KR101767151B1 - Triboelectric generator having embedded electrodes - Google Patents

Triboelectric generator having embedded electrodes Download PDF

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Publication number
KR101767151B1
KR101767151B1 KR1020150063892A KR20150063892A KR101767151B1 KR 101767151 B1 KR101767151 B1 KR 101767151B1 KR 1020150063892 A KR1020150063892 A KR 1020150063892A KR 20150063892 A KR20150063892 A KR 20150063892A KR 101767151 B1 KR101767151 B1 KR 101767151B1
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South Korea
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substrate
electrode layer
polymer layer
polymer
amp
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KR1020150063892A
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Korean (ko)
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KR20160132225A (en
Inventor
최영만
장윤석
우규희
김광영
조정대
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한국기계연구원
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02NELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N1/00Electrostatic generators or motors using a solid moving electrostatic charge carrier
    • H02N1/04Friction generators

Abstract

According to an embodiment of the present invention, there is provided a tribo-charged electricity generating element comprising: a first substrate including an embedded first electrode layer; A polymer layer stacked on a first surface of the first substrate; A second electrode layer laminated on the polymer layer; And a second substrate stacked on the second electrode layer.

Description

[0001] The present invention relates to a triboelectric generator having embedded electrodes,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a triboelectric charging element, and more particularly, to a triboelectric charging element including an embedded electrode.

Recently, a triboelectric power plant using triboelectricity has been studied as a kind of nano generator. 1, the triboelectric power plant comprises an upper substrate 1, an upper electrode 2 deposited on the lower surface of the upper substrate, a lower substrate 3, a lower electrode 4 sequentially stacked on the upper surface of the lower substrate, And a polymer layer (5). The polymer layer 5 and the upper electrode 2 should be physically separated from each other by a predetermined distance, and a structure 6 such as a spacer or a spring is installed at a predetermined distance therefrom.

When an external force such as bending is applied to the triboelectric generating element, static electricity is generated while the polymer layer 5 and the upper electrode 2 come into contact with or separate from each other. The static electricity generated at this time causes the upper electrode 2 and the lower electrode 4, To an external load (for example, an electric circuit or a storage battery) through the electric power supply.

However, in such a conventional triboelectric generating element, since a structure 6 such as a spacer or a spring for spacing a gap between the polymer layer and the electrode is required for contact and separation between the polymer layer and the electrode, There is a problem that the device is not suitable for a flexible and compact application.

Patent Document 1: U.S. Published Patent Application No. 2013-0049531 (published Feb. 28, 2013) Patent Document 2: U.S. Published Patent Application No. 2014-0084748 (published on Mar. 23, 2014)

According to an embodiment of the present invention, there is provided a triboelectric power plant in which a structure such as a spacer or a spring is not required between an electrode and a polymer layer, and a substrate, an electrode, and a polymer layer can be formed in a single film form.

According to an embodiment of the present invention, there is provided a tribo-charged electricity generating element comprising: a first substrate including an embedded first electrode layer; A polymer layer stacked on a first surface of the first substrate; A second electrode layer laminated on the polymer layer; And a second substrate stacked on the second electrode layer.

According to an embodiment of the present invention, there is provided a method of manufacturing a triboelectric power plant, the method comprising: forming a predetermined pattern on a first surface of a first substrate; Forming a first electrode layer in the depressed pattern; And attaching a second substrate on which a second electrode layer and a polymer layer are sequentially stacked, with the first substrate such that the polymer layer is in contact with a first surface of the first substrate, Wherein the surface of the first substrate is lower than the first surface of the first substrate.

According to an embodiment of the present invention, an electrode is embedded in a substrate, so that a separate spacer or a spring structure is not required, and the substrate and the polymer layer can be directly bonded.

According to an embodiment of the present invention, since a separate structure is not required between the electrode and the polymer layer, the substrate, the electrode, and the polymer layer can be fabricated into a single film in which the polymer layers are integrally laminated, This has the advantage.

