To realize thermoelectric textiles that can convert body heat to electricity, fibers with excellent mechanical and thermoelectric properties are needed. Although poly(3,4‐ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) is among the most promising organic thermoelectric materials, reports that explore its use for thermoelectric fibers are all but absent. Herein, the mechanical and thermoelectric properties of wet‐spun PEDOT:PSS fibers are reported, and their use in energy‐harvesting textiles is discussed. Wet‐spinning into sulfuric acid results in water‐stable semicrystalline fibers with a Young's modulus of up to 1.9 GPa, an electrical conductivity of 830 S cm−1, and a thermoelectric power factor of 30 μV m−1 K−2. Stretching beyond the yield point as well as repeated tensile deformation and bending leave the electrical properties of these fibers almost unaffected. The mechanical robustness/durability and excellent underwater stability of semicrystalline PEDOT:PSS fibers, combined with a promising thermoelectric performance, opens up their use in practical energy‐harvesting textiles, as illustrated by an embroidered thermoelectric fabric module.

中文翻译：

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用于热电纺织品的坚固 PEDOT:PSS 湿纺纤维

为了实现能够将体热转化为电能的热电纺织品，需要具有优异机械和热电性能的纤维。尽管聚（3,4-亚乙基二氧噻吩）：聚（苯乙烯磺酸盐）（PEDOT：PSS）是最有前途的有机热电材料之一，但几乎没有探索其用于热电纤维的报道。本文报道了湿纺 PEDOT:PSS 纤维的机械和热电性能，并讨论了它们在能量收集纺织品中的应用。湿纺成硫酸导致水稳定的半结晶纤维具有高达 1.9 GPa 的杨氏模量、830 S cm-1 的电导率和 30 μV m-1 K-2 的热电功率因数。拉伸超过屈服点以及反复拉伸变形和弯曲使这些纤维的电性能几乎不受影响。半结晶 PEDOT:PSS 纤维的机械坚固性/耐久性和优异的水下稳定性，加上有希望的热电性能，开辟了它们在实际能量收集纺织品中的应用，如刺绣热电织物模块所示。