Resistance-heating of carbon nanotube yarns in different atmospheres

Annealing and functionalization of carbon nanotube yarns (CNYs) is a prospective way of increasing the electrical conductivity of this material. We show a novel way, the simultaneous annealing and instant coating of the CNY by its resistance-heating in atmospheres of hydrocarbons. This method is cap...

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Bibliographic Details
Published in:Carbon (New York) 2018-07, Vol.133, p.232-238
Main Authors: Scholz, Maik, Hayashi, Yasuhiko, Khavrus, Vyacheslav, Chujo, Daiki, Inoue, Hirotaka, Hada, Masaki, Leonhardt, Albrecht, Büchner, Bernd, Hampel, Silke
Format: Article
Language:English
Subjects:
Annealing
Atmospheres
Carbon
Carbon nanotubes
Conductivity
Electrical resistivity
Heating
Hydrocarbons
Nanotubes
Yarns
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Summary:Annealing and functionalization of carbon nanotube yarns (CNYs) is a prospective way of increasing the electrical conductivity of this material. We show a novel way, the simultaneous annealing and instant coating of the CNY by its resistance-heating in atmospheres of hydrocarbons. This method is capable to preserve the lightweight properties of CNYs and increase the electrical conductivity. It could be raised by a factor of 2 through carbon deposition onto the yarns and the carbon nanotubes (CNTs) inside the yarn structure. By resistance-heating over a multistep process the conductivity could be even increased by a factor of 2.2. Comparison of annealing under atmosphere of different hydrocarbons and at different temperatures reveals the influence of resistance-heating on the structure of CNY. [Display omitted]
ISSN:0008-6223
1873-3891
DOI:10.1016/j.carbon.2018.03.022