Hybrid tribo/piezoelectric nanogenerator textile derived from 3D interlocked parallel-arranged yarns for bio-motion energy harvesting and tactile sensing

• Published in: Chemical engineering journal (Lausanne, Switzerland : 1996) Switzerland : 1996), 2023-10, Vol.474, p.145866, Article 145866
• Main Authors: Liu, Lin, Li, Yuantao, Xu, Muchun, Tao, Rui, Zhong, Qiao, Yang, Xi, Lan, Shixia, Xie, Jiyang, Chen, Guo, Mao, Yongyun, Hu, Wanbiao
• Format: Article
• Language: English
• Subjects: Bio-motion energy harvesting; Tactile sensing; Textile; tribo/piezoelectric nanogenerator (HNG); Wearable device; Yarns
• ISSN: 1385-8947; 1873-3212
• DOI: 10.1016/j.cej.2023.145866

[Display omitted] •Trinary-yarn-interlocked tribo/piezoelectric nanogenerator (HNG) is developed.•The HNG is constructed via knitting PTFE around BaTiO3/PDMS and AgNW/PDMS yarns.•The HNG exhibits a remarkable output voltage and power density.•This HNG marks breakthrough in harvesting biomechanical and deformation energy. Hybrid tribo/piezoelectric nanogenerator (HNG) is increasingly attracting the extensive attention because of the functional applications e.g. self-powered sensors and bio-motion energy harvesting etc. Although planar HNGs, the most studied currently, boast unrivaled output performances and structural simplicity, their coherent shortcoming e.g. flat/planar configurations still fall short for wearable electronics. To this end, a 3D trinary-yarn-interlocked HNG textile through knitting PTFE yarn around parallel-constructed two functional elastomer yarns i.e. piezoelectric BaTiO3/PDMS and triboelectric AgNW/PDMS has been developed. The resulting HNG textile demonstrates an exceptional biomechanical energy harvesting capability with generating a maximum peak power density of 91.6 mW m−2, which several-fold surpasses to the current 2D TENG textiles. The HNG textile can also response sensitively the various external mechanical stimulations by converting different forms of the bio-motion energy (e.g. biomechanical and deformation energy) into electrical signals. What’s more, the collected power from the biomechanical/motion energy can sustainably charge commercial capacitors and power LED lights, with achieving a maximum output voltage of approximately 400 V. Most importantly, such a versatile all-in-one HNG possesses the highly structural durability, stability, and reliability during working, which promisingly offers continued bio-motion energy harvesting and enables exerting self-powered wearable sensing devices. This research presents an innovative approach to develop multifunctional, self-powered wearable textiles with high electrical performance, sturdy mechanical characteristics that demonstrate the potentially industrial applications in wearable tech aspects.