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Single-Walled Carbon Nanotube/Copper Core–Shell Fibers with a High Specific Electrical Conductivity
ACS Nano ( IF 15.8 ) Pub Date : 2023-05-02 , DOI: 10.1021/acsnano.3c00488 LeLe Xu 1, 2 , XinYu Jiao 1, 2 , Chao Shi 1 , An-Ping Wu 1 , Peng-Xiang Hou 1, 2 , Chang Liu 1, 2 , Hui-Ming Cheng 1, 3
ACS Nano ( IF 15.8 ) Pub Date : 2023-05-02 , DOI: 10.1021/acsnano.3c00488 LeLe Xu 1, 2 , XinYu Jiao 1, 2 , Chao Shi 1 , An-Ping Wu 1 , Peng-Xiang Hou 1, 2 , Chang Liu 1, 2 , Hui-Ming Cheng 1, 3
Affiliation
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Carbon nanotube (CNT)/Cu core–shell fibers are a promising material for lightweight conductors due to their higher conductivity than pure CNT fibers and lower density than traditional Cu wires. However, the electrical properties of the hybrid fiber have been unsatisfactory, mainly because of the weak CNT–Cu interfacial interaction. Here we report the fabrication of a single-walled CNT (SWCNT)/Cu core–shell fiber that outperforms commercial Cu wires in terms of specific electrical conductivity and current carrying capacity. A dense and uniform Cu shell was coated on the surface of wet-spun SWCNT fibers using a combination of magnetron sputtering and electrochemical deposition. Our SWCNT/Cu core–shell fibers had an ultrahigh specific electrical conductivity of (1.01 ± 0.04) × 104 S m2 kg–1, 56% higher than Cu. Experimental and simulation results show that oxygen-containing functional groups on the surface of a wet-spun SWCNT fiber interact with the sputtered Cu atoms to produce strong bonding. Our hybrid fiber preserved its integrity and conductivity well after more than 5000 bending cycles. Furthermore, the current carrying capacity of the coaxial fiber reached 3.14 × 105 A cm–2, three times that of commercial Cu wires.
中文翻译：
具有高比电导率的单壁碳纳米管/铜核壳纤维
碳纳米管 (CNT)/Cu 核壳纤维是一种很有前途的轻质导体材料，因为它们比纯 CNT 纤维具有更高的导电率，并且比传统的 Cu 线具有更低的密度。然而，混合纤维的电性能并不令人满意，这主要是因为 CNT-Cu 界面相互作用较弱。在这里，我们报告了单壁碳纳米管 (SWCNT)/铜核壳纤维的制造，它在比电导率和载流能力方面优于商用铜线。使用磁控溅射和电化学沉积相结合的方法，在湿纺 SWCNT 纤维的表面涂覆致密均匀的 Cu 壳。我们的 SWCNT/Cu 核壳纤维具有 (1.01 ± 0.04) × 10 4 S m 2的超高比电导率kg –1 , 比Cu高56%。实验和模拟结果表明，湿纺 SWCNT 纤维表面的含氧官能团与溅射的 Cu 原子相互作用，产生强键合。我们的混合纤维在 5000 多次弯曲循环后仍能很好地保持其完整性和导电性。此外，同轴光纤的载流能力达到3.14×10 5 A cm –2，是商用铜线的三倍。
更新日期：2023-05-02
中文翻译：
具有高比电导率的单壁碳纳米管/铜核壳纤维
碳纳米管 (CNT)/Cu 核壳纤维是一种很有前途的轻质导体材料，因为它们比纯 CNT 纤维具有更高的导电率，并且比传统的 Cu 线具有更低的密度。然而，混合纤维的电性能并不令人满意，这主要是因为 CNT-Cu 界面相互作用较弱。在这里，我们报告了单壁碳纳米管 (SWCNT)/铜核壳纤维的制造，它在比电导率和载流能力方面优于商用铜线。使用磁控溅射和电化学沉积相结合的方法，在湿纺 SWCNT 纤维的表面涂覆致密均匀的 Cu 壳。我们的 SWCNT/Cu 核壳纤维具有 (1.01 ± 0.04) × 10 4 S m 2的超高比电导率kg –1 , 比Cu高56%。实验和模拟结果表明，湿纺 SWCNT 纤维表面的含氧官能团与溅射的 Cu 原子相互作用，产生强键合。我们的混合纤维在 5000 多次弯曲循环后仍能很好地保持其完整性和导电性。此外，同轴光纤的载流能力达到3.14×10 5 A cm –2，是商用铜线的三倍。
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