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A triboelectric nanogenerator that captures wind and sound energy

A nano-generator, nano-power generation technology, applied in the direction of friction generator, wind power generation, wind turbine consistent with the wind direction, etc., can solve the problems of weak output effect, lack of simultaneous capture of wind energy and sound energy, etc., and achieve open circuit voltage enhancement. , the effect of improving output performance

Active Publication Date: 2022-07-08
HENAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A variety of devices for capturing wind energy and sound energy have been designed at present, but most of them are devices for separately capturing wind energy or sound energy. Acoustic Devices

Method used

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  • A triboelectric nanogenerator that captures wind and sound energy
  • A triboelectric nanogenerator that captures wind and sound energy
  • A triboelectric nanogenerator that captures wind and sound energy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example one, as figure 1 As shown, a triboelectric nanogenerator that captures wind and acoustic energy includes a wind-driven triboelectric nanogenerator and a sound-driven triboelectric nanogenerator.

[0034] The wind-driven triboelectric nanogenerating device includes a windmill 1 with a diameter of 28 cm, three interdigitated electrodes made of polytetrafluoroethylene friction layer (PTFE) 2 attached to the windmill 1 and two complementary conductive fabrics 3 . In order to facilitate the fixation of the interdigital electrodes, a disc 6 made of acrylic plate was fabricated. First, the acrylic plate was cut into radial discs (outer diameter 19cm) with a laser engraving machine as the wind-driven triboelectric nanogenerator. The bracket, the disc 6 is composed of six sector-shaped parts, each sector-shaped part has a radius of 7cm and a central angle of 60°.

[0035] Two conductive fabrics 3 are pasted on the disc 6 by double-sided tape and separated by small gaps ...

Embodiment 2

[0039] Embodiment 2, analyze the polyvinylidene fluoride-trifluoroethylene nanofiber membrane and conductive fabric in Embodiment 1, and the results are as follows: figure 2 and 3 shown.

[0040] figure 2 Shows the SEM image of the polyvinylidene fluoride-trifluoroethylene nanofiber membrane prepared by a domestic electrospinning device (equipped with a drum rotating collector), and the polyvinylidene fluoride-trifluoroethylene nanofiber membrane consists of an average diameter of The 100 nm polyvinylidene fluoride-trifluoroethylene (P(VDF-TrFE)) nanofibers appear to be straight and uniform.

[0041] image 3 The SEM image of the conductive fabric is shown, which is a square array of micropores with a side length of 65 μm. The inherent rectangular micropore structure in the conductive fabric is conducive to the transmission of sound to the friction layer of the polyvinylidene fluoride-trifluoroethylene nanofiber membrane.

Embodiment 3

[0042] Example 3: In Example 1, the wind-driven triboelectric nano-generating device collects wind energy and the sound-driven tribo nano-generating device collects acoustic wave energy.

[0043] The wind-driven triboelectric nanogenerator is a triboelectric nanogenerator based on the independent layer mode. The interdigitated electrodes made of conductive fabric on the stator (disk 6) and the PTFE friction layer (PTFE) on the rotor (windmill 1) ), the alternating current is supplied to the external load. like Figure 4 As shown, the first contact electrode of the PTFE membrane is labeled electrode F, and the electrode next to electrode F is named electrode N. In the initial state ( Figure 4 -i), once the PTFE membrane is in complete physical contact with the electrode F, the surface of the PTFE membrane is negatively charged due to the different polarities of different friction materials, while the conductive fabric electrode F is positively charged. Since the PTFE membra...

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Abstract

A triboelectric nanogenerator for capturing wind energy and sound energy relates to the field of nanometer power generation, including a wind-driven triboelectric nanogenerator and a sound-driven triboelectric nanogenerator. The wind-driven triboelectric nanogenerator comprises a windmill and three poly Interdigitated electrodes made of a tetrafluoroethylene friction layer and two complementary conductive fabrics, the sound-driven triboelectric nano-power device includes a polyvinylidene fluoride-trifluoroethylene nanofiber membrane The invention uses an electrospun polyvinylidene fluoride-trifluoroethylene nanofiber membrane as a friction layer to capture sound energy in a sound-driven triboelectric nano-power device, and uses a conductive fabric as a common electrode to connect the wind-driven tribo-nano-power device and the sound-driven tribo-nano-electricity device. The organic combination of the wind-driven triboelectric nanogenerators not only facilitates the analysis of the coupling effect between the wind-driven triboelectric nanogenerators and the sound-driven triboelectric nanogenerators, but also improves their output performance.

Description

technical field [0001] The invention relates to the field of nanometer power generation, in particular to a triboelectric nanogenerator for capturing wind energy and sound energy. Background technique [0002] Triboelectricity is one of the most common phenomena in nature, but triboelectricity is difficult to collect and utilize, so it is often ignored. Triboelectric nanogenerators (TENGs), as an emerging energy harvesting technology, are dominated by displacement currents derived from Maxwell's equations, which capture mechanical energy and convert it into electrical energy through the coupling of triboelectricity and electrostatic induction. When two different materials are in contact, their surfaces will generate positive and negative electrostatic charges due to the difference in polarity. When the two materials are separated due to mechanical force, the positive and negative charges generated by the contact electrification will also be separated. This charge separation...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N1/04F03D9/25F03D1/06
CPCH02N1/04F03D9/25F03D1/06Y02E10/72
Inventor 吴永辉王飞宇郑海务王志新王清林张嘉伟
Owner HENAN UNIVERSITY
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