Electrochemical hydrogen storage in LaNi4.25Al0.75 alloys: A comparative study between film and powder materials

doi:10.1016/j.matchar.2007.04.020

IMR OpenIR

	Electrochemical hydrogen storage in LaNi4.25Al0.75 alloys: A comparative study between film and powder materials
	Wang, Z. M.1; Li, Chi Ying Vanessa 2; Zhou, Huaiying 1; Liu, Shi 3; Chan, S. L. I.2
通讯作者	Wang, Z. M.(zmwang@guet.edu.cn)
	2008-04-01
发表期刊	MATERIALS CHARACTERIZATION
ISSN	1044-5803
卷号	59 期号:4 页码:468-472
摘要	A comparison is made of the electrochemical and structural properties of LaNi4.25Al0.75 alloys in thin film and powder forms. X-ray diffraction (XRD) revealed that both the LaNi4.25Al0.75 thin film and powder materials are crystalline. Atomic force microscopy (AFM) and focused ion beam microscopy (FIB) proved that the film appeared to have a hill-like surface morphology, but was rather dense with a thickness of about 4.2 mu m. Simulated battery tests indicate that both exhibit similar electrochemical behavior, possibly due to their crystal structure, as it requires a primary activation to reach its fully active state. However it took a longer activation period for the film to be activated; an apparent initial decrease of charging voltage with cycle number was observed, as were abnormal discharge processes during activation. After 30 charge/discharge cycles, small needle-shaped aluminium oxide particles were formed on both the powder and film surfaces. (c) 2007 Published by Elsevier Inc.
关键词	LaNi4.25Al0.75 film LaNi4.25Al0.75 powder magnetron sputtering electrochemical hydrogen storage properties
DOI	10.1016/j.matchar.2007.04.020
收录类别	SCI
语种	英语
WOS研究方向	Materials Science
WOS类目	Materials Science, Characterization & Testing
WOS记录号	WOS:000253933600020
出版者	ELSEVIER SCIENCE INC
引用统计	被引频次：10[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/94838
专题	中国科学院金属研究所
通讯作者	Wang, Z. M.
作者单位	1.Guilin Univ Elect Technol, Ctr Mat Sci & Engn, Guilin 541004, Guangxi, Peoples R China 2.Univ New S Wales, Sch Mat Sci & Engn, Sydney, NSW 2052, Australia 3.Chinese Acad Sci, Inst Met Res, Beijing 100864, Peoples R China
推荐引用方式 GB/T 7714	Wang, Z. M.,Li, Chi Ying Vanessa,Zhou, Huaiying,et al. Electrochemical hydrogen storage in LaNi4.25Al0.75 alloys: A comparative study between film and powder materials[J]. MATERIALS CHARACTERIZATION,2008,59(4):468-472.
APA	Wang, Z. M.,Li, Chi Ying Vanessa,Zhou, Huaiying,Liu, Shi,&Chan, S. L. I..(2008).Electrochemical hydrogen storage in LaNi4.25Al0.75 alloys: A comparative study between film and powder materials.MATERIALS CHARACTERIZATION,59(4),468-472.
MLA	Wang, Z. M.,et al."Electrochemical hydrogen storage in LaNi4.25Al0.75 alloys: A comparative study between film and powder materials".MATERIALS CHARACTERIZATION 59.4(2008):468-472.