Formation of Hollow Co3O4 Nanoparticles on Nitrogen-doped Porous Carbons for Highly Capacitive Performance

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dc.contributor.authorKim, Gi Mihnko
dc.contributor.authorPark, Jae Hyunko
dc.contributor.authorLee, Jae Wooko
dc.date.accessioned2016-07-04T03:14:23Z-
dc.date.available2016-07-04T03:14:23Z-
dc.date.created2016-04-28-
dc.date.created2016-04-28-
dc.date.created2016-04-28-
dc.date.issued2016-03-
dc.identifier.citationCHEMISTRYSELECT, v.1, no.3, pp.560 - 566-
dc.identifier.issn2365-6549-
dc.identifier.urihttp://hdl.handle.net/10203/209055-
dc.description.abstractCo3O4 nanoparticles are incorporated into nitrogen-doped porous carbons to investigate their potential as supercapacitors. The nano-sized Co3O4 particles grow and their morphology becomes hollow on the carbon support, which is attributed to the atomic diffusion (the Kirkendall effect) during the annealing. The cobalt-doped composites have high BET surface areas of about 3000 m2 g−1 and possess mesopore-dominant structures caused by the hollow Co3O4 nanoparticles. As a result, the hollow Co3O4 in the composites simultaneously induces both enhanced pseudo-capacitance and efficient pore structure for energy storage. The specific capacitance of the composites is as high as 300 F g−1 in an aqueous solution of 6 M KOH at 1 A g−1, and the material shows competitive specific capacitance of 210 F g−1 at 10 A g−1 for a high power density. The present study provides a unique insight into the synthesis of hollow nanoparticles on a porous substrate material for high-performance supercapacitance.-
dc.languageEnglish-
dc.publisherWILEY-V C H VERLAG GMBH-
dc.titleFormation of Hollow Co3O4 Nanoparticles on Nitrogen-doped Porous Carbons for Highly Capacitive Performance-
dc.typeArticle-
dc.identifier.wosid000395395200037-
dc.identifier.scopusid2-s2.0-84991701202-
dc.type.rimsART-
dc.citation.volume1-
dc.citation.issue3-
dc.citation.beginningpage560-
dc.citation.endingpage566-
dc.citation.publicationnameCHEMISTRYSELECT-
dc.identifier.doi10.1002/slct.201600112-
dc.contributor.localauthorLee, Jae Woo-
dc.description.isOpenAccessN-
dc.type.journalArticleArticle-
dc.subject.keywordAuthorDoping-
dc.subject.keywordAuthorHollow Co3O4 nanoparticle-
dc.subject.keywordAuthorKirkendall effect-
dc.subject.keywordAuthorOxidation-
dc.subject.keywordAuthorSupercapacitor-
dc.subject.keywordPlusCOBALT OXIDE CO3O4-
dc.subject.keywordPlusSUPERCAPACITOR ELECTRODES-
dc.subject.keywordPlusELECTROCHEMICAL PERFORMANCE-
dc.subject.keywordPlusNANOSTRUCTURED MATERIALS-
dc.subject.keywordPlusACTIVATED CARBONS-
dc.subject.keywordPlusFACILE SYNTHESIS-
dc.subject.keywordPlusENERGY-STORAGE-
dc.subject.keywordPlusGRAPHENE-
dc.subject.keywordPlusNANOCRYSTALS-
dc.subject.keywordPlusNANOTUBES-
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