Wearable electronics have emerged as a promising research field, generating considerable interest in exploring the high stretchability and electrical sensitivity of flexible conducting materials. This work proposes a novel, eco-friendly technique to continuously produce self-helical conductive PEDOT:PSS fibers. The resultant fibers reveal a high breaking tensile elongation (>950%), superior electrical conductivity (650 S cm−1), and remarkable elasticity even when deformed by up to 400%. The morphology and performance of self-helical fibers can be optimized by tuning the metal salt concentrations in the coagulation bath, spinning speeds, and needle inner diameter. Additionally, finite element software (Ansys) was used to model the fibers under stress. The optimal fibers spun from the coagulation bath made of 20 vol% phosphoric acid aqueous solution with 0.05 M magnesium chloride were selected as a sensing unit. These fibers possess excellent sensitivity and cycle stability over a broad range of operations, making them suitable for accessible human–computer interfaces and next-generation flexible electronics.
Organic thermoelectric fibers have great potential as wearable thermoelectric textiles because of their one-dimensional structure and high flexibility. However, the insufficient thermoelectric performance, high fabrication cost, and mechanical fragility of most organic thermoelectric fibers significantly limit their practical applications. Here, we employ a rapid and cost-effective wet-spinning method to prepare dimethyl sulfoxide-doped poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) fiber bundles, followed by rational post-treatment with concentrated sulfuric acid (98% H 2 SO 4 ) to enhance their thermoelectric performance. The wearable fiber bundles composed of multiple individual PEDOT:PSS fibers have effectively reduced resistance and overall high tensile strength and stability. Rational treatment with H 2 SO 4 partially removes excessive PSS, thereby increasing the electrical conductivity to 4464 S cm ‒1 , while the parallel bundle is also a major factor in improving the power factor of up to 80.8 μW m ‒1 K ‒2 , which is super-competitive compared with those of currently published studies. Besides, the thermoelectric device based on these fiber bundles exhibits high flexibility and promising output power of 2.25 nW at a temperature difference of 25 K. Our work provides insights into the fabrication of all-organic flexible high-conductivity textiles with high thermoelectric properties. Graphical
Luxin Li,Jiansong Luo,Wenxi Liao,Jiajia Deng,Ting Wang,Yanyan Huang,Jianming Deng,Huang Zhou,Yuxin Yang
Water and energy are indispensable pillars of human civilization, yet both face mounting challenges due to population growth, climate change, and environmental degradation. Enhancing the efficiency of water and energy systems and reducing their environmental impact are thus critical to achieving a low-carbon, water-secure future. This study introduces a novel, scalable and adjustable water-electricity coproduction fabric (PP-WECF) developed via an accessible shuttle-flying weaving technique. The PP-WECF integrates PEDOT:PSS fibers, which serve as a transpiration-driven electrokinetic power generator, with hydrophilic fibers that channel water, and PANI fibers that enable solar-driven steam generation. The integration of PEDOT:PSS fibers and PANI fibers for PP-WECF facilitates sustainable operation and synergistic energy utilization. Furthermore, our results demonstrate that solar illumination of 1 kW·m −2 , the PP-WECF shows an efficient, self-operating, and sustainable output of 1.1 V, 116.0 μA, and 1.6 kg·m −2 ·h −1 in 3.5 wt% NaCl solution. The scalable, prolonged, and adaptable outdoor operation throughout the daytime ensures the clean production of electricity and freshwater.
危险品化学品经营许可证（带存储）