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Mechanical and Thermal Management Characteristics of Ultrahigh Surface Area Single‐Walled Carbon Nanotube Aerogels
Author(s) -
Kim Kyu Hun,
Oh Youngseok,
Islam Mohammad F.
Publication year - 2013
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201201055
Subject(s) - materials science , carbon nanotube , aerogel , porosity , thermal conductivity , specific surface area , composite material , thermal , heat transfer , characterization (materials science) , carbon fibers , nanotechnology , composite number , catalysis , thermodynamics , biochemistry , chemistry , physics
Lightweight aerogels with large specific surface area (SSA) have numerous applications. Free‐standing aerogels are created from single‐walled carbon nanotubes (SWCNTs), and their SSA and pore characteristics, electrical conductivity, mechanical properties, and thermal management attributes are determined. The SSA of the aerogels is extraordinarily high and approaches 1291 m 2 g −1 at a density of 7.3 mg mL −1 , which is close to the theoretical limit (≈1315 m 2 g −1 ). Mechanical characterization shows that these aerogels have open‐cell structures and their Young's moduli are higher than other aerogels at comparable density. The aerogels also enhance heat transfer in a forced convective process by ≈85%, presumably due to their large porosity and surface area.