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dc.contributor.authorBaby, Rakhi Raghavan
dc.contributor.authorNagaraju, Doddahalli H.
dc.contributor.authorBeaujuge, Pierre
dc.contributor.authorAlshareef, Husam N.
dc.date.accessioned2016-10-20T11:39:48Z
dc.date.available2016-10-20T11:39:48Z
dc.date.issued2016-10-19
dc.identifier.citationRakhi RB, Nagaraju DH, Beaujuge P, Alshareef HN (2016) Supercapacitors based on two dimensional VO2 nanosheet electrodes in organic gel electrolyte. Electrochimica Acta. Available: http://dx.doi.org/10.1016/j.electacta.2016.10.109.
dc.identifier.issn0013-4686
dc.identifier.doi10.1016/j.electacta.2016.10.109
dc.identifier.urihttp://hdl.handle.net/10754/621084
dc.description.abstractVO2 is a low band-gap semiconductor with relatively high conductivity among transition metal oxides, which makes it an interesting material for supercapacitor electrode applications. The performance of VO2 as supercapacitor electrode in organic electrolytes has never been reported before. Herein, two-dimensional nanosheets of VO2 are prepared by the simultaneous solution reduction and exfoliation from bulk V2O5 powder by hydrothermal method. A specific capacitance of 405 Fg−1 is achieved for VO2 based supercapacitor in an organic electrolyte, in three electrode configuration. The symmetric capacitor based on VO2 nanosheet electrodes and the liquid organic electrolyte exhibits an energy density of 46 Wh kg−1 at a power density of 1.4 kW kg−1 at a constant current density of 1 Ag−1. Furthermore, flexible solid-state supercapacitors are fabricated using same electrode material and Alumina-silica based gel electrolyte. The solid-state device delivers a specific capacitance of 145 Fg−1 and a device capacitance of 36 Fg−1 at a discharge current density of 1 Ag−1. Series combination of three solid state capacitors is capable of lighting up a red LED for more than 1 minute.
dc.description.sponsorshipResearch reported in this publication has been supported by King Abdullah University of Science & Technology (KAUST). Authors thank ‘Advanced nanofabricationNanofabrication, Imaging and Characterization Laboratory and “Analytical Chemistry Core Laboratory” at KAUST. R.B.Rakhi acknowledges the support of Ramanujan Fellowship, Department of Science and Technology (DST), Govt.of India and CSIR-NIIST Thiruvananthapuram, India.
dc.publisherElsevier BV
dc.relation.urlwww.sciencedirect.com/science/article/pii/S0013468616322137
dc.rights© 2016. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectVO2 nanosheets
dc.subjectFlexible
dc.subjectSupercapacitor
dc.subjectEnergy density
dc.subjectSpecific capacitance
dc.titleSupercapacitors based on two dimensional VO2 nanosheet electrodes in organic gel electrolyte
dc.typeArticle
dc.contributor.departmentFunctional Nanomaterials and Devices Research Group
dc.contributor.departmentKAUST Solar Center (KSC)
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalElectrochimica Acta
dc.eprint.versionPost-print
dc.contributor.institutionChemical Sciences and Technology division, CSIR- National Institute of Interdisciplinary Sciences (CSIR-NIIST), Thiruvananthapuram, Kerala, 695019, India
kaust.personBaby, Rakhi Raghavan
kaust.personNagaraju, Doddahalli H.
kaust.personBeaujuge, Pierre
kaust.personAlshareef, Husam N.
dc.date.published-online2016-10-19
dc.date.published-print2016-12


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© 2016. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
Except where otherwise noted, this item's license is described as © 2016. This manuscript version is made available under the CC-BY-NC-ND 4.0 license