@article{Niu2025, 
author = {Yutao Niu and Zhao He and Shan Wang and Yichi Zhang and Zhengpeng Yang and Yongyi Zhang and Zhenzhong Yong and Kunjie Wu and Liming Zhao and Zhanhu Guo and Muqiang Jian and Qingwen Li},
title = {Continuous carbon nanotube fiber with an extremely high average specific strength of 4.1 N·tex−1},
year = {2025},
journal = {Nano Research},
volume = {18},
number = {8},
pages = {94907584},
keywords = {thermal conductivity, high strength, carbon source, structural regulation, continuous carbon nanotube fibers},
url = {https://www.sciopen.com/article/10.26599/NR.2025.94907584},
doi = {10.26599/NR.2025.94907584},
abstract = {Carbon nanotube fibers (CNTFs), which hold a transformative potential across fields from aerospace to wearable electronics, have been reported as superstrong fibers, while the fabrication of continuous fibers with excellent strength remains a challenge. Herein, we proposed a mixed carbon-source strategy that engineered carbon nanotube (CNT) aerogels with optimally aligned and controlled-entanglement CNT bundles, ensuring structural uniformity and enabling densification into highly oriented architectures via chlorosulfonic acid-assisted stretching, thus yielding continuous high-performance CNTFs. These continuous CNTFs exhibited superior tensile strength (4.10 ± 0.17 N·tex−1, exceeding T1100), modulus (268 ± 16 N·tex−1, 1.4 times of T1100), thermal conductivity (400 W·m−1·K−1, over 30 times of T1100) and electrical conductivity (1480 S·m2·kg−1), along with exceptional flexibility indicated by knot-strength retention exceeding 45%. Comprehensive multi-point assessments confirmed that this method yielded a remarkable uniformity in both structural and functional properties across kilometer-scale lengths. These findings highlight the crucial role of nanotube alignment and interfacial engineering in enabling the scalable industrial implementation of high-performance CNTFs.}
}