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J. Korean Ceram. Soc. > Volume 58(2); 2021 > Article
Journal of the Korean Ceramic Society 2021;58(2): 148-159.
doi: https://doi.org/10.1007/s43207-020-00106-0
Synthesis, property, and application of carbon nanotube fiber
Sung-Hyun Lee1, Ji Hong Park1,2, Seung Min Kim1
1Institute of Advanced Composite Materials, Korea Institute of Science and Technology (KIST), Jeonbuk 55324, Republic of Korea
2Department of Materials Science and Engineering , Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
Correspondence  Seung Min Kim ,Email: seungmin.kim@kist.re.kr
Received: September 1, 2020; Revised: December 14, 2020   Accepted: December 29, 2020.  Published online: March 31, 2021.
Carbon nanotube (CNT) fi ber (CNTF), which is a collection of many CNTs aligned along the fiber axis, has attracted significant attention as a next-generation material with excellent properties. CNTF is a macroscopic material that potentially resembles the intrinsic properties of CNTs (high strength, conductivity, flexibility, etc.) that constitute it. Recent studies have shown that the specific strength of CNTF can reach 5.5 N/tex, which is much higher than that of the state-of-the-art carbon fi ber (Toray T1100G, 3.9 N/tex) and the specific conductivity can reach 5640 S m2/kg, which is comparable to that of copper. This review first introduces the synthesis methods of CNTF, which can mainly be classified into three categories: forest spinning, direct spinning, and solution spinning. Each of the synthesis methods has its own merits and drawbacks, and the principles and characteristics of these methods are discussed. Second, various post-treatment methods to improve the properties of as-spun CNTFs are introduced. Without appropriate post-treatments, in the case of CNTFs fabricated by forest spinning and direct spinning, the properties cannot meet the demands for various applications. In particular, direct spinning combined with the appropriate post-treatment may potentially lead to the fabrication of CNTFs with excellent properties at relatively high productivity. Finally, the various application fields that can exploit the excellent characteristics of CNTF are introduced.
Key words: Carbon nanotubes · Carbon nanotube fibers · Synthesis methods · Properties · Applications
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