1 is a view for explaining a conventional triboelectric power plant,
2 is a cross-sectional view of a triboelectric power plant according to an embodiment of the present invention,
3 is a view illustrating a step of forming a relief pattern on a first substrate according to an embodiment,
4 is a view for explaining a step of forming a first electrode layer on a depressed pattern of a first substrate according to an embodiment,
5 is a view illustrating a method of forming an engraved pattern and a first electrode layer on a first substrate by a roll imprinting method according to an embodiment,
6 is a view illustrating a process of laminating a second electrode layer and a polymer layer on a second substrate according to an embodiment,
FIG. 7 is a view illustrating a step of forming a triboelectric charging plant by attaching a first substrate and a second substrate according to an embodiment;
Fig. 8 is a view for explaining the principle of the triboelectrifier according to the embodiment to perform frictional electrification by external pressure.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features, and advantages of the present invention will become more readily apparent from the following description of preferred embodiments with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments disclosed herein are provided so that the disclosure can be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

In this specification, when an element is referred to as being 'above' (or 'below', 'right', or 'left') of another element, it may be above (or below, ) Or it may mean that a third component may be interposed therebetween. Also, in the figures, numerical values such as length, width, thickness, etc. of the components are exaggerated for an effective explanation of the technical content.

Also, in this specification, expressions such as 'up', 'down', 'left', 'right', 'front', and 'rear' used to describe the positional relationship between components mean a direction or a position as an absolute reference And is a relative expression used for convenience of description based on the drawings when describing the present invention with reference to the respective drawings.

Where the terms first, second, etc. are used herein to describe components, these components should not be limited by such terms. These terms have only been used to distinguish one component from another. The embodiments described and exemplified herein also include their complementary embodiments.

In the present specification, the singular form includes plural forms unless otherwise specified in the specification. The terms "comprise" and / or "comprising" used in the specification do not exclude the presence or addition of one or more other elements.

Hereinafter, the present invention will be described in detail with reference to the drawings. Various specific details are set forth in the following description of specific embodiments in order to provide a more detailed description of the invention and to aid in understanding the invention. However, it will be appreciated by those skilled in the art that the present invention may be understood by those skilled in the art without departing from such specific details. In some cases, it is noted that parts of the invention that are not commonly known in the art and are not largely related to the invention are not described in order to avoid confusion in describing the invention.

2 is a cross-sectional view of a triboelectric charging plant according to an embodiment of the present invention. Referring to the drawings, a triboelectric power plant according to an embodiment includes a first substrate 10, a first electrode layer 20, a second substrate 30, a second electrode layer 40, and a polymer layer 50 do.

The first substrate 10 is disposed at the bottom in the drawing. The first electrode layer 20 is embedded in the first substrate 10. That is, the first electrode layer 20 may be formed in a pattern formed on the upper surface of the first substrate 10 at a recessed angle.

A polymer layer 50 is laminated on the upper surface of the first substrate 10. The second electrode layer 40 is laminated on the polymer layer 50 and the second substrate 30 is laminated on the second electrode layer 40. Thereafter, a load 60 for using (or charging) electricity generated by the triboelectrifying element is electrically connected to the first electrode layer 20 and the second electrode layer 40 by the conductor 65.

The surface of the first electrode layer 20 formed in the depressed pattern on the surface of the first substrate 10 is formed to be lower than the surface of the first substrate 10 according to the preferred embodiment of the present invention. That is, as shown in the figure, the structure has a space 25 between the first electrode layer 20 and the polymer layer 50. Accordingly, the first electrode layer 20 and the polymer layer 50 are not in electrical contact with each other in a state in which no external pressure is applied to the triboelectrifier element (that is, in the state shown in FIG. 2) The first electrode layer 20 and the polymer layer 50 are brought into electrical contact with each other, so that a current flows through the conductive line 65.

