New surface modification of Zr-Ti hydrogen storage alloys

IMR OpenIR

	New surface modification of Zr-Ti hydrogen storage alloys
	Wen, MF ; Chen, L ; Zhai, YC ; Chen, J
通讯作者	Wen, MF()
	2005
发表期刊	RARE METAL MATERIALS AND ENGINEERING
ISSN	1002-185X
卷号	34 期号:1 页码:28-32
摘要	The surfaces of Zr-Ti hydrogen storage alloys are modified with methods such as chemical plating of nickel or cobalt, mechanical mixture, ball grinding and so on. XRD shows that the alloy has the trend to form micro-crystals with the content of coating nickel increasing, and long grinding time leads to dispersion of diffraction peaks of alloys. When the discharge current density is 60mA.g(-1), the initial capacity of the alloy electrode plated Ni 15wt% is 130 mAh.g(-1) more than that of untreated alloy. The alloy is activated absolutely after 6 cycles similar to8 cycles, and the max discharge capacity can reach 400 mAh.g(-1). The discharge capacity of alloy electrode with 5% Co can be up to 390 mAh.g(-1). Anti-discharge ability increases with the percentage of Ni plated. The activation behavior of hydrogen storage alloys is also improved by ball grinding, and the max discharge capacity can reach 450 mAh.g(-1). Mechanical mixture can only increase initial capacity without any improvement of max discharge capacity.
关键词	hydrogen storage alloy modification discharge capacity activation behavior
收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000226733700006
出版者	NORTHWEST INST NONFERROUS METAL RESEARCH
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/83256
专题	中国科学院金属研究所
通讯作者	Wen, MF
作者单位	1.Tsing Hua Univ, Inst Nucl Energy & Technol, Beijing 102201, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110015, Peoples R China 3.Northeastern Univ, Sch Met & Mat, Shenyang 110004, Peoples R China
推荐引用方式 GB/T 7714	Wen, MF,Chen, L,Zhai, YC,et al. New surface modification of Zr-Ti hydrogen storage alloys[J]. RARE METAL MATERIALS AND ENGINEERING,2005,34(1):28-32.
APA	Wen, MF,Chen, L,Zhai, YC,&Chen, J.(2005).New surface modification of Zr-Ti hydrogen storage alloys.RARE METAL MATERIALS AND ENGINEERING,34(1),28-32.
MLA	Wen, MF,et al."New surface modification of Zr-Ti hydrogen storage alloys".RARE METAL MATERIALS AND ENGINEERING 34.1(2005):28-32.