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Friction nanometer power generator for converting mechanical energy to electric energy and fabrication method of friction nanometer power generator

A nano-generator and mechanical energy technology, applied in the direction of friction generators, etc., to achieve the effects of improving compatibility, improving electrical output performance, and increasing contact area

Active Publication Date: 2019-03-01
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a frictional nanogenerator with a wide application range and strong electrical output performance in order to overcome the defects of the prior art that the application range is limited and the electrical output performance still has room for further improvement

Method used

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  • Friction nanometer power generator for converting mechanical energy to electric energy and fabrication method of friction nanometer power generator
  • Friction nanometer power generator for converting mechanical energy to electric energy and fabrication method of friction nanometer power generator
  • Friction nanometer power generator for converting mechanical energy to electric energy and fabrication method of friction nanometer power generator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] A method for preparing a triboelectric nanogenerator for converting mechanical energy into electrical energy, the specific steps are:

[0050] (1) preparing an electronegative friction layer;

[0051] (1.1) Disperse 0.2 g of nanofibers with a diameter of 150 to 300 nm in a mixture (mass ratio of 4:1) of 1 wt % acetic acid and tert-butanol at a speed of 8000 rpm to obtain a concentration of 0.5 wt % Then add 350 μL of cross-linking agent glutaraldehyde and stir at high speed for 5 minutes (the purpose of adding cross-linking agent glutaraldehyde is to prevent the airgel structure from collapsing easily when it collides), wherein the nanofibers are ethylene-vinyl alcohol The copolymer is prepared by uniformly mixing ethylene-vinyl alcohol copolymer and cellulose acetate butyrate, and adopting a two-component incompatible system melt blending phase separation method;

[0052] (1.2) After freezing the nanofiber suspension in a low-temperature refrigerator at -50°C for 20h,...

Embodiment 2

[0119] The method for preparing a triboelectric nanogenerator for converting mechanical energy into electrical energy, the specific steps are basically the same as in Example 1, the difference is that the electronegative friction layer and the electropositive friction layer are prepared by chemical modification, and the specific steps are as follows :

[0120] (1) preparing an electronegative friction layer;

[0121](1.1) Disperse nanofibers with a diameter of 150-300nm in a mixed solvent of water and tert-butanol (mass ratio 4:1), wherein the nanofibers are glycidyl methacrylate grafted polyethylene and acetate butyrate fiber After uniform mixing, it is prepared by melt blending phase separation method of two-component incompatible system;

[0122] (1.2) After adding polyterephthalic acid and epichlorohydrin, stir at a high speed at a speed of 13000 rpm to obtain a nanofiber suspension with a mass percentage concentration of 1.8%, wherein polyterephthalic acid is 20% of the ...

Embodiment 3

[0130] A method for preparing a triboelectric nanogenerator for converting mechanical energy into electrical energy, the specific steps are:

[0131] (1) preparing an electronegative friction layer;

[0132] (1.1) Disperse 0.2 g of nanofibers with a diameter of 250 to 380 nm in 20 wt % methanol and stir at a high speed at 11000 rpm to obtain a nanofiber suspension with a concentration of 2.2 wt %, then add 350 μL of crosslinking agent glutaraldehyde and stir at high speed 5 minutes, wherein the nanofibers are obtained by uniformly mixing polyamide 6 and cellulose acetate butyrate, and adopting a two-component incompatible system melt blending phase separation method;

[0133] (1.2) After freezing the nanofiber suspension in a low-temperature refrigerator at -60°C for 12h, freeze-drying at a temperature of -50°C for 48h to obtain the nanofiber airgel, the porosity of the nanofiber airgel is 98.5 %;

[0134] (1.3) Use a glass rod to immerse the surface of the airgel in a polyv...

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Abstract

The invention relates to a friction nanometer power generator for converting mechanical energy to electric energy and a fabrication method of the friction nanometer power generator. The fabrication method comprises the steps of packaging a flexible substrate layer I, an electrode material layer I, an electrical negative friction layer, an electrical positive friction layer, an electrode material layer II and a flexible substrate layer II according to a sequence, and then connecting the two flexible substrate layer at the outmost layer so that the electrical negative friction layer and the electrical positive friction layer are arranged at intervals to fabricate the friction nanometer power generator, wherein the electrical negative friction layer is fabricated by automatically assembly a friction electrical negative substance on a surface of aerogel. The fabricated friction nanometer power generator for converting the mechanical energy to the electric energy comprises the electrical negative friction layer and the electrical positive friction layer, and the electrical negative frication layer mainly comprises nanometer fiber of the self-assembled friction electrical negative substance. The fabrication method is simple, the fabricated product is low in cost, the sensitivity on mechanical energy of tiny biology is high, the electrical output performance is excellent, and the frication nanometer power generator has favorable application prospect in the field of self power supply sensing and wearability.

Description

technical field [0001] The invention belongs to the technical field of micro-nano energy sources and friction nanogenerators, and relates to a friction nanogenerator for converting mechanical energy into electrical energy and a preparation method thereof, in particular to an air condensation device capable of converting tiny biomechanical energy into electrical energy Rubber-based triboelectric nanogenerator and preparation method thereof. Background technique [0002] In recent years, electronic products have been widely used in many fields such as environmental protection, communication sensing, and health monitoring, so a large number of batteries are required to maintain their continuous use. However, the problem of short cycle life of ordinary batteries has not been effectively solved. In addition, waste batteries will also bring environmental problems. Therefore, it is an urgent task to find a renewable, sustainable and low-cost power generation device to alleviate thi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N1/04
Inventor 肖茹晏珊陆建伟宋炜郑裕磊王佳慧陈爽
Owner DONGHUA UNIV
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