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dc.contributor.authorXia, Chuan
dc.contributor.authorZhou, Yungang
dc.contributor.authorVelusamy, Dhinesh
dc.contributor.authorFarah, Abdiaziz A.
dc.contributor.authorLi, Peng
dc.contributor.authorJiang, Qiu
dc.contributor.authorOdeh, Ihab N.
dc.contributor.authorWang, Zhiguo
dc.contributor.authorZhang, Xixiang
dc.contributor.authorAlshareef, Husam N.
dc.date.accessioned2018-03-11T06:54:09Z
dc.date.available2018-03-11T06:54:09Z
dc.date.issued2018-02-05
dc.identifier.citationXia C, Zhou Y, Velusamy DB, Farah AA, Li P, et al. (2018) Anomalous Li Storage Capability in Atomically Thin Two-Dimensional Sheets of Nonlayered MoO2. Nano Letters 18: 1506–1515. Available: http://dx.doi.org/10.1021/acs.nanolett.7b05298.
dc.identifier.issn1530-6984
dc.identifier.issn1530-6992
dc.identifier.pmid29389132
dc.identifier.doi10.1021/acs.nanolett.7b05298
dc.identifier.urihttp://hdl.handle.net/10754/627238
dc.description.abstractSince the first exfoliation and identification of graphene in 2004, research on layered ultrathin two-dimensional (2D) nanomaterials has achieved remarkable progress. Realizing the special importance of 2D geometry, we demonstrate that the controlled synthesis of nonlayered nanomaterials in 2D geometry can yield some unique properties that otherwise cannot be achieved in these nonlayered systems. Herein, we report a systematic study involving theoretical and experimental approaches to evaluate the Li-ion storage capability in 2D atomic sheets of nonlayered molybdenum dioxide (MoO2). We develop a novel monomer-assisted reduction process to produce high quality 2D sheets of nonlayered MoO2. When used as lithium-ion battery (LIB) anodes, these ultrathin 2D-MoO2 electrodes demonstrate extraordinary reversible capacity, as high as 1516 mAh g–1 after 100 cycles at the current rate of 100 mA g–1 and 489 mAh g–1 after 1050 cycles at 1000 mA g–1. It is evident that these ultrathin 2D sheets did not follow the normal intercalation-cum-conversion mechanism when used as LIB anodes, which was observed for their bulk analogue. Our ex situ XPS and XRD studies reveal a Li-storage mechanism in these 2D-MoO2 sheets consisting of an intercalation reaction and the formation of metallic Li phase. In addition, the 2D-MoO2 based microsupercapacitors exhibit high areal capacitance (63.1 mF cm–2 at 0.1 mA cm–2), good rate performance (81% retention from 0.1 to 2 mA cm–2), and superior cycle stability (86% retention after 10,000 cycles). We believe that our work identifies a new pathway to make 2D nanostructures from nonlayered compounds, which results in an extremely enhanced energy storage capability.
dc.description.sponsorshipResearch reported in this publication was supported by King Abdullah University of Science and Technology (KAUST), and by Saudi Basic Industries Corporation (SABIC). The authors like to also thank Professor Bruce Dunn, UCLA, for useful discussions.
dc.publisherAmerican Chemical Society (ACS)
dc.relation.urlhttps://pubs.acs.org/doi/10.1021/acs.nanolett.7b05298
dc.subjectLi-storage
dc.subjectmicrosupercapacitor
dc.subjectMoO2
dc.subjectnonlayered
dc.subjectTwo-dimensional
dc.titleAnomalous Li Storage Capability in Atomically Thin Two-Dimensional Sheets of Nonlayered MoO2
dc.typeArticle
dc.contributor.departmentFunctional Nanomaterials and Devices Research Group
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentSABIC - Corporate Research and Innovation Center (CRI) at KAUST
dc.identifier.journalNano Letters
dc.contributor.institutionSchool of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, People’s Republic of China
dc.contributor.institutionSaudi Basic Industries Corporation (SABIC), Sugar Land, Texas 77478, United States
kaust.personXia, Chuan
kaust.personVelusamy, Dhinesh
kaust.personFarah, Abdiaziz A.
kaust.personLi, Peng
kaust.personJiang, Qiu
kaust.personZhang, Xixiang
kaust.personAlshareef, Husam N.
dc.date.published-online2018-02-05
dc.date.published-print2018-02-14


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