Study on the structure and electrochemical properties of La1.5Mg0.5Ni7-xCox (x = 0-1.8) hydrogen storage alloys

	Study on the structure and electrochemical properties of La1.5Mg0.5Ni7-xCox (x = 0-1.8) hydrogen storage alloys
	Zhang, Fa-Liang 1; Luo, Yong-Chun 2; Sun, Kai 3; Kang, Long 1; Chen, Jian-Hong1
	2006-02-01
发表期刊	Gongneng Cailiao/Journal of Functional Materials
ISSN	10019731
卷号	37 期号:2 页码:265-269
摘要	La1.5Mg0.5Ni7-xCox (x = 0-1.8) hydrogen storage alloys have been prepared by induction melting followed by an annealing treatment. Structure analyses showed that the main phase of alloys belongs to Ce2Ni7-type structure, Mg atoms are located only at the laves unit of Ce2Ni7-type unit cell, while Co atoms are located only at the CaCu5 unit. As Co content increased, the lattice parameters and cell volume presents an increase trend and the hydrides become more stable. The absorption/desorption plateau of hydrogen ranges from 1.01 × 103-1.01 × 104 Pa, and alloys exhibit a small hysteresis factor. Electrochemical analyses showed that all the alloys have a large discharge capacity (above 390mAh/g) and can be easily activated; The Co element is not beneficial to the development of cyclic stability; The control process of alloy electrode reaction is hydrogen diffusion in bulk of alloy. The La1.5Mg0.5Ni7.0 alloy exhibits better overall electrochemical properties.
关键词	Annealing Cobalt alloys Electrochemistry Kinetic theory Lanthanum alloys Magnesium alloys Nickel alloys Secondary batteries Structure (composition) Cobalt content Cyclic stability Discharge capacity Electrochemical properties Hydrogen storage alloy
收录类别	EI
语种	中文
出版者	Journal of Functional Materials
EI入藏号	2006199868154
EI主题词	Electrodes
EI分类号	931.1 Mechanics - 801.4.1 Electrochemistry - 704.1 Electric Components - 702.1.2 Secondary Batteries - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 548.2 Nickel Alloys - 547.2 Rare Earth Metals - 542.2 Magnesium and Alloys - 537.1 Heat Treatment Processes
来源库	Compendex
分类代码	931.1 Mechanics - 801.4.1 Electrochemistry - 704.1 Electric Components - 702.1.2 Secondary Batteries - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 548.2 Nickel Alloys - 547.2 Rare Earth Metals - 542.2 Magnesium and Alloys - 537.1 Heat Treatment Processes
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/112119
专题	材料科学与工程学院_特聘教授组
作者单位	1.Department of Materials Science and Engineering, Lanzhou University of Science and Technology, Lanzhou 730050, China; 2.State Key Laboratory of Advanced Non-Ferrous Materials, Lanzhou 730050, China; 3.China Institute of Atomic Energy, Beijing 102413, China
推荐引用方式 GB/T 7714	Zhang, Fa-Liang,Luo, Yong-Chun,Sun, Kai,et al. Study on the structure and electrochemical properties of La1.5Mg0.5Ni7-xCox (x = 0-1.8) hydrogen storage alloys[J]. Gongneng Cailiao/Journal of Functional Materials,2006,37(2):265-269.
APA	Zhang, Fa-Liang,Luo, Yong-Chun,Sun, Kai,Kang, Long,&Chen, Jian-Hong.(2006).Study on the structure and electrochemical properties of La1.5Mg0.5Ni7-xCox (x = 0-1.8) hydrogen storage alloys.Gongneng Cailiao/Journal of Functional Materials,37(2),265-269.
MLA	Zhang, Fa-Liang,et al."Study on the structure and electrochemical properties of La1.5Mg0.5Ni7-xCox (x = 0-1.8) hydrogen storage alloys".Gongneng Cailiao/Journal of Functional Materials 37.2(2006):265-269.