Journal
JOURNAL OF APPLIED PHYSICS
Volume 105, Issue 8, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3117491
Keywords
aerogels; carbon nanotubes; nanocomposites; nanotechnology; polymerisation; pyrolysis; scanning electron microscopy; sol-gel processing; surfactants; suspensions; thermal conductivity
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Funding
- U. S. Department of Energy by Lawrence Livermore National Laboratory [DE-AC52-07NA27344]
- DOE Office of Energy Efficiency and Renewable Energy
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We report thermal conductivity measurements of a carbon aerogel nanocomposite containing double-walled carbon nanotubes. The nanocomposites were prepared by the sol-gel polymerization of resorcinol with formaldehyde in aqueous suspension containing a surfactant-stabilized dispersion of double-walled carbon nanotubes. Subsequent drying and pyrolysis resulted in free-standing monolithic carbon aerogel nanocomposites with uniform dispersions of carbon nanotubes. The monoliths were characterized by high-resolution scanning electron microscopy and thermal conductivity measurements via the transient hot-wire method. Enhanced thermal conductivities were observed for carbon aerogel nanocomposites relative to pristine carbon aerogels. The details of these results are discussed in comparison with theory and literature.
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