Fabrication of bimodal micro-mesoporous amorphous carbon-graphitic carbon-reduced graphene oxide composite microspheres prepared by pilot-scale spray drying and their application in supercapacitors
DC Field | Value | Language |
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dc.contributor.author | Kwon, Ha-Na | - |
dc.contributor.author | Park, Gi Dae | - |
dc.contributor.author | Kang, Yun Chan | - |
dc.contributor.author | Roh, Kwang Chul | - |
dc.date.accessioned | 2021-09-01T16:59:00Z | - |
dc.date.available | 2021-09-01T16:59:00Z | - |
dc.date.created | 2021-06-19 | - |
dc.date.issued | 2019-04 | - |
dc.identifier.issn | 0008-6223 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/66476 | - |
dc.description.abstract | There has been a demand for a suitable method which is applicable to mass production of electrode materials for supercapacitor. Herein, the synthesis of amorphous carbonegraphitic carbon-reduced graphene oxide (AC-GC-rGO-a) composite microspheres by pilot-scale spray drying/KOH activation is described and their performance as an electrode material is examined. Through pilot-scale spray drying in a 2 m high chamber, large-scale production of precursor (Fe nitrate-dextrin-GO composite) microspheres is realizable. Metallic Fe nanocrystals formed by carbothermal reduction play a role in the transformation of the dextrin-derived amorphous carbon into graphitic carbon layers. Micropores are then formed from the dextrin-derived amorphous carbon by KOH activation, and finally, bimodal pore-structured AC-GC-rGO-a composite microspheres are prepared. In particular, it is revealed that crumpling of the rGO increases the electrical conductivity of the composite microspheres and thus results in a large specific capacitance (408.2 F g(-1)) and enhanced rate performance. Additionally, AC-GC-rGO-a features improved cycling stability, exhibiting a capacity retention of 94.7% after 10,000 cycles at 10 mA g(-1). Therefore, the developed composite surpasses other carbon materials and graphene oxide composites and is potentially suitable for mass production. (C) 2019 Elsevier Ltd. All rights reserved. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | - |
dc.subject | PERFORMANCE SUPERCAPACITORS | - |
dc.subject | ELECTRODE MATERIALS | - |
dc.subject | POWDERS | - |
dc.title | Fabrication of bimodal micro-mesoporous amorphous carbon-graphitic carbon-reduced graphene oxide composite microspheres prepared by pilot-scale spray drying and their application in supercapacitors | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kang, Yun Chan | - |
dc.identifier.doi | 10.1016/j.carbon.2018.12.111 | - |
dc.identifier.scopusid | 2-s2.0-85060006473 | - |
dc.identifier.wosid | 000459991900066 | - |
dc.identifier.bibliographicCitation | CARBON, v.144, pp.591 - 600 | - |
dc.relation.isPartOf | CARBON | - |
dc.citation.title | CARBON | - |
dc.citation.volume | 144 | - |
dc.citation.startPage | 591 | - |
dc.citation.endPage | 600 | - |
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 | PERFORMANCE SUPERCAPACITORS | - |
dc.subject.keywordPlus | ELECTRODE MATERIALS | - |
dc.subject.keywordPlus | POWDERS | - |
dc.subject.keywordAuthor | Microporous materials | - |
dc.subject.keywordAuthor | Mesoporous materials | - |
dc.subject.keywordAuthor | Carbon microspheres | - |
dc.subject.keywordAuthor | Reduced graphene oxide | - |
dc.subject.keywordAuthor | Supercapacitor | - |
dc.subject.keywordAuthor | Spray drying | - |
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