KR102324485B1 - Spontaneously self-charged hybrid energy harvesting and storage device and the manufacturing method thereof - Google Patents

Abstract

The present invention relates to a spontaneous self-rechargeable hybrid energy generation and storage device and a manufacturing method thereof. According to an embodiment of the present invention, the self-rechargeable hybrid energy generation and storage device comprises: one pair of asymmetric electrodes; an electrolyte layer formed to cover the pair of asymmetric electrodes; and a friction layer for power generation formed to cover the electrolyte layer. Provided is the self-rechargeable device capable of spontaneously storing electrical energy generated by external friction in the electrode and electrolyte layer.

Description

Spontaneous self-charging hybrid energy generation and storage device and manufacturing method thereof

The present invention relates to a spontaneous self-rechargeable hybrid energy generation and storage device and a method for manufacturing the same.

Wearable devices made of lightweight materials are becoming a part of next-generation mobile electronic device systems. The wearable device may provide various information necessary for real life as smart watches, healthcare wristbands, e-skin, and smart textiles.

However, these devices need to be small, light, flexible, washable, and self-sufficient because of the above characteristics. Conventional devices have a problem in that practicality is reduced by using a method of replacing or charging batteries due to the characteristics of wearable devices that need to be moved.

From this point of view, energy harvesting (Energy harvesting) technology that can continuously receive energy has emerged. In particular, triboelectric nanogenerators (TENGs) are attracting great attention because of their advantages of having various shapes and types. Recently, fiber-based triboelectric nanogenerators have shown excellent energy harvesting performance and have realized self-charging energy units.

However, triboelectric nanogenerators to date have been used in conjunction with energy storage devices and require additional electrical circuits and connections. In order to realize a small and functional wearable device, the volume of each component must be minimized and functionalized, and the triboelectric nanogenerator, which requires an energy storage device, clearly has its limitations.

In the spontaneous self-rechargeable hybrid energy generation and storage device according to the present invention, the energy generation unit and the storage unit are integrally configured to solve the above-described problems.

The energy generation and storage device of the present invention not only generates energy but also stores energy spontaneously in a fiber supercapacitor.

However, the problems to be solved by the present invention are not limited to those mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

A spontaneous self-charging hybrid energy generation and storage device according to an aspect of the present invention includes: a pair of asymmetric electrodes; an electrolyte layer formed to cover the pair of asymmetric electrodes; and a friction layer for power generation formed to cover the electrolyte layer.

In one embodiment, the pair of asymmetric electrodes may be a supercapacitor.

In one embodiment, the pair of asymmetric electrodes may include a carbon material.

In one embodiment, the carbon material is carbon nanofibers, and may be in the form of a fiber bundle aligned in a line.

In one embodiment, the pair of asymmetric electrodes may include carbon nanofibers twisted coaxially.

In one embodiment, the carbon nanofibers may be twisted 4 to 6 times per inch.

In one embodiment, the size ratio of the pair of asymmetric electrodes may be 1:1.1 to 1:3.

In one embodiment, the electrolyte layer is selected from the group consisting of H ₃ PO ₄ -PVA (polyvinyl alcohol), H ₂ SO ₃ (sulfuric acid)-PVA, KOH-PVA, NaOH-PVA and NaCl-PVA It may include one or more.

In one embodiment, the friction layer for power generation includes P (VDF-TrFE-CFE) (Polyvinylidene fluoride-trifluoroethylene-chlorofluoroethylene), P (VDF-TrFE-CTFE) (Polyvinylidene fluoride-trifluoroethylene-chlorotrifluoroethylene) or both may be doing

In one embodiment, a negative charge may be formed on the outer surface of the friction layer for power generation through mechanical friction applied to the friction layer for power generation.

In one embodiment, a positive charge is formed at the boundary between the friction layer for power generation and the electrolyte layer, and a positive charge, a negative charge, or both may be formed in the electrolyte layer.

