Investigation of crack patterns and cyclic performance of Ti-Si nanocomposite thin film anodes for lithium ion batteries

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	Investigation of crack patterns and cyclic performance of Ti-Si nanocomposite thin film anodes for lithium ion batteries
	Wang, YH ; He, Y ; Xiao, RJ ; Li, H ; Aifantis, KE ; Huang, XJ
刊名	JOURNAL OF POWER SOURCES
	2012
卷号	202 页码:236
关键词	NEGATIVE ELECTRODES ELECTROCHEMICAL CHARACTERISTICS SECONDARY BATTERIES HOLLOW CARBON SILICON INSERTION MICROBATTERIES TRANSITION EXTRACTION CAPACITY
ISSN号	0378-7753
通讯作者	Li, H: Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.
中文摘要	Three different Ti-Si nanocomposite thin films are prepared by the co-sputtering method with Si target and Ti target. The film thickness ranges between 250 and 480 nm. X-ray diffraction (XRD), high resolution transmission electron miscopy (HRTEM) and X-ray photoelectron spectroscopy (XPS) reveal significant charge transfer between Ti and Si and uniform dispersion of Ti-Si alloy nanograins in the amorphous Si thin films. It is found that decreasing the grain size of the TixSiy alloy below 2 nm, can improve the cyclic performance over pure Si thin film electrodes and those containing larger Ti-Si grains. This is mainly related to the improved mechanical properties that result from dispersing small grains of Ti-Si. The throughout thin film cracks formed after 10 electrochemical cycles are finer and more curved compared to the other thin films with the same film thickness. Furthermore, the width of the cracks, as well as, the area and junction angles of the remained fractured particle size of all electrode films considered, is compared and analyzed, after 10 cycles. (C) 2011 Elsevier B.V. All rights reserved.
收录类别	SCI
资助信息	CAS [KJCX2-YW-W26]; NSFC [50730005]; "973" project [2007CB936501]; "863" project [2009AA033101]; European Research Council [211166]
语种	英语
公开日期	2013-09-18
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/40243]
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	Wang, YH,He, Y,Xiao, RJ,et al. Investigation of crack patterns and cyclic performance of Ti-Si nanocomposite thin film anodes for lithium ion batteries[J]. JOURNAL OF POWER SOURCES,2012,202:236.
APA	Wang, YH,He, Y,Xiao, RJ,Li, H,Aifantis, KE,&Huang, XJ.(2012).Investigation of crack patterns and cyclic performance of Ti-Si nanocomposite thin film anodes for lithium ion batteries.JOURNAL OF POWER SOURCES,202,236.
MLA	Wang, YH,et al."Investigation of crack patterns and cyclic performance of Ti-Si nanocomposite thin film anodes for lithium ion batteries".JOURNAL OF POWER SOURCES 202(2012):236.