Lightweight Copper–Carbon Nanotube Core–Shell Composite Fiber for Power Cable Application
Lightweight Copper–Carbon Nanotube Core–Shell Composite Fiber for Power Cable Application
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DOI：
10.3390/c9020043
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发表时间：
2023-04
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通讯作者：
Kavitha Mulackampilly Joseph;Kyle Brittingham;Vamsi Krishna Reddy Kondapalli;Mahnoosh Khosravifar;Ayush Arun Raut;Brett David Karsten;Hunter J. Kasparian;Nhat-Truong Phan;A. Kamath;A. Almansour;M. Lizcano;D. Santiago;D. Mast;V. Shanov
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作者：
Kavitha Mulackampilly Joseph;Kyle Brittingham;Vamsi Krishna Reddy Kondapalli;Mahnoosh Khosravifar;Ayush Arun Raut;Brett David Karsten;Hunter J. Kasparian;Nhat-Truong Phan;A. Kamath;A. Almansour;M. Lizcano;D. Santiago;D. Mast;V. Shanov
用轻质铜-碳纳米管（Cu-CNT）复合纤维替代传统的铜输电电缆对于减轻汽车和飞机的重量、燃料消耗和二氧化碳排放至关重要。这种替代还将降低铜缆的传输功率损耗，从而减少煤炭和天然气的消耗，并最终减少碳足迹。在这项工作中，我们通过多步骤可扩展的过程，包括纺丝，致密化，功能化和双层铜沉积，创建了一个轻量级的Cu-CNT复合纤维。所制造的纤维的表征和测试包括表面形态、导电性、机械强度、结晶度和载流量（电流密度）。测得所得复合纤维的电导率为0.5 × 106 S/m，载流量为0.18 × 105 A/cm 2。铜包覆的CNT纤维比铜线轻16倍，强度为2.7倍，因为它们的重量密度为0.4 g/cm 3，机械强度为0.68 GPa，这表明在未来作为轻质输电电缆的应用中具有巨大的潜力。
The substitution of traditional copper power transmission cables with lightweight copper–carbon nanotube (Cu–CNT) composite fibers is critical for reducing the weight, fuel consumption, and CO2 emissions of automobiles and aircrafts. Such a replacement will also allow for lowering the transmission power loss in copper cables resulting in a decrease in coal and gas consumption, and ultimately diminishing the carbon footprint. In this work, we created a lightweight Cu–CNT composite fiber through a multistep scalable process, including spinning, densification, functionalization, and double-layer copper deposition. The characterization and testing of the fabricated fiber included surface morphology, electrical conductivity, mechanical strength, crystallinity, and ampacity (current density). The electrical conductivity of the resultant composite fiber was measured to be 0.5 × 106 S/m with an ampacity of 0.18 × 105 A/cm2. The copper-coated CNT fibers were 16 times lighter and 2.7 times stronger than copper wire, as they revealed a gravimetric density of 0.4 g/cm3 and a mechanical strength of 0.68 GPa, suggesting a great potential in future applications as lightweight power transmission cables.