In one embodiment, the pair of asymmetric electrodes may be an anode and a cathode, respectively, and charge separation in the electrolyte layer may be induced by a potential difference induced to the anode and the cathode.

In an embodiment, the pair of asymmetric electrodes may have a potential difference, and electric energy may be charged and stored by the potential difference.

According to another aspect of the present invention, there is provided a method for manufacturing a spontaneous self-charging hybrid energy generation and storage device, comprising: preparing a pair of asymmetric electrodes; forming an electrolyte layer on the surface of the pair of asymmetric electrodes, respectively; coaxially twisting the one-phase asymmetric electrode to form a supercapacitor; and forming a friction layer for power generation on the surface of the supercapacitor.

In one embodiment, the step of forming the electrolyte layer, the step of forming the friction layer for power generation, or both of these steps may be using brush printing.

A fabric according to another aspect of the present invention is manufactured using the hybrid energy generation and storage device of the present invention.

The spontaneous self-charging hybrid energy generation and storage device according to the present invention can provide a device in which the energy generation unit and the storage unit are integrally configured to solve the above-described problems.

The energy generation and storage device of the present invention can not only generate energy but also spontaneously store energy in a fiber supercapacitor.

In addition, the energy generation and storage device according to the present invention can function as a self-charging system of a new lightweight fiber/fabric-based electronic device platform.

1 is a cross-sectional view of a spontaneous self-recharging hybrid energy generation and storage device according to the present invention.
2 is a cross-sectional SEM image of a spontaneous self-charging hybrid energy generation and storage device according to the present invention.
3 is a conceptual diagram illustrating a manufacturing process of a hybrid energy generation and storage device according to an aspect of the present invention.
4 is a conceptual diagram illustrating a process of storing electrical energy generated through mechanical friction in a hybrid energy storage and power generation device according to the present invention.
5A is a cyclic voltammetry measurement graph for the devices of Example 1 and Comparative Example 1. FIG.
FIG. 5B is a graph showing the cyclic voltammetry measurement of the device of Example 1 while changing the scan rate.
6 is a graph showing galvanostatic charge/discharge curves for the devices of Example 1 and Comparative Example 1.
7 is a graph showing peak-to-peak (pp; peak-to-peak) power and voltage according to the mechanical friction frequency of the energy generation and storage device of Example 1.
8 is a graph showing peak-to-peak power and voltage according to types of mechanical friction of the energy generation and storage device of Example 1. FIG.
9 is a graph showing the measurement of potential energy in the device after mechanical friction is applied to the energy generation and storage device of Example 1. Referring to FIG.
10 is a graph showing the potential energy charged in an external capacitor connected to the energy generation and storage device of Example 1 that has been washed.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. However, since various changes may be made to the embodiments, the scope of the patent application is not limited or limited by these embodiments. It should be understood that all modifications, equivalents and substitutes for the embodiments are included in the scope of the rights.

The terms used in the examples are used for description purposes only, and should not be construed as limiting. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present specification, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the embodiment belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

In addition, in the description with reference to the accompanying drawings, the same components are given the same reference numerals regardless of the reference numerals, and the overlapping description thereof will be omitted. In the description of the embodiment, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the embodiment, the detailed description thereof will be omitted.

In addition, in describing the components of the embodiment, terms such as first, second, A, and B may be used. These terms are only for distinguishing the components from other components, and the essence, order, or order of the components are not limited by the terms.

Components included in one embodiment and components having a common function will be described using the same names in other embodiments. Unless otherwise stated, a description described in one embodiment may be applied to another embodiment, and a detailed description in the overlapping range will be omitted.

A spontaneous self-charging hybrid energy generation and storage device according to an aspect of the present invention includes: a pair of asymmetric electrodes; an electrolyte layer formed to cover the pair of asymmetric electrodes; and a friction layer for power generation formed to cover the electrolyte layer.

1 is a cross-sectional view of a spontaneous self-recharging hybrid energy generation and storage device according to the present invention.