As an exemplary method for manufacturing such a triboelectric power plant, a first substrate 10 in which a first electrode layer 20 is embedded and a second substrate 10 in which a second electrode layer 40 and a polymer layer 50 are stacked 30 and the first substrate 10 and the second substrate 30 are bonded to each other with the polymer layer 50 contacting the upper surface of the first substrate 10 to form a triboelectric power plant can do. As another exemplary method, the first electrode layer 20, the polymer layer 50, the second electrode layer 40, and the second substrate 30 are sequentially formed on the lowest first substrate 10, for example, The triboelectric power plant may be laminated, and the present invention is not limited to such a specific manufacturing method.

The specific dimensions of the illustrated triboelectric charging plant can be designed differently according to the embodiment. In one example, the first substrate 10 and the second substrate 30 each have a thickness of about 125 micrometers (um), the first electrode layer 20 is about 1 um thick, and the polymer layer 50 is about 100 um thick The triboelectric power plant may have a flexible film form having a total thickness of about 350 um. However, these numerical values are only one example, and it is needless to say that the thickness of each layer can be variously designed and implemented according to practical application of the power plant.

A method of manufacturing a triboelectric charging plant according to an embodiment will now be described with reference to FIGS. 3 to 7. FIG.

3 (a) and 3 (b) schematically illustrate a state in which an engraved pattern is formed on a first substrate according to an embodiment. FIG. 3 (a) 10).

Referring to FIG. 1, a predetermined pattern 11 is formed on the upper surface of the first substrate 10 by engraving. In the illustrated embodiment, the predetermined pattern is, for example, a mesh shape. In another alternative embodiment, the engraved pattern 11 may be of any shape. It is preferable that the engraved pattern is connected to the entire pattern. That is, if the pattern is connected as a whole, the engraved pattern may be any arbitrary shape.

In one embodiment, the first substrate 10 is preferably a flexible substrate. For example, the first substrate may be formed of at least one material selected from the group consisting of polyethylene terephthalate (PET), polydimethylsiloxane (PDMS), polymethylmethacrylate (PMMA), polyurethane (PUA), polyimide, SU- A plastic film, a textile, a fiber, a wafer, and a glass.

4 is a view showing a state in which a first electrode layer 20 is formed on a depressed pattern 11 of a first substrate 10 according to an embodiment. 4A is a side view of the first substrate 10 filled with the first electrode layer 20 in the engraved pattern 11 and FIG. 4B is a perspective view of the first substrate 10 at this time. to be.

Referring to FIG. 4, after the engraved pattern 11 of the first substrate 10 as shown in FIG. 3 is formed, the engraved pattern 11 is filled with a conductive ink or a conductive paste, the first electrode layer 20 may be formed as shown in FIG. In the illustrated embodiment, since the engraved pattern 11 is patterned into a mesh shape, the second electrode layer 20 is also embedded in the first substrate 10 in a mesh-like pattern. Since the engraved patterns 11 are connected as a whole, the second electrode layer 20 is electrically and integrally connected to the entire mesh shape.

4 (c) schematically shows a state after the first substrate 10 on which the second electrode layer 20 is formed is sintered. When the conductive ink is used as the second electrode layer, when the substrate having the second electrode layer 20 is sintered by heat or ultraviolet rays, the voids between the ink solids disappear and the volume of the electrode layer is reduced. As a result, This has a dent pattern. Accordingly, the surface of the first electrode layer 20 becomes lower than the surface of the first substrate 10.

In one embodiment, the ink or conductive paste for the electrode used in the first electrode layer 20 may be a composition containing any metal. For example, the first electrode layer 20 may include at least one of Fe, Ag, Au, Cu, Cr, W, Al, Mo, Zn, Ni, Pt, Pd, Co, In, Mn, Si, Ta, V, Ru, Ir, Zr, Rh and Mg. 3 and 4, that is, the step of forming a predetermined pattern on the first substrate 10 by embossing and forming the first electrode layer 20 on the engraved pattern 11 may be performed by using one of known methods . ≪ / RTI > For example, such a process may be performed using any one of thermal roll imprinting, hot embossing, nanoimprint lithography, UV (ultraviolet) imprinting, molding, and laser scribing have.

