Correlation between phase structure and electrochemical properties of Ce2Ni7-type La-RE-Mg-Ni (RE = Nd, Sm, Y) alloys: A comparative study

doi:10.1016/j.jtice.2018.05.013

	Correlation between phase structure and electrochemical properties of Ce2Ni7-type La-RE-Mg-Ni (RE = Nd, Sm, Y) alloys: A comparative study
	Gao, Zhi-Jie 1,2; Zhang, Bo 3; Luo, Yong-Chun 4; Li, Hai-Wen 2
刊名	JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
	2018-08
卷号	89 页码:183-190
关键词	Hydrogen storage alloy Sm substitution cell volume of Ce2Ni7-type phase corrosion resistance Electrochemical properties
ISSN号	1876-1070
DOI	10.1016/j.jtice.2018.05.013
英文摘要	The correlation between phase structure and electrochemical properties of La0.83Mg0.17Ni3.1Co0.3Al0.1 was investigated firstly by partial substitution of La with Sm. It was found that the La0.83-xSmxMg0.17Ni3.1Co0.3Al0.1 alloy consists mainly of the Ce2Ni7-type phase, the abundance of which reaches the maximum (92.23 wt.%) at x = 0.2 when x is changed from 0 to 0.4. The alloy containing more Ce2Ni7-type phase exhibited the better the cyclic and high rate discharge ability examined by electrochemical measurements, i.e. the best electrochemical performance was confirmed at x = 0.2. Furthermore, the influence of unit cell volumes of the Ce2Ni7-type main phase on electrochemical properties was investigated systematically based on the comparison of substitution effect of Sm, Nd and Y for La at x = 0.2. Compared to those of Nd- and Y-substitutions, the Sm-substituted alloy containing Ce2Ni7-type main-phase showed better overall electrochemical properties, especially C-max = 393.3 mAh g(-1) and S-100 = 87.2%. Such superior electrochemical performance may result from appropriate cell volumes and anti-pulverization abilities. (C) 2018 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
WOS研究方向	Engineering
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000438660900019
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/32547]
专题	材料科学与工程学院
作者单位	1.Binzhou Univ, Sch Chem Engn & Safety, Binzhou 256600, Peoples R China; 2.Kyushu Univ, Int Res Ctr Hydrogen Energy, Fukuoka, Fukuoka 8190395, Japan; 3.Chinese Acad Geol Sci, Zhengzhou Inst Multipurpose Utilizat Mineral Reso, Zhengzhou 450006, Henan, Peoples R China; 4.Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Gao, Zhi-Jie,Zhang, Bo,Luo, Yong-Chun,et al. Correlation between phase structure and electrochemical properties of Ce2Ni7-type La-RE-Mg-Ni (RE = Nd, Sm, Y) alloys: A comparative study[J]. JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS,2018,89:183-190.
APA	Gao, Zhi-Jie,Zhang, Bo,Luo, Yong-Chun,&Li, Hai-Wen.(2018).Correlation between phase structure and electrochemical properties of Ce2Ni7-type La-RE-Mg-Ni (RE = Nd, Sm, Y) alloys: A comparative study.JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS,89,183-190.
MLA	Gao, Zhi-Jie,et al."Correlation between phase structure and electrochemical properties of Ce2Ni7-type La-RE-Mg-Ni (RE = Nd, Sm, Y) alloys: A comparative study".JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS 89(2018):183-190.