Referring to FIG. 1 , the spontaneous self-charging hybrid energy generation and storage device according to the present invention includes a pair of asymmetric electrodes 100 , an electrolyte layer 200 and a friction layer 300 for power generation, and the electrolyte layer Reference numeral 200 covers the pair of asymmetric electrodes 100 , and the friction layer 300 for power generation covers the electrolyte layer.

A pair of asymmetric electrodes may mean that the cross-sectional areas of the electrodes are different.

2 is a cross-sectional SEM image of a spontaneous self-charging hybrid energy generation and storage device according to the present invention.

The scale bar at the lower right of the SEM image of FIG. 2 is 100 μm, and referring to FIG. 2 , it can be seen that a pair of electrodes, an electrolyte layer, and a friction layer for power generation are sequentially formed from the center of the device to the outside. have.

In the spontaneous self-charging hybrid energy generation and storage device according to the present invention, a capacitor responsible for power storage is located in the center and a friction part for harvesting the generated triboelectric electricity is located on the outer surface.

In the spontaneous self-charging hybrid energy generation and storage device according to the present invention, an asymmetric electrode may be energized through an electrolyte.

According to an embodiment of the present invention, the pair of asymmetric electrodes may be a supercapacitor.

A supercapacitor is a capacitor having a fairly high capacitance, and is also called an ultracapacitor or a double-layer capacitor.

A pair of asymmetric electrodes included in the present invention may be a supercapacitor having a fairly high capacitance as performing a function of a power storage unit for storing electrical energy.

According to an embodiment of the present invention, the pair of asymmetric electrodes may include a carbon material.

The pair of asymmetric electrodes, which include a carbon material, may exhibit excellent functions as an electrode and a current collector by using the high electrical conductivity and capacitance of carbon.

According to an embodiment of the present invention, the carbon material is carbon nanofibers, and may be in the form of a fiber bundle aligned in a line.

3 is a conceptual diagram illustrating a manufacturing process of a hybrid energy generation and storage device according to an aspect of the present invention.

Referring to FIG. 3 , the pair of asymmetric electrodes of the present invention may be formed in the form of a carbon fiber bundle by aligning carbon fibers divided into strands in a line.

According to an embodiment of the present invention, the pair of asymmetric electrodes may include carbon nanofibers twisted coaxially.

Referring to FIG. 3 , the pair of asymmetric electrodes of the present invention may be made by coaxially twisting two electrodes.

Referring to FIG. 3 , the pair of asymmetric electrodes may be a supercapacitor made by coaxially twisting two electrodes.

According to one embodiment of the present invention, the carbon nanofibers may be twisted 4 to 6 times per inch.

The carbon nanofibers, preferably, may be twisted 5 times per inch, but this does not mean that elements twisted less or more than this are not included in the scope of the present specification.

According to one embodiment of the present invention, the size ratio of the pair of asymmetric electrodes may be 1:1.1 to 1:3.

The size ratio may mean the diameter of the electrode when the electrode is circular, may mean the length of a diagonal of the electrode when the electrode is rectangular, and means the cross-sectional area of the electrode when the electrode is in the form of a fiber may be doing

By forming the electrode of the present invention asymmetrically, the potential difference between both electrodes may be further maximized, which may increase the charging capacity of the energy generation and storage device, thereby improving charging/discharging efficiency and convenience of use as a portable device.

According to an embodiment of the present invention, the electrolyte layer, H ₃ PO ₄ -PVA (polyvinyl alcohol), H ₂ SO ₃ (sulfuric acid) -PVA, KOH-PVA, NaOH-PVA and NaCl-PVA group consisting of It may be to include one or more selected from.

The electrolyte layer may be, for example, H ₃ PO ₄ -PVA.

According to one embodiment of the present invention, the friction layer for power generation is, P (VDF-TrFE-CFE) (Polyvinylidene fluoride-trifluoroethylene-chlorofluoroethylene), P (VDF-TrFE-CTFE) (Polyvinylidene fluoride-trifluoroethylene-chlorotrifluoroethylene) or It may include both.