In this regard, FIG. 5 illustrates a method of forming the engraved pattern 11 and the first electrode layer 20 on the first substrate 10 by a roll imprinting method.

The roll imprinting apparatus according to the illustrated embodiment may include a heating roll 110, an indenting roll 120, and a doctor blade 130. On the surface of the heating roll 110, an imprinting stamp having a predetermined pattern P to be imprinted on the first substrate 10 is mounted. The press-in roll 120 is disposed in parallel with the heating roll 110 below the heating roll 110 and is arranged so that the first substrate 10 can pass between the heating roll 110 and the press-in roll 120 . An engraved pattern 11 is imprinted on the upper surface of the first substrate 10 according to the pattern P when the first substrate 10 passes between the two rolls 110 and 120.

Thereafter, an ink dispenser (not shown) ejects the conductive ink 21 onto the surface of the first substrate 10 and the conductive ink 21 is evenly filled in the engraved pattern 11 by the doctor blade 130, An electrode layer 20 is formed and sintered by heat or ultraviolet rays to form an embedded first electrode layer 20 having a shape in which the surface of the first electrode layer 20 is lower than the surface of the first substrate 10 as shown in FIG. .

An exemplary method of forming the second electrode layer 40 and the polymer layer 50 on the second substrate 30 will now be described with reference to FIG.

First, the second substrate 30 is prepared as shown in Fig. 6 (a). The second substrate 30 may be made of the same or similar material as the first substrate. In one embodiment, the second substrate 30 is formed of a material selected from the group consisting of polyethylene terephthalate (PET), polydimethylsiloxane (PDMS), polymethylmethacrylate (PMMA), polyurethane (PUA), polyimide, And may be made of at least one material selected from the group consisting of SU-8 polymers, plastic films, textiles, fibers, wafers, and glass.

Then, as shown in FIG. 6 (b), the second electrode layer 40 is laminated on the upper surface of the second substrate 30. The second electrode layer 40 may be made of any material having electrical conductivity. In one embodiment, the second electrode layer 40 may include at least one of indium tin oxide (ITO), indium zinc oxide (IZO), Ga-doped ZnO, gold nanowires, And may include at least one material selected from the group consisting of Ag paste, Dielectric / Metal / Dielectric (DMD), graphene, carbon nanotube, and conductive polymer. The second electrode layer 40 may be deposited using one of various deposition methods such as spray coating, roll coating, and vacuum deposition.

Next, the second electrode layer 40 is laminated on the second substrate 30, and then the polymer layer 50 is laminated on the second electrode layer 40 as shown in FIG. 6 (c). In one embodiment, the polymer layer 50 may be a copolymer comprising polyimide or polyimide, a copolymer comprising polyacrylic acid or polyacrylic acid, a copolymer comprising polystyrene or polystyrene, a polysulfite or polysulfite A copolymer comprising a polyamic acid or a polyamic acid, a copolymer comprising a polyamine or a polyamine, a copolymer comprising polyvinyl alcohol, polyallylamine, polyacrylic acid, polydimethylsiloxane (PDMS), polymethyl methacrylate (PMMA), SU-8 polymer, and polyurethane (PUA).

The polymer layer 50 may be laminated by any conventional lamination method. A method such as bar coating, spray coating, printing, doctor blade coating, slot die coating, or the like may be used for laminating the polymer layer 50 in one embodiment. A spin coating method, a drop coating method, a thermal evaporation method, an electron beam evaporation method, or a sputtering method may be used.

