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A graphene electret nanogenerator

A nano-generator and graphene technology, applied in the direction of circuits, electrical components, piezoelectric/electrostrictive/magnetostrictive devices, etc., can solve problems such as difficult to collect, avoid energy loss, simple process flow, high-efficiency Effect of Theoretical Product Life

Active Publication Date: 2018-05-18
广东德沃通风设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned piezoelectric nanogenerators and triboelectric nanogenerators mainly rely on external forces to directly act on the electrodes of the nanogenerators, thereby causing the nanogenerators to generate current, but there are abundant variable frequency and intensity in people's living environment. Most of these energies are still wasted, such as sound, air flow, human activities, etc., and these energies are still difficult to collect with the existing nanogenerator technology

Method used

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  • A graphene electret nanogenerator
  • A graphene electret nanogenerator
  • A graphene electret nanogenerator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] 1# graphene electret nanogenerator, refer to figure 1 , its specific structure includes:

[0057] bottom electrode 5;

[0058] the first insulating layer 4 on the bottom electrode 5;

[0059] the charge storage layer 3 on the first insulating layer 4;

[0060] the second insulating layer 2 on the charge storage layer 3;

[0061] The top electrode 1 on the second insulating layer 2 .

[0062] in:

[0063] The bottom electrode 5 is a phosphorus-doped N-type semiconductor silicon wafer with a thickness of 180 microns.

[0064] The first insulating layer 4 is a silicon dioxide layer with a thickness of 250 nanometers thermally oxidized on the semiconductor silicon wafer as the bottom electrode 5 .

[0065] Preparation of the charge storage layer 3: Methanol and deionized water are made into the first dispersant at a volume ratio of 1:1, and graphene oxide powder with a sheet size of 400 nm is put into the first dispersant to make graphite oxide The first suspension w...

Embodiment 2

[0070] 2# graphene electret nanogenerator, its structure is basically the same as embodiment 1, and difference is:

[0071] The bottom electrode 5 is a stilbene-doped P-type semiconductor silicon wafer with a thickness of 180 microns.

[0072] The first insulating layer 4 is a silicon dioxide layer with a thickness of 320 nanometers thermally oxidized on the semiconductor silicon wafer as the bottom electrode 5 .

[0073] Preparation of the charge storage layer 3: the partial graphene oxide powder with a sheet size of 500 nanometers was dropped into a methanol solution to prepare a first suspension with a partial graphene oxide concentration of 6 mg / mL, and the first suspension was scraped It is coated on the silicon dioxide layer as the first insulating layer by means of coating, and then flattened and dried with hot air to obtain a film with a thickness of 0.9 microns to form the charge storage layer 3 .

[0074] The second insulating layer 2 adopts a polyimide film with a ...

Embodiment 3

[0078] 3# graphene electret nanogenerator, its structure is basically the same as embodiment 1, and difference is:

[0079] The bottom electrode 5 is a phosphorus-doped N-type semiconductor silicon wafer with a thickness of 220 microns.

[0080] The first insulating layer 4 is a silicon dioxide layer with a thickness of 350 nanometers thermally oxidized on the semiconductor silicon wafer as the bottom electrode 5 .

[0081] Preparation of charge storage layer 3: Put graphene oxide powder and partially reduced graphene oxide powder with a sheet size of 600 nanometers into an ethanol solution to make the total concentration of graphene oxide and partially reduced graphene oxide 7 mg / mL The first suspension, the first suspension is coated on the silicon dioxide layer as the first insulating layer in the form of a drop film, and then flattened and dried with hot air to obtain a film with a thickness of 1.0 microns, which is made charge storage layer 3.

[0082] The second insula...

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Abstract

The invention discloses a graphene electret nanometer generator, the specific structure of which comprises: a bottom electrode made of a conductive silicon sheet; a first insulating layer on the bottom electrode; a charge storage layer on the first insulating layer; a charge storage A second insulating layer made of high molecular polymer on the layer; a top electrode made of reduced graphene oxide on the second insulating layer. The invention enriches the types of nanometer generators to collect a large number of sound waves in daily life and convert them into electric energy, so as to achieve the effect of collecting energy in a green environment. Compared with the nano-piezoelectric generator, during the operation of the graphene electret nano-generator of the present invention, no pressure contact is required between the electrode and the charge storage layer, which effectively avoids the problem of the friction belt caused by the operation of the nano-piezoelectric generator. The damage of the functional layer from the future has a higher theoretical product life; at the same time, it also avoids the energy loss caused by frictional heat generation and other phenomena, and the energy conversion efficiency is higher, up to about 13%.

Description

technical field [0001] The invention belongs to the technical field of environmental protection and green energy, and in particular relates to a graphene electret nano generator. Background technique [0002] In the past few decades, nanotechnology has made many breakthroughs in the fields of electronics, optoelectronics, materials science, and biochemistry, and new nanomaterials and devices have been continuously developed. This leads to the extremely important issue of energy supply in nanotechnology. The nanogenerator enables the energy supply system and the working system of nanodevices to reach the nanoscale at the same time, thereby maintaining the integrity of the self-contained power supply and the miniaturization of the nanodevices system. It lays the foundation for realizing the real miniaturization of the whole nano-device working system. [0003] Since its existence was confirmed in 2004, graphene, as a representative of two-dimensional materials, has attracted...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L41/113
CPCH10N30/30
Inventor 陈森赵玮赵春宝周志近陈刚韩萌
Owner 广东德沃通风设备有限公司