2.5 V compact supercapacitors based on ultrathin carbon nanotube films for AC line filtering
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Yoo, Yongju | - |
dc.contributor.author | Kim, Seungwook | - |
dc.contributor.author | Kim, Byungwoo | - |
dc.contributor.author | Kim, Woong | - |
dc.date.accessioned | 2021-09-05T01:12:17Z | - |
dc.date.available | 2021-09-05T01:12:17Z | - |
dc.date.created | 2021-06-15 | - |
dc.date.issued | 2015 | - |
dc.identifier.issn | 2050-7488 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/96325 | - |
dc.description.abstract | A high volumetric energy density, and hence compactness, is an essential property for the supercapacitors needed to replace the bulky aluminum electrolytic capacitors currently used for alternating current (AC) line filtering. In this paper, we demonstrate the fabrication of AC-line-filtering supercapacitors with unprecedentedly high volumetric energy densities (E-vol approximate to 4.1 mW h cc(-1) at 120 Hz). This high density is achieved by using ultrathin and dense carbon nanotube (CNT) films as electrodes (t approximate to 300 nm, d approximate to 1.1 g cc(-1)). Importantly, the mesopores and short pore length of the ultrathin films enable sufficiently fast electrolyte ion movement, even with organic electrolytes, for AC line filtering (impedance phase angle, phi approximate to -82.2 degrees at 120 Hz). The use of organic electrolytes extends the operating voltage window (V = 2.5 V), and therefore significantly increases the energy density (E-vol proportional to V-2). Moreover, we show that a gold insertion layer provides the excellent interfacial qualities between the CNTs and aluminum current collector that are required for fast-response applications. Our findings may greatly advance supercapacitor research and technology for emerging high-frequency applications. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.subject | DOUBLE-LAYER CAPACITORS | - |
dc.subject | ENERGY-STORAGE | - |
dc.subject | PERFORMANCE | - |
dc.subject | ELECTRODES | - |
dc.subject | DENSITY | - |
dc.title | 2.5 V compact supercapacitors based on ultrathin carbon nanotube films for AC line filtering | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kim, Woong | - |
dc.identifier.doi | 10.1039/c5ta02073e | - |
dc.identifier.scopusid | 2-s2.0-84930634158 | - |
dc.identifier.wosid | 000355556300018 | - |
dc.identifier.bibliographicCitation | JOURNAL OF MATERIALS CHEMISTRY A, v.3, no.22, pp.11801 - 11806 | - |
dc.relation.isPartOf | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.citation.title | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.citation.volume | 3 | - |
dc.citation.number | 22 | - |
dc.citation.startPage | 11801 | - |
dc.citation.endPage | 11806 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Energy & Fuels | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Energy & Fuels | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.subject.keywordPlus | DOUBLE-LAYER CAPACITORS | - |
dc.subject.keywordPlus | ENERGY-STORAGE | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | ELECTRODES | - |
dc.subject.keywordPlus | DENSITY | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
(02841) 서울특별시 성북구 안암로 14502-3290-1114
COPYRIGHT © 2021 Korea University. All Rights Reserved.
Certain data included herein are derived from the © Web of Science of Clarivate Analytics. All rights reserved.
You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.