The second electrode layer 40 and the polymer layer 50 are stacked as shown in FIG. 6, as shown in FIGS. 3 to 5, forming the first substrate 10 in which the first electrode layer 20 is embedded, The second substrate 30 is attached to the first substrate 10 such that the polymer layer 50 is in contact with the upper surface of the first substrate 10. 7, the first substrate 10, the polymer layer 50, the second electrode layer 40, and the second substrate 30, in which the first electrode layer 20 is embedded, are stacked in this order Friction charging power plant self-manufactured. Since the surface of the embedded first electrode layer 20 is lower than the surface of the first substrate 10 at this time, a space 25 is formed between the first electrode layer 20 and the polymer layer 50 and the first electrode layer 10 And the polymer layer 50 are not in electrical contact with each other.

Fig. 8 schematically shows a triboelectric charging plant according to an embodiment performing triboelectric charging by external pressure. It is assumed that an arbitrary load 60 such as an electric circuit or a capacitor is electrically connected to the first electrode layer 20 and the second electrode layer 40 by the conductor 65. [

7, there is a space 25 between the first electrode layer 20 and the polymer layer 50, and they are not in electrical contact with each other. 8, when the external pressure is applied, the polymer layer 50 is deformed and the space 25 between the embedded electrode and the polymer layer is filled, so that the first electrode layer 20 and the polymer layer 50 The current flows through the contact 27 and the charge moves from the first electrode layer 20 embedded in the polymer layer 50 to the second electrode layer 40 by the charge charged in the polymer layer 50.

As described above, since the first electrode layer 20 is embedded in the first substrate 10, the triboelectric power generator according to an embodiment of the present invention can be manufactured in a conventional manner, And thus, the triboelectric power plant can be formed into a single film type, so that it can be suitably used for applications requiring a compact and flexible structure.

As described above, although the present invention has been described with reference to the limited embodiments and drawings, the present invention is not limited to the above embodiments. It will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the present invention as defined by the appended claims. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the equivalents of the claims, as well as the claims.

10: first substrate
20: first electrode layer
30: second substrate
40: Second electrode layer
50: polymer layer

Claims (12)

