Preparation method of a fully spin-coated flexible composite piezoelectric generator

A flexible piezoelectric and generator technology, applied in the manufacture/assembly of magnetostrictive devices, etc., can solve the problems of film piezoelectric performance degradation and easy breakdown, so as to increase the content of piezoelectric phase and improve biocompatibility Sexuality, the effect of simplifying the preparation process

Active Publication Date: 2020-04-14
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The polarization process of the composite film can improve the ferroelectric properties of the film, and the dipole charges will be oriented along the direction of the electric field, so that the nonpolar α crystal form changes to the polar β crystal form, but it is not suitable for extremely thin films, and is easy to be Breakdown, resulting in a decrease in the piezoelectric performance of the film

Method used

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  • Preparation method of a fully spin-coated flexible composite piezoelectric generator
  • Preparation method of a fully spin-coated flexible composite piezoelectric generator
  • Preparation method of a fully spin-coated flexible composite piezoelectric generator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0092] (1) Preparation of PVDF-TrFE / nano-ZnO composite film

[0093] Dissolve 1.500g PVDF-TrFE solid in 5ml N,N-dimethylformamide, and mix mechanically for 60min at room temperature to obtain a transparent viscous clear solution; dissolve 0.075g nanometer zinc oxide in 5ml acetone, add 0.2ml n-Propylamine and 0.0003g 1H, 1H, 2H, 2H-perfluorooctyltriethoxysilane, at room temperature, ultrasonically stirred and mixed for 30 minutes to obtain a transparent and clear solution; inject the nano-ZnO dispersion into the PVDF-TrFE solution, and mix mechanically for 60 minutes , to obtain a translucent homogeneous solution. The above mixed solution was placed in a vacuum drying oven, and stood at room temperature in a vacuum of 0.09 MPa for 30 minutes to remove air bubbles in the solution. Use a syringe to draw 0.3ml of the mixed solution, drop it into the center of the cleaned ITO-PEN conductive glass with a size of 2cm×2cm, turn on the pump to fix the substrate, the speed of the firs...

Embodiment 2

[0097] (1) Preparation of PVDF-TrFE / nano-ZnO composite film

[0098] Dissolve 1.500g PVDF-TrFE solid in 5ml N,N-dimethylformamide, and mix mechanically for 60min at room temperature to obtain a transparent viscous clear solution; dissolve 0.075g nanometer zinc oxide in 5ml acetone, add 0.2ml n-Propylamine and 0.0003g 1H, 1H, 2H, 2H-perfluorooctyltriethoxysilane, at room temperature, ultrasonically stirred and mixed for 30 minutes to obtain a transparent and clear solution; inject the nano-ZnO dispersion into the PVDF-TrFE solution, and mix mechanically for 60 minutes , to obtain a translucent homogeneous solution. The above mixed solution was placed in a vacuum drying oven, and stood at room temperature in a vacuum of 0.09 MPa for 30 minutes to remove air bubbles in the solution. Use a syringe to draw 0.3ml of the mixed solution, drop it into the center of the cleaned ITO-PEN conductive glass with a size of 2cm×2cm, turn on the pump to fix the substrate, the speed of the firs...

Embodiment 3

[0102] (1) Preparation of PVDF-TrFE / nano-ZnO composite film

[0103] Dissolve 1.500g PVDF-TrFE solid in 5ml N,N-dimethylformamide, and mix mechanically for 60min at room temperature to obtain a transparent viscous clear solution; dissolve 0.075g nanometer zinc oxide in 5ml acetone, add 0.2ml n-Propylamine and 0.0003g 1H, 1H, 2H, 2H-perfluorooctyltriethoxysilane, at room temperature, ultrasonically stirred and mixed for 30 minutes to obtain a transparent and clear solution; inject the nano-ZnO dispersion into the PVDF-TrFE solution, and mix mechanically for 60 minutes , to obtain a translucent homogeneous solution. The above mixed solution was placed in a vacuum drying oven, and stood at room temperature in a vacuum of 0.09 MPa for 30 minutes to remove air bubbles in the solution. Use a syringe to draw 0.3ml of the mixed solution, drop it into the center of the cleaned ITO-PEN conductive glass with a size of 2cm×2cm, turn on the pump to fix the substrate, the speed of the firs...

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Abstract

The invention relates to the technical field of preparation of nanometer generators, in particular to a preparation method of a fully spin-coated flexible piezoelectric generator. Firstly, the surface treatment of nano zinc oxide is carried out with a dispersant and a surface modifier to improve the contact between the matrix and the nanofiller. Compatibility, improve its nucleation ability, and obtain a composite film with high crystallinity; secondly, a full spin-coating preparation process is proposed. During a spin-coating process, the film is subjected to shear stress to induce polyvinylidene fluoride-trifluoroethylene Orientation is carried out to promote the formation of β phase; in the second spin coating process, spin coating conductive polymer poly(3,4‑ethylenedioxythiophene): polystyrene sulfonate is used as the upper electrode, which is a good solution The problem of layer-to-layer matching between the sandwich structure of the device is solved, and the flexibility of the device is significantly improved, which is beneficial to the piezoelectric output.

Description

technical field [0001] The invention relates to a preparation method of a fully spin-coated flexible piezoelectric generator, which belongs to the preparation of inorganic / organic composite materials and the preparation of semiconductor devices, and in particular relates to the technical field of preparation of nanometer generators. Background technique [0002] In recent years, the popularity of portable electronic products has put forward higher requirements for the power supply driving these electronic devices. The traditional power storage technology shows shortcomings such as poor durability and environmental pollution. It is imminent to develop an environmentally friendly, sustainable and independent power supply technology. Based on the piezoelectric effect, the piezoelectric generator collects various forms of mechanical energy such as human body movement, water flow, natural wind, etc., and converts it into electrical energy to provide micro functional devices, whic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L41/47
CPCH10N35/01
Inventor 李洁赵春毛夏凯韩晶李栋王文豪李迎春王文生
Owner ZHONGBEI UNIV
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