Preparation method of core-shell structure piezoelectric material and piezoelectric nano generator

A piezoelectric material and core-shell structure technology, applied in the field of materials, can solve the problems of ceramic filling phase aggregation, complex material synthesis process, service life period, etc., to achieve the effect of improving piezoelectric output and durability

Active Publication Date: 2022-03-04
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The traditional method of adding conductive substances is mainly based on chemical synthesis. This method has the following problems: (1) The material synthesis process is relatively complicated; (2) The synthesis process is difficult to control; (3) It is easy to cause ceramic filling after adding a conductive phase. Phase aggregation in polymer organic materials; (4) The piezoelectric nanogenerators made have poor durability, and the service life is short

Method used

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  • Preparation method of core-shell structure piezoelectric material and piezoelectric nano generator
  • Preparation method of core-shell structure piezoelectric material and piezoelectric nano generator
  • Preparation method of core-shell structure piezoelectric material and piezoelectric nano generator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] (1) Take 5.005g of tetrabutyl titanate, 13.88g of acetic acid, 4.4g of acetylacetone, 10.57g of ethanol, 8.24g of basic lead acetate and 7.8016g of zirconium acetylacetonate into a 50mL Erlenmeyer flask, stir for 24h, and prepare into a PZT electrospinning precursor.

[0068] (2) Use a 5mL needle to take 2mL of the precursor solution obtained in step (2) and put it into the electrospinning equipment for electrospinning. Adjust the electrospinning parameters: the receiving plate distance is 20cm, the voltage is 21kV, and the advancing speed is 1mL / h.

[0069] (3) Put the film obtained in step (2) into a crucible, and perform annealing treatment in an annealing furnace. During the annealing process, the temperature was raised to 400°C at a heating rate of 5°C / min, kept for 30 minutes, then raised to 750°C, kept for 2 hours and naturally cooled to room temperature.

[0070] (4) Add the result of step (3) into a mortar and a small amount of alcohol, and grind until the alc...

Embodiment 2

[0082] (1) Take 5.005g of tetrabutyl titanate, 13.88g of acetic acid, 4.4g of acetylacetone, 10.57g of ethanol, 8.24g of basic lead acetate and 7.8016g of zirconium acetylacetonate into a 50mL Erlenmeyer flask, stir for 24h, and prepare into a PZT electrospinning precursor.

[0083] (2) Use a 5mL needle to take 2mL of the precursor solution obtained in step (2) and put it into the electrospinning equipment for electrospinning. Adjust the electrospinning parameters: the receiving plate distance is 20cm, the voltage is 21kV, and the advancing speed is 1mL / h.

[0084] (3) Put the film obtained in step (2) into a crucible, and perform annealing treatment in an annealing furnace. During the annealing process, the temperature was raised to 400°C at a heating rate of 5°C / min, kept for 30 minutes, then raised to 750°C, kept for 2 hours and naturally cooled to room temperature.

[0085] (4) Add the result of step (3) into a mortar and a small amount of alcohol, and grind until the alcoh...

Embodiment 3

[0094] (1) Take 5.005g of tetrabutyl titanate, 13.88g of acetic acid, 4.4g of acetylacetone, 10.57g of ethanol, 8.24g of basic lead acetate and 7.8016g of zirconium acetylacetonate into a 50mL Erlenmeyer flask, stir for 24h, and prepare into a PZT electrospinning precursor.

[0095] (2) Use a 5mL needle to take 2mL of the precursor solution obtained in step (2) and put it into the electrospinning equipment for electrospinning. Adjust the electrospinning parameters: the receiving plate distance is 20cm, the voltage is 21kV, and the advancing speed is 1mL / h.

[0096] (3) Put the film obtained in step (2) into a crucible, and perform annealing treatment in an annealing furnace. During the annealing process, the temperature was raised to 400°C at a heating rate of 5°C / min, kept for 30 minutes, then raised to 750°C, kept for 2 hours and naturally cooled to room temperature.

[0097] (4) Add the result of step (3) into a mortar and a small amount of alcohol, and grind until the alc...

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Abstract

The invention provides a preparation method of a core-shell structure piezoelectric material and a piezoelectric nano-generator. The preparation method comprises the following steps: (1) adding tetrabutyl titanate, acetic acid, acetylacetone, ethanol, basic lead acetate and zirconium acetylacetonate into a container, and stirring to prepare a precursor solution; (2) putting the precursor solution into electrostatic spinning equipment for electrostatic spinning to obtain a film; (3) the thin film is put into an annealing furnace to be subjected to annealing treatment; (4) adding the annealed film into a mortar, and adding alcohol to obtain powder; (5) putting the powder into a centrifugal tube, adding liquid metal Ga into the centrifugal tube, and sealing; and (6) the centrifugal tube is oscillated until the powder is gray, ultrasonic treatment is carried out, the piezoelectric material Ga-PZT (at) GaOx of the core-shell structure is prepared, the lead zirconate titanate series piezoelectric ceramic PZT serves as a core, and the amorphous gallium oxide GaOx serves as a shell. In the core-shell structure, the shell layer can effectively serve as a PZT surface buffer layer, and mutual extrusion and collision between PZT and PVDF-TrFE are protected.

Description

technical field [0001] The invention relates to the field of materials, more specifically, to a preparation method of a piezoelectric material with a core-shell structure and a piezoelectric nanogenerator. Background technique [0002] In the human living environment, mechanical energy has the characteristics of various forms, wide range of existence, and strong independence. It is one of the most abundant energies in the environment. However, due to its scattered forms, low energy density, and low frequency, it is often ignored and wasted. . In recent years, with the continuous development and progress of nanotechnology, a power generation device that converts mechanical energy into electrical energy within the nanoscale range - nanogenerator, has been developed. A piezoelectric nanogenerator is a microgenerator that converts mechanical energy into electrical energy by utilizing the piezoelectric properties of materials. Materials with piezoelectric properties can be pola...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/85C01G15/00H02N2/00H02N2/18
CPCC04B41/85C04B41/50C04B41/009C01G15/00H02N2/18H02N2/22C01P2004/04C01P2004/03C01P2006/40C04B41/455C04B41/4523C04B41/0072C04B35/491
Inventor 熊娟顾豪爽曾实王钊姚旭肖经浩张名锐赵梓帆周瑞
Owner HUBEI UNIV
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