Simultaneous Evaporation and Foaming for Batch Coaxial Extrusion of Liquid Metal/Polydimethylsiloxane Porous Fibrous TENG  

作　　者：Xinghao Zhang Jiawen Xu Xiaomei Zhang Guojie Chao Qixin Cao Tianxi Liu Yu Liu 

机构地区：[1]Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment,School of Mechanical Engineering,Jiangnan University,Wuxi 214122,People’s Republic of China [2]Key Laboratory of Synthetic and Biological Colloids Ministry of Education,School of Chemical and Material Engineering,Jiangnan University,Wuxi 214122,People’s Republic of China

出　　处：《Advanced Fiber Materials》2023年第6期1949-1962,共14页先进纤维材料（英文）

基　　金：the National Natural Science Foundation of China(Grant No.51875253);Jiangsu Provincial Key Research and Development Program(BE2022069-2);the Postgraduate Research and Practice Innovation Program of Jiangsu Province(KYCX23_2434,KYCX20_1830).

摘　　要：The utilization of textile-based triboelectric nanogenerators(t-TENGs)offers great potential for providing sustainable and wearable power.Nevertheless,the current designs of t-TENGs present limitations in terms of low electrical outputs and less developed,straightforward batch processing techniques.Herein,a facile bottom-up foaming-combined coaxial extrusion method is developed for the massive fabrication of liquid metal/polydimethylsiloxane(PDMS)core–shell porous fibrous TENG,which can be directly woven to form t-TENGs.Ink designs are studied for high-fidelity fibrous TENG manufacturing and porosity-controlled micropore formation.Furthermore,porous fibrous TENGs are applied to integrate different woven structures,and the electrical and mechanical performances of the t-TENGs are optimized.Compared with plain surface fibrous TENG,the porous fibrous TENG achieves a~fivefold improvement in the open-circuit voltage(V_(OC))and a~sevenfold improvement in the short-circuit current(I_(SC)).These outcomes indicate that we can prepare a range of polymers for t-TENGs with enhanced output performance even though they do not demonstrate great triboelectrification.This work also demonstrates successful integration for sustainably powering miniature electronics.These results can contribute to human motion energy harvesting for wearable self-powered sensors.

关 键 词：Triboelectric nanogenerators Coaxial fibers Porous surface Self-powered sensors 

分 类 号：TB31[一般工业技术—材料科学与工程]