Resistance-heating of carbon nanotube yarns in different atmospheres. (July 2018)

• Record Type: Journal Article
• Authors: Scholz, Maik; Hayashi, Yasuhiko; Khavrus, Vyacheslav; Chujo, Daiki; Inoue, Hirotaka; Hada, Masaki; Leonhardt, Albrecht; Büchner, Bernd; Hampel, Silke
• Is Part Of: Carbon. Volume 133(2018)
• Page Start: 232
• Page End: 238
• Publication Date: 2018-07
• Subjects: Carbon -- Periodicals; Carbone -- Périodiques; Koolstof; Toepassingen; Electronic journals; 546.681
• DOI: 10.1016/j.carbon.2018.03.022
• Languages: English
• ISSNs: 0008-6223

Abstract

Abstract: 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. Graphical abstract: Image 1