Anisotropic expansion and size-dependent fracture of silicon nanotubes during lithiation

doi:10.1039/c9ta00519f

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	Anisotropic expansion and size-dependent fracture of silicon nanotubes during lithiation
	Wang C; Wen JC(温济慈); Luo F; Quan BG; Li H; Wei YJ(魏宇杰); Gu CZ; Li JJ
刊名	JOURNAL OF MATERIALS CHEMISTRY A
	2019-07-07
卷号	7 期号:25 页码:15113-15122
ISSN号	2050-7488
DOI	10.1039/c9ta00519f
通讯作者	Wei, Yujie(yujie_wei@lnm.imech.ac.cn) ; Gu, Changzhi(czgu@iphy.ac.cn) ; Li, Junjie(jjli@iphy.ac.cn)
英文摘要	Silicon nanotube anodes are notably promising for high-performance lithium-ion batteries due to their outstanding structural stability, but fundamental understanding about their structural evolution during lithiation still remains unclear. Here, the expansion and fracture behavior of lithiated silicon nanotubes is investigated, and the influences of the crystal phase, crystal orientation, inner radius, wall thickness, and thickness-radius ratio are demonstrated. Experiments and simulations demonstrate anisotropic expansion and outer-surface fractures of crystalline silicon nanotubes and isotropic expansion of amorphous ones. The inner holes of nanotubes undergo much less expansion than the outside. The fracture ratio and the maximum hoop stress are positively correlated with both wall thickness and inner radius for crystalline silicon nanotubes. Their competition gives rise to an optimal thickness-outer radius ratio of about 2/3, and the critical diameter reaches 700 nm correspondingly. This research provides significant insight into the lithiation behavior of silicon nanotubes, which could help to design improved silicon anodes.
分类号	一类
资助项目	National Key R&D Program of China[2016YFA0200800] ; National Key R&D Program of China[2016YFA0200400] ; National Key R&D Program of China[2016YFB0100500] ; National Natural Science Foundation of China[91323304] ; National Natural Science Foundation of China[11674387] ; National Natural Science Foundation of China[11574369] ; National Natural Science Foundation of China[11574368] ; National Natural Science Foundation of China[11574385] ; National Natural Science Foundation of China[52315206] ; National Natural Science Foundation of China[51502334] ; National Natural Science Foundation of China[11425211] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB07020200] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA09010000] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22020200] ; Key Research Program of Frontier Sciences of CAS[QYZDJ-SSW-SLH042]
WOS关键词	LITHIUM-ION BATTERIES ; ELECTROCHEMICAL LITHIATION ; CRYSTALLINE SILICON ; AMORPHOUS-SILICON ; ANODE ; ELECTRODES ; NANOWIRES ; GRAPHENE ; NANOPARTICLES ; ORIENTATION
WOS研究方向	Chemistry ; Energy & Fuels ; Materials Science
语种	英语
WOS记录号	WOS:000473054500057
资助机构	National Key R&D Program of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences of CAS
其他责任者	Wei, Yujie ; Gu, Changzhi ; Li, Junjie
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/79416]
专题	力学研究所_非线性力学国家重点实验室
推荐引用方式 GB/T 7714	Wang C,Wen JC,Luo F,et al. Anisotropic expansion and size-dependent fracture of silicon nanotubes during lithiation[J]. JOURNAL OF MATERIALS CHEMISTRY A,2019,7(25):15113-15122.
APA	Wang C.,温济慈.,Luo F.,Quan BG.,Li H.,...&Li JJ.(2019).Anisotropic expansion and size-dependent fracture of silicon nanotubes during lithiation.JOURNAL OF MATERIALS CHEMISTRY A,7(25),15113-15122.
MLA	Wang C,et al."Anisotropic expansion and size-dependent fracture of silicon nanotubes during lithiation".JOURNAL OF MATERIALS CHEMISTRY A 7.25(2019):15113-15122.