According to an embodiment of the present invention, negative charges may be formed on the outer surface of the friction layer for power generation through mechanical friction applied to the friction layer for power generation.

4 is a conceptual diagram illustrating a process of storing electrical energy generated through mechanical friction in a hybrid energy storage and power generation device according to the present invention.

Referring to FIG. 4 , negative charges due to mechanical friction may be formed in the friction layer for power generation formed at the outer portion of the energy storage and power generation device according to the present invention (ii of FIG. 4 ).

According to an embodiment of the present invention, a positive charge is formed at a boundary between the friction layer for power generation and the electrolyte layer, and a positive charge, a negative charge, or both may be formed inside the electrolyte layer.

Referring to FIG. 4 , positive charges are formed on the friction layer for power generation based on the boundary between the friction layer and the electrolyte layer for power generation of the energy storage and power generation device according to the present invention, and negative charges are formed on the electrolyte layer side (in FIG. 4 ) iii) may be.

This means that the charge formed on the outer surface of the friction layer for power generation by mechanical friction is a negative charge, and in response to this, a positive charge is formed in the friction layer for power generation, and in response, based on the interface between the friction layer for power generation and the electrolyte layer As a result, negative charges may be formed in the electrolyte layer close to the interface.

In addition, referring to FIG. 4 , due to negative charges formed in the electrolyte layer near the interface between the power generation layer for friction and the electrolyte layer, positive charges may be formed in the electrolyte layer near the interface between the electrode and the electrolyte layer.

According to an embodiment of the present invention, the pair of asymmetric electrodes may be an anode and a cathode, respectively, and charge separation may be induced in the electrolyte layer by a potential difference induced to the anode and the cathode.

The pair of asymmetric electrodes may each have different electrical potential energies, and a relatively large electrode among the pair of asymmetric electrodes may have a larger absolute value of potential energy compared to a relatively small electrode.

Referring to FIG. 4 , a pair of asymmetric electrodes may have different electrical potential energies formed by asymmetrically formed features (iv of FIG. 4 ), which induces charge separation in the electrolyte layer ( FIG. 4 ). It may be one of ⅴ to ⅵ).

Based on the absolute value of the potential energy, an electrode having a large value may function as a cathode, and an electrode having a small value may function as an anode.

Based on the absolute value of the potential energy, an electrode having a larger value may serve as a cathode, and an electrode with a smaller value may act as an anode.

A potential difference is generated due to a difference in potential energy between the positive electrode and the negative electrode, and when the potential difference is greater than the ionization energy of the electrolyte, the electrolyte material may be ionized in the electrolyte layer.

For example, when the electrolyte layer _{includes H 3} PO ₄ -PVA, it may be ionized according to Chemical Formula 1 below to induce charge separation.

[Formula 1]

The induced charge separation may be a power storage step (non-faradaic) generated by the electric double layer.

According to an embodiment of the present invention, the pair of asymmetric electrodes may have a potential difference, and electric energy may be charged and stored by the potential difference.

Referring to FIG. 4 , the pair of asymmetric electrodes may have a potential difference, and thus electric energy may be charged (vii of FIG. 4 ).

The electrolyte may be partially ionized by the potential difference, which may be formed on an asymmetric electrode.

Even after the electrical energy generating factor such as mechanical friction disappears, some ionized electrolytes may continue to be formed on the asymmetric electrode.

The charged and stored electrical energy may supply power to an electronic device that can be connected to the energy generation and storage device according to the present invention.

The energy generation and storage device according to the present invention may have a storage capacity of 95% or more of the storage capacity retention of the device to which no deformation is applied in a bent shape or a knotted shape.

Further, the device according to the present invention may have a storage capacity after washing of the device of 95% or more of a storage capacity before washing.

According to another aspect of the present invention, there is provided a method for manufacturing a spontaneous self-charging hybrid energy generation and storage device, comprising: preparing a pair of asymmetric electrodes; forming an electrolyte layer on the surface of the pair of asymmetric electrodes, respectively; coaxially twisting the one-phase asymmetric electrode to form a supercapacitor; and forming a friction layer for power generation on the surface of the supercapacitor.

