Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 6, Issue 13, Pages 9966-9974Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am5019995
Keywords
carbon nanotube fibers; carbon nanotube thin films; conductive polymer composites; PEDOT; solution processing; carbon nanotube alignment
Funding
- Center for Advanced Molecular Photovoltaics (CAMP)
- Global Climate and Energy Project (GCEP) at Stanford University
- Stanford Graduate Fellowship
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Single-walled carbon nanotubes/polymer composites typically have limited conductivity due to a low concentration of nanotubes and the insulating nature pm, of the polymers used. Here we combined a method to align carbon nanotubes with in-situ polymerization of conductive polymer to form composite films and fibers. Use of the conducting polymer raised the conductivity of the films by 2 orders of magnitude. On the other hand, CNT fiber formation was made possible with in-situ polymerization to provide more mechanical support to the CNTs from the formed conducting polymer. The carbon nanotube/conductive polymer composite films and fibers had conductivities of 3300 and 170 S/cm, respectively. The relatively high conductivities were attributed to the polymerization process, which doped both the SWNTs and the polymer. In-situ polymerization can be a promising solution-processable method to enhance the conductivity of carbon nanotube films and fibers.
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