Effects of synthesis catalyst and temperature on broadband dielectric properties of nitrogen-doped carbon nanotube/polyvinylidene fluoride nanocomposites
dc.bibliographicCitation.firstPage | 260 | |
dc.bibliographicCitation.journalTitle | Carbon | eng |
dc.bibliographicCitation.lastPage | 278 | |
dc.bibliographicCitation.volume | 106 | |
dc.contributor.author | Ameli, A. | |
dc.contributor.author | Arjmand, M. | |
dc.contributor.author | Pötschke, Petra | |
dc.contributor.author | Krause, Beate | |
dc.contributor.author | Sundararaj, U. | |
dc.date.accessioned | 2023-10-13T09:22:14Z | |
dc.date.available | 2023-10-13T09:22:14Z | |
dc.date.issued | 2016 | |
dc.description.abstract | This study reports on nitrogen-doped carbon nanotube (N-CNT)/polymer nanocomposites exhibiting relatively high and frequency independent real permittivity (ϵ′) together with low dielectric loss (tan δ). N-CNTs were synthesized by chemical vapor deposition, and their nanocomposites were prepared by melt-mixing with polyvinylidene fluoride (PVDF). In the synthesis of N-CNTs, three catalysts of Co, Fe and Ni, and three temperatures of 650, 750 and 950 °C were employed. The morphology, aspect ratio, synthesis yield, remaining residue, nitrogen content, nitrogen bonding type, and powder conductivity of N-CNTs, and the morphology, polar crystalline phase, and broadband dielectric properties of N-CNT/PVDF nanocomposites were investigated. The results revealed that by proper selection of synthesis catalyst (Fe) and temperature (650 °C and 950 °C), nitrogen doping generated polarizable nanotubes via providing local polarization sites, and resulted in nanocomposites with favorable dielectric properties for charge storage applications at N-CNT loadings as low as 1.0 wt%. As a result, 3.5 wt% (N-CNT)Fe/950°C/PVDF nanocomposites exhibited an insulative behavior with ϵ' = 23.12 and tan δ = 0.05 at 1 kHz, a combination superior to that of PVDF, i.e., ϵ' = 8.4 and tan δ = 0.03 and to those of percolative nanocomposites, e.g., ϵ' = 71.20 and tan δ = 63.20 for 3.5 wt% (N-CNT)Fe/750°C/PVDF. Also, the relationships between the dielectric properties, N-CNT structure, and nanocomposite morphology were identified. | eng |
dc.description.version | acceptedVersion | |
dc.identifier.uri | https://oa.tib.eu/renate/handle/123456789/12481 | |
dc.identifier.uri | https://doi.org/10.34657/11511 | |
dc.language.iso | eng | |
dc.publisher | New York, NY [u.a.] : Pergamon Press | |
dc.relation.doi | 10.1016/j.carbon.2016.05.034 | |
dc.relation.issn | 0008-6223 | |
dc.rights.license | CC BY-NC-ND 4.0 Unported | |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | |
dc.subject.ddc | 540 | |
dc.subject.other | Aspect ratio | eng |
dc.subject.other | Catalysts | eng |
dc.subject.other | Chemical bonds | eng |
dc.subject.other | Chemical vapor deposition | eng |
dc.subject.other | Dielectric losses | eng |
dc.subject.other | Dielectric properties | eng |
dc.subject.other | Dielectric properties of solids | eng |
dc.subject.other | Doping (additives) | eng |
dc.subject.other | Fluorine compounds | eng |
dc.subject.other | Morphology | eng |
dc.subject.other | Nanocomposites | eng |
dc.subject.other | Nanotubes | eng |
dc.subject.other | Nitrogen | eng |
dc.subject.other | Permittivity | eng |
dc.subject.other | Yarn | eng |
dc.title | Effects of synthesis catalyst and temperature on broadband dielectric properties of nitrogen-doped carbon nanotube/polyvinylidene fluoride nanocomposites | eng |
dc.type | Article | eng |
dc.type | Text | eng |
tib.accessRights | openAccess | |
wgl.contributor | IPF | |
wgl.subject | Chemie | |
wgl.type | Zeitschriftenartikel |
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