Chemical Method for Improving Both the Electrical Conductivity and Mechanical Properties of Carbon Nanotube Yarn via Intramolecular Cross-Dehydrogenative Coupling

Title
Chemical Method for Improving Both the Electrical Conductivity and Mechanical Properties of Carbon Nanotube Yarn via Intramolecular Cross-Dehydrogenative Coupling
Authors
최용문추헌고여현욱유남호이동수구본철김환철봉필훈정영진고문주
Keywords
CNT yarn; healing; tensile strength; electrical conductivity; carbon nanotube fiber; FeCl3; intramolecular cross-dehydrogenative coupling
Issue Date
2013-08
Publisher
ACS Applied Materials & Interfaces
Citation
VOL 5, 7726-7730
Abstract
Chemical post-treatment of the carbon nanotube fiber (CNTF) was carried out via intramolecular cross-dehydrogenative coupling (ICDC) with FeCl3 at room temperature. The Raman intensity ratio of the G band to the D band (IG/ID ratio) of CNT fiber increased from 2.3 to 4.6 after ICDC reaction. From the XPS measurements, the AC=C/AC−C ratio of the CNT fiber increased from 3.6 to 4.8. It is of keen interest that both the electrical conductivity and tensile strength of CNT yarn improved to 3.5 × 103 S/cm and 420 MPa, which is 180 and 200% higher than that of neat CNT yarn.
URI
http://pubs.kist.re.kr/handle/201004/45790
ISSN
19448244
Appears in Collections:
KIST Publication > Article
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