Carbon nanotube bundles with tensile strength over 80 GPa

Nature Nanotechnology
Yunxiang BaiFei Wei

Abstract

Carbon nanotubes (CNTs) are one of the strongest known materials. When assembled into fibres, however, their strength becomes impaired by defects, impurities, random orientations and discontinuous lengths. Fabricating CNT fibres with strength reaching that of a single CNT has been an enduring challenge. Here, we demonstrate the fabrication of CNT bundles (CNTBs) that are centimetres long with tensile strength over 80 GPa using ultralong defect-free CNTs. The tensile strength of CNTBs is controlled by the Daniels effect owing to the non-uniformity of the initial strains in the components. We propose a synchronous tightening and relaxing strategy to release these non-uniform initial strains. The fabricated CNTBs, consisting of a large number of components with parallel alignment, defect-free structures, continuous lengths and uniform initial strains, exhibit a tensile strength of 80 GPa (corresponding to an engineering tensile strength of 43 GPa), which is far higher than that of any other strong fibre.

References

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Citations

Jun 22, 2019·Advanced Materials·Peng WangYuHuang Wang
Jul 16, 2019·Nanoscale·Yanhui SongQingwen Li
Oct 1, 2019·Advanced Materials·Zhen HeShu-Hong Yu
Jan 31, 2020·Advanced Materials·Zhihan LiLiangbing Hu
Jul 8, 2018·Nature Nanotechnology·Rodney S Ruoff
Dec 5, 2019·Materials·Elena A KorznikovaSergey V Dmitriev
Mar 12, 2020·Nature Nanotechnology·Daniel A HellerMasako Yudasaka
Oct 20, 2018·Journal of the Royal Society, Interface·Dan M Popescu, Sean X Sun
Apr 22, 2020·Nature Communications·Haifei ZhanYuantong Gu
Aug 29, 2020·Science·Yunxiang BaiFei Wei
Sep 5, 2019·Nanomaterials·Mingqiang LiuShaowei Zhang
Feb 20, 2020·Chemical Reviews·Shaohua ChenHui-Ming Cheng
Mar 23, 2021·Advanced Science·Jinho HyonEdwin L Thomas
Mar 18, 2021·Nanotechnology·Liwen ZhangYuntian T Zhu
Mar 24, 2021·Angewandte Chemie·Tianzhu Zhou, Qunfeng Cheng
May 15, 2021·ACS Nano·Yizeng WuAnyuan Cao
Jul 20, 2021·Advanced Materials·John S BulmerJames A Elliott
Jun 28, 2019·The Journal of Physical Chemistry Letters·Qin-Yi LiKoji Takahashi
Feb 11, 2020·Chemical Reviews·Feng YangYan Li
Aug 21, 2020·ACS Applied Materials & Interfaces·Yuanyuan ShangKun Kelvin Fu
Oct 30, 2021·Journal of the American Chemical Society·Liu QianJin Zhang
Dec 7, 2021·Journal of Chemical Theory and Computation·Yeol Kyo ChoiWonpil Im

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Methods Mentioned

BETA
force measurement
AFM

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