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首页> 外文期刊>Carbon: An International Journal Sponsored by the American Carbon Society >Simultaneous enhancement of electrical conductivity and seebeck coefficient in organic thermoelectric SWNT/PEDOT:PSS nanocomposites
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Simultaneous enhancement of electrical conductivity and seebeck coefficient in organic thermoelectric SWNT/PEDOT:PSS nanocomposites

机译：有机热电SWNT / PEDOT中的电导率和塞贝克系数的同时提高：PSS纳米复合材料

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摘要

High electrical conductivity and high Seebeck coefficient are the two important prerequisites for achieving high power factor in organic thermoelectric (TE) materials. However, these two properties are quite often in conflict. In this work, we demonstrate that incorporating CNT in a conducting polymer PEDOT:PSS could facilitate the formation of stable and effective conductive channels, which provides an effective approach to optimize the TE parameters with simultaneously enhanced electrical conductivity and Seebeck coefficient against the initial organic TE materials. With further tailoring charge concentration of the SWNT/PEDOT: PSS composite by base treatment, the TE performance could be improved. Nanocomposite of 60 wt% SWNT and PEDOT:PSS exhibits high TE power factor of similar to 526 mu W m(-1) K-2 with Seebeck coefficient of 55.6 mu V K-1 and electrical conductivity of 1701 S cm(-1), which is by far one of the highest power factors among the reported organic TE nanocomposites. Considering thermal conductivity around 0.4-0.6 W/m K, the highest estimated ZT value of our TE nanocomposite can approach 0.39, demonstrating the feasibility of this strategy to enhance TE performance of organic composite materials. (C) 2019 Published by Elsevier Ltd.
机译：高导电性和高塞贝克系数是实现有机热电（TE）材料中的高功率因数的两个重要前提条件。但是，这两个性质通常在冲突中。在这项工作中，我们证明将CNT纳入导电聚合物PEDOT：PSS可以促进形成稳定且有效的导电通道，这提供了优化TE参数的有效方法，同时增强了初始有机TE的电导率和塞贝克系数。材料。随着SWNT / PEDOT的进一步剪裁充电浓度：PSS复合材料通过基础处理，可以提高TE性能。 60wt％SWNT和PEDOT的纳米复合材料：PSS具有高TE功率因数，类似于526μm（-1）k-2，塞匹克系数为55.6μmVk-1和1701 s cm（-1）的电导率，这是报告的有机TE纳米复合材料中的最高功率因子之一。考虑到热导率约0.4-0.6W / m K，我们的TE纳米复合材料的最高估计ZT值可以接近0.39，表明该策略提高了有机复合材料的TE性能的可行性。 （c）2019年由elestvier有限公司出版

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