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Thermoelectric properties of porous multi-walled carbon nanotube/polyaniline core/shell nanocomposites

机译：多孔多壁碳纳米管/聚苯胺核/壳纳米复合材料的热电性能

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摘要

Porous polyaniline (PANI)-coated multi-walled carbon nanotube (MWNT) core/shell nanohybrids were fabricated through in situ polymerization and subsequently assembled into macroscopic composites. N _2 adsorption/desorption analysis indicated that the volume of nanopores increased significantly, which could make a significant contribution to phonon scattering. Thermal annealing was also carried out to improve the Seebeck coefficient of the as-produced nanocomposites. The optimal sample showed electrical conductivity of 14.1Scm ~1, a Seebeck coefficient of 79.8μV K ~1 and thermal conductivity of 0.27WmK ~1, resulting in a highest figure of merit (ZT) of 0.01 at a very low loading of MWNTs (<1wt%). These results will provide a potential direction to enhance thermoelectric performance of organic materials and also facilitate the application of organic materials in thermal energy harvesting or cooling.
机译：通过原位聚合制备多孔聚苯胺（PANI）涂层的多壁碳纳米管（MWNT）核/壳纳米杂化物，然后组装成宏观复合物。 N _2吸附/解吸分析表明，纳米孔的体积显着增加，这可能对声子散射起重要作用。还进行了热退火以改善所产生的纳米复合材料的塞贝克系数。最佳样品的电导率为14.1Scm〜1，塞贝克系数为79.8μVK〜1，热导率为0.27WmK〜1，因此在极低的MWNTs负载下，最高品质因数（ZT）为0.01（ <1wt％）。这些结果将为增强有机材料的热电性能提供潜在的方向，也将促进有机材料在热能收集或冷却中的应用。

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