Flexible and stretchable piezoelectric nanogenerator based on interdigitated electrode structure and its preparation method

A technology of nanogenerators and interdigitated electrodes, applied in the manufacture/assembly of piezoelectric/electrostrictive devices, generators/motors, piezoelectric effect/electrostrictive or magnetostrictive motors, etc., can solve the problem of flexible Problems such as high polymer viscosity, breakage and drop of the piezoelectric film, good flexibility and stretchability, increased output voltage, and simple manufacturing process

Active Publication Date: 2020-11-27
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, flexible and stretchable piezoelectric nanogenerators prepared by adding piezoelectric materials to flexible polymers cannot well combine stretchability and piezoelectricity at the same time.
Because at present, the piezoelectric split is mainly added to the flexible polymer by ultrasonic vibration or manual mechanical stirring after mixing the flexible polymer and the piezoelectric material. Electric powder (generally below 40wt%) causes the piezoelectric performance of the piezoelectric film obtained after mixing to drop significantly. On the other hand, due to the high viscosity of the flexible polymer, it is impossible to mix the flexible polymer material under this process condition The piezoelectric powder in the mixture is well and evenly distributed, so that the mixed piezoelectric film is prone to breakage during stretching

Method used

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  • Flexible and stretchable piezoelectric nanogenerator based on interdigitated electrode structure and its preparation method
  • Flexible and stretchable piezoelectric nanogenerator based on interdigitated electrode structure and its preparation method
  • Flexible and stretchable piezoelectric nanogenerator based on interdigitated electrode structure and its preparation method

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Experimental program
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Effect test

Embodiment 1

[0045] The specific fabrication steps of the flexible and stretchable piezoelectric nanogenerator based on the interdigitated electrode structure are as follows:

[0046] Step 1: Preparation of flexible polymer materials: mix the raw rubber and vulcanizing agent in a ratio of 100:2, and knead on a mixer for 1 to 3 hours to mix the raw rubber and vulcanizing agent evenly.

[0047] Step 2: Preparation of interdigitated electrode film layer: take copper powder (40%) and mix it evenly into the flexible polymer material (60%) prepared in step 1, and knead on a mixer for 1-3 hours , After kneading, it is vulcanized by a flat vulcanizer for 20 minutes. The vulcanization temperature is 180 ° C. During the vulcanization process, the mold is used to control its shape, size and thickness.

[0048] Step 3: Preparation of piezoelectric film based on interdigitated electrodes: Take lead zirconate titanate (80%) and mix it evenly into the flexible polymer material (20%) prepared in step 1, a...

Embodiment 2

[0053] The specific fabrication steps of the flexible and stretchable piezoelectric nanogenerator based on the interdigitated electrode structure are as follows:

[0054] Step 1: Preparation of flexible polymer materials: mix the raw rubber and vulcanizing agent in a ratio of 100:1, and knead on a mixer for 1 to 3 hours to make the raw rubber and vulcanizing agent evenly mixed.

[0055] Step 2: Preparation of interdigitated electrode film layer: Take silver powder (80%) and mix it evenly into the flexible polymer material (20%) prepared in step 1, and knead on a mixer for 1 to 3 hours, After kneading, vulcanize it with a flat vulcanizer for 25 minutes at a vulcanization temperature of 180°C. During the vulcanization process, use a mold to control its shape, size and thickness.

[0056] Step 3: Preparation of piezoelectric film based on interdigitated electrodes: take barium titanate (50%) and mix it evenly into the flexible polymer material (50%) prepared in step 1, and knead ...

Embodiment 3

[0061] The specific fabrication steps of the flexible and stretchable piezoelectric nanogenerator based on the interdigitated electrode structure are as follows:

[0062] Step 1: Preparation of flexible polymer materials: mix the raw rubber and vulcanizing agent in a ratio of 100:2, and knead on a mixer for 1 to 3 hours to mix the raw rubber and vulcanizing agent evenly.

[0063] Step 2: Preparation of interdigitated electrode film layer: take silver copper powder (60%) and mix it evenly into the flexible polymer material (40%) prepared in step 1, and knead on a mixer for 1~3 After mixing, it is vulcanized for 25 minutes with a flat vulcanizer, and the vulcanization temperature is 170 ° C. During the vulcanization process, the mold is used to control its shape, size and thickness.

[0064] Step 3: Preparation of piezoelectric film based on interdigitated electrodes: Take lead magnesium niobate-lead titanate (70%) and mix it evenly into the flexible polymer material (30%) prepa...

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Abstract

The invention discloses a film-type piezoelectric nano generator based on an interdigital electrode structure. The film-type piezoelectric nano generator includes a piezoelectric film layer and an interdigital electrode film layer. The interdigital electrode film layer is composed of a unilateral electrode A and a unilateral electrode B. The interdigital electrode film layer is half-embedded intothe piezoelectric film layer. The piezoelectric film layer is prepared by filling a flexible polymer material with a piezoelectric material. The unilateral electrode A and the unilateral electrode B in the interdigital electrode film layer are prepared by filling the flexible polymer material with conductive particles. The nano generator adopts a d33 coupling mode. Thus, the problem that the ordinary piezoelectric nano generator has low output voltage in a d31 coupling mode is solved on the basis of ensuring good flexibility and stretchability.

Description

technical field [0001] The invention belongs to the field of piezoelectric nanogenerators, in particular to a flexible and stretchable film-type piezoelectric nanogenerator based on an interdigital electrode structure and a preparation method thereof. Background technique [0002] In recent years, flexible electronic devices such as wearable devices, implantable electronic devices, and electronic skins have developed rapidly. At the same time, there is an urgent need for a clean, portable energy source that can work independently and continuously. As an energy conversion device based on the principle of piezoelectric effect and electrostatic induction, the piezoelectric nanogenerator can convert tiny mechanical energy in the environment into electrical energy. It has the advantages of small size, light weight, and little influence from the environment. Construction of the drive system. The mechanical energy generated by the vibration when the human body walks, and the mecha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L41/047H01L41/113H01L41/22H02N2/18
Inventor 丑修建何剑牛旭时耿文平穆继亮侯晓娟薛晨阳朱杰张启程乔骁骏原景超
Owner ZHONGBEI UNIV
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