Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/60965
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dc.contributorDepartment of Mechanical Engineeringen_US
dc.creatorLi, Wen_US
dc.creatorCao, Ken_US
dc.creatorWang, Hen_US
dc.creatorLiu, Jen_US
dc.creatorZhou, Len_US
dc.creatorYao, Hen_US
dc.date.accessioned2016-12-19T08:54:12Z-
dc.date.available2016-12-19T08:54:12Z-
dc.identifier.issn2040-3364en_US
dc.identifier.urihttp://hdl.handle.net/10397/60965-
dc.language.isoenen_US
dc.publisherRoyal Society of Chemistryen_US
dc.rightsThis journal is © The Royal Society of Chemistry 2016en_US
dc.rightsThe following publication Li, W., Cao, K., Wang, H., Liu, J., Zhou, L., & Yao, H. (2016). Carbon coating may expedite the fracture of carbon-coated silicon core–shell nanoparticles during lithiation. Nanoscale, 8(9), 5254-5259 is available at https://doi.org/10.1039/c5nr08498aen_US
dc.titleCarbon coating may expedite the fracture of carbon-coated silicon core-shell nanoparticles during lithiationen_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.spage5254en_US
dc.identifier.epage5259en_US
dc.identifier.volume8en_US
dc.identifier.issue9en_US
dc.identifier.doi10.1039/c5nr08498aen_US
dcterms.abstractPrevious studies on silicon (Si) indicate that lithiation-induced fracture of crystalline Si nanoparticles can be greatly inhibited if their diameter is reduced to below a critical scale of around 150 nm. In this paper, in situ lithiation of individual carbon-coated Si nanoparticles (Si@C NPs) is conducted which shows that Si@C NPs will fracture during lithiation even though their diameter is much smaller than 150 nm, implying a deleterious effect of the carbon coating on the integrity of the Si@C NPs during lithiation. To shed light on this effect, finite element analysis is carried out which reveals that the carbon coating, if fractured during lithiation, will induce cracks terminating at the C/Si interface. Such cracks, upon further lithiation, can immediately propagate into the Si core due to the elevated driving force caused by material inhomogeneity between the coating and core. To prevent the fracture of the carbon coating so as to protect the Si core, a design guideline is proposed by controlling the ratio between the diameter of Si core and the thickness of carbon coating. The results in this paper should be of practical value to the design and application of Si-based core-shell structured anode materials for lithium ion batteries.en_US
dcterms.accessRightsopen accessen_US
dcterms.bibliographicCitationNanoscale, 7 Mar. 2016, v. 8, no. 9, p. 5254-5259en_US
dcterms.isPartOfNanoscaleen_US
dcterms.issued2016-03-07-
dc.identifier.isiWOS:000371479000052-
dc.identifier.scopus2-s2.0-84959378145-
dc.identifier.pmid26878967-
dc.identifier.eissn2040-3372en_US
dc.identifier.rosgroupid2015002543-
dc.description.ros2015-2016 > Academic research: refereed > Publication in refereed journalen_US
dc.description.validate202207 bcvcen_US
dc.description.oaAccepted Manuscripten_US
dc.identifier.FolderNumberME-1033-
dc.description.fundingSourceRGCen_US
dc.description.fundingSourceOthersen_US
dc.description.fundingTextNational Natural Science Foundation of Chinaen_US
dc.description.pubStatusPublisheden_US
dc.identifier.OPUS6621778-
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