Thermoelectric textiles, constructed from thermoelectric materials and fabric, offer unique advantages compared to other types as they facilitate thermal energy harvesting from the human body and conform exceptionally well to dynamic body curves. This underscores their potential for on-body applications in electricity generation. In this investigation, we present a tellurium–free polymer-based textile thermoelectric prototype manufactured through a cost-effective method known as the solution drop-casting process. Two organic polymers, PEDOT:PSS and PVDF, are judiciously employed at optimized concentrations. At 300 K, the resulting PEDOT:PSS + PVDF/fabric thermoelectric film could exhibit an impressive output power factor of 60 nW/mK². The processed thermoelectric film could retain its electronic properties after 500 bending cycles, which confirms its extraordinarily flexible nature. When subjected to a temperature gradient of 35 K, the textile thermoelectric prototype could generate a noteworthy output voltage and power of 3.8 mV and 2.7 nW, respectively, at 300 K. Importantly, when in contact with a human wrist and subjected to a temperature difference of ∼3 K, the prototype produced a 0.2 mV output voltage, which is reliable. Above all, the prototype exhibited an outstanding output voltage of approximately 13 mV, when its cold-end and hot-end were at 236 and 277 K, respectively. This corroborated the compatibility and superior energy generation performance of the investigated textile thermoelectrics under cold environmental conditions. Our study emphasizes the feasibility of Te-free, nontoxic polymer-based textile thermoelectric fabric for power generation using the human body and other low-grade heat available below and at room temperature.

中文翻译：

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用于发电的聚合物注入纺织热电材料

由热电材料和织物制成的热电纺织品与其他类型相比具有独特的优势，因为它们有利于从人体收集热能，并且非常符合动态身体曲线。这凸显了它们在发电方面的人体应用潜力。在这项研究中，我们提出了一种无碲聚合物基纺织品热电原型，通过一种称为溶液滴铸工艺的经济有效的方法制造。两种有机聚合物 PEDOT:PSS 和 PVDF 均以最佳浓度明智地使用。在 300 K 时，所得的 PEDOT:PSS + PVDF/织物热电薄膜可表现出 60 nW/mK ²的令人印象深刻的输出功率因数。经过处理的热电薄膜在 500 次弯曲循环后仍能保持其电子特性，这证实了其非凡的柔韧性。当受到 35 K 的温度梯度时，纺织热电原型在 300 K 时可以产生值得注意的输出电压和功率，分别为 3.8 mV 和 2.7 nW。重要的是，当与人类手腕接触并受到温差时∼3 K，原型产生了 0.2 mV 的输出电压，这是可靠的。最重要的是，当其冷端和热端温度分别为 236 和 277 K 时，原型表现出约 13 mV 的出色输出电压。这证实了所研究的纺织热电材料在寒冷环境条件下的兼容性和卓越的发电性能。我们的研究强调了无碲、无毒聚合物基纺织热电织物利用人体和低于室温的其他低品位热量发电的可行性。