Effect of substituting Al for Co on the hydrogen-storage performance of La0.7Mg0.3Ni2.6AlxCo0.5-x (x=0.0-0.3) alloys

doi:10.1016/j.ijhydene.2008.08.052

IMR OpenIR

	Effect of substituting Al for Co on the hydrogen-storage performance of La0.7Mg0.3Ni2.6AlxCo0.5-x (x=0.0-0.3) alloys
	Liu, Yixin 1; Xu, Liqin 1; Jiang, Weiqing 1; Li, Guangxu 1; Wei, Wenlou 1; Guo, Jin 1,2
通讯作者	Guo, Jin(guojin@gxu.edu.cn)
	2009-04-01
发表期刊	INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
ISSN	0360-3199
卷号	34 期号:7 页码:2986-2991
摘要	La0.7Mg0.3Ni2.6AlxCo0.5-x (x = 0.0-0.3) alloys were prepared by induction melting, and the effects of partially substituting Al for Co on the structure and hydrogen-storage properties of the alloys were investigated systematically. It is found that La(Ni, Co, Al)(5) phase with hexagonal CaCu5-type structure, LaNi3 phase with PuNi3 Structure and MgNi2 phase exist as the main phases in La0.7Mg0.3Ni2.6AlxCo0.5-x (x = 0.0-0.3) alloys, and the cell volume of the La(Ni, Co, AI)5 phase increases with the amount of Al added. The results show that the substitution of Al for Co can reduce the plateau pressure and the hysteresis between hydrogen absorption and desorption, and improve the hydrogen-absorption capacity and thermal stability of the hydride. Moreover, the addition of Al can delay the oxidation of the surface layer of the alloy electrodes in electrolyte, slow down the capacity degradation and prolong the cycling lifetime, and enhance the electrocatalytic activity of the hydrogen-storage electrodes for hydrogen oxidation. (C) 2009 Published by Elsevier Ltd on behalf of international Association for Hydrogen Energy.
关键词	Hydrogen-storage alloy Hydrogen-storage performance Thermal stability
资助者	National Natural Science Foundation of China ; Natural Science Foundation of Guangxi ; Guangxi University Key Program for Science and Technology Research
DOI	10.1016/j.ijhydene.2008.08.052
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[50561002] ; National Natural Science Foundation of China[50861003] ; Natural Science Foundation of Guangxi[0728028] ; Guangxi University Key Program for Science and Technology Research[2004ZD04]
WOS研究方向	Chemistry ; Electrochemistry ; Energy & Fuels
WOS类目	Chemistry, Physical ; Electrochemistry ; Energy & Fuels
WOS记录号	WOS:000265473900016
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：29[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/321006/95859
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, Minist Nonferrous Met & Mat Proc Technol, Key Lab Natl Educ, 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	Liu, Yixin,Xu, Liqin,Jiang, Weiqing,et al. Effect of substituting Al for Co on the hydrogen-storage performance of La0.7Mg0.3Ni2.6AlxCo0.5-x (x=0.0-0.3) alloys[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2009,34(7):2986-2991.
APA	Liu, Yixin,Xu, Liqin,Jiang, Weiqing,Li, Guangxu,Wei, Wenlou,&Guo, Jin.(2009).Effect of substituting Al for Co on the hydrogen-storage performance of La0.7Mg0.3Ni2.6AlxCo0.5-x (x=0.0-0.3) alloys.INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,34(7),2986-2991.
MLA	Liu, Yixin,et al."Effect of substituting Al for Co on the hydrogen-storage performance of La0.7Mg0.3Ni2.6AlxCo0.5-x (x=0.0-0.3) alloys".INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 34.7(2009):2986-2991.