Sol-gel-driven combustion wave for scalable transformation of Mn(NO3)(2) precursors into MnO2-x/MWCNT supercapacitor electrodes capable of electrochemical activation
DC Field | Value | Language |
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dc.contributor.author | Shin, Dongjoon | - |
dc.contributor.author | Hwang, Hayoung | - |
dc.contributor.author | Yeo, Taehan | - |
dc.contributor.author | Park, Seonghyun | - |
dc.contributor.author | Kim, Taewon | - |
dc.contributor.author | Lee, Jaeho | - |
dc.contributor.author | Choi, Wonjoon | - |
dc.date.accessioned | 2021-09-01T01:47:11Z | - |
dc.date.available | 2021-09-01T01:47:11Z | - |
dc.date.created | 2021-06-18 | - |
dc.date.issued | 2019-11 | - |
dc.identifier.issn | 0008-6223 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/62120 | - |
dc.description.abstract | Hybrids of carbon-based materials and metals/metal oxides have emerged as promising candidates for electrochemical electrodes. While porous and inter-connected networks are necessary for a high specific area and an outstanding electrochemical resistance, the fabrication of rationally designed hybrids requires complex procedures. Herein, we report sol-gel-driven combustion waves (CWs) for one-step transformation from Mn(NO3)(2)/multi-walled carbon nanotube (MWCNT) into MnO2-x/MWCNT hybrids capable of electrochemical activation. A solidified Mn(NO3)(2) /MWCNT/nitrocellulose (NC) mixture was prepared by applying drop-casting/drying processes to a precursor solution. The sol-gel-driven CWs, induced through the exothermic reaction of NC, conducted a rapid thermochemical transformation into MnO2-x/MWCNT hybrids. Electrochemical activation using cyclic voltammetry methods resulted in the anodizing and oxidizing of MnO2-x/MWCNT hybrids, thereby presenting porous and inter-connected MnO2/MWCNT electrodes consisting of plate-like MnO2 structures and embedded MWCNTs, as well as the increasing capacitance by 42.5%. Owing to the extended surface area of the porous MnO2 having the conductive networks of entangled MWCNTs among plate-like structures, MnO2/MWCNT supercapacitor electrodes exhibited a highly enhanced specific capacitance (similar to 259.6 F/g) and an outstanding long-term capacitance retention over 10,000 charge-discharge cycles (similar to 91% at 100 mV/s). The fabrication strategy using sol-gel-driven CWs enables a facile, new synthesis method for versatile hybrids of carbon-based materials and metals/metal oxides. (C) 2019 Elsevier Ltd. All rights reserved. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | - |
dc.subject | CARBON | - |
dc.subject | GRAPHENE | - |
dc.subject | HYBRID | - |
dc.subject | FOAM | - |
dc.subject | POLYANILINE | - |
dc.subject | FABRICATION | - |
dc.subject | COMPOSITES | - |
dc.subject | FIBER | - |
dc.subject | FILMS | - |
dc.subject | SHELL | - |
dc.title | Sol-gel-driven combustion wave for scalable transformation of Mn(NO3)(2) precursors into MnO2-x/MWCNT supercapacitor electrodes capable of electrochemical activation | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Choi, Wonjoon | - |
dc.identifier.doi | 10.1016/j.carbon.2019.06.071 | - |
dc.identifier.scopusid | 2-s2.0-85067876272 | - |
dc.identifier.wosid | 000483384900082 | - |
dc.identifier.bibliographicCitation | CARBON, v.152, pp.746 - 754 | - |
dc.relation.isPartOf | CARBON | - |
dc.citation.title | CARBON | - |
dc.citation.volume | 152 | - |
dc.citation.startPage | 746 | - |
dc.citation.endPage | 754 | - |
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 | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.subject.keywordPlus | CARBON | - |
dc.subject.keywordPlus | GRAPHENE | - |
dc.subject.keywordPlus | HYBRID | - |
dc.subject.keywordPlus | FOAM | - |
dc.subject.keywordPlus | POLYANILINE | - |
dc.subject.keywordPlus | FABRICATION | - |
dc.subject.keywordPlus | COMPOSITES | - |
dc.subject.keywordPlus | FIBER | - |
dc.subject.keywordPlus | FILMS | - |
dc.subject.keywordPlus | SHELL | - |
dc.subject.keywordAuthor | Combustion synthesis | - |
dc.subject.keywordAuthor | Carbon nanotube | - |
dc.subject.keywordAuthor | Manganese oxide | - |
dc.subject.keywordAuthor | Sol-gel process | - |
dc.subject.keywordAuthor | Supercapacitor | - |
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