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High-output self-healing single-electrode friction nano generator and preparation method thereof

A nano-generator, high-output technology, applied in triboelectric generators and other directions, can solve problems such as not achieving good self-healing, and achieve the effects of improving mechanical stability and tensile properties, increasing dielectric constant, and simple preparation process

Active Publication Date: 2020-06-30
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In the Chinese patent published on September 24, 2019, the publication number is CN110277936A, and the title is "A Flexible and Repairable Frictional Nanogenerator and Its Application", a friction generator using hydrogel as a self-healing electrode is disclosed. Nanogenerator, design elastic material as the substrate of triboelectric nanogenerator, add carbon nanotube as conductive material, and introduce photothermal particles polydopamine and sodium borate into the flexible electrode, make it self-healing under infrared irradiation for 1min, with water Self-healing in 5 minutes in the environment, and finally encapsulated with highly flexible silica gel to realize the flexible application and repairable application of the friction nanogenerator, but its self-healing requires certain external conditions, and it does not achieve good self-healing in the air

Method used

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  • High-output self-healing single-electrode friction nano generator and preparation method thereof
  • High-output self-healing single-electrode friction nano generator and preparation method thereof
  • High-output self-healing single-electrode friction nano generator and preparation method thereof

Examples

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Embodiment 1

[0063] A method for preparing a high-output self-healing single-electrode friction nanogenerator, the steps of the method are as follows:

[0064] (1) Preparation of triboelectric layer 4

[0065] ①Hydrophobic treatment of the glass sheet is convenient for subsequent spin-coating and film removal: take a petri dish, put the glass sheet, pour trimethylchlorosilane (TMCS), immerse the glass sheet, treat it in the fume hood for 15 minutes, and then use it separately Ionized water, ethanol, and dry with a hair dryer for later use.

[0066] ② Take PDMS prepolymer (Dow Corning 184 silicone rubber component A) and add it to chloroform, stir magnetically, dilute PDMS, add carbon nanotubes (CNTs) dispersion solution (carbon nanotubes concentration is 30mg / 250mL), at 75 ℃ , magnetically stirred for 2 hours, the solvent was evaporated, and the mixed solution was placed in an air-blast drying oven at 80°C for 1.5 hours to ensure that the solvent was completely evaporated. Then add PDMS ...

Embodiment 2

[0075] A method for preparing a high-output self-healing single-electrode friction nanogenerator, the steps of the method are as follows:

[0076] (1) Preparation of triboelectric layer 4

[0077] ① Hydrophobic treatment is performed on the glass sheet to facilitate subsequent spin-coating and film removal: take a petri dish, put the glass sheet, pour TMCS, immerse the glass sheet, and treat it in a fume hood for 15 minutes, then wash it with deionized water and absolute ethanol respectively , and dry with a hair dryer for later use.

[0078] ② Take the PDMS prepolymer (Dow Corning 184 silicone rubber component A) and add it to chloroform, stir magnetically, dilute PDMS, add carbon nanotubes (CNTs) predispersion solution (the concentration of carbon nanotubes is 30mg / 250mL), at 70℃ Stir for 3 hours under magnetic force to evaporate the solvent, and put the mixed solution in a blast drying oven at 85° C. for 1 hour to ensure that the solvent is completely evaporated. Then add...

Embodiment 3

[0087] A method for preparing a high-output self-healing single-electrode triboelectric nanogenerator is the same as in Example 1.

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Abstract

The invention relates to a high-output self-healing single-electrode friction nano generator and a preparation method thereof, and belongs to the technical field of nano energy. The high-output self-healing single-electrode friction nano generator includes a wire, a triboelectrification layer which is in contact with the skin, and the cross-linking layer, the self-healing electrode layer and the supporting layer which hare sequentially located below the triboelectrification layer. The triboelectrification layer is a CNTs / PDMS composite film; the cross-linking layer is a mixture formed by PDMSand PMHS; the self-healing electrode layer is PVA hydrogel added with graphene and glycerin; the PDMS film serves as support layer. According to the nano-generator, graphene is added into PVA hydrogelto serve as a conductive reinforcing phase, meanwhile, crystal lattices are refined, and the mechanical property of the material is improved; glycerol is added, so that rapid self-healing can be realized in air; CNT is added into PDMS to serve as a reinforcing phase, so that the friction layer has high dielectric property, and the output of the friction nano generator is improved. The cross-linking agent enables the self-healing electrode layer and the friction layer to have good physical cross-linking.

Description

technical field [0001] The invention relates to a high-output self-healing single-electrode friction nanometer generator and a preparation method thereof, belonging to the technical field of nanometer energy. Background technique [0002] In the field of nano-energy, triboelectric nanogenerator (TENG) based on triboelectrification and electrostatic induction is a new energy technology. Since it was proposed in 2012, researchers have developed various forms of TENG, and adopted various methods and measures to improve the output performance of TENG. [0003] TENG has four basic working modes: contact separation, horizontal sliding, single electrode and independent layer. Among them, TENG in single-electrode mode is usually composed of an electrostatic induction electrode layer and a triboelectric layer. Because there is only one bottom electrode, there is no restriction on the other electrode compared to other electrification modes, so it has a wide range of applications in w...

Claims

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Application Information

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IPC IPC(8): H02N1/04
CPCH02N1/04
Inventor 孙娜刘盼雷
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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