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dc.contributor.authorMao, Minmin
dc.contributor.authorNie, Anmin
dc.contributor.authorLiu, Jiabin
dc.contributor.authorWang, Hongtao
dc.contributor.authorMao, Scott X
dc.contributor.authorWang, Qingxiao
dc.contributor.authorLi, Kun
dc.contributor.authorZhang, Xixiang
dc.date.accessioned2015-06-10T18:30:59Z
dc.date.available2015-06-10T18:30:59Z
dc.date.issued2015-03-05
dc.identifier.citationAtomic resolution observation of conversion-type anode RuO 2 during the first electrochemical lithiation 2015, 26 (12):125404 Nanotechnology
dc.identifier.issn0957-4484
dc.identifier.issn1361-6528
dc.identifier.doi10.1088/0957-4484/26/12/125404
dc.identifier.urihttp://hdl.handle.net/10754/556673
dc.description.abstractTransition metal oxides have attracted great interest as alternative anode materials for rechargeable lithium-ion batteries. Among them, ruthenium dioxide is considered to be a prototype material that reacts with the Li ions in the conversion type. In situ transmission electron microscopy reveals a two-step process during the initial lithiation of the RuO2 nanowire anode at atomic resolution. The first step is characterized by the formation of the intermediate phase LixRuO2 due to the Li-ion intercalation. The following step is manifested by the solid-state amorphization reaction driven by advancing the reaction front. The crystalline/amorphous interface is consisted of {011} atomic terraces, revealing the orientation-dependent mobility. In the crystalline matrix, lattice disturbance and dislocation are identified to be two major stress-induced distortions. The latter can be effective diffusion channels, facilitating transportation of the Li ions inside the bulk RuO2 crystal and further resulting in non-uniform Li-ion distribution. It is expected that the local enrichment of the Li ions may account for the homogeneous nucleation of dislocations in the bulk RuO2 crystal and the special island-like structures. These results elucidate the structural evolution and the phase transformation during electrochemical cycling, which sheds light on engineering RuO2 anode materials.
dc.publisherIOP Publishing
dc.relation.urlhttp://stacks.iop.org/0957-4484/26/i=12/a=125404?key=crossref.5241fa960fcba9f4b0b0761536e392fa
dc.rightsArchived with thanks to Nanotechnology
dc.titleAtomic resolution observation of conversion-type anode RuO 2 during the first electrochemical lithiation
dc.typeArticle
dc.contributor.departmentAdvanced Nanofabrication, Imaging and Characterization Core Lab
dc.contributor.departmentElectron Microscopy
dc.contributor.departmentImaging and Characterization Core Lab
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalNanotechnology
dc.eprint.versionPost-print
dc.contributor.institutionState Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
dc.contributor.institutionDepartment of Mechanical Engineering-Engineering Mechanics, Michigan Technological University, 1400 Townsend Drive, Houghton, MI 49931, USA
dc.contributor.institutionInstitute of Applied Mechanics, Zhejiang University, Hangzhou 310027, People's Republic of China
dc.contributor.institutionDepartment of Mechanical Engineering and Materials Science, University of Pittsburgh, Pittsburgh, PA 15261, USA
kaust.personWang, Qingxiao
kaust.personLi, Kun
kaust.personZhang, Xixiang
refterms.dateFOA2016-03-05T00:00:00Z
dc.date.published-online2015-03-05
dc.date.published-print2015-03-27


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