  1. In the triboelectric charging element,
    A first substrate (10) comprising an embedded first electrode layer (20);
    A polymer layer (50) deposited on the first surface of the first substrate;
    A second electrode layer (40) laminated on the polymer layer; And
    And a second substrate (30) laminated on the second electrode layer,
    Wherein the first electrode layer (20) is formed in a predetermined pattern formed on the first surface of the first substrate at an obtuse angle, and a space exists between the first electrode layer and the polymer layer.
  2. delete
  3. The method according to claim 1,
    If the polymer layer and the first electrode layer are not in electrical contact with each other while no external pressure is applied to the triboelectrification element, if the external pressure is applied, the polymer layer and the first electrode layer are electrically contacted The triboelectric generating element is characterized by.
  4. The method according to claim 1,
    Wherein the first electrode layer is embedded in the first substrate in a mesh-like pattern.
  5. The method according to claim 1,
    Wherein at least one of the first substrate and the second substrate is at least one selected from the group consisting of polyethylene terephthalate (PET), polydimethylsiloxane (PDMS), polymethylmethacrylate (PMMA), polyurethane (PUA), polyimide, , SU-8 polymer, a plastic film, a textile, a fiber, a wafer, and a glass.
  6. The method according to claim 1,
    Wherein the polymer layer is selected from the group consisting of a copolymer comprising polyimide or polyimide, a copolymer comprising polyacrylic acid or polyacrylic acid, a copolymer comprising polystyrene or polystyrene, a copolymer comprising polysulfite or polysulfite, (PDMS), polymethylmethacrylate (PMMA), succinic anhydride (SU), polyvinyl alcohol, polyallyl amine, polyacrylic acid, polydimethylsiloxane 8 polymer, and polyurethane (PUA). ≪ RTI ID = 0.0 > 8. < / RTI >
  7. A method of manufacturing a triboelectric power plant,
    Forming a predetermined pattern on the first surface of the first substrate (10);
    Forming a first electrode layer (20) in the depressed pattern; And
    The second substrate 30 in which the second electrode layer 40 and the polymer layer 50 are stacked in order is formed so that the polymer layer is in contact with the first surface of the first substrate, ; ≪ / RTI >
    Wherein the surface of the first electrode layer is lower than the first surface of the first substrate.
  8. 8. The method of claim 7,
    The step of embossing a predetermined pattern on the first substrate and forming the first electrode layer may be performed by any one of thermal roll imprinting, hot embossing, nano imprint lithography, UV imprinting, molding, and laser scribing Wherein said method comprises the steps of:
  9. 8. The method of claim 7,
    Wherein at least one of the first substrate and the second substrate is at least one selected from the group consisting of polyethylene terephthalate (PET), polydimethylsiloxane (PDMS), polymethylmethacrylate (PMMA), polyurethane (PUA), polyimide, , SU-8 polymer, plastic film, textile, fiber, wafer, and glass. The method of manufacturing a triboelectric power plant according to claim 1,
  10. 8. The method of claim 7,
    Wherein the polymer layer is selected from the group consisting of a copolymer comprising polyimide or polyimide, a copolymer comprising polyacrylic acid or polyacrylic acid, a copolymer comprising polystyrene or polystyrene, a copolymer comprising polysulfite or polysulfite, (PDMS), polymethylmethacrylate (PMMA), succinic anhydride (SU), polyvinyl alcohol, polyallyl amine, polyacrylic acid, polydimethylsiloxane 8 polymer, and polyurethane (PUA). ≪ RTI ID = 0.0 > 8. < / RTI >
  11. 8. The method of claim 7,
    Wherein when an external pressure is applied to the triboelectrification element, the polymer layer and the first electrode layer are in electrical contact with each other.
  12. 8. The method of claim 7,
    Wherein the engraved pattern is a mesh-like pattern.
KR1020150063892A 2015-05-07 2015-05-07 Triboelectric generator having embedded electrodes KR101767151B1 (en)

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LU100485B1 (en) * 2017-10-19 2019-04-25 Luxembourg Institute Of Science And Tech List Triboelectric member with embossed honeycomb pattern
CN108696173A (en) * 2018-03-05 2018-10-23 纳智源科技(唐山)有限责任公司 Friction generator, preparation method with composite film electrode and power-generating shoe

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KR100656357B1 (en) 2005-10-25 2006-12-05 한국전자통신연구원 Transparent conductive substrate with metal grid and dye-sensitized solar cell having the same
US20130049531A1 (en) * 2011-08-30 2013-02-28 Georgia Tech Research Corporation Triboelectric Generator
CN103752357A (en) 2013-12-30 2014-04-30 北京大学 Self-driven digital micro-chute based on friction generator
KR101474980B1 (en) * 2014-02-13 2014-12-22 한국기계연구원 Thermal roll imprinting method and metal grid mesh plastic substrate manufactured thereby
KR101476742B1 (en) 2013-11-14 2014-12-29 포항공과대학교 산학협력단 Method for manufacturing nano generator

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KR100656357B1 (en) 2005-10-25 2006-12-05 한국전자통신연구원 Transparent conductive substrate with metal grid and dye-sensitized solar cell having the same
US20130049531A1 (en) * 2011-08-30 2013-02-28 Georgia Tech Research Corporation Triboelectric Generator
KR101476742B1 (en) 2013-11-14 2014-12-29 포항공과대학교 산학협력단 Method for manufacturing nano generator
CN103752357A (en) 2013-12-30 2014-04-30 北京大学 Self-driven digital micro-chute based on friction generator
KR101474980B1 (en) * 2014-02-13 2014-12-22 한국기계연구원 Thermal roll imprinting method and metal grid mesh plastic substrate manufactured thereby

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