Preparation method of flexible piezoelectric nano-generator based on perovskite polymer composite material

A nanogenerator, flexible piezoelectric technology, applied in the direction of piezoelectric effect/electrostriction or magnetostriction motor, generator/motor, electrospinning, etc., can solve the problems of short service life and easy decomposition of devices , to achieve the effect of improving the piezoelectric performance and increasing the charge density

Active Publication Date: 2020-04-07
UNIV OF SCI & TECH BEIJING
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] However, organic-inorganic hybrid perovskite has the disadvantage of being easily decomposed in oxygen environment, aqueous environment and high temperature environment, which makes the service life of the device using this material as the active material very short.
In order to s...

Method used

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  • Preparation method of flexible piezoelectric nano-generator based on perovskite polymer composite material
  • Preparation method of flexible piezoelectric nano-generator based on perovskite polymer composite material
  • Preparation method of flexible piezoelectric nano-generator based on perovskite polymer composite material

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preparation example Construction

[0026] A method for preparing a flexible piezoelectric nanogenerator based on a perovskite polymer composite material provided by an embodiment of the present invention includes the following steps:

[0027] Step 1) Preparation of perovskite precursor solution: see figure 1 Add 0.1-3g of lead halide and cesium halide to 10-20ml N,N dimethylformamide, or add 0.1-3g of lead chloride and cesium chloride to 10-20ml dimethyl sulfoxide (DMSO) with a magnetic stirrer until completely dissolved. Then take 3ml more solution, add 0.4-3g polyvinylidene fluoride (PVDF), stir magnetically at 50°C until the polyvinylidene fluoride is completely dissolved into a clear and transparent solution, then add 0.2-0.4ml oleic acid and 0.2- 0.4ml of oleylamine, after magnetic stirring for half an hour, a clear, uniform and transparent perovskite precursor solution was obtained.

[0028] Step 2) Electrode preparation: use a flat screen printing machine to print the finger electrodes. The flat screen...

Embodiment 1

[0036] Step 1) raw material preparation: the weighed CsI, PbI 2 Put 0.1g and 0.1g into 10ml N, N dimethylformamide and acetone solvent respectively, after magnetic stirring is completely dissolved, take 3-8ml solution into another beaker, add 0.4g PVDF, magnetic stirring at 50°C After the solution was completely transparent, 0.3ml of oleic acid and 0.03ml of oleylamine were added, and after magnetic stirring for half an hour, a uniform and transparent perovskite precursor solution was obtained.

[0037] Step 2) Electrode preparation: Use a screen printing machine to fix the prefabricated screen printing screen on the screen printing machine, adjust the position between the scraper frame and the screen, and place the substrate PET at a suitable position on the transmission table , put the low-temperature silver paste on the screen to print the finger electrode, after printing, put it in an oven at 80-120°C for 0.5-1h to dry.

[0038] Step 3) Electrospinning composite fiber: us...

Embodiment 2

[0041] Step 1) raw material preparation: the weighed CsI, PbI 2 Put 0.2g and 0.2g into 10ml N, N dimethylformamide and 6ml acetone solvent respectively, after magnetic stirring is completely dissolved, take 3ml solution into another beaker, add 1.5g PVDF, and magnetically stir at 50°C until After the solution was completely transparent, 0.3ml of oleic acid and 0.03ml of oleylamine were added, and after magnetic stirring for half an hour, a uniform and transparent perovskite precursor solution was obtained.

[0042] Step 2) Electrode preparation: Use a screen printing machine to fix the prefabricated screen printing screen on the screen printing machine, adjust the position between the scraper frame and the screen, and place the substrate PET at a suitable position on the transmission table , Print low-temperature silver paste on the screen. Then put it in an oven at 80°C for 30 minutes to dry.

[0043] Step 3) Electrospinning composite fibers:

[0044] Use a 14G single-hole...

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Abstract

The invention provides a preparation method of a flexible piezoelectric nano-generator based on a perovskite polymer composite material. The preparation method comprises the following steps of firstly, preparing a perovskite precursor spinning solution, then preparing a silver interdigital electrode on a PET substrate by using a low-temperature silver paste as a raw material through a silk-screenprinting process, next, adopting an electrostatic spinning machine, taking the interdigital electrode pasted on a high-speed roller as a receiving plate, setting different parameters for carrying outhigh-pressure spinning forming to obtain composite fibers, and finally assembling the flexible piezoelectric nano-generator based on the composite fibers. By virtue of the preparation method of the flexible piezoelectric nano-generator based on the perovskite polymer composite material provided by the invention, the prepared flexible piezoelectric nano-generator is high in stability.

Description

technical field [0001] The invention relates to the technical field of piezoelectric nanogenerators, in particular to a method for preparing a flexible piezoelectric nanogenerator based on a perovskite polymer composite material. Background technique [0002] Piezoelectric nanogenerator is a conversion device that utilizes the piezoelectric effect to realize mechanical energy-electric energy. It can convert various forms of mechanical energy in the environment into electrical energy through piezoelectric material modification and device conversion efficiency improvement to drive small commercial electronics. Devices and wireless transmission equipment, etc., have the advantages of simple structure, small size and little influence from the external environment, and are favored by many energy harvesting technology researchers. However, the widely studied piezoelectric semiconductor materials and piezoelectric ceramic materials require high temperature in the synthesis process ...

Claims

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Application Information

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IPC IPC(8): D01D5/00H02N2/00
CPCD01D5/003D01D5/0069D01D5/0092D01D5/0084H02N2/22
Inventor 侯新梅陈慧颖杨涛王恩会陈俊红李斌
Owner UNIV OF SCI & TECH BEIJING
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