Electrospinning Machine | A Scalable Core-Sheath Yarn for Transforming Wool Static Nuisance Into Usable Energy for Wearable Electronics

Challenge: Wool fibers, commonly used in autumn and winter clothing, are prone to generate static electricity, causing wearer discomfort and safety issues, while traditional anti-static solutions have limited effect. 

Method: Professor Qin Xiaohong and Professor Wang Rongwu from Donghua University collaborated to develop a core-sheath structured yarn (CSY) with a conductive PET filament as the core and wool yarn as the sheath, using industrial hollow spindle spinning technology for continuous production at a speed of ≈6 meters/minute, achieving the conversion of wool's static interference into triboelectric energy. 

Innovation 1: CSY knitted fabric (CSYF) can simultaneously achieve an excellent static elimination half-life (≈0.21 s) and efficient energy conversion (≈430 V, ≈2.7µA, 2Hz). 

Innovation 2: CSYF has good dyeability, high flexibility (≈200% stretchability), and exceptional output power (≈740 mW m⁻²), surpassing most yarn-based triboelectric textiles, demonstrating potential applications in power sources and self-powered sensing.

 https://doi.org/10.1002/adma.202508147