聚丙烯腈基多层异质柔性复合薄膜制备及其压电特性  

Preparation and piezoelectric performance of multi-layered heterogeneous flexible composite films based on polyacrylonitrile

作　　者：李银辉[1] 梁琨 梁建国 刘海江 李朋伟[1] LI Yinhui;LIANG Kun;LIANG Jianguo;LIU Haijiang;LI Pengwei(Taiyuan University of Technology,Nano Energy and Devices Research Center,Taiyuan030024,China;Daqin Railway Co.,Ltd.,Taiyuan030012,China)

机构地区：[1]太原理工大学纳米能源与器件研究中心,山西太原030024 [2]大秦铁路股份有限公司,山西太原030012

出　　处：《电子元件与材料》2024年第7期835-844,共10页Electronic Components And Materials

基　　金：国家自然科学基金(52075361);国家自然科学基金(52302147);山西省科技重大专项(20201102003);山西省青年科学基金(20210302124046);山西省面上科学基金(20210302123156);吕梁市校地合作重点研发专项(2022XDHZ08)。

摘　　要：为了解决压电纳米发电机的柔性和压电输出特性不能协同提高的难题,采用旋涂法制备纯聚丙烯腈(PAN)压电薄膜和PAN/氧化石墨烯(rGO)复合压电薄膜,通过堆叠热压法制备PAN-PAN/rGO-PAN和PAN/rGO-PANPAN/rGO两种典型的三明治异质压电纳米发电机。系统研究了rGO掺杂质量分数对PAN/rGO复合压电薄膜和两种典型异质复合薄膜的压电输出性能的影响。研究结果表明,三层异质PAN-PAN/rGO-PAN型和PAN/rGO-PANPAN/rGO型复合薄膜压电纳米发电机输出最大的电压分别达到4.61 V和5.80 V,比三层同质PAN-PAN-PAN复合压电纳米发电机输出电压分别提高34.0%和68.6%。当负载电阻为10 MΩ时,PAN/rGO_(0.4)-PAN-PAN/rGO_(0.4)复合薄膜压电纳米发电机的输出功率最大值为2.02μW。经过4500次循环测试表明,本文制备的三层异质复合薄膜输出性能稳定。该纳米发电机有望作为自供能微型压力传感器在柔性可穿戴电子设备和电子皮肤中广泛应用。To achieve synergistic improvement of flexibility and piezoelectric output in piezoelectric nanogenerators,polyacrylonitrile(PAN)piezoelectric thin film and PAN/reduced graphene oxide(rGO)composite piezoelectric thin films were prepared by spin coating method.Two typical sandwich heterojunction piezoelectric nanogenerator(PNG),namely PAN-PAN/rGO-PAN and PAN/rGO-PAN-PAN/rGO,were prepared by stacking hot pressing method.Systematic study was performed to understand the effect of rGO doping content on the output performance of the PAN/rGO composite PNG and two typical heterojunction composite PNG.The results show that the maximum output voltage of the PAN-PAN/rGO-PAN and PAN/rGO-PAN-PAN/rGO composite PNG can reach 4.61 V and 5.80 V,respectively,which is 34.0%and 68.6%higher than that of the three-layer homogeneous PAN-PAN-PAN PNG.The maximum output power of the PAN/rGO_(0.4)-PAN-PAN/rGO_(0.4)composite PNG is 2.02μW at the external load resistance of 10 MΩ.In addition,it demonstrates that the three-layer heterogeneous composite PNG has excellent stability after 4500 pressing-releasing cycles test,which shows its great potential applications in flexible wearable electronic devices and flexible electronic skin.

关 键 词：PAN薄膜 PAN/rGO复合薄膜 异质三明治结构 柔性 压电纳米发电机 

分 类 号：TN384[电子电信—物理电子学]