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首页> 外文期刊>Journal of Materials Science >Flexible metal-free hybrid hydrogel thermoelectric fibers
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Flexible metal-free hybrid hydrogel thermoelectric fibers

机译：无柔性金属混合水凝胶热电纤维

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Highly conductive poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) fiber has been developed as a more promising candidate compared with bulk and film to achieve wearable thermoelectric energy harvesting. Single-walled carbon nanotubes (SWCNTs) with nanostructures are considered as an effective conductive filter for the further improvement in the thermoelectric (TE) performance of PEDOT:PSS fibers. However, the previous research primarily focused on PEDOT:PSS/SWCNT films instead of fibers. In this study, PEDOT:PSS/SWCNT hybrid fibers were synthesized via gelation process, which presents a 30% enhancement of the electrical conductivity with negligible changes in Seebeck coefficient. Moreover, there was a significant increase in the Young's modulus in accordance with the addition of an appropriate amount of SWCNTs. Thereafter, the as-prepared hybrid fibers were treated using ethylene glycol (EG) to further optimize the TE performance. Moreover, the influence of the treatment time and temperature was systematically investigated. The EG treatment resulted in a significant improvement in the electrical conductivity without a significant decrease in the Seebeck coefficient. Furthermore, the hybrid fibers were subject to EG treatment at elevated temperature, whose optimal power factor was approximately 30% higher than that of the EG-treated PEDOT:PSS/SWCNT fibers at 25 degrees C. This indicates that the solvent treatment at higher temperature improves the TE performance of hybrid fibers. The findings of this study can serve as a guide for the preparation of flexible and metal-free hybrid fiber with enhanced TE performance and Young's modulus.
机译：高导电性的聚（3,4-亚乙基）：聚（苯乙烯磺酸盐）（PEDOT：PSS）纤维已发展为更希望的候选与体积和膜，以实现可穿戴热电能量收集比较。单壁碳纳米管（单壁碳纳米管）与纳米结构被认为是用于在PEDOT的热电（TE）的性能的进一步提高的有效导电性滤波器：PSS纤维。然而，以往的研究主要集中在PEDOT：PSS / SWCNT电影，而不是纤维。在这项研究中，PEDOT：PSS / SWCNT混合纤维通过凝胶化过程中，合成了呈现与塞贝克系数可以忽略不计的变化的电导率的30％的增强一个。此外，有一个在杨氏模量的增加显著按照添加SWCNT的适当量的。此后，将所制备的混合纤维，使用乙二醇（EG），以进一步优化TE性能处理。此外，治疗时间和温度的影响进行了系统的研究。的EG处理导致的导电性的改善显著而不塞贝克系数一个显著降低。此外，该混合纤维经受EG处理在升高的温度下，其最佳功率因数大约比EG处理PEDOT的高30％：PSS / SWCNT纤维在25℃下这表明在较高的温度下的溶剂处理改善混合纤维的TE性能。本研究的结果可以用作用于制备柔性和不含金属的混合纤维的具有增强性能的TE和杨氏模量的引导。

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