Journal
APPLIED PHYSICS LETTERS
Volume 94, Issue 7, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3086293
Keywords
carbon nanotubes; elasticity; electrical conductivity; foams; nanofabrication; nanoparticles; nanoporous materials
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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 describe the fabrication of ultralow-density carbon nanotube (CNT) foams that simultaneously exhibit high electrical conductivities and robust mechanical properties. Our approach utilizes carbon nanoparticles as a binder to crosslink randomly oriented bundles of single-walled CNTs. The resulting CNT foams are the stiffest low-density nanoporous solids reported and exhibit elastic behavior up to strains as large as similar to 80%. The use of the carbon binder also allows bulk electrical conductivity to be maintained at low densities.
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