高载流量碳纳米管密排电力电缆
High-Ampacity Power Cables of Tightly-Packed and Aligned Carbon Nanotubes
摘要：
我们通过测量其故障电流密度（FCD）和连续额定电流（CCR）值来表征高导电、轻且强的碳纳米管（CNT）纤维的载流能力（CCC）或载流量。我们表明，实验和理论上，这些纤维的CCC是由电流引起的焦耳加热和与周围环境的热交换之间的平衡。所测量的纤维的FCD值在10 $^7$至10 $^9$ A/m $^2$的范围内，并且通常高于先前报道的取向巴基纸、碳纤维和CNT纤维的值。据我们所知，这是首次报道CNT纤维的CCR。我们证明，具体的CCC（即，通过线性质量密度归一化）高于铜。
英文摘要：
We characterize the current-carrying capacity (CCC), or ampacity, of highly-conductive, light, and strong carbon nanotube (CNT) fibers by measuring their failure current density (FCD) and continuous current rating (CCR) values. We show, 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 10$^7$ to 10$^9$ A/m$^2$ and are generally higher than the previously reported values for aligned buckypapers, carbon fibers, and CNT fibers. To our knowledge, this is the first time the CCR for a CNT fiber has been reported. We demonstrate that the specific CCC (i.e., normalized by the linear mass density) of our CNT fibers are higher than those of copper.
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