期刊
MATERIALS RESEARCH EXPRESS
卷 2, 期 9, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/2053-1591/2/9/095604
关键词
carbon nanotube; fiber; electrical conductivity
资金
- National Natural Science Foundation of China [51172122]
- Beijing Specific Nanoscience and Nanotechnology Project [Z121100001312002]
- Tsinghua University Initiative Scientific Research Program [20111080939]
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 x 10(6) sm(-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.
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