Fabrication of composite PVDF-ZnO nanofiber mats by electrospinning for energy scavenging application with enhanced efficiency
Fabrication of composite PVDF-ZnO nanofiber mats by electrospinning for energy scavenging application with enhanced efficiency
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DOI：
10.1007/s10965-015-0765-8
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发表时间：
2015-06-10
影响因子：
2.8
通讯作者：
Latifi, Masoud
中科院分区：
文献类型：
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作者：
Bafqi, Mohammad Sajad Sorayani;Bagherzadeh, Roohollah;Latifi, Masoud
采用一步静电纺丝法制备了复合静电纺纳米纤维垫。纤维结构由聚偏氟乙烯（PVDF）为基体，氧化锌（ZnO）纳米粒子组成；采用静电纺丝技术制备纳米复合材料，使其具有ZnO和PVDF的压电特性和非脆性特性，可用于可穿戴电子器件。采用x射线衍射（XRD）、傅里叶变换红外（FTIR）、差示扫描量热法（DSC）和扫描电镜（SEM）对这些结构进行了表征。用基思利仪器对复合材料的阻抗和电导率进行了测试。使用Aims实验室（http://aims.aut.ac.ir）制造的阻抗分析仪在室温下测量样品的电响应。结果表明，与PVDF样品相比，将ZnO纳米颗粒掺入PVDF纳米纤维中可以提高样品的压电性能。与纯PVDF样品的0.351 V相比，复合样品的电输出高达1.1 V。这些结果意味着有前景的应用，作为一个提高效率的能量清除接口，用于各种可穿戴的自供电电气设备和系统。
Composite electrospun nanofibers mats, as a nano-generator, were fabricated through one-step electrospinning method. The structure of fibers is composed of Poly(vinylidene fluoride), PVDF, as the matrix, and Zinc oxide (ZnO) nanoparticles; the nanocomposite were produced using electrospinning technique in order to have the benefit of piezoelectric properties and non-brittle behavior of ZnO and PVDF for the application in wearable electronic devices. Characteristics of these structures were evaluated by using Xray diffraction (XRD), Fourier Transform Infrared (FTIR), Differential Scanning Calorimetry (DSC) and Scanning Electron Microscopy (SEM). Impedance and the electrical conductivity of the fabricated composites were also evaluated by Keithley instruments. Electrical response of samples was measured using an impedance analyzer made in Aims Lab (http://aims.aut.ac.ir) at room temperature. Results showed that incorporating the ZnO nanoparticles into the PVDF nanofibers improved the piezoelectric properties of samples compared to PVDF samples. The electrical output of composite samples was improved as high as 1.1 V compared with 0.351 V for the pure PVDF samples. These results imply promising applications, as an enhanced-efficiency energy-scavenging interface, for various wearable self-powered electrical devices and systems.