物理学报2025，Vol.74Issue(7)：224-237,14.DOI:10.7498/aps.74.20241676
PAN/MoS2柔性复合纳米纤维膜的压电传感特性
Piezoelectric sensing properties of PAN/MoS2 flexible composite nanofiber film
摘要
Abstract
Flexible piezoelectric materials can convert mechanical energy into electrical energy to power micro/nano electronic devices.In recent years,research into piezoelectric technologies has revealed that molybdenum disulfide(MoS2)can improve the piezoelectric properties of composite materials.In this research the fabrication of a PAN/MoS2 flexible composite nanofiber film piezoelectric sensor via electrospinning is presented.The influence of MoS2 nanosheet content on the piezoelectric performance of the PAN/MoS2 composite nanofiber films is systematically investigated,and the morphology and structure of the composite nanofiber films are characterized.The results show that MoS2 is uniformly distributed in the composite nanofiber films,and the zigzag conformation of the PAN molecular is enhanced by adding MoS2.As the MoS2 doping content increases,the performance of the PAN/MoS2 composite nanofiber film sensor shows a first-increasing-and-then-decreasing trend,and ultimately reaching a maximum value when the MoS2 weight content is 3.0％.When the MoS2 doping content increases from 0％to 3.0％,the open-circuit output voltage of the PAN/MoS2 composite nanofiber film sensor increases from 1.92 V to 4.64 V,and the short-circuit output current increases from 1.03 μA to 2.69 μA.At 3.0％MoS2 doping,the maximum output power of the PAN/MoS2 composite nanofiber film sensor reaches 3.46 μW:with an internal resistance of approximately 10 MΩ.The output voltage of the composite nanofiber film sensor increases with the applied external force increasing.At a frequency of 10 Hz,when external forces of 2 N,3 N,4 N,5 N,and 6 N are applied,the sensor output voltages are 2 V,3.4 V,5.9 V,8.7 V,and 10.3 V,respectively.Compared with pure PAN film,the PAN/MoS2 composite nanofiber film has a piezoelectric constant d33 increases by 4.86 times.The PAN/MoS2 composite nanofiber film sensor can efficiently charge commercial capacitors,and the discharging of capacitors can successfully power a green LED.Additionally,it can monitor in real-time,under passive conditions,the bending state of the knee and the forward movement of the bicycle wheel during cycling.After 10000 impact cycles,the PAN/MoS2 composite nanofiber film sensor shows stable voltage output with no obvious fluctuations,demonstrating excellent stability.All in all,the PAN/MoS2 flexible composite nanofiber film sensor exhibits outstanding flexibility,low cost,and self-powered capabilities,showing promising potential for applications in wearable/portable electronics,smart devices,and intelligent robotics.关键词
聚丙烯腈/二硫化钼/柔性纳米纤维膜/压电传感Key words
PAN/MoS2/flexible nanofiber film/piezoelectric sensor引用本文复制引用
张恒博,边桂彬,李银辉,李玮栋,高飞,殷荣艳,梁建国,赵鹏,周赟磊,李朋伟..PAN/MoS2柔性复合纳米纤维膜的压电传感特性[J].物理学报,2025,74(7):224-237,14.基金项目
国家自然科学基金(批准号:52075361,52205593)、山西省科技重大专项(批准号:20201102003)、山西省自然科学基金青年科学基金(批准号:20210302124046)、山西省自然科学基金(批准号:20210302123156)和吕梁市校地合作重点研发专项(批准号:2022XDHZ08)资助的课题. Project supported by the National Natural Science Foundation of China(Grant Nos.52075361,52205593),the Major Science and Technology Project of Shanxi Province,China(Grant No.20201102003),the Shanxi Province Natural Science Foundation for Youth Scientists,China(Grant No.20210302124046),the Natural Science Foundation of Shanxi Province,China(Grant No.20210302123156),and the Key Research and Development Special Projects of Luliang city and University Cooperation,China(Grant No.2022XDHZ08). （批准号:52075361,52205593）
