Superlow Thermal Conductivity 3D Carbon Nanotube Network for Thermoelectric Applications
Superlow Thermal Conductivity 3D Carbon Nanotube Network for Thermoelectric Applications
复制标题
用于热电应用的超低导热率 3D 碳纳米管网络
DOI：
10.1021/am201330f
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发表时间：
2012-01-01
影响因子：
9.5
通讯作者：
Chen, Lidong
中科院分区：
文献类型：
--
作者：
Chen, Jikun;Gui, Xuchun;Chen, Lidong
系统地研究了一种新型结构的三维碳纳米管网络的电输运和热输运性质。3D CNT网络在室温下在标准气氛中保持极低的热导率，仅为0.035 W/（m K），这与其他报道的CNT宏观结构相比是最低的。其电输运可以通过方便的气体发烟掺杂工艺进行调节。通过钾（K）掺杂，原始的p型CNT网络转变为n型，而碘（I-2）掺杂增强了其导电性。所制备的3D CNT网络的自维持均匀网络结构使其成为聚合物组合物的有希望的候选模板。通过原位纳米复合聚苯胺（PANI），在保持三维碳纳米管自支撑柔性结构的同时，显著提高了PANI的热电性能。希望所制备的三维碳纳米管网络能为低成本有机热电领域的发展做出贡献。
Electrical and thermal transportation properties of a novel structured 3D CNT network have been systematically investigated. The 3D CNT net work maintains extremely low thermal conductivity of only 0.035 W/(m K) in standard atmosphere at room temperature, which is among the lowest compared with other reported CNT macrostructures. Its electrical transportation could be adjusted through a convenient gas-fuming doping process. By potassium (K) doping, the original p-type CNT network converted to n-type, whereas iodine (I-2) doping enhanced its electrical conductivity. The self-sustainable homogeneous network structure of as-fabricated 3D CNT network made it a promising candidate as the template for polymer composition. By in situ nanoscaled composition of 3D CNT network with polyaniline (PANI), the thermoelectric performance of PANI was significantly improved, while the self-sustainable and flexible structure of the 3D CNT network has been retained. It is hoped that as-fabricated 3D CNT network will contribute to the development of low-cost organic thermoelectric area.