Triboelectric Nanogenerator-Based Near-Field Electrospinning System for Optimizing PVDF Fibers with High Piezoelectric Performance
- 20 January 2023
- journal article
- research article
- Published by American Chemical Society (ACS) in ACS Applied Materials & Interfaces
- Vol. 15 (4), 5242-5252
- https://doi.org/10.1021/acsami.2c19568
Abstract
Electrospinning is an effective method to prepare polyvinylidene fluoride (PVDF) piezoelectric fibers with a high percentage fi phase. However, as an energy conversion material for micro-and nanoscale diameters, PVDF fibers have not been widely used due to their disordered arrangement prepared by traditional electrospinning. Here, we designed a near-field electro-spinning (NFES) system driven by a triboelectric nanogenerator (TENG) to prepare PVDF fibers. The effects of five important parameters (PVDF concentration, needle inner diameter, TENG pulse DC voltage (TPD-voltage), flow rate, and drum speed) on the fi phase fraction of PVDF fiber were optimized one by one. The results showed that the electrospun PVDF fibers had uniform diameter and controllable parallel arrangement. The fi phase content of the optimized PVDF fiber reached 91.87 +/- 0.61%. For the bending test of a single PVDF fiber piezoelectric device, when the strain is 0.098%, the electric energy of the single PVDF fiber device of NFES reaches 7.74 pJ and the energy conversion efficiency reaches 13.5%, which is comparable to the fibers prepared by the commercial power-driven NFES system. In 0.5 Hz, the best matching load resistance of a PVDF single fiber device is 10.6 MCI, the voltage is 6.1 mV, and the maximum power is 3.52 pW. Considering that TENG can harvest micromechanical energy in the low frequency environment, the application scenario of the NFES system can be extended to the wild or remote mountainous areas without traditional high-voltage power supply. Therefore, the electrospun PVDF fibers in this system will have potential applications in high-precision 3D fabrication, self-powered sensors, and flexible wearable electronic products.Funding Information
- National Natural Science Foundation of China (51901001)
- Natural Science Foundation of Anhui Province (2008085MF221, 2208085J16)
- Anhui Province (2020H209)
This publication has 51 references indexed in Scilit:
- Self-powered sensing elements based on direct-write, highly flexible piezoelectric polymeric nano/microfibersNano Energy, 2015
- Effects of Substrate on Piezoelectricity of Electrospun Poly(vinylidene fluoride)-Nanofiber-Based Energy GeneratorsACS Applied Materials & Interfaces, 2014
- Direct-write PVDF nonwoven fiber fabric energy harvesters via the hollow cylindrical near-field electrospinning processSmart Materials and Structures, 2013
- Flexible triboelectric generatorNano Energy, 2012
- Cooperative Effect of Electrospinning and Nanoclay on Formation of Polar Crystalline Phases in Poly(vinylidene fluoride)ACS Applied Materials & Interfaces, 2010
- Direct-Write Piezoelectric Polymeric Nanogenerator with High Energy Conversion EfficiencyNano Letters, 2010
- Characteristics of output voltage and current of integrated nanogeneratorsApplied Physics Letters, 2009
- Near-Field ElectrospinningNano Letters, 2006
- Nanocomposites of poly(vinylidene fluoride) with organically modified silicatePolymer, 2006
- Vibrational spectrum of PVDF and its interpretationPolymer Testing, 2004