Synthesis and hydrogen storage properties of ultrafine Mg-Zn particles

doi:10.1016/j.ijhydene.2010.12.049

CORC > 化学研究所 > 中国科学院化学研究所

	Synthesis and hydrogen storage properties of ultrafine Mg-Zn particles
	Liu, Tong 1; Zhang, Tongwen 1; Zhang, Xuanzhou 2; Li, Xingguo 2
刊名	INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
	2011-03-01
卷号	36 期号:5 页码:3515-3520
关键词	Hydrogen Storage Mg-zn Ultrafine Particles Hydrogen Plasma-metal Reaction
ISSN号	0360-3199
DOI	10.1016/j.ijhydene.2010.12.049
英文摘要	Mg-6.9 at.% Zn ultrafine particles (UFPs) were prepared by hydrogen plasma-metal reaction (HPMR) method. The electron microscopy study revealed that they were spherical in shape with particle size in the range 100-700 nm. Each fine particle was composed of single crystal structure of alpha-Mg(Zn) solid solution and amorphous structure of Mg-Zn alloy. After one absorption and desorption cycle, these UFPs transformed from the single crystal into the nanocrystalline structure and the mean particle size changed from 400 to 250 nm. It was found that the Mg-Zn UFPs could absorb 5.0 wt.% hydrogen in 20 mm at 573 K and accomplish a high hydrogen storage capacity of 6.1 wt.% at 573 K. The fine particle size, nanocrystalline structure and the low oxide content of the obtained sample promoted the hydrogen sorption process with low hydrogen absorption activation energy of 56.3 kJ/mol. The enhanced hydrogen sorption properties of high absorbing rate and high storage capacity were due to the improved kinetics rather than the change in enthalpy. Copyright (C) 2010, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000288833600028
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/72909]
专题	中国科学院化学研究所
通讯作者	Liu, Tong
作者单位	1.Beihang Univ, Key Lab Aerosp Mat & Performance, Minist Educ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China 2.Peking Univ, BNLMS, State Key Lab Rare Earth Mat Chem & Applicat, Coll Chem & Mol Engn, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Liu, Tong,Zhang, Tongwen,Zhang, Xuanzhou,et al. Synthesis and hydrogen storage properties of ultrafine Mg-Zn particles[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2011,36(5):3515-3520.
APA	Liu, Tong,Zhang, Tongwen,Zhang, Xuanzhou,&Li, Xingguo.(2011).Synthesis and hydrogen storage properties of ultrafine Mg-Zn particles.INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,36(5),3515-3520.
MLA	Liu, Tong,et al."Synthesis and hydrogen storage properties of ultrafine Mg-Zn particles".INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 36.5(2011):3515-3520.