The Radial Piezoelectric Response from Three-Dimensional Electrospun PVDF Micro Wall Structure
Open Access
- 18 March 2020
- Vol. 13 (6), 1368
- https://doi.org/10.3390/ma13061368
Abstract
The ability of electrospun polyvinylidene fluoride (PVDF) fibers to produce piezoelectricity has been demonstrated for a while. Widespread applications of electrospun PVDF as an energy conversion material, however, have not materialized due to the random arrangement of fibers fabricated by traditional electrospinning. In this work, a developed 3D electrospinning technique is utilized to fabricate a PVDF micro wall made up of densely stacked fibers in a fiber-by-fiber manner. Results from X-ray diffraction (XRD) and Fourier transform infrared spectra (FTIR) demonstrate that the crystalline structure of this PVDF wall is predominant in the β phase, revealing the advanced integration capability of structural fabrication and piezoelectric poling with this 3D electrospinning. The piezoelectric response along the radial direction of these PVDF fibers is measured while the toppled micro wall, comprised of 60 fibers, is sandwich assembled with a pair of top/bottom electrodes. The measured electrical output is ca. 0.48 V and 2.7 nA. Moreover, after constant mechanical compression happening over 10,000 times, no obvious reduction in the piezoelectric response has been observed. The combined merits of high-precision 3D fabrication, in situ piezoelectric poling, and high mechanical robust make this novel structure an attractive candidate for applications in piezoelectric energy harvesting and sensing.Funding Information
- National Natural Science Foundation of China (51705409, 91748207, 51890884)
- Natural Science Foundation of Jiangsu Province (BK20170415)
- China Postdoctoral Science Foundation (2017M613120)
- Fundamental Research Funds for the Central Universities (xjj2017094)
This publication has 24 references indexed in Scilit:
- Electromechanical Properties of PVDF-Based Polymers Reinforced with Nanocarbonaceous Fillers for Pressure Sensing ApplicationsMaterials, 2019
- Electrospinning and Electrospun Nanofibers: Methods, Materials, and ApplicationsChemical Reviews, 2019
- Electrospun Ceramic Nanofiber Mats Today: Synthesis, Properties, and ApplicationsMaterials, 2017
- A review of piezoelectric polymers as functional materials for electromechanical transducersSmart Materials and Structures, 2014
- Recent progress in fluoropolymers for membranesProgress in Polymer Science, 2014
- Piezoelectric and ferroelectric materials and structures for energy harvesting applicationsEnergy & Environmental Science, 2013
- Origin of Piezoelectricity in an Electrospun Poly(vinylidene fluoride‐trifluoroethylene) Nanofiber Web‐Based Nanogenerator and Nano‐Pressure SensorMacromolecular Rapid Communications, 2011
- Electrical power generator from randomly oriented electrospun poly(vinylidene fluoride) nanofibre membranesJournal of Materials Chemistry, 2011
- Direct-Write Piezoelectric Polymeric Nanogenerator with High Energy Conversion EfficiencyNano Letters, 2010
- Design considerations for piezoelectric polymer ultrasound transducersIEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2000