Melt-mixed thermoplastic composites containing carbon nanotubes for thermoelectric applications
Flexible thermoelectric materials are prepared by melt mixing technique, which can be easily scaled up to industrial level. Hybrid filler systems of carbon nanotubes (CNTs) and copper oxide (CuO), which are environmental friendly materials and contain abundant earth elements, are melt mixed into a t...
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| Format: | Article |
| Language: | English |
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AIMS Press
2016-08-01
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| Series: | AIMS Materials Science |
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| Online Access: | http://www.aimspress.com/Materials/article/898/fulltext.html |
| _version_ | 1818953283612442624 |
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| author | Beate Krause Petra Pötschke Jinji Luo |
| author_facet | Beate Krause Petra Pötschke Jinji Luo |
| author_sort | Beate Krause |
| collection | DOAJ |
| description | Flexible thermoelectric materials are prepared by melt mixing technique, which can be easily scaled up to industrial level. Hybrid filler systems of carbon nanotubes (CNTs) and copper oxide (CuO), which are environmental friendly materials and contain abundant earth elements, are melt mixed into a thermoplastic matrix, namely polypropylene (PP). With the CNT addition, an electrical network could be built up inside the insulating PP for effective charge transport. The effect of CuO addition is determined by the corresponding CNT concentration. At high CNT concentration, largely above the percolation threshold (φc, ca. 0.1 wt%), the change in the TE properties is small. In contrast, at CNT concentration close to φc, the co-addition of CuO could simultaneously increase the electrical conductivity and Seebeck coefficient. With 5 wt% CuO and 0.8 wt% CNTs where a loose percolated network is formed, the Seebeck coefficient was increased from 34.1 µV/K to 45 µV/K while the electrical conductivity was from 1.6 × 10<sup>−3</sup> S/cm to 3.8 × 10<sup>−3</sup> S/cm, leading to a power factor of 9.6 × 10<sup>−4</sup> µW/mK<sup>2</sup> (cf. 1.8 × 10<sup>−4</sup> µW/mK<sup>2</sup> for the composite with only 0.8 wt% CNTs). |
| first_indexed | 2024-12-20T10:03:49Z |
| format | Article |
| id | doaj.art-5faad8e7e61043e0b306fb9ec9cf7e49 |
| institution | Directory Open Access Journal |
| issn | 2372-0484 |
| language | English |
| last_indexed | 2024-12-20T10:03:49Z |
| publishDate | 2016-08-01 |
| publisher | AIMS Press |
| record_format | Article |
| series | AIMS Materials Science |
| spelling | doaj.art-5faad8e7e61043e0b306fb9ec9cf7e492022-12-21T19:44:16ZengAIMS PressAIMS Materials Science2372-04842016-08-01331107111610.3934/matersci.2016.3.1107matersci-03-01107Melt-mixed thermoplastic composites containing carbon nanotubes for thermoelectric applicationsBeate Krause0Petra Pötschke1Jinji Luo2Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Strasse 6, D-01069, Dresden, GermanyLeibniz-Institut für Polymerforschung Dresden e.V., Hohe Strasse 6, D-01069, Dresden, GermanyLeibniz-Institut für Polymerforschung Dresden e.V., Hohe Strasse 6, D-01069, Dresden, GermanyFlexible thermoelectric materials are prepared by melt mixing technique, which can be easily scaled up to industrial level. Hybrid filler systems of carbon nanotubes (CNTs) and copper oxide (CuO), which are environmental friendly materials and contain abundant earth elements, are melt mixed into a thermoplastic matrix, namely polypropylene (PP). With the CNT addition, an electrical network could be built up inside the insulating PP for effective charge transport. The effect of CuO addition is determined by the corresponding CNT concentration. At high CNT concentration, largely above the percolation threshold (φc, ca. 0.1 wt%), the change in the TE properties is small. In contrast, at CNT concentration close to φc, the co-addition of CuO could simultaneously increase the electrical conductivity and Seebeck coefficient. With 5 wt% CuO and 0.8 wt% CNTs where a loose percolated network is formed, the Seebeck coefficient was increased from 34.1 µV/K to 45 µV/K while the electrical conductivity was from 1.6 × 10<sup>−3</sup> S/cm to 3.8 × 10<sup>−3</sup> S/cm, leading to a power factor of 9.6 × 10<sup>−4</sup> µW/mK<sup>2</sup> (cf. 1.8 × 10<sup>−4</sup> µW/mK<sup>2</sup> for the composite with only 0.8 wt% CNTs).http://www.aimspress.com/Materials/article/898/fulltext.htmlcarbon nanotubemelt mixingcopper oxidethermoelectriccompositethermoplastic |
| spellingShingle | Beate Krause Petra Pötschke Jinji Luo Melt-mixed thermoplastic composites containing carbon nanotubes for thermoelectric applications AIMS Materials Science carbon nanotube melt mixing copper oxide thermoelectric composite thermoplastic |
| title | Melt-mixed thermoplastic composites containing carbon nanotubes for thermoelectric applications |
| title_full | Melt-mixed thermoplastic composites containing carbon nanotubes for thermoelectric applications |
| title_fullStr | Melt-mixed thermoplastic composites containing carbon nanotubes for thermoelectric applications |
| title_full_unstemmed | Melt-mixed thermoplastic composites containing carbon nanotubes for thermoelectric applications |
| title_short | Melt-mixed thermoplastic composites containing carbon nanotubes for thermoelectric applications |
| title_sort | melt mixed thermoplastic composites containing carbon nanotubes for thermoelectric applications |
| topic | carbon nanotube melt mixing copper oxide thermoelectric composite thermoplastic |
| url | http://www.aimspress.com/Materials/article/898/fulltext.html |
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