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High-performance sodium-ion hybrid supercapacitor based on Nb2O5@Carbon core-shell nanoparticles and reduced graphene oxide nanocomposites

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dc.contributor.authorLim, Eunho-
dc.contributor.authorJo, Changshin-
dc.contributor.authorKim, Min Su-
dc.contributor.authorKim, Mok-Hwa-
dc.contributor.authorChun, Jinyoung-
dc.contributor.authorKim, Haegyeom-
dc.contributor.authorPark, Jongnam-
dc.contributor.authorRoh, Kwang Chul-
dc.contributor.authorKang, Kisuk-
dc.contributor.authorYoon, Songhun-
dc.contributor.authorLee, Jinwoo-
dc.date.accessioned2020-04-25T07:56:06Z-
dc.date.available2020-04-25T07:56:06Z-
dc.date.issued2016-06-
dc.identifier.citationAdvanced Functional Materials, Vol.26 No.21, pp.3711-3719-
dc.identifier.issn1616-301X-
dc.identifier.other49367-
dc.identifier.urihttps://hdl.handle.net/10371/165032-
dc.description.abstractSodium-ion hybrid supercapacitors (Na-HSCs) have potential for mid- to large-scale energy storage applications because of their high energy/power densities, long cycle life, and the low cost of sodium. However, one of the obstacles to developing Na-HSCs is the imbalance of kinetics from different charge storage mechanisms between the sluggish faradaic anode and therapid non-faradaic capacitive cathode. Thus, to develop high-power Na-HSC anode materials, this paper presents the facile synthesis of nanocomposites comprising Nb2O5@Carbon core-shell nanoparticles (Nb2O5@C NPs) and reduced graphene oxide (rGO), and an analysis of their electrochemical performance with respect to various weight ratios of Nb2O5@C NPs to rGO (e.g.,Nb2O5@C, Nb2O5@C/rGO-70, -50, and -30). In a Na half-cell configuration, the Nb2O5@C/rGO-50 shows highly reversible capacity of approximate to 285 mA h g(-1) at 0.025 A g(-1) in the potential range of 0.01-3.0 V (vs Na/Na+). In addition, the Na-HSC using the Nb2O5@C/rGO-50 anode and activated carbon (MSP-20) cathode delivers high energy/power densities (approximate to 76 W h kg(-1) and approximate to 20 800 W kg(-1)) with a stable cycle life in the potential range of 1.0-4.3 V. The energy and power densities of the Na-HSC developed in this study are higher than those of similar Li- and Na-HSCs previously reported.-
dc.subjectcore–shell nanoparticles-
dc.subjectNb2O5-
dc.subjectreduced graphene oxide-
dc.subjectsodium-ion hybrid supercapacitors-
dc.subjectultracapacitors-
dc.titleHigh-performance sodium-ion hybrid supercapacitor based on Nb2O5@Carbon core-shell nanoparticles and reduced graphene oxide nanocomposites-
dc.typeArticle-
dc.contributor.AlternativeAuthor강기석-
dc.identifier.doi10.1002/adfm.201505548-
dc.citation.journaltitleAdvanced Functional Materials-
dc.identifier.scopusid2-s2.0-84979486605-
dc.citation.endpage3719-
dc.citation.number21-
dc.citation.startpage3711-
dc.citation.volume26-
dc.identifier.urlhttps://onlinelibrary.wiley.com/doi/abs/10.1002/adfm.201505548-
dc.identifier.rimsid49367-
dc.identifier.sci000377597400017-
dc.description.isOpenAccessN-
dc.contributor.affiliatedAuthorKang, Kisuk-
Appears in Collections:
College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Materials Science and Engineering (재료공학부)Journal Papers (저널논문_재료공학부)
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