Preparation of stable carbon nanotube aerogels with high electrical conductivity and porosity

被引：93

作者：

Kohlmeyer, Ryan R. ^{[1
]}

Lor, Maika ^{[1
]}

Deng, Jian ^{[1
]}

Liu, Haiying ^{[2
]}

Chen, Jian ^{[1
]}

机构：

[1] Univ Wisconsin, Dept Chem & Biochem, Milwaukee, WI 53211 USA

[2] Michigan Technol Univ, Dept Chem, Houghton, MI 49931 USA

来源：

CARBON | 2011年 / 49卷 / 07期

基金：

美国国家科学基金会;

关键词：

POLYMER; ORGANOGELS; DISPERSION; CHEMISTRY; HYDROGELS;

D O I：

10.1016/j.carbon.2011.02.001

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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 CO2 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 (similar to 99%), and exhibit excellent electrical conductivity (similar to 1-2 S/cm) and large specific surface area (similar to 590-680 m(2)/g). (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：2352 / 2361

页数：10

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