Guo Lei, Li Huifang, Liu Dandan, Zhou Yurong, Dong Lizhong, Zhu Siqi, Wu Yulong, Yong Zhenzhong, Kang Lixing, Jin Hehua, Li Qingwen
School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei 230026, People's Republic of China.
Key Laboratory of Multifunctional Nanomaterials and Smart Systems, Advanced Materials Division, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, People's Republic of China.
Nanotechnology. 2022 Apr 22;33(28). doi: 10.1088/1361-6528/ac652b.
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 Oplasma 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.
碳纳米管（CNT）/铜（Cu）复合纤维作为下一代轻质导电电线备受期待。然而，其电学和力学性能仍有待提高。在此，我们展示了一种在硫醇化碳纳米管纤维上电沉积铜的策略，以应对提高碳纳米管/铜复合纤维性能这一重大挑战。通过可控的氧等离子体羧基化过程和酰胺反应，将硫醇基团引入到碳纳米管纤维表面。与碳纳米管/铜复合纤维相比，界面硫醇改性复合纤维的电导率和拉伸强度分别提高了82.7%和29.6%。还探讨了增强机制，即硫醇化碳纳米管纤维可使铜与碳纳米管之间产生强相互作用，从而提高碳纳米管/铜复合材料的电学和力学性能。这项工作为高性能碳纳米管/铜复合纤维提出了一种便捷、无需热处理的策略，该策略可用于大规模生产，并应用于下一代导电电线。
