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DC Field | Value | Language |
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dc.citation.endPage | 1670 | - |
dc.citation.number | 5 | - |
dc.citation.startPage | 1663 | - |
dc.citation.title | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.citation.volume | 4 | - |
dc.contributor.author | Senthilkumar, Krishnan | - |
dc.contributor.author | Prabakar, S. J. Richard | - |
dc.contributor.author | Park, Chunkuk | - |
dc.contributor.author | Jeong, Seok | - |
dc.contributor.author | Lah, Myoung Soo | - |
dc.contributor.author | Pyo, Myoungho | - |
dc.date.accessioned | 2023-12-22T00:09:06Z | - |
dc.date.available | 2023-12-22T00:09:06Z | - |
dc.date.created | 2017-01-06 | - |
dc.date.issued | 2016-02 | - |
dc.description.abstract | Control of the microstructures of graphene oxide (GO) is realized by introducing a cationic fullerene (CFU), resulting in a high-performance pseudo-capacitor. The strong electrostatic interaction between anionic GO and the CFU produces a self-assembled composite (GO/CFU), in which the CFU units intervene to form randomly stacked GO layers. The CFU acts as a spacer between GO layers, allowing a significant fraction of the oxygen-functional groups of GO to be redox-active. When tested as a pseudo-capacitor in 1.0 M H2SO4, the optimized GO/CFU composite delivers a capacitance of 357 F g(-1) at 0.4 A g(-1), in contrast to 160 F g(-1) for GO alone, which is one of the greatest values reported for graphene composites with electro-inactive carbonaceous entities. The improvement in the capacitance by CFU incorporation is also evidenced at a high charge/discharge rate (285 and 137 F g(-1) at 5 A g(-1) for GO/CFU and GO, respectively). As a result, the GO/CFU composite delivers an energy density of 40 W h kg(-1) and a power density of 2793 W kg(-1) at 5 A g(-1), in contrast to 19 W h kg(-1) and 2748 W kg(-1) for GO alone. During 5000 charge/discharge cycles at 5 A g(-1), the capacitance of the GO/CFU composite increases slightly (4% increase in GO/CFU vs. 4% decrease in GO), which validates the effectiveness of a self-assembly strategy for high performance supercapacitor applications. | - |
dc.identifier.bibliographicCitation | JOURNAL OF MATERIALS CHEMISTRY A, v.4, no.5, pp.1663 - 1670 | - |
dc.identifier.doi | 10.1039/c5ta09929c | - |
dc.identifier.issn | 2050-7488 | - |
dc.identifier.scopusid | 2-s2.0-84956669656 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/21132 | - |
dc.identifier.url | http://pubs.rsc.org/en/Content/ArticleLanding/2016/TA/C5TA09929C#!divAbstract | - |
dc.identifier.wosid | 000368839200016 | - |
dc.language | 영어 | - |
dc.publisher | ROYAL SOC CHEMISTRYROYAL SOC CHEMISTRY | - |
dc.title | Graphene oxide self-assembled with a cationic fullerene for high performance pseudo-capacitors | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary | - |
dc.relation.journalResearchArea | Chemistry; Energy & Fuels; Materials Science | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | SUPERCAPACITOR ELECTRODES | - |
dc.subject.keywordPlus | SURFACE-AREA | - |
dc.subject.keywordPlus | CARBON | - |
dc.subject.keywordPlus | COMPOSITE | - |
dc.subject.keywordPlus | BATTERIES | - |
dc.subject.keywordPlus | ENERGY | - |
dc.subject.keywordPlus | POLYANILINE | - |
dc.subject.keywordPlus | STABILITY | - |
dc.subject.keywordPlus | DENSITY | - |
dc.subject.keywordPlus | SHEETS | - |
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