Carbon-nanotube cotton for large-scale fibers

Lianxi Zheng, Xiefei Zhang, Qingwen Li, Satishkumar B. Chikkannanavar, Yuan Li, Yonghao Zhao, Xiaozhou Liao, Quanxi Jia, Stephen K. Doom, Dean E. Peterson, Yuntian Zhu

Research output: Contribution to journalArticlepeer-review

64 Scopus citations


A new form of carbon nanotube (CNT) material, CNT cotton, made of ultralong individual CNTs for large-scale fibers were analyzed. Catalytic chemical vapor deposition was used to synthesize the CNT cotton. The catalyst precursor solution was prepared by dissolving CoCl3 and FeCl3 in ethanol to reach a concentration of 0.05M Co + 0.05M Fe. This solution was then applied to one edge of a Si substrate that had a 0.1μm thick SiO2 layer on its surface. The Si substrate on which the catalyst was applied after removing the topmost CNT cotton was examined under SEM to understand the growth mechanism. The CNT cotton was spun into fibers using a spinning set-up built in-house. The CNTs did not show any fracture during tensile test, suggesting that the strength of CNT fibers can be further increased by optimizing the structural arrangements of CNTs in the fiber. Results show that this form of CNT material has great potential for large-scale fiber production.

Original languageBritish English
Pages (from-to)2567-2570
Number of pages4
JournalAdvanced Materials
Issue number18
StatePublished - 17 Sep 2007


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