Synergism induced exceptional capacity and complete reversibility in Mg-Y thin films: enabling next generation metal hydride electrodes

doi:10.1039/c7ee03628k

CORC > 化学研究所 > 中国科学院化学研究所

	Synergism induced exceptional capacity and complete reversibility in Mg-Y thin films: enabling next generation metal hydride electrodes
	Fu, Kai 1,2; Chen, Jun 1; Xiao, Rui 1; Zheng, Jie 1; Tian, Wenhuai 2; Li, Xingguo 1
刊名	ENERGY & ENVIRONMENTAL SCIENCE
	2018-06-01
卷号	11 期号:6 页码:1563-1570
ISSN号	1754-5692
DOI	10.1039/c7ee03628k
英文摘要	Much of the current research into metal hydride (MH) electrodes follows the principle that the materials should be composed of hydrogen-absorbing elements (A) and non-hydrogen-absorbing elements (B). This classical design principle, however, severely limits the potential capacities of the MH electrodes (typically <400 mA h g(-1)). Herein, we demonstrate a fundamentally new strategy to design high capacity MH electrodes without using B elements by inducing synergism in the dehydrogenation process. Mg24Y5 thin films, which are composed of two strong hydrogen-absorbing elements, achieve an exceptional electrochemical hydrogen storage capacity of approximate to 1500 mA h g(-1) (5.6 wt%). All the absorbed hydrogen, including extremely stable H in YH2, can be reversibly desorbed through thermodynamic synergism. The present study provides enlightening insights to design high capacity MH electrodes and therefore enables the revival of Ni-MH batteries, and the emergence of next generation MH-air batteries.
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000435351000018
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/42621]
专题	中国科学院化学研究所
通讯作者	Tian, Wenhuai; Li, Xingguo
作者单位	1.Peking Univ, Beijing Natl Lab Mol Sci, State Key Lab Rare Earth Mat Chem & Applicat, Coll Chem & Mol Engn, Beijing 100871, Peoples R China 2.Univ Sci & Technol Beijing, Dept Mat Phys & Chem, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Fu, Kai,Chen, Jun,Xiao, Rui,et al. Synergism induced exceptional capacity and complete reversibility in Mg-Y thin films: enabling next generation metal hydride electrodes[J]. ENERGY & ENVIRONMENTAL SCIENCE,2018,11(6):1563-1570.
APA	Fu, Kai,Chen, Jun,Xiao, Rui,Zheng, Jie,Tian, Wenhuai,&Li, Xingguo.(2018).Synergism induced exceptional capacity and complete reversibility in Mg-Y thin films: enabling next generation metal hydride electrodes.ENERGY & ENVIRONMENTAL SCIENCE,11(6),1563-1570.
MLA	Fu, Kai,et al."Synergism induced exceptional capacity and complete reversibility in Mg-Y thin films: enabling next generation metal hydride electrodes".ENERGY & ENVIRONMENTAL SCIENCE 11.6(2018):1563-1570.