High-efficiency preparation of multifunctional conjugated electrospun graphene doped PVDF/CF yarns for energy harvesting and human movement monitoring in TENG textile  

作　　者：Ting Yang Chengwei Wan Xiaoyu Zhang Tong Liu Li Niu Jian Fang Yuqing Liu 

机构地区：[1]College of Textile and Clothing Engineering,Soochow University,Suzhou 215123,China

出　　处：《Nano Research》2024年第5期4478-4488,共11页纳米研究（英文版）

基　　金：support from National Natural Science Foundation of China(No.52173059);China National Textile and Apparel Council Science and Technology Guidance Project(No.2020116);the Key Research and Development Program of Jiangsu Province(No.21KJA540002);the Open Project of Tianjin Key Laboratory of Optoelectronic Detection Technology and System(No.2023LOTDS011).

摘　　要：Portable power is an effective solution to realize self-powered sensors for wearable devices,promoting future sustainable development.Membrane-based triboelectric nanogenerators(M-TENGs)have emerged as a promising technology for harvesting biomechanical energy from human motion owing to their advantages,such as simple structure,lightweight design,and efficient energy conversion.However,the poor durability,low adaptability,and un-washability of two-dimensional membrane materials have largely hindered their application in wearable electronics.In this study,we propose a sheath-core polyvinylidene fluoride(PVDF)/graphene(G)-carbon fiber(CF)yarn fabricated via conjugate electrospinning,comprising a commercial CF core and an electrospun graphene-doped PVDF sheath,which improves the fatigue resistance of electrospun nanofiber films under prolonged friction and keeps a high degree of freedom.The resulting electronic textile,woven with the large-scale electrospun PVDF/G-CF yarn,demonstrates a remarkable power density of 25.5 mW·m^(-2).The tight distribution of PVDF/G nanofibers on the textile surface ensures excellent softness,washability,and durability.Furthermore,the electrospun PVDF/G-CF textile exhibits significant potential in pressure sensing,self-powered operation,and motion detection,making it highly suitable for wearable electronics applications.

关 键 词：yarn-based triboelectric nanogenerator(TENG) GRAPHENE polyvinylidene fluoride(PVDF) conjugated-electrospinning MULTIFUNCTIONAL 

分 类 号：TQ127.11[化学工程—无机化工]