Journal
NANOTECHNOLOGY
Volume 33, Issue 28, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/1361-6528/ac652b
Keywords
carbon nanotube fiber; carbon nanotube; copper composite fiber; interface modification; electrical performance
Funding
- National Natural Science Foundation of China [52162007]
- Nanchang major scientific and technological breakthroughs [2020BI47]
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Electrodeposition of Cu on thiolated CNT fibers is a convenient strategy to enhance the electrical and mechanical performance of CNT/Cu composite fibers. This modification method does not require heat treatment and can be applied for large-scale production.
Carbon nanotube (CNT)/copper (Cu) composite fibers are placed great expectations as the next generation of light-weight, conductive wires. However, the electrical and mechanical performances still need to be enhanced. Herein, we demonstrate a strategy that is electrodeposition Cu on thiolated CNT fibers to solve the grand challenge which is enhancing the performance of CNT/Cu composite fibers. Thiol groups are introduced to the surface of the CNT fibers through a controllable O-2 plasma carboxylation process and amide reaction. Compared with CNT/Cu composite fibers, there are 82.7% and 29.6% improvements in electrical conductivity and tensile strength of interface thiol-modification composite fibers. The enhancement mechanism is also explored that thiolated CNT fibers could make strong interactions between Cu and CNT, enhancing the electrical and mechanical performance of CNT/Cu composites. This work proposes a convenient, heat-treatment-free strategy for high-performance CNT/Cu composite fibers, which can be manufactured for large-scale production and applied to next-generation conductive wires.
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