High-Ampacity Power Cables of Tightly-Packed and Aligned Carbon Nanotubes

The current‐carrying capacity (CCC), or ampacity, of highly‐conductive, light, and strong carbon nanotube (CNT) fibers is characterized by measuring their failure current density (FCD) and continuous current rating (CCR) values. It is shown, both experimentally and theoretically, that the CCC of the...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Advanced functional materials 2014-06, Vol.24 (21), p.3241-3249
Hauptverfasser: Wang, Xuan, Behabtu, Natnael, Young, Colin C., Tsentalovich, Dmitri E., Pasquali, Matteo, Kono, Junichiro
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:The current‐carrying capacity (CCC), or ampacity, of highly‐conductive, light, and strong carbon nanotube (CNT) fibers is characterized by measuring their failure current density (FCD) and continuous current rating (CCR) values. It is shown, both experimentally and theoretically, that the CCC of these fibers is determined by the balance between current‐induced Joule heating and heat exchange with the surroundings. The measured FCD values of the fibers range from 107 to 109 A m−2 and are generally higher than the previously reported values for aligned buckypapers, carbon fibers, and CNT fibers. To the authors’ knowledge, this is the first time the CCR for a CNT fiber has been reported. The specific CCC value (i.e., normalized by the linear mass density) of these CNT fibers are demonstrated to be higher than those of copper. The current‐carrying capacity (CCC) of highly‐conductive, light, and strong carbon nanotube (CNT) fibers is characterized by measuring their failure current density and continuous current rating values. The specific CCC (i.e., normalized by the linear mass density) of our CNT fibers is demonstrated to be higher than that of copper, making those fibers promising for power transmission.
ISSN:1616-301X
1616-3028
DOI:10.1002/adfm.201303865