High performance rotary triboelectric nanogenerator based on wool charge supplementation strategy with low wear  

作　　者：CAI MingZhe HAO CongCong WANG ZeKun ZHAI Cong ZHENG YongQiu XUE ChenYang 

机构地区：[1]Key Laboratory of Instrumentation Science&Dynamic Measurement Ministry of Education,North University of China,Taiyuan,030051,China

出　　处：《Science China(Technological Sciences)》2024年第11期3535-3545,共11页中国科学（技术科学英文版）

基　　金：supported by the Natural Science Foundation for Young Scientists of Shanxi Province(Grant No.202203021212127)。

摘　　要：Triboelectric nanogenerator(TENG)is an emerging method for harvesting mechanical energy.In traditional rotary TENGs(RTENGs),the mutual friction between positive and negative friction materials significantly shortens their operational lifespan.The non-contact triboelectric nanogenerator addresses this issue effectively;however,its low output performance still limits practical applications.In this work,we introduce a novel charge supplementation strategy to enhance the performance of NCRTENGs.This strategy involves directly affixing wool between the Cu electrodes of the NCR-TENG,while the negative friction material is modified by doping with MXene,resulting in a substantial enhancement of output.The voltage,current,and charge transfer increased by 4.5,4.5,and 4.8 times,respectively,reaching 451 V,21.2μA and 47 nC.Furthermore,NCR-TENG demonstrates remarkable stability,maintaining 100%output characteristics after 33,600 cycles.The output power reaches2.3 mW when load resistance is 107Ω.It takes only 0.8 s to charge a 0.1μF capacitor to 10 V.This work not only improves the output performance of the NCR-TENG but also retains the capability of low-speed startup while maintaining high wear resistance.The simple and effective charge supplementation strategy proposed here provides a new perspective for further improving the output characteristics of NCR-TENGs.NCR-TENG has potential application prospects in harvesting wind energy to power traffic flow sensor networks,detecting environmental and vehicle information,and optimizing traffic signal control.

关 键 词：triboelectric nanogenerators charge supplementation strategy high wear resistance wind energy harvesting 

分 类 号：TM31[电气工程—电机] TB383.1[一般工业技术—材料科学与工程]