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Extremely large, non-oxidized graphene flakes based on spontaneous solvent insertion into graphite intercalation compounds
DC Field | Value | Language |
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dc.contributor.author | Kim, Jungmo | - |
dc.contributor.author | Yoon, Gabin | - |
dc.contributor.author | Kim, Jin | - |
dc.contributor.author | Yoon, Hyewon | - |
dc.contributor.author | Baek, Jinwook | - |
dc.contributor.author | Lee, Joong Hee | - |
dc.contributor.author | Kang, Kisuk | - |
dc.contributor.author | Jeon, Seokwoo | - |
dc.date.accessioned | 2020-04-25T07:49:24Z | - |
dc.date.available | 2020-04-25T07:49:24Z | - |
dc.date.created | 2019-07-10 | - |
dc.date.issued | 2018-11 | - |
dc.identifier.citation | Carbon, Vol.139, pp.309-316 | - |
dc.identifier.issn | 0008-6223 | - |
dc.identifier.other | 78312 | - |
dc.identifier.uri | https://hdl.handle.net/10371/164996 | - |
dc.description.abstract | Demand for an effective strategy for exfoliating layered materials into flakes without perturbing their intrinsic structure is growing. Herein, we introduce an effective fabrication method of large-sized non-oxidized graphene flakes (NOGFs) as a representative example of a general strategy using spontaneous insertion of exfoliating medium into a layered material. We fabricated a ternary graphite intercalation compound (t-GIC) with stoichiometry of KC24(THF)(2), and analyzed its morphology and electronic structure through experimental and computational approach. Interactions between the t-GIC and aprotic organic solvents with different polarities were investigated, where a unique swelling behavior was observed with dimethyl sulfoxide (DMSO). Based on the analysis of the phenomena, we demonstrate facile exfoliation of the t-GIC in polyvinyl pyrrolidone (PVP)-DMSO solution for fabrication of highly crystalline and large-sized NOGFs. The lateral size of the NOGFs ranges over 30 mu m, while the 98% having thickness below 10 layers. The NOGF film exhibits supreme electrical conductivity of 3.36 x 10(5) S/m, which is, to our best knowledge, the highest value for a thin conductive film made of graphene flakes. (C) 2018 Elsevier Ltd. All rights reserved. | - |
dc.language | 영어 | - |
dc.publisher | Pergamon Press Ltd. | - |
dc.title | Extremely large, non-oxidized graphene flakes based on spontaneous solvent insertion into graphite intercalation compounds | - |
dc.type | Article | - |
dc.contributor.AlternativeAuthor | 강기석 | - |
dc.identifier.doi | 10.1016/j.carbon.2018.06.071 | - |
dc.citation.journaltitle | Carbon | - |
dc.identifier.wosid | 000446063100036 | - |
dc.identifier.scopusid | 2-s2.0-85053221173 | - |
dc.citation.endpage | 316 | - |
dc.citation.startpage | 309 | - |
dc.citation.volume | 139 | - |
dc.identifier.sci | 000446063100036 | - |
dc.description.isOpenAccess | N | - |
dc.contributor.affiliatedAuthor | Kang, Kisuk | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.subject.keywordPlus | HIGH-QUALITY GRAPHENE | - |
dc.subject.keywordPlus | THERMAL-CONDUCTIVITY | - |
dc.subject.keywordPlus | EXFOLIATION | - |
dc.subject.keywordPlus | COMPOSITES | - |
dc.subject.keywordPlus | OXIDE | - |
dc.subject.keywordPlus | FIBERS | - |
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