An ultra-thin piezoelectric nanogenerator with breathable,superhydrophobic,and antibacterial properties for human motion monitoring  

作　　者：Wei Fan Cong Zhang Yang Liu Shujuan Wang Kai Dong Yi Li Fan Wu Junhao Liang Chunlan Wang Yingying Zhang 

机构地区：[1]School of Textile Science and Engineering,Key Laboratory of Functional Textile Material and Product of the Ministry of Education,Xi’an Polytechnic University,Xi’an 710048,China [2]Department of Chemistry,Tsinghua University,Beijing 100084,China [3]School of Chemistry,Xi’an Jiaotong University,Xi’an 710049,China [4]Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of Sciences,Beijing 100083,China [5]Department of Materials,University of Manchester,Manchester,M139PL,UK

出　　处：《Nano Research》2023年第9期11612-11620,共9页纳米研究（英文版）

基　　金：The authors acknowledge the financial support from the National Natural Science Foundation of China(No.52073224);Textile Vision Basic Research Program of China(No.J202110);Advanced manufacturing technology project of Xi’an Science and Technology Bureau,China(21XJZZ0019);Scientific Research Project of Shaanxi Provincial Education Department,China(No.22JC035);Key Research and Development Program of Xianyang Science and Technology Bureau,China(No.2021ZDYF-GY-0035);Research Fund for the Doctoral Program of Xi’an Polytechnic University(No.BS202006).

摘　　要：Piezoelectric nanogenerators(PENGs)are promising for harvesting renewable and abundant mechanical energy with high efficiency.Up to now,published research studies have mainly focused on increasing the sensitivity and output of PENGs.The technical challenges in relation to practicability,comfort,and antibacterial performance,which are critically important for wearable applications,have not been well addressed.To overcome the limitations,we developed an all-nanofiber PENG(ANF-PENG)with a sandwich structure,in which the middle poly(vinylidene fluoride-co-hexafluoropropylene(P(VDF-HFP))/ZnO electrospun nanofibers serve as the piezoelectric layer,and the above and below electrostatic direct-writing P(VDF-HFP)/ZnO nanofiber membranes with a 110 nm Ag layer on one side that was plated by vacuum coating technique serve as the electrode layer.As the ANF-PENG only has 91μm thick and does not need further encapsulating,it has a high air permeability of 24.97 mm/s.ZnO nanoparticles in ANF-PENG not only improve the piezoelectric output,but also have antibacterial function(over 98%).The multifunctional ANF-PENG demonstrates good sensitivity to human motion and can harvest mechanical energy,indicating great potential applications in flexible self-powered electronic wearables and body health monitoring.

关 键 词：piezoelectric nanogenerator breathability SUPER-HYDROPHOBICITY antibacterial performance wearable electronics 

分 类 号：TB383[一般工业技术—材料科学与工程]