Fabrication of highly conductive carbon nanotube fibers for electrical application
Fabrication of highly conductive carbon nanotube fibers for electrical application
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用于电气应用的高导电碳纳米管纤维的制造
DOI：
10.1088/2053-1591/2/9/095604
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发表时间：
2015-09-01
影响因子：
2.3
通讯作者：
Wu, Dehai
中科院分区：
文献类型：
--
作者：
Guo, Fengmei;Li, Can;Wu, Dehai
碳纳米管具有优异的电学和力学性能，在电线方面具有巨大的应用潜力。在这里，我们制造轻质CNT纤维与导电性高达不锈钢从宏观CNT薄膜通过金刚石拉丝模具绘制它们。缠结的CNT束通过经受张力而变直，这改善了纤维的排列。金刚石拉丝模挤压松散的纤维，减小了管间间隙，减小了接触电阻。通过拉伸制备的CNT纤维具有高达1.6 × 106 s m-1的电导率。该纤维在空气中和循环拉伸试验中非常稳定。通过用碳纳米管纤维代替铜导线，展示了碳纳米管电机的原型。
Carbon nanotubes (CNTs) have great potential for use as electrical wires because of their outstanding electrical and mechanical properties. Here, we fabricate lightweight CNT fibers with electrical conductivity as high as that of stainless steel from macroscopic CNT films by drawing them through diamond wire-drawing dies. The entangled CNT bundles are straightened by suffering tension, which improves the alignment of the fibers. The loose fibers are squeezed by the diamond wire-drawing dies, which reduces the intertube space and contact resistance. The CNT fibers prepared by drawing have an electrical conductivity as high as 1.6 × 106 s m−1. The fibers are very stable when kept in the air and under cyclic tensile test. A prototype of CNT motor is demonstrated by replacing the copper wires with the CNT fibers.