Atomic resolution observation of conversion-type anode RuO 2 during the first electrochemical lithiation

Handle URI:
http://hdl.handle.net/10754/556673
Title:
Atomic resolution observation of conversion-type anode RuO 2 during the first electrochemical lithiation
Authors:
Mao, Minmin; Nie, Anmin; Liu, Jiabin; Wang, Hongtao; Mao, Scott X; Wang, Qingxiao; Li, Kun; Zhang, Xixiang ( 0000-0002-3478-6414 )
Abstract:
Transition 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.
KAUST Department:
Advanced Nanofabrication, Imaging and Characterization Core Lab; Physical Sciences and Engineering (PSE) Division
Citation:
Atomic resolution observation of conversion-type anode RuO 2 during the first electrochemical lithiation 2015, 26 (12):125404 Nanotechnology
Journal:
Nanotechnology
Issue Date:
5-Mar-2015
DOI:
10.1088/0957-4484/26/12/125404
Type:
Article
ISSN:
0957-4484; 1361-6528
Additional Links:
http://stacks.iop.org/0957-4484/26/i=12/a=125404?key=crossref.5241fa960fcba9f4b0b0761536e392fa
Appears in Collections:
Articles; Advanced Nanofabrication, Imaging and Characterization Core Lab; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorMao, Minminen
dc.contributor.authorNie, Anminen
dc.contributor.authorLiu, Jiabinen
dc.contributor.authorWang, Hongtaoen
dc.contributor.authorMao, Scott Xen
dc.contributor.authorWang, Qingxiaoen
dc.contributor.authorLi, Kunen
dc.contributor.authorZhang, Xixiangen
dc.date.accessioned2015-06-10T18:30:59Zen
dc.date.available2015-06-10T18:30:59Zen
dc.date.issued2015-03-05en
dc.identifier.citationAtomic resolution observation of conversion-type anode RuO 2 during the first electrochemical lithiation 2015, 26 (12):125404 Nanotechnologyen
dc.identifier.issn0957-4484en
dc.identifier.issn1361-6528en
dc.identifier.doi10.1088/0957-4484/26/12/125404en
dc.identifier.urihttp://hdl.handle.net/10754/556673en
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.en
dc.relation.urlhttp://stacks.iop.org/0957-4484/26/i=12/a=125404?key=crossref.5241fa960fcba9f4b0b0761536e392faen
dc.rightsArchived with thanks to Nanotechnologyen
dc.titleAtomic resolution observation of conversion-type anode RuO 2 during the first electrochemical lithiationen
dc.typeArticleen
dc.contributor.departmentAdvanced Nanofabrication, Imaging and Characterization Core Laben
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalNanotechnologyen
dc.eprint.versionPost-printen
dc.contributor.institutionState Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of Chinaen
dc.contributor.institutionDepartment of Mechanical Engineering-Engineering Mechanics, Michigan Technological University, 1400 Townsend Drive, Houghton, MI 49931, USAen
dc.contributor.institutionInstitute of Applied Mechanics, Zhejiang University, Hangzhou 310027, People's Republic of Chinaen
dc.contributor.institutionDepartment of Mechanical Engineering and Materials Science, University of Pittsburgh, Pittsburgh, PA 15261, USAen
kaust.authorWang, Qingxiaoen
kaust.authorLi, Kunen
kaust.authorZhang, Xixiangen
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