IMECH-IR  > 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
Corresponding AuthorWei, Yujie(yujie_wei@lnm.imech.ac.cn) ; Gu, Changzhi(czgu@iphy.ac.cn) ; Li, Junjie(jjli@iphy.ac.cn)
Source PublicationJOURNAL OF MATERIALS CHEMISTRY A
2019-07-07
Volume7Issue:25Pages:15113-15122
ISSN2050-7488
AbstractSilicon 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.
DOI10.1039/c9ta00519f
Indexed BySCI ; EI
Language英语
WOS IDWOS:000473054500057
WOS KeywordLITHIUM-ION BATTERIES ; ELECTROCHEMICAL LITHIATION ; CRYSTALLINE SILICON ; AMORPHOUS-SILICON ; ANODE ; ELECTRODES ; NANOWIRES ; GRAPHENE ; NANOPARTICLES ; ORIENTATION
WOS Research AreaChemistry ; Energy & Fuels ; Materials Science
WOS SubjectChemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
Funding ProjectNational 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]
Funding OrganizationNational 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
Classification一类
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/79417
Collection非线性力学国家重点实验室
Recommended Citation
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.
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