Effects of absorption/desorption cycles on hydrogen storage properties of V and V0.9Cr0.1 alloy

IMR OpenIR

	Effects of absorption/desorption cycles on hydrogen storage properties of V and V0.9Cr0.1 alloy
	Deng Xiaoxia ; Cheng Honghui ; Li Shenlan ; Lue Manqi ; Chen Demin ; Yang Ke
通讯作者	Chen Demin(demin.chen.1@imr.ac.cn)
	2007-09-01
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	43 期号:9 页码:977-982
摘要	Through mechanical alloying treatment for V and V0.9Cr0.1 alloy with small amount of LaNi5, the activation properties of the both materials were improved. After more than 100 absorption/desorption cycles followed by thorough desorption, both V and V0.9Cr0.1 still maintained the single bcc structure. During the cycling the absorption plateau pressures of V increased, the absorption capacities decreased under the same hydrogen pressure and the absorption kinetics declined, which could be attributed to the relaxation of the internal strain introduced by ball milling and the contraction of the cell volumes. SEM observation revealed that with increasing cycle, a large amount of deep cracks formed on the surface and in the inner of the samples, which are beneficial to the enhancement of the hydrogen desorption plateau pressures and the improvement of the desorption kinetics. V showed greater degradation rate of effective hydrogen desorption capacity than V0.9Cr0.1 because of more decreases of the lattice strain and bcc cell volumes of V than those of V0.9Cr0.1, which induced more sever decrease of absorption capacity of V after absorption/desorption cycle.
关键词	V V-Cr alloy mechanical alloying hydrogen absorption/desorption property kinetics unit cell volumes lattice strain
收录类别	SCI
语种	英语
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000249876000014
出版者	SCIENCE CHINA PRESS
引用统计	被引频次：3[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/321006/92182
专题	中国科学院金属研究所
通讯作者	Chen Demin
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Deng Xiaoxia,Cheng Honghui,Li Shenlan,et al. Effects of absorption/desorption cycles on hydrogen storage properties of V and V0.9Cr0.1 alloy[J]. ACTA METALLURGICA SINICA,2007,43(9):977-982.
APA	Deng Xiaoxia,Cheng Honghui,Li Shenlan,Lue Manqi,Chen Demin,&Yang Ke.(2007).Effects of absorption/desorption cycles on hydrogen storage properties of V and V0.9Cr0.1 alloy.ACTA METALLURGICA SINICA,43(9),977-982.
MLA	Deng Xiaoxia,et al."Effects of absorption/desorption cycles on hydrogen storage properties of V and V0.9Cr0.1 alloy".ACTA METALLURGICA SINICA 43.9(2007):977-982.