SWNTs) exhibited the most prominent "catalytic" effect on the hydrogen storage properties of Mg. The hydrogen capacities of all Mg/C composites at 573 K reached more than 6.2 wt.% within 10 min, about 1.5 wt.% higher than that of pure MgH2 at the identical operation conditions. Under certain operation temperatures, H-absorption/desorption rates of Mg/carbon systems were over one order of magnitude higher than that of pure Mg. Furthermore, the starting temperature of the desorption reaction of MgH2 has been lowered to 60 K by adding SWNTs. On the basis of the hydrogen storage behavior and structure/phase investigations, the possible mechanism involved in the property improvement of Mg upon adding carbon materials was discussed. (c) 2005 Elsevier B.V. All rights reserved.
部门归属	chinese acad sci, met res inst, shenyang natl lab mat sci, shenyang 110016, peoples r china. univ queensland, sch engn, arc ctr funct nanomat, brisbane, qld 4074, australia.;cheng, hm (reprint author), chinese acad sci, met res inst, shenyang natl lab mat sci, shenyang 110016, peoples r china;cheng@imr.ac.cn
关键词	Magnesium Hydride Carbon Nanotubes Carbon Mechanical Millings Hydrogen Storage Walled Carbon Nanotubes Graphite Sorption Composites Kinetics Alloys Mgh2
URL	查看原文
WOS记录号	WOS:000236955900045
引用统计	被引频次：183[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/321006/34564
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	C. Z. Wu,P. Wang,X. Yao,et al. Effect of carbon/noncarbon addition on hydrogen storage behaviors of magnesium hydride[J]. Journal of Alloys and Compounds,2006,414(1-2):259-264.
APA	C. Z. Wu.,P. Wang.,X. Yao.,C. Liu.,D. M. Chen.,...&H. M. Cheng.(2006).Effect of carbon/noncarbon addition on hydrogen storage behaviors of magnesium hydride.Journal of Alloys and Compounds,414(1-2),259-264.
MLA	C. Z. Wu,et al."Effect of carbon/noncarbon addition on hydrogen storage behaviors of magnesium hydride".Journal of Alloys and Compounds 414.1-2(2006):259-264.