Referring to FIG. 3 , in the spontaneous self-charging hybrid energy generation and storage device according to an aspect of the present invention, a pair of asymmetric electrodes is prepared, an electrolyte is applied to the surface of the electrode, respectively, to form an electrolyte layer, and a pair of It may be to form a supercapacitor by coaxially twisting the asymmetric electrode of

Referring to FIG. 3 , after re-coating the electrolyte on the surface of the supercapacitor, a friction layer for power generation may be formed.

According to an embodiment of the present invention, the step of forming the electrolyte layer, the step of forming the friction layer for power generation, or both of these steps may be using brush printing.

A fabric according to another aspect of the present invention is manufactured using the hybrid energy generation and storage device of the present invention.

The fabric according to the present invention may have a storage capacity of 95% or more of the capacity retention of the fabric without applied deformation in the bent or knotted form.

In addition, the fabric according to the present invention, the storage capacity after washing of the fabric may be 95% or more of the storage capacity before washing.

Hereinafter, the present invention will be described in more detail by way of Examples and Comparative Examples.

However, the following examples are only for illustrating the present invention, and the content of the present invention is not limited to the following examples.

Example 1

Carbon nanofibers having a diameter of about 7 μm were prepared.

After dissolving polyvinyl alcohol (PVA; Polyvinyl alcohol) in deionized water, it was heated to 140 °C. Then, phosphoric acid (H ₃ PO ₄ ) was added to form a H ₃ PO ₄ /PVA mixture, followed by stirring for several hours.

The prepared carbon nanofibers _{were coated with a H 3} PO ₄ /PVA mixture on the surface using brush printing, and dried at room temperature to form carbon fibers coated with an electrolyte on the surface.

Two carbon fibers having electrolytes formed on the surface were twisted five times per inch to form coaxially twisted carbon fibers, and again H ₃ PO ₄ /PVA mixture was applied to the surface using brush printing and dried to about 1 in diameter. A supercapacitor of mm to 2 mm was formed.

P(VDF-TrFE-CTFE) (manufactured by PiezoTech Arkema) powder was dissolved in 2-butanone (manufactured by Sigma Aldrich) at a concentration of about 10% by mass, and then the P(VDF-TrFE- CTFE) solution was applied using brush printing onto completely dried supercapacitor fibers. Thereafter, solvent vapor annealing (SVA) was performed at room temperature for 60 minutes, and then dried under ambient pressure at room temperature for one day to manufacture a hybrid energy generation and storage device.

Comparative Example 1

A device that did not go through the step of applying P (VDF-TrFE-CTFE) in Example 1 was prepared.

Experimental Example 1: Cyclic voltammetry measurement

The electrical characteristics of the devices of Example 1 and Comparative Example 1 were measured by cyclic voltammetry.

The scan rate was ^{set to 10 mV s -1} , and a voltage range between 0.0 V and 1.0 V was measured, and the results are shown in FIG. 5A .

5A is a cyclic voltammetry measurement graph for the devices of Example 1 and Comparative Example 1. FIG.

Referring to FIG. 5A , it was confirmed that the devices of Example 1 and Comparative Example 1 drew a rectangular curve. That is, the pair of electrodes of the present invention and the electrolyte layer formed to cover them showed behavior as an ideal capacitor.

Accordingly, with respect to the device of Example 1, the scan rate ^{was changed to 30 mV s -1} , 40 mV s ^-1 , 50 mV s ^-1 , 100 mV s ^-1 , and the voltage range between 0.0 V and 1.0 V was changed using the cyclic voltammetry method. was measured using

FIG. 5B is a graph showing the cyclic voltammetry measurement of the device of Example 1 while changing the scan rate.

Referring to FIG. 5B , it was confirmed that a rectangular curve was drawn irrespective of the refresh rate, and the behavior of the ideal capacitor was observed.

