Phase Structures and Electrochemical Performances of La0.67Mg0.33Ni3.0-xAlx（x=0.0-0.35） Hydrogen Storage Alloys

	Phase Structures and Electrochemical Performances of La0.67Mg0.33Ni3.0-xAlx（x=0.0-0.35） Hydrogen Storage Alloys
	Wang Dahui; Luo Yongchun; Kang Long; Yan Ruxu
	2006
发表期刊	稀有金属材料与工程
ISSN	1002-185X
卷号	35 期号:9 页码:1379-1382
摘要	Phase structures and electrochemical performances of La0.67Mg0.33Ni3.0-xAlx（x=0.0-0.35） alloys were investigated by means of X-ray diffraction （XRD）, electron probe X-Ray microanalysis （EPMA） and electrochemical measurements. XRD patterns and EPMA analysis show that La0.67Mg0.33Ni3.0 alloy is composed of LaNi3 phase and La2Ni7 phase. But La0.67Mg0.33Ni3.0-xAlx （x=0. 1,0.2 and 0.35） alloys do not contain LaNi3 phase. The XRD results indicate that Al substitution for Ni will change phase structure of La0.67Mg0.33Ni3.0 alloy, and Al substitution is not beneficial to form LaNi3 phase in La0.67Mg0.33Ni3.0 alloy. Moreover, phase structures of La0.67Mg0.33Ni3.0-xAlx （x=0.1,0.2 and 0.35） alloys also change with the increase of Al content in the alloys. WDS analysis shows that Al content increase in LaNi5 phase with the increase of x in La0.67Mg0.33Ni3.0-xAlx alloys. But Al content in LaNi2 phase is quite a little and almost keeps constant with the change of x. Electrochemical measurements show that substitution of Ni by Al is effective to enhance the cycle life of La0.67Mg0.33Ni3.0 alloy. However the discharge capacities of La0.67Mg0.33Ni3.0-xAlx alloy electrodes decrease obviously with the Al content x increment in the alloys.
关键词	hydrogen storage alloy Al substitution for Ni X-ray diffraction electrochemical performances
收录类别	CSCD
语种	英语
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	METALLURGY METALLURGICAL ENGINEERING
CSCD记录号	CSCD:2576153
引用统计
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/75937
专题	兰州理工大学
作者单位	State Key Laboratory of Advanced Non-Ferrous Materials, State Key Laboratory of Advanced Non-Ferrous Materials, Lanzhou, Gansu 730050, China
推荐引用方式 GB/T 7714	Wang Dahui,Luo Yongchun,Kang Long,等. Phase Structures and Electrochemical Performances of La0.67Mg0.33Ni3.0-xAlx（x=0.0-0.35） Hydrogen Storage Alloys[J]. 稀有金属材料与工程,2006,35(9):1379-1382.
APA	Wang Dahui,Luo Yongchun,Kang Long,&Yan Ruxu.(2006).Phase Structures and Electrochemical Performances of La0.67Mg0.33Ni3.0-xAlx（x=0.0-0.35） Hydrogen Storage Alloys.稀有金属材料与工程,35(9),1379-1382.
MLA	Wang Dahui,et al."Phase Structures and Electrochemical Performances of La0.67Mg0.33Ni3.0-xAlx（x=0.0-0.35） Hydrogen Storage Alloys".稀有金属材料与工程 35.9(2006):1379-1382.