Three-dimensional tellurium and nitrogen Co-doped mesoporous carbons for high performance supercapacitors
DC Field | Value | Language |
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dc.contributor.author | Kim, C.K. | - |
dc.contributor.author | Ji, J.-M. | - |
dc.contributor.author | Aftabuzzaman, M. | - |
dc.contributor.author | Kim, H.K. | - |
dc.date.accessioned | 2021-12-03T08:41:50Z | - |
dc.date.available | 2021-12-03T08:41:50Z | - |
dc.date.created | 2021-08-31 | - |
dc.date.issued | 2021-03-09 | - |
dc.identifier.issn | 2046-2069 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/129081 | - |
dc.description.abstract | Tellurium-doped mesoporous carbon composite materials (Te/NMC) have been prepared by a facile intercalation method in the presence of nitrogen-doped mesoporous carbon (NMC) with tellurium powder, for the first time. The effects of the co-doped N and Te in the mesoporous carbon matrix on the physical/chemical properties and capacitance performances were investigatedviathe use of various characterization methods and electrochemical studies. The as-prepared NMC and Te/NMC materials were found to mainly be composed of mesopores and maintained the 3D hierarchical graphite-like structure with lots of defect sites. By intercalation of Te atoms into the NMC materials, 2.12 at% (atom%) of Te was doped into NMC and the specific surface area of Te/NMC (261.07 m2g−1) decreased by about 1.5 times compared to that of NMC (437.96 m2g−1). In electrochemical measurements as a supercapacitor (SC) electrode, the Te/NMC based electrode, even with its lower porosity parameters, exhibited a higher capacitive performance compared to the NMC-based electrode. These results for Te/NMC arise due to the pseudo-capacitive effect of doped Te and the increase in the capacitive area available from the formation of interconnections in the mesoporous carbons through Te-O bonds. As a result, the synergetic effect of the Te and N atoms enables Te/NMC to exhibit the highest specific capacitance of 197 F g−1at a current density of 0.5 A g−1. Moreover, remarkable long-term cycling stability with the retention of more than 95% of the initial capacitance is observed for Te/NMC at a current density of 5 A g−1and also for 1000 charge-discharge cycles. © The Royal Society of Chemistry 2021. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | Royal Society of Chemistry | - |
dc.subject | Atoms | - |
dc.subject | Capacitance | - |
dc.subject | Carbon carbon composites | - |
dc.subject | Doping (additives) | - |
dc.subject | Electric discharges | - |
dc.subject | Electrochemical electrodes | - |
dc.subject | Nitrogen | - |
dc.subject | Supercapacitor | - |
dc.subject | Tellurium | - |
dc.subject | Tellurium compounds | - |
dc.subject | Capacitance performance | - |
dc.subject | Capacitive performance | - |
dc.subject | Characterization methods | - |
dc.subject | Charge-discharge cycle | - |
dc.subject | Electrochemical measurements | - |
dc.subject | Electrochemical studies | - |
dc.subject | Graphite-like structures | - |
dc.subject | Nitrogen-doped mesoporous carbons | - |
dc.subject | Mesoporous materials | - |
dc.title | Three-dimensional tellurium and nitrogen Co-doped mesoporous carbons for high performance supercapacitors | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kim, H.K. | - |
dc.identifier.doi | 10.1039/d0ra10374h | - |
dc.identifier.scopusid | 2-s2.0-85101820525 | - |
dc.identifier.wosid | 000623512700024 | - |
dc.identifier.bibliographicCitation | RSC Advances, v.11, no.15, pp.8628 - 8635 | - |
dc.relation.isPartOf | RSC Advances | - |
dc.citation.title | RSC Advances | - |
dc.citation.volume | 11 | - |
dc.citation.number | 15 | - |
dc.citation.startPage | 8628 | - |
dc.citation.endPage | 8635 | - |
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.journalWebOfScienceCategory | Chemistry, Multidisciplinary | - |
dc.subject.keywordPlus | Atoms | - |
dc.subject.keywordPlus | Capacitance | - |
dc.subject.keywordPlus | Carbon carbon composites | - |
dc.subject.keywordPlus | Doping (additives) | - |
dc.subject.keywordPlus | Electric discharges | - |
dc.subject.keywordPlus | Electrochemical electrodes | - |
dc.subject.keywordPlus | Nitrogen | - |
dc.subject.keywordPlus | Supercapacitor | - |
dc.subject.keywordPlus | Tellurium | - |
dc.subject.keywordPlus | Tellurium compounds | - |
dc.subject.keywordPlus | Capacitance performance | - |
dc.subject.keywordPlus | Capacitive performance | - |
dc.subject.keywordPlus | Characterization methods | - |
dc.subject.keywordPlus | Charge-discharge cycle | - |
dc.subject.keywordPlus | Electrochemical measurements | - |
dc.subject.keywordPlus | Electrochemical studies | - |
dc.subject.keywordPlus | Graphite-like structures | - |
dc.subject.keywordPlus | Nitrogen-doped mesoporous carbons | - |
dc.subject.keywordPlus | Mesoporous materials | - |
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