Influence of annealing treatment on the hydrogen storage properties of La2-xTixMgNi9 (x=0.2, 0.3) alloys

doi:10.1016/j.ijhydene.2010.07.083

IMR OpenIR

	Influence of annealing treatment on the hydrogen storage properties of La2-xTixMgNi9 (x=0.2, 0.3) alloys
	Jiang, Weiqing 1; Lan, Zhiqiang 1; Wei Wenlou 1; Liu Yixin 1; Guo, Jin 1,2
通讯作者	Guo, Jin(guojin@gxu.edu.cn)
	2010-10-01
发表期刊	INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
ISSN	0360-3199
卷号	35 期号:20 页码:11016-11024
摘要	La2-xTixMgNi9 (x = 0.2, 0.3) alloys have been prepared by magnetic levitation melting under an Argon atmosphere, and the as-cast alloys were annealed at 800 degrees C, 900 degrees C for 10 h under vacuum. The effects of annealing on the hydrogen storage properties of the alloys were investigated systematically by XRD, PCT and electrochemical measurements. For the La2-xTixMgNi9 (x = 0.2, 0.3) alloys, LaNi5, LaMg2Ni9 and LaNi3 are the main phases and a Ti2Ni phase appears at 900 degrees C. The effective hydrogen storage capacity increases from 1.10, 1.10 wt.% (as-cast) to 1.22, 1.16 wt.% (annealed 800 degrees C) and 1.31, 1.27 wt.% (annealed 900 degrees C), respectively. The annealing not only improves the hydrogen absorption/desorption kinetics but also increases the maximum discharge capacity and enhances the cycling stability. The La1.8Ti0.2MgNi9 alloy annealed at 900 degrees C exhibits good electrochemical properties, and the discharge capacities decrease from 366.1 mA h/g to 219.6 mA h/g after 177 charge-discharge cycles. (C) 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.
关键词	Hydrogen storage alloy Annealing Hydrogen storage property
资助者	National Natural Science Foundation of China ; Natural Science Foundation of Guangxi ; Foundation of Key Laboratory of National Education Ministry for Nonferrous Metals and Materials Processing Technology ; Foundation of Guangxi Department of Education
DOI	10.1016/j.ijhydene.2010.07.083
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[50861003] ; Natural Science Foundation of Guangxi[2010GXNSFD013004] ; Foundation of Key Laboratory of National Education Ministry for Nonferrous Metals and Materials Processing Technology[GXKFJ09-15] ; Foundation of Guangxi Department of Education[200911MS07]
WOS研究方向	Chemistry ; Electrochemistry ; Energy & Fuels
WOS类目	Chemistry, Physical ; Electrochemistry ; Energy & Fuels
WOS记录号	WOS:000284443200022
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：19[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/321006/101731
专题	中国科学院金属研究所
通讯作者	Guo, Jin
作者单位	1.Guangxi Univ, Coll Phys Sci & Technol, Key Lab, Natl Educ Minist Nonferrous Met & Mat Proc Techno, Nanning 530004, Peoples R China 2.Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Jiang, Weiqing,Lan, Zhiqiang,Wei Wenlou,et al. Influence of annealing treatment on the hydrogen storage properties of La2-xTixMgNi9 (x=0.2, 0.3) alloys[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2010,35(20):11016-11024.
APA	Jiang, Weiqing,Lan, Zhiqiang,Wei Wenlou,Liu Yixin,&Guo, Jin.(2010).Influence of annealing treatment on the hydrogen storage properties of La2-xTixMgNi9 (x=0.2, 0.3) alloys.INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,35(20),11016-11024.
MLA	Jiang, Weiqing,et al."Influence of annealing treatment on the hydrogen storage properties of La2-xTixMgNi9 (x=0.2, 0.3) alloys".INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 35.20(2010):11016-11024.