Si-Cu Thin Film Electrode with Kirkendall Voids Structure for Lithium-Ion Batteries

CORC > 物理研究所 > 物理所公开发表论文 > 期刊论文

	Si-Cu Thin Film Electrode with Kirkendall Voids Structure for Lithium-Ion Batteries
	He, Y ; Wang, YH ; Yu, XQ ; Li, H ; Huang, XJ
刊名	JOURNAL OF THE ELECTROCHEMICAL SOCIETY
	2012
卷号	159 期号:12 页码:A2076
关键词	AMORPHOUS-SILICON ROOM-TEMPERATURE ANODES INSERTION COPPER LI
ISSN号	0013-4651
通讯作者	He, Y (reprint author), Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China.
中文摘要	Si-Cu thin film electrodes supported on Ti were fabricated by magnetron sputtering. The electrodes were annealed at 200, 400, and 600 degrees C and characterized by X-ray diffraction, transmission electron microscopy, energy dispersive X-ray spectroscopy, and Raman spectroscopy. The void structure caused by the Kirkendall effect was observed in the electrode after 600 degrees C annealing. Cu3Si was detected after heat-treatment at 600 degrees C. Cycling and rate behavior of the electrodes were enhanced with an increased annealing temperature. However, the initial capacity of the electrodes decreased with an increase in annealing temperature because of the formation of inactive Cu-silicides. The characterization of cycled electrodes indicated that the Kirkendall voids alleviate the volume expansion of Si, and the Cu-silicides formed during the process of annealing act as an inactive matrix, which stabilizes the electrode during. cycling. (C) 2012 The Electrochemical Society. [DOI: 10.1149/2.073212jes] All rights reserved.
收录类别	SCI
资助信息	CAS [KJCX2-YW-W26]; National Natural Science Foundation of China (NSFC) [50730005]
语种	英语
公开日期	2013-09-24
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/52536]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	He, Y,Wang, YH,Yu, XQ,et al. Si-Cu Thin Film Electrode with Kirkendall Voids Structure for Lithium-Ion Batteries[J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY,2012,159(12):A2076.
APA	He, Y,Wang, YH,Yu, XQ,Li, H,&Huang, XJ.(2012).Si-Cu Thin Film Electrode with Kirkendall Voids Structure for Lithium-Ion Batteries.JOURNAL OF THE ELECTROCHEMICAL SOCIETY,159(12),A2076.
MLA	He, Y,et al."Si-Cu Thin Film Electrode with Kirkendall Voids Structure for Lithium-Ion Batteries".JOURNAL OF THE ELECTROCHEMICAL SOCIETY 159.12(2012):A2076.