Thermal transporting properties of electrically conductive polyaniline films as organic thermoelectric materials
Thermal transporting properties of electrically conductive polyaniline films as organic thermoelectric materials
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DOI：
10.1023/a:1020612123826
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发表时间：
2002-01-01
影响因子：
4.4
通讯作者：
Toshima, N
中科院分区：
文献类型：
--
作者：
Yan, H;Sada, N;Toshima, N
首次研究了聚苯胺导电膜作为有机热电材料在室温以上较宽温度范围内的热传输特性。采用激光闪光法和差示扫描量热仪相结合的方法，测量了不同质子酸掺杂聚苯胺薄膜的热导率与电导率和掺杂剂的关系。测量的热导率在常规有机聚合物的范围内，表明掺杂聚苯胺膜在导电材料中具有极低的热导率，与电导率无关，也与一种掺杂剂无关。因此，聚苯胺膜表现出非常高的导电性，具有与可行的无机热电材料(如硅化铁)相当的热电优值(ZT)。
Thermal transporting properties of electrically conductive polyaniline films were first investigated in wide range of temperatures above room temperature as organic thermoelectric materials. Thermal conductivities of various protonic acid-doped polyaniline films were measured by combination of a laser flash method and a differential scanning calorimeter in relation with electrical conductivity and a kind of dopant. The thermal conductivities thus measured are in the range of conventional organic polymers, indicating that the doped polyaniline films have extremely low thermal conductivities among electrically conductive materials, and have correlation with neither electrical conductivity, nor a kind of dopant. Consequently the polyaniline film, which shows very high electrical conductivity, has comparable thermoelectric figure-of-merit (ZT) with feasible inorganic thermoelectric materials such as iron silicide.