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bielawsk,christopherw
다차원탄소재료연구단
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Covalent Confinement of Sulfur Copolymers onto Graphene Sheets Affords Ultrastable Lithium-Sulfur Batteries with Fast Cathode Kinetics

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dc.contributor.authorJunpeng Ma-
dc.contributor.authorJingbiao Fan-
dc.contributor.authorShang Chen-
dc.contributor.authorXinyue Yang-
dc.contributor.authorKwun Nam Hui-
dc.contributor.authorHongwen Zhang-
dc.contributor.authorChristopher W. Bielawski-
dc.contributor.authorJianxin Geng-
dc.date.available2019-07-19T05:37:38Z-
dc.date.created2019-05-29-
dc.date.issued2019-04-
dc.identifier.issn1944-8244-
dc.identifier.urihttps://pr.ibs.re.kr/handle/8788114/5865-
dc.description.abstractCopyright © 2019 American Chemical Society. Lithium-sulfur (Li-S) batteries have received significant attention due to the high theoretical specific capacity of sulfur (1675 mA h g -1 ). However, the practical applications are often handicapped by sluggish electrochemical kinetics and the "shuttle effect" of electrochemical intermediate polysulfides. Herein, we propose an in-situ copolymerization strategy for covalently confining a sulfur-containing copolymer onto reduced graphene oxide (RGO) to overcome the aforementioned challenges. The copolymerization was performed by heating elemental sulfur and isopropenylphenyl-functionalized RGO to afford a sulfur-containing copolymer, that is, RGO-g-poly(S-r-IDBI), which is featured by a high sulfur content and uniform distribution of the poly(S-r-IDBI) on RGO sheets. The covalent confinement of poly(S-r-IDBI) onto RGO sheets not only enhances the Li + diffusion coefficients by nearly 1 order of magnitude, but also improves the mechanical properties of the cathodes and suppresses the shuttle effect of polysulfides. As a result, the RGO-g-poly(S-r-IDBI) cathode exhibits an enhanced sulfur utilization rate (10% higher than that of an elemental sulfur cathode at 0.1C), an improved rate capacity (688 mA h g -1 for the RGO-g-poly(S-r-IDBI) cathode vs 400 mA h g -1 for an elemental sulfur cathode at 1C), and a high cycling stability (a capacity decay of 0.021% per cycle, less than one-tenth of that measured for an elemental sulfur cathode). © 2019 American Chemical Society-
dc.description.uri1-
dc.language영어-
dc.publisherAMER CHEMICAL SOC-
dc.subjectcathode kinetics-
dc.subjectcovalent binding-
dc.subjectgraphene-
dc.subjectlithium-sulfur batteries-
dc.subjectsulfur copolymers-
dc.titleCovalent Confinement of Sulfur Copolymers onto Graphene Sheets Affords Ultrastable Lithium-Sulfur Batteries with Fast Cathode Kinetics-
dc.typeArticle-
dc.type.rimsART-
dc.identifier.wosid000464769400020-
dc.identifier.scopusid2-s2.0-85064182615-
dc.identifier.rimsid68063-
dc.contributor.affiliatedAuthorChristopher W. Bielawski-
dc.identifier.doi10.1021/acsami.9b00214-
dc.identifier.bibliographicCitationACS APPLIED MATERIALS & INTERFACES, v.11, no.14, pp.13234 - 13243-
dc.citation.titleACS APPLIED MATERIALS & INTERFACES-
dc.citation.volume11-
dc.citation.number14-
dc.citation.startPage13234-
dc.citation.endPage13243-
dc.description.journalClass1-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
dc.subject.keywordPlusELEMENTAL-SULFUR-
dc.subject.keywordPlusREDOX KINETICS-
dc.subject.keywordPlusPERFORMANCE-
dc.subject.keywordPlusCARBON-
dc.subject.keywordPlusOXIDE-
dc.subject.keywordPlusPOLYSULFIDES-
dc.subject.keywordPlusCOMPOSITE-
dc.subject.keywordPlusNANOCOMPOSITES-
dc.subject.keywordPlusNANOSHEETS-
dc.subject.keywordAuthorsulfur copolymers-
dc.subject.keywordAuthorgraphene-
dc.subject.keywordAuthorcovalent binding-
dc.subject.keywordAuthorcathode kinetics-
dc.subject.keywordAuthorlithium-sulfur batteries-
Appears in Collections:
Center for Multidimensional Carbon Materials(다차원 탄소재료 연구단) > 1. Journal Papers (저널논문)
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