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Facile Synthesis of Nb2O5@Carbon Core-Shell Nanocrystals with Controlled Crystalline Structure for High-Power Anodes in Hybrid SupercapacitorsHighly Cited Paper

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dc.contributor.authorLim E.-
dc.contributor.authorJo C.-
dc.contributor.authorKim H.-
dc.contributor.authorKim M.-H.-
dc.contributor.authorMun Y.-
dc.contributor.authorChun J.-
dc.contributor.authorYe Y.-
dc.contributor.authorHwang J.-
dc.contributor.authorHa K.-S.-
dc.contributor.authorKwang Chul Roh-
dc.contributor.authorKisuk Kang-
dc.contributor.authorYoon S.-
dc.contributor.authorLee J.-
dc.date.available2016-01-25T00:13:21Z-
dc.date.created2015-08-17-
dc.date.issued2015-07-
dc.identifier.issn1936-0851-
dc.identifier.urihttps://pr.ibs.re.kr/handle/8788114/2340-
dc.description.abstractHybrid supercapacitors (battery-supercapacitor hybrid devices, HSCs) deliver high energy within seconds (excellent rate capability) with stable cyclability. One of the key limitations in developing high-performance HSCs is imbalance in power capability between the sluggish Faradaic lithium-intercalation anode and rapid non-Faradaic capacitive cathode. To solve this problem, we synthesize Nb<inf>2</inf>O<inf>5</inf>@carbon core-shell nanocyrstals (Nb<inf>2</inf>O<inf>5</inf>@C NCs) as high-power anode materials with controlled crystalline phases (orthorhombic (T) and pseudohexagonal (TT)) via a facile one-pot synthesis method based on a water-in-oil microemulsion system. The synthesis of ideal T-Nb<inf>2</inf>O<inf>5</inf> for fast Li+ diffusion is simply achieved by controlling the microemulsion parameter (e.g., pH control). The T-Nb<inf>2</inf>O<inf>5</inf>@C NCs shows a reversible specific capacity of ∼180 mA h g-1 at 0.05 A g-1 (1.1-3.0 V vs Li/Li+) with rapid rate capability compared to that of TT-Nb<inf>2</inf>O<inf>5</inf>@C and carbon shell-free Nb<inf>2</inf>O<inf>5</inf> NCs, mainly due to synergistic effects of (i) the structural merit of T-Nb<inf>2</inf>O<inf>5</inf> and (ii) the conductive carbon shell for high electron mobility. The highest energy (∼63 W h kg-1) and power (16528 W kg-1 achieved at ∼5 W h kg-1) densities within the voltage range of 1.0-3.5 V of the HSC using T-Nb<inf>2</inf>O<inf>5</inf>@C anode and MSP-20 cathode are remarkable. © 2015 American Chemical Society-
dc.description.uri1-
dc.language영어-
dc.publisherAMER CHEMICAL SOC-
dc.subjectcontrolled crystal structures-
dc.subjectcore-shell nanostructures-
dc.subjecthigh-power anodes-
dc.subjecthybrid supercapacitors-
dc.subjectorthorhombic Nb<inf>2</inf>O<inf>5</inf> nanocrystals-
dc.titleFacile Synthesis of Nb2O5@Carbon Core-Shell Nanocrystals with Controlled Crystalline Structure for High-Power Anodes in Hybrid Supercapacitors-
dc.typeArticle-
dc.type.rimsART-
dc.identifier.wosid000358823200087-
dc.identifier.scopusid2-s2.0-84938152116-
dc.identifier.rimsid20811ko
dc.date.tcdate2018-10-01-
dc.contributor.affiliatedAuthorKisuk Kang-
dc.identifier.doi10.1021/acsnano.5b02601-
dc.identifier.bibliographicCitationACS NANO, v.9, no.7, pp.7497 - 7505-
dc.citation.titleACS NANO-
dc.citation.volume9-
dc.citation.number7-
dc.citation.startPage7497-
dc.citation.endPage7505-
dc.date.scptcdate2018-10-01-
dc.description.wostc115-
dc.description.scptc118-
dc.description.journalClass1-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
dc.subject.keywordPlusLITHIUM-ION BATTERIES-
dc.subject.keywordPlusELECTROCHEMICAL ENERGY-STORAGE-
dc.subject.keywordPlusCARBIDE-DERIVED CARBON-
dc.subject.keywordPlusHIGH-PERFORMANCE ANODE-
dc.subject.keywordPlusNIOBIUM PENTOXIDE-
dc.subject.keywordPlusELECTRODE MATERIALS-
dc.subject.keywordPlusACTIVATED CARBON-
dc.subject.keywordPlusINTERCALATION PSEUDOCAPACITANCE-
dc.subject.keywordPlusNEGATIVE-ELECTRODE-
dc.subject.keywordPlusNB2O5 ELECTRODES-
dc.subject.keywordAuthororthorhombic Nb2O5 nanocrystals-
dc.subject.keywordAuthorcontrolled crystal structures-
dc.subject.keywordAuthorcore-shell nanostructures-
dc.subject.keywordAuthorhigh-power anodes-
dc.subject.keywordAuthorhybrid supercapacitors-
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > 1. Journal Papers (저널논문)
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