Journal
CARBON
Volume 173, Issue -, Pages 901-909Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2020.11.065
Keywords
Carbon nanotube; High-aspect ratio; High-crystallinity; Carbon nanotube fiber; High-strength
Funding
- Samsung Research Funding & Incubation Center of Samsung Electronics [SRFC-MA1801-06]
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The DI-FCCVD technique enables continuous synthesis of carbon nanotubes with high aspect ratio and high crystallinity at a high production rate. The carbon nanotube fiber produced from this technique demonstrates comparable performance to state-of-the-art carbon fibers, making it suitable for widespread industrial applications.
The deep-injection floating-catalyst chemical vapor deposition (DI-FCCVD) technique is introduced to continuously synthesize carbon nanotubes (CNTs) with high aspect ratio (AR>17000) and high crystal-linity (I-G/I-D > 60) at high production rate (>6 mg/min). In this technique all reactants are injected directly and rapidly into high-temperature reaction zone through thin alumina tube; this process leads to simultaneous thermal decomposition of well-mixed catalyst precursors (ferrocene and thiophene), and thus to formation of uniformly-sized catalyst particles. Carbon nanotube fiber (CNTF) fabricated from high-AR CNT has specific strength of 2.94 N/tex and specific modulus of 231 N/tex, which are comparable to those of the state-of-the-art carbon fiber. Both DI-FCCVD and wet spinning methods are easily scalable to mass production, so this study may enable widespread industrial application of CNTFs. (C) 2020 Elsevier Ltd. All rights reserved.
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