Phase Structure and Electrochemical Performances of La0.63Gd0.2Mg0.17Ni3.0-xCo0.3Alx (x=0.0, 0.1, 0.2, 0.3, 0.4) Alloys

doi:10.20964/2019.09.35

	Phase Structure and Electrochemical Performances of La0.63Gd0.2Mg0.17Ni3.0-xCo0.3Alx (x=0.0, 0.1, 0.2, 0.3, 0.4) Alloys
	Gao, Zhijie 1; Luo, Yongchun 2
刊名	INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
	2019-09
卷号	14 期号:9 页码:8382-8392
关键词	La-Mg-Ni-based hydrogen storage alloy Al substitution Microstructure Electrochemical properties
ISSN号	1452-3981
DOI	10.20964/2019.09.35
英文摘要	The influences of Al substitution for Ni on the phase abundance, structures and electrochemical properties of La0.63Gd0.2Mg0.17Ni3.0-xCo0.3Alx (x = 0.0, 0.1, 0.2, 0.3, 0.4) alloys have been investigated. The main phase of Al-free base alloy is Ce2Ni7-type phase, Gd2Co7-type phase and CeNi3-type phase. After a little Al substitution, AB(3) phase shifts to A(2)B(7) phase. Further Al addition promotes the formation of CaCus-type phase over the A(2)B(7)-type phase. The sample of x = 0.1 (AB(3) to A(2)B(7)) increases cycling stability and its discharge capacity almost unchanged. The further addition of Al (A(2)B(7)( )to CaCus) still increases cycling stability, but decreases the maximum discharge capacity and high rate dischargeability. The substitution of Al elements increases the phase abundance of A(2)B(7)-type or CaCus-type so as to improve the cycling stability. The ability of phase pulverization resistance of the metal hydride alloy at the negative electrode appeared to be the intrinsic reason of failure mode of this series of alloys.
资助项目	NSFC (Natural Science Foundation of China)[51404220]
WOS研究方向	Electrochemistry
语种	英语
出版者	ESG
WOS记录号	WOS:000483307100003
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/31604]
专题	材料科学与工程学院
通讯作者	Gao, Zhijie; Luo, Yongchun
作者单位	1.Binzhou Univ, Dept Chem Engn & Safety, Binzhou 256600, Peoples R China 2.Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Gao, Zhijie,Luo, Yongchun. Phase Structure and Electrochemical Performances of La0.63Gd0.2Mg0.17Ni3.0-xCo0.3Alx (x=0.0, 0.1, 0.2, 0.3, 0.4) Alloys[J]. INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE,2019,14(9):8382-8392.
APA	Gao, Zhijie,&Luo, Yongchun.(2019).Phase Structure and Electrochemical Performances of La0.63Gd0.2Mg0.17Ni3.0-xCo0.3Alx (x=0.0, 0.1, 0.2, 0.3, 0.4) Alloys.INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE,14(9),8382-8392.
MLA	Gao, Zhijie,et al."Phase Structure and Electrochemical Performances of La0.63Gd0.2Mg0.17Ni3.0-xCo0.3Alx (x=0.0, 0.1, 0.2, 0.3, 0.4) Alloys".INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE 14.9(2019):8382-8392.