Experimental Example 2: Galvanostatic charge/discharge curve

For the devices of Example 1 and Comparative Example 1, galvanostatic charge/discharge behavior was measured.

The galvanostatic charge/discharge behavior shown by measuring at a current density of 0.05 mA cm ^{-2 is shown in FIG. 6 .}

6 is a graph showing galvanostatic charge/discharge curves for the devices of Example 1 and Comparative Example 1.

Referring to FIG. 6 , it can be seen that excellent coulombic efficiency is exhibited during charging and discharging.

Moulong efficiency refers to the ratio of the capacity that has been charged compared to the capacity that has been previously charged.

As a result of calculation based on this, it was found that the specific power storage amount of the device of Example 1 was 155 μF cm ⁻¹ , and the specific power storage amount of the device of Comparative Example 1 was 157 μF cm ⁻¹ .

Experimental Example 3: Measurement of power and voltage by mechanical friction

The energy harvesting ability according to the frequency of mechanical friction applied to the energy generation and storage device of Example 1 was measured.

The frequency of mechanical friction was measured from 1 Hz to 30 Hz, which is shown in FIG. 7 on the x-axis on a logarithmic scale.

7 is a graph showing peak-to-peak (pp; peak-to-peak) power and voltage according to the mechanical friction frequency of the energy generation and storage device of Example 1.

Referring to FIG. 7 , it was confirmed that the faster the friction, the greater the power and voltage were generated and stored.

Experimental Example 4: Measurement of power and voltage of devices according to types of mechanical friction

The energy harvesting ability according to the type of mechanical friction applied to the energy generation and storage device of Example 1 was measured.

Mechanical friction was applied using a method such as 1) hitting with a finger, 2) rubbing with a fabric, or 3) hitting with a fabric, and the measured peak-to-peak power and voltage are shown in FIG. 8 .

8 is a graph showing peak-to-peak power and voltage according to types of mechanical friction of the energy generation and storage device of Example 1. FIG.

Referring to FIG. 8 , it was confirmed that the greatest power and voltage were generated when the finger was struck, and from this, it was possible to induce that a lot of power and voltage were generated from activities easily occurring in real life.

Experimental Example 5: Measurement of Galvanostatic Discharge by Mechanical Friction

Galvanostatic charging and discharging according to the mechanical friction of the energy generation and storage device of Example 1 were measured. Three energy generation and storage devices of Example 1 were prepared with a length of 10 cm, connected in parallel, and struck or rubbed with a finger for 300 seconds. Thereafter, potential energy discharged from the energy generation and storage device was measured.

9 is a graph showing the measurement of potential energy in the device after mechanical friction is applied to the energy generation and storage device of Example 1. Referring to FIG.

Referring to FIG. 9 , it was confirmed that more than about 0.2 V was spontaneously generated and stored just by applying mechanical friction to the device of Example 1 to generate triboelectric electricity.

Experimental Example 6: Measurement of the capacitance of the device after washing

After washing and applying mechanical friction to the energy generation and storage device of Example 1, an external capacitor was connected to measure the potential energy charged in the capacitor.

Washing was performed in a commercial washing machine at a speed of 800 rpm at a water temperature of about 30° C. for 2 hours after adding commercial detergent, and mechanical friction was applied to the device after washing at a speed of 10 Hz for 300 seconds.

10 is a graph showing the potential energy charged in an external capacitor connected to the energy generation and storage device of Example 1 that has been washed.

Referring to FIG. 10 , it was confirmed that the electrostatic capacity of the energy generation and storage device of the present invention was almost the same even after washing was performed.

That is, it was confirmed that the energy generation and storage device of the present invention has not only mechanical stability but also chemical durability.

As described above, although the embodiments have been described with reference to the limited drawings, those skilled in the art may apply various technical modifications and variations based on the above. For example, the described techniques are performed in a different order than the described method, and/or the described components of the system, structure, apparatus, circuit, etc. are combined or combined in a different form than the described method, or other components Or substituted or substituted by equivalents may achieve an appropriate result.

