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Preparation of stable carbon nanotube aerogels with high electrical conductivity and porosity
Ist Teil von
Carbon (New York), 2011-06, Vol.49 (7), p.2352-2361
Ort / Verlag
Kidlington: Elsevier Ltd
Erscheinungsjahr
2011
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
Stable carbon nanotube (CNT) aerogels were produced by forming a three-dimensional assembly of CNTs in solution to create a stable gel using a chemical cross-linker, followed by a CO
2 supercritical drying. Thermal annealing of these aerogels in air can significantly improve their electrical and mechanical properties, and increase their surface area and porosity by re-opening the originally blocked micropores and small mesopores in the as-prepared CNT aerogels. Thermally annealed CNT aerogels are mechanically stable and stiff, highly porous (∼99%), and exhibit excellent electrical conductivity (∼1–2
S/cm) and large specific surface area (∼590–680
m
2/g).