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DOC-Stabilized PVAc/MWCNTs Composites for Higher Thermoelectric Performance

机译:DOC稳定的PVAC / MWCNTS复合材料,用于更高的热电性能

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Novel technologies of energy generation are being developed nowadays to keep pace with the increasing energy crisis. Thermoelectric materials have the capability of harvesting waste heat and efficiently converting into useful electrical current. In this work, a commercial polymer is developed to be adopted for thermal electrical energy conversion. Low thermal conductivity Polyvinyl Acetate is used to host multi-walled carbon nanotubes (MWNTs) with different weight percentages (10-70) wt% with the addition of semiconducting Sodium Deoxycholate (DOC) as a nanofiller stabilizer. DOC was found to have a dual role in improving the dispersion of the nanotubes and stabilizing the composite, and hence resulting in higher thermoelectric performance. The composite with 70 wt% MWNTs showed the highest electrical conductivity of 171.7 S/m at 100°C while the 50 wt% composite recorded the greatest power factor of 0.008 μW/mK~2 at the same temperature.
机译:现在正在开发新的能源生成技术,以便与越来越多的能源危机保持同步。热电材料具有收获废热的能力,有效地转化为有用的电流。在这项工作中,开发了一种商业聚合物以用于热电能转换。低热导流聚乙烯酯用于宿主的多壁碳纳米管(MWNT),其用不同重量百分比(10-70)重量%(10-70)重量%,加入半导体脱氧胆酸钠(DOC)作为纳米填料稳定剂。发现DOC在改善纳米管的分散并稳定复合材料方面具有双重作用,因此导致热电性能较高。具有70wt%MWNT的复合材料在100℃下显示出171.7 s / m的最高电导率,而50wt%复合材料在相同温度下记录了0.008μw/ mk〜2的最大功率因数。

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