Improved electrochemical hydrogen storage properties of Mg-Y thin films as a function of substrate temperature

doi:10.1016/S2095-4956(14)60149-2

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	Improved electrochemical hydrogen storage properties of Mg-Y thin films as a function of substrate temperature
	Wang, Yanyan; Xin, Gongbiao; Wang, Chongyun; Li, Huiyu; Li, Wei; Zheng, Jie; Li, Xingguo
刊名	JOURNAL OF ENERGY CHEMISTRY
	2014-05-01
卷号	23 期号:3 页码:287-290
关键词	Mg-y Thin Films Substrate Temperature Electrochemical Hydrogen Storage Discharge Capacity Cyclic Stability Metal Hydride/nickel Secondary Batteries
ISSN号	2095-4956
DOI	10.1016/S2095-4956(14)60149-2
英文摘要	Pd-capped Mg78Y22 thin films have been prepared by direct current magnetron co-sputtering system at different substrate temperatures and their electrochemical hydrogen storage properties have been investigated. It is found that rising substrate temperature to 60 degrees C can coarsen the surface of thin film, thus facilitating the diffusion of hydrogen atoms and then enhancing its discharge capacity to similar to 1725 mAh.g(-1). Simultaneously, the cyclic stability is effectively improved due to the increased adhesion force between film and substrate as a function of temperature. In addition, the specimen exhibits a very long and flat discharge plateau at about -0.67 V, at which nearly 60% of capacity is maintained. The property is favorable for the application in metal hydride/nickel secondary batteries. The results indicate that rising optimal substrate temperature has a beneficial effect on the electrochemical hydrogen storage of Mg-Y thin films
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000336645200006
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/50637]
专题	中国科学院化学研究所
通讯作者	Li, Xingguo
作者单位	Peking Univ, Coll Chem & Mol Engn, State Key Lab Rare Earth Mat Chem & Applicat, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yanyan,Xin, Gongbiao,Wang, Chongyun,et al. Improved electrochemical hydrogen storage properties of Mg-Y thin films as a function of substrate temperature[J]. JOURNAL OF ENERGY CHEMISTRY,2014,23(3):287-290.
APA	Wang, Yanyan.,Xin, Gongbiao.,Wang, Chongyun.,Li, Huiyu.,Li, Wei.,...&Li, Xingguo.(2014).Improved electrochemical hydrogen storage properties of Mg-Y thin films as a function of substrate temperature.JOURNAL OF ENERGY CHEMISTRY,23(3),287-290.
MLA	Wang, Yanyan,et al."Improved electrochemical hydrogen storage properties of Mg-Y thin films as a function of substrate temperature".JOURNAL OF ENERGY CHEMISTRY 23.3(2014):287-290.