High-strength carbon nanotube fibers with near 100% purity acquired via isothermal vacuum annealing

Niu, Yutao; Zhou, Tao; Li, Zhi; Wang, Bin; Shixuan, Dong,; Zhou, Shiwu; Wu, Kunjie; Yong, Zhang; Zhang, Yongyi

doi:10.1016/j.diamond.2021.108391

Cited by 6 publications

(2 citation statements)

References 51 publications

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“…CNTFs were prepared by the floating catalyst chemical vapor deposition method. , The acetone solution containing ferrocene (0.5 wt %) and thiophene (1.0 wt %) was injected into the vertical reactor tube with a diameter of 100 mm. A mixture of hydrogen and argon with a total gas flow of 5 L/min was the carrier gas.…”

Section: Methodsmentioning

confidence: 99%

Graphene Interlocking Carbon Nanotubes for High-Strength and High-Conductivity Fibers

Sun

Lü

et al. 2023

ACS Appl. Mater. Interfaces

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Carbon nanotubes (CNTs) are promising building blocks for the fabrication of novel fibers with structural and functional properties. However, the mechanical and electrical performances of carbon nanotube fibers (CNTFs) are far lower than the intrinsic properties of individual CNTs. Exploring methods for the controllable assembly and continuous preparation of highperformance CNTFs is still challenging. Herein, a graphene/ chlorosulfonic acid-assisted wet-stretching method is developed to produce highly densified and well-aligned graphene/carbon nanotube fibers (G/CNTFs) with excellent mechanical and electrical performances. Graphene with small size and high quality can bridge the adjacent CNTs to avoid the interfacial slippage under deformation, which facilitates the formation of a robust architecture with abundant conductive pathways. Their ordered structure and enhanced interfacial interactions endow the fibers with both high strength (4.7 GPa) and high electrical conductivity (more than 2 × 10 6 S/m). G/CNTF-based lightweight wires show good flexibility and knittability, and the high-performance fiber heaters exhibit ultrafast electrothermal response over 1000 °C/s and a low operation voltage of 3 V. This method paves the way for optimizing the microstructures and producing high-strength and high-conductivity CNTFs, which are promising candidates for the high-value fiberbased applications.

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Section: Methodsmentioning

confidence: 99%

Graphene Interlocking Carbon Nanotubes for High-Strength and High-Conductivity Fibers

Sun

Lü

et al. 2023

ACS Appl. Mater. Interfaces

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“…CNT yarns are long assemblies of CNTs in which CNTs or CNT bundles are interlocked continuously. [19][20][21][22][23][24][25][26][27][28][29][30][31][32] CNT yarns enable the fabrication of lightweight and high tensile strength cables and textiles with high electrical and thermal conductivities. They can be used for various applications, such as lightweight and high tensile electrical wires and cables.…”

Section: Introductionmentioning

confidence: 99%

Formation of carbon nanotube yarn by gas discharge breakdown

Hayama

Sato

2022

Jpn. J. Appl. Phys.

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Gas discharge breakdown generated between electrodes, the cathode side of which was coated with carbon nanotube (CNT) film, forms filament-like CNTs that bridges between the electrodes. This method may be used as a simple method for CNT spinning. However, the CNT filament formation efficiency was low, and therefore improvement of the filament formation efficiency has been required. We previously reported that gas discharges by multi-electrode configuration (cathode, anode, collection, and auxiliary electrodes) promotes formation of many long CNT filaments, which have lengths longer than 10 mm. By collecting these filaments, spinning of CNT can be efficiently carried out, and it enables formation of longer CNT yarns. In this study, we attempted to form a twisted CNT yarn using a wire-shaped and rotatable collection electrode, which can efficiently collect the CNT filaments formed by the gas discharge breakdown and can twist the filaments by rotating it.

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Pore structure changes in free-standing single-wall carbon nanotube film on vacuum high-temperature annealing

Kamijyou

Kukobat²,

Furuse³

et al. 2022

Carbon Trends

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High-strength carbon nanotube fibers with near 100% purity acquired via isothermal vacuum annealing

Cited by 6 publications

References 51 publications

Graphene Interlocking Carbon Nanotubes for High-Strength and High-Conductivity Fibers

Graphene Interlocking Carbon Nanotubes for High-Strength and High-Conductivity Fibers

Formation of carbon nanotube yarn by gas discharge breakdown

Pore structure changes in free-standing single-wall carbon nanotube film on vacuum high-temperature annealing

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