Therefore, other implementations, other embodiments, and equivalents to the claims are also within the scope of the following claims.

100: a pair of asymmetric electrodes
200: electrolyte layer
300: friction layer for power generation

Claims (16)

a pair of asymmetric electrodes;
an electrolyte layer formed to cover the pair of asymmetric electrodes; and
a friction layer for power generation formed to cover the electrolyte layer;
including,
The size ratio of the pair of asymmetric electrodes is 1: 1.1 to 1: 3,
The friction layer for power generation, P (VDF-TrFE-CFE) (Polyvinylidene fluoride-trifluoroethylene-chlorofluoroethylene), P (VDF-TrFE-CTFE) (Polyvinylidene fluoride-trifluoroethylene-chlorotrifluoroethylene) or both,
A spontaneous self-rechargeable hybrid energy generation and storage device.
According to claim 1,
The pair of asymmetric electrodes will be a supercapacitor,
A spontaneous self-rechargeable hybrid energy generation and storage device.
According to claim 1,
The pair of asymmetric electrodes, comprising a carbon material,
A spontaneous self-rechargeable hybrid energy generation and storage device.
4. The method of claim 3,
The carbon material is carbon nanofibers, which are in the form of fiber bundles arranged in a line,
A spontaneous self-rechargeable hybrid energy generation and storage device.
According to claim 1,
The pair of asymmetric electrodes will include carbon nanofibers twisted coaxially,
A spontaneous self-rechargeable hybrid energy generation and storage device.
6. The method of claim 5,
The carbon nanofibers are twisted 4 to 6 times per inch,
A spontaneous self-rechargeable hybrid energy generation and storage device.
delete According to claim 1,
The electrolyte layer is H ₃ PO ₄ -PVA (polyvinyl alcohol), H ₂ SO ₃ (sulfuric acid) -PVA, KOH-PVA, NaOH-PVA and NaCl-PVA to include at least one selected from the group consisting of sign,
A spontaneous self-rechargeable hybrid energy generation and storage device.
delete According to claim 1,
A negative charge is formed on the outer surface of the friction layer for power generation through mechanical friction applied to the friction layer for power generation,
A spontaneous self-rechargeable hybrid energy generation and storage device.
According to claim 1,
A positive charge is formed at the boundary between the friction layer for power generation and the electrolyte layer, and a positive charge, a negative charge, or both are formed in the electrolyte layer,
A spontaneous self-rechargeable hybrid energy generation and storage device.
According to claim 1,
The pair of asymmetric electrodes are, respectively, an anode and a cathode,
Charge separation is induced in the electrolyte layer by the potential difference induced in the positive electrode and the negative electrode,
A spontaneous self-rechargeable hybrid energy generation and storage device.
According to claim 1,
The pair of asymmetric electrodes has a potential difference,
Electric energy is charged and stored by the potential difference,
A spontaneous self-rechargeable hybrid energy generation and storage device.
preparing a pair of asymmetric electrodes;
forming an electrolyte layer on the surface of the pair of asymmetric electrodes, respectively;
coaxially twisting the one-phase asymmetric electrode to form a supercapacitor; and
forming a friction layer for power generation on the surface of the supercapacitor;
including,
The size ratio of the pair of asymmetric electrodes is 1: 1.1 to 1: 3,
The friction layer for power generation, P (VDF-TrFE-CFE) (Polyvinylidene fluoride-trifluoroethylene-chlorofluoroethylene), P (VDF-TrFE-CTFE) (Polyvinylidene fluoride-trifluoroethylene-chlorotrifluoroethylene) or both,
A method of manufacturing a spontaneous self-rechargeable hybrid energy generation and storage device.
15. The method of claim 14,
forming the electrolyte layer;
Forming the friction layer for power generation or both of these steps,
using brush printing,
A method of manufacturing a spontaneous self-rechargeable hybrid energy generation and storage device.
Manufactured using the hybrid energy generation and storage device of claim 1,
textile.

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