The effect of substitution Al for Ni on the electrochemical properties of La0.7Mg0.3Ni2.75-xAlxCo0.75 hydrogen storage alloys

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	The effect of substitution Al for Ni on the electrochemical properties of La0.7Mg0.3Ni2.75-xAlxCo0.75 hydrogen storage alloys
	J. Guo; R. Zhang; W. Q. Jiang; G. X. Li; W. L. Wei
	2007
发表期刊	Journal of Alloys and Compounds
ISSN	0925-8388
卷号	429 期号:1-2 页码:348-351
摘要	La0.7Mg0.3Ni2.75-xAlxCo0.75 (x = 0.0-0.4) hydrogen storage alloys were prepared and the effects of partial substitution Al for Ni on the structure, electrochemical properties of the alloys were investigated systematically. In the alloys, Mg2Ni phase appears in all alloys and La (Ni, Co, Al)(5) phase with the hexagonal CaCu5-type structure replaces La(Ni,Co)(5) phase with Al substituting for Ni. The plateau pressure declines gradually and the hysteresis between the hydrogen absorption and desorption decreases with the amount of substitution Al for Ni increasing. The substitution Al for Ni can improve thermal stability for La0.7Mg0.3Ni2.75-xAlxCo0.75 (x = 0.0-0.4) alloy hydrides, slow down the capacity degradation and prolong cycle life for La0.7Mg0.3Ni2.75-xAlCo0.75 (x = 0.0-0.4) alloy electrodes. (c) 2006 Elsevier B.V. All rights reserved.
部门归属	guangxi univ, coll phys sci & technol, nanning 530004, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china.;guo, j (reprint author), guangxi univ, coll phys sci & technol, nanning 530004, peoples r china;guojin@gxu.edu.cn
关键词	Hydrogen Storage Alloy Electrochemical Properties Hydrogen Storage Characteristics
URL	查看原文
WOS记录号	WOS:000244673100060
引用统计	被引频次：18[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/321006/33556
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. Guo,R. Zhang,W. Q. Jiang,et al. The effect of substitution Al for Ni on the electrochemical properties of La0.7Mg0.3Ni2.75-xAlxCo0.75 hydrogen storage alloys[J]. Journal of Alloys and Compounds,2007,429(1-2):348-351.
APA	J. Guo,R. Zhang,W. Q. Jiang,G. X. Li,&W. L. Wei.(2007).The effect of substitution Al for Ni on the electrochemical properties of La0.7Mg0.3Ni2.75-xAlxCo0.75 hydrogen storage alloys.Journal of Alloys and Compounds,429(1-2),348-351.
MLA	J. Guo,et al."The effect of substitution Al for Ni on the electrochemical properties of La0.7Mg0.3Ni2.75-xAlxCo0.75 hydrogen storage alloys".Journal of Alloys and Compounds 429.1-2(2007):348-351.