期刊
NANO LETTERS
卷 8, 期 12, 页码 4428-4432出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl802345s
关键词
-
类别
资金
- Texas Engineering Experiment Station (TEES)
- National Science Foundation [CMMI-0644055]
Segregated-network carbon nanotube (CNT)-polymer composites were prepared, and their thermoelectric properties were measured as a function of CNT concentration at room temperature. This study shows that electrical conductivity can be dramatically increased by creating a network of CNTs in the composite, while the thermal conductivity and thermopower remain relatively insensitive to the filler concentration. This behavior results from thermally disconnected, but electrically connected, junctions in the nanotube network, which makes it feasible to tune the properties in favor of a higher thermoelectric figure of merit. With a CNT concentration of 20 wt%, these composites exhibit an electrical conductivity of 4800 S/m, thermal conductivity of 0.34 W/m.K and a thermoelectric figure of merit (ZT) greater than 0.006 at room temperature. This study suggests that polymeric thermoelectrics are possible and provides the basis for further development of lightweight, low-cost, and nontoxic polymer composites for thermoelectric applications in the future.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据