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Electrically conductive composites via infiltration of single-walled carbon nanotube-based aerogels

Published online by Cambridge University Press:  01 February 2011

Marcus A Worsley
Affiliation:
worsley1@llnl.gov, Lawrence Livermore National Laboratory, Physical and Life Sciences Directorate, 7000 East Ave, Livermore, California, 94550, United States
Joshua D. Kuntz
Affiliation:
kuntz2@llnl.gov, Lawrence Livermore National Laboratory, Physical and Life Sciences Directorate, Livermore, California, United States
Sergei Kucheyev
Affiliation:
kucheyev@llnl.gov, United States
Alex V Hamza
Affiliation:
hamza1@llnl.gov, Lawrence Livermore National Laboratory, Physical and Life Sciences Directorate, Livermore, California, United States
Joe H Satcher
Affiliation:
satcher1@llnl.gov, Lawrence Livermore National Laboratory, Physical and Life Sciences Directorate, Livermore, California, United States
Theodore F Baumann
Affiliation:
baumann2@llnl.gov, Lawrence Livermore National Laboratory, Physical and Life Sciences Directorate, Livermore, California, United States
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Abstract

Many challenges remain in the effort to realize the exceptional properties of carbon nanotubes (CNT) in composite materials. Here, we report on electrically conductive composites fabricated via infiltration of CNT-based aerogels. The ultra low-density, high conductivity, and extraordinary robustness of the CNT aerogels make them ideal scaffolds around which to create conductive composites. Infiltrating the aerogels with various insulating materials (e.g. epoxy and silica) resulted in composites with electrical conductivities over 1 Scm-1 with as little as 1 vol% nanotube content. The electrical conductivity observed in the composites was remarkably close to that of the CNT scaffold in all cases.

Type
Research Article
Copyright
Copyright © Materials Research Society 2010

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