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High-power-density needle-shaped liquid-solid coupling nano generator

A high power density, nanometer generator technology, applied in the direction of friction generators, etc., can solve the problems of low power density, many consumables, high cost, etc., and achieve the effect of high power density, strong economic advantages, and small footprint

Inactive Publication Date: 2021-07-20
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Existing liquid-solid nanogenerators are large in size, have many consumables, high cost, low efficiency, occupy a large space, and have low power density. Among them, the serious consumption of materials is the biggest obstacle to its scientific research and engineering application
[0003] The existing liquid-solid nanogenerators can be roughly summarized as follows: (1) It is difficult to prepare a uniform large-area surface for the triboelectric layer; (2) It is difficult to replace the nanogenerator after it fails; (3) It is difficult to mass-produce the nanogenerator
All of the above greatly limit the development of liquid-solid coupled nanogenerator systems.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] A needle-shaped liquid-solid coupled nanogenerator 1000 with high power density, comprising the following steps:

[0065] (1) depositing a silicon dioxide insulating layer 102 on the surface of the needle-shaped copper conductor;

[0066] (2) Dip a layer of polytetrafluoroethylene solution (AF1601) on the surface of the insulating layer 102;

[0067] (3) heating to solidify polytetrafluoroethylene into a solid triboelectric layer 103;

[0068] (4) Deposit copper conductive ring layer electrodes on the surface of solid triboelectric layer 103;

[0069] (5) connect wire, fix electrode, make single needle type nanogenerator 1000 (reference Figure 5 ).

[0070] The specific power generation forms of the generator 1000 include but are not limited to the following:

[0071] The droplets of the power generation liquid are dropped on the generator 1000, and then separated after contact, so as to generate electricity;

[0072] Or place the generator 1000 in the power gener...

Embodiment 2

[0074] A needle-shaped liquid-solid coupled nanogenerator 1000 with high power density, comprising the following steps:

[0075] (1) depositing a silicon dioxide insulating layer 102 on the surface of the needle-shaped copper conductor;

[0076] (2) Dip a layer of polytetrafluoroethylene solution (AF1601) on the surface of the insulating layer 102;

[0077] (3) heating to solidify polytetrafluoroethylene into a solid triboelectric layer 103;

[0078] (4) get another needle-shaped copper conductor;

[0079] (5) connect lead, fix electrode, make double-needle type nanogenerator 1000 (reference figure 1 ).

[0080] The specific power generation forms of the generator 1000 include but are not limited to the following:

[0081] The droplets of the power generation liquid are dropped on the generator 1000, and then separated after contact, so as to generate electricity;

[0082] Or place the generator 1000 in the power generation liquid, and the power generation liquid will con...

Embodiment 3

[0084] A needle-shaped liquid-solid coupled nanogenerator 1000 with high power density, comprising the following steps:

[0085] (1) depositing an insulating layer 102 on the surface of the first acicular conductor 101;

[0086] (2) Treat the silicon dioxide insulating layer 102 with a mixture of concentrated sulfuric acid and hydrogen peroxide

[0087] (3) self-assembling fluorine-containing silane molecules onto the surface of the silicon dioxide insulating layer 102;

[0088] (4) get another needle-shaped copper conductor;

[0089] (5) connect lead, fix electrode, make double-needle type nanogenerator 1000 (reference figure 2 ).

[0090] The specific power generation forms of the generator 1000 include but are not limited to the following:

[0091] The droplets of the power generation liquid are dropped on the generator 1000, and then separated after contact, so as to generate electricity;

[0092] Or place the generator 1000 in the power generation liquid, and the po...

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Abstract

The invention discloses a high-power-density needle-shaped liquid-solid coupling nano generator which comprises a first needle-shaped electrode and a second electrode, the first needle-shaped electrode comprises a first needle-shaped conductor, an insulating layer and a triboelectric layer, the insulating layer wraps the outer surface of the first needle-shaped conductor, The triboelectric layer coats the outer surface of the insulating layer and is insulated from the first needle-shaped conductor; the second electrode is electrically connected with the first needle-shaped conductor through a wire. The power generation mode of the power generator is that voltage and current are generated through the instantaneous action of power generation liquid, the triboelectric layer and the second electrode. The device has the advantages of high power generation power density, high efficiency, small size, small occupied space, low material consumption, low cost and the like, is simple to manufacture, and has extremely high economic advantages.

Description

technical field [0001] The invention relates to the technical field of liquid-solid nanogenerators, in particular to a needle-like liquid-solid coupling nanogenerator with high power density. Background technique [0002] Existing liquid-solid nanogenerators have large size, many consumables, high cost, low efficiency, large space occupation, and low power density. Among them, serious material consumption is the biggest obstacle to its scientific research and engineering application. [0003] The existing liquid-solid nanogenerators can be roughly summarized as follows: (1) It is difficult to prepare a uniform large-area surface for the triboelectric layer; (2) It is difficult to replace the nanogenerator after it fails; (3) It is difficult to mass-produce the nanogenerator. All of the above greatly limit the development of liquid-solid coupled nanogenerator systems. [0004] Therefore, it is crucial to find a nanogenerator with low cost, material saving, high efficiency an...

Claims

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Application Information

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IPC IPC(8): H02N1/04
CPCH02N1/04
Inventor 李津津王凯强
Owner TSINGHUA UNIV