Nitrogen-Doped Carbon Nanotube/Polypropylene Composites with Negative Seebeck Coefficient
dc.bibliographicCitation.firstPage | 14 | |
dc.bibliographicCitation.issue | 1 | |
dc.bibliographicCitation.journalTitle | Journal of composites science | eng |
dc.bibliographicCitation.volume | 4 | |
dc.contributor.author | Krause, Beate | |
dc.contributor.author | Konidakis, Ioannis | |
dc.contributor.author | Arjmand, Mohammad | |
dc.contributor.author | Sundararaj, Uttandaraman | |
dc.contributor.author | Fuge, Robert | |
dc.contributor.author | Liebscher, Marco | |
dc.contributor.author | Hampel, Silke | |
dc.contributor.author | Klaus, Maxim | |
dc.contributor.author | Serpetzoglou, Efthymis | |
dc.contributor.author | Stratakis, Emmanuel | |
dc.contributor.author | Pötschke, Petra | |
dc.date.accessioned | 2023-04-20T07:36:00Z | |
dc.date.available | 2023-04-20T07:36:00Z | |
dc.date.issued | 2020 | |
dc.description.abstract | This study describes the application of multi-walled carbon nanotubes that were nitrogen-doped during their synthesis (N-MWCNTs) in melt-mixed polypropylene (PP) composites. Different types of N-MWCNTs, synthesized using different methods, were used and compared. Four of the five MWCNT grades showed negative Seebeck coefficients (S), indicating n-type charge carrier behavior. All prepared composites (with a concentration between 2 and 7.5 wt% N-MWCNTs) also showed negative S values, which in most cases had a higher negative value than the corresponding nanotubes. The S values achieved were between 1.0 µV/K and −13.8 µV/K for the N-MWCNT buckypapers or powders and between −4.7 µV/K and −22.8 µV/K for the corresponding composites. With a higher content of N-MWCNTs, the increase in electrical conductivity led to increasing values of the power factor (PF) despite the unstable behavior of the Seebeck coefficient. The highest power factor was achieved with 4 wt% N-MWCNT, where a suitable combination of high electrical conductivity and acceptable Seebeck coefficient led to a PF value of 6.1 × 10−3 µW/(m·K2). First experiments have shown that transient absorption spectroscopy (TAS) is a useful tool to study the carrier transfer process in CNTs in composites and to correlate it with the Seebeck coefficient. | eng |
dc.description.version | publishedVersion | eng |
dc.identifier.uri | https://oa.tib.eu/renate/handle/123456789/12049 | |
dc.identifier.uri | http://dx.doi.org/10.34657/11082 | |
dc.language.iso | eng | |
dc.publisher | Basel : MDPI | |
dc.relation.doi | https://doi.org/10.3390/jcs4010014 | |
dc.relation.essn | 2504-477X | |
dc.rights.license | CC BY 4.0 Unported | |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
dc.subject.ddc | 620 | |
dc.subject.ddc | 670 | |
dc.subject.other | Carbon nanotube | eng |
dc.subject.other | Nitrogen doping | eng |
dc.subject.other | Polypropylene | eng |
dc.subject.other | Thermoelectric | eng |
dc.title | Nitrogen-Doped Carbon Nanotube/Polypropylene Composites with Negative Seebeck Coefficient | eng |
dc.type | Article | eng |
dc.type | Text | eng |
tib.accessRights | openAccess | |
wgl.contributor | IPF | |
wgl.subject | Ingenieurwissenschaften | ger |
wgl.type | Zeitschriftenartikel | ger |
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