KR101907302B1 - Thread for storing electrical energy and method thereof - Google Patents

Thread for storing electrical energy and method thereof Download PDF

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Publication number
KR101907302B1
KR101907302B1 KR1020170034793A KR20170034793A KR101907302B1 KR 101907302 B1 KR101907302 B1 KR 101907302B1 KR 1020170034793 A KR1020170034793 A KR 1020170034793A KR 20170034793 A KR20170034793 A KR 20170034793A KR 101907302 B1 KR101907302 B1 KR 101907302B1
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South Korea
Prior art keywords
energy storage
layer
conductive layer
bonding layer
chamber
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KR1020170034793A
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Korean (ko)
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KR20180106449A (en
Inventor
조진한
신동엽
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고려대학교 산학협력단
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Priority to KR1020170034793A priority Critical patent/KR101907302B1/en
Priority to PCT/KR2018/003156 priority patent/WO2018174487A1/en
Publication of KR20180106449A publication Critical patent/KR20180106449A/en
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    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/44—Yarns or threads characterised by the purpose for which they are designed
    • D02G3/441—Yarns or threads with antistatic, conductive or radiation-shielding properties
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/44—Yarns or threads characterised by the purpose for which they are designed

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

The present invention relates to an energy storage chamber and a method of manufacturing the same. The energy storage chamber according to the present invention comprises a thread (10) made of flexible and at least one fiber, a transition metal oxide nano An energy storage layer 20 made of particles and arranged so as to surround the chamber 10 and metallic nano particles and is arranged between the chamber 10 and the energy storage layer 20 so as to surround the chamber 10 A first bonding layer 40 which is made of a first monomolecular material and which is disposed between the chamber 10 and the conductive layer 30 and which bonds the chamber 10 with the conductive layer 30; ), And a second bonding layer 50 (made of a second monomolecular material, which is disposed between the conductive layer 30 and the energy storage layer 20 to couple the conductive layer 30 and the energy storage layer 20) ).

Description

TECHNICAL FIELD [0001] The present invention relates to an energy storage chamber,

The present invention relates to a wearable energy storage chamber and a manufacturing method thereof, and more particularly, to a high capacity energy storage chamber that can be used for driving a wearable element by coating a functional nanoparticle with a single molecule on a seal surface.

As interest in wearable electronic devices in various fields such as functional clothes, medical bands, and portable electronic devices has been increased, there is a growing demand for high-capacity energy storage devices capable of driving wearable electronic devices lightly and stably have. In recent years, electrodes suitable for wearable energy storage devices have been relatively lighter and easier to change in shape, such as fibers or yarns, away from conventional fabric or thin film 2D and 3D forms. It is being developed as a 1D form.

Most typically, there is a 1D-type electrode based on the carbon material disclosed in Non-Patent Documents 1 and 2 of the following prior art documents. These electrodes can be coated with carbon nanotubes or graphene in cotton yarns, or based on pure carbon nanotube-yarns (CNT-Yan) to ensure high output and mechanical stability. However, such a carbon-based 1D electrode has a lower conductivity than a metal material, and there is a problem that energy density is not sufficient due to EDLC-based energy charging / discharging.

In addition, there is a metal wire-based energy storage electrode that can be manufactured as a high output energy storage device through high conductivity, but it has a disadvantage that it is difficult to secure a low energy density, light weight and mechanical flexibility when pure metal wire is used.

Accordingly, there is an urgent need for a solution to the problem of energy storage devices.

Non-Patent Document 1: K. Jost et al., Natural Fiber Welded Electrode Yarns for Knittable Textile Supercapacitor, Adv. Energy Mater. 2015, 5, 1401286 Non-Patent Document 2: J. A. Lee et al., Ultrafast Charge and Discharge Biscrolled Yarn Supercapacitors for Textiles and Microdevices, Nat. Commun. 2013, 4, 1970

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems of the prior art, and one aspect of the present invention is to provide a method of fabricating a conductive insulator comprising the steps of: guiding a conductive layer with a monomolecular substance and metal nanoparticles in a thread of a flexible insulating material; The present invention is to provide an energy storage chamber which is flexible and applicable to a wearable element by forming an energy storage layer using transition metal oxide nanoparticles as a material and has excellent energy capacity and output characteristics with high conductivity.

Another aspect of the present invention is to provide an energy storage chamber in which a plurality of high-capacity transition metals are integrated by improving the electron mobility by disposing a conductive layer between the energy storage layers close to each other.

The energy storage room according to the present invention is flexible and comprises a thread made of at least one fiber; An energy storage layer made of transition metal oxide nanoparticles storing energy and disposed so as to surround the chamber; A conductive layer made of metal nanoparticles and disposed between the chamber and the energy storage layer so as to surround the chamber; A first bonding layer made of a first monomolecular material and disposed between the chamber and the conductive layer to couple the chamber and the conductive layer; And a second bonding layer composed of a second monomolecular material and disposed between the conductive layer and the energy storage layer and coupling the conductive layer and the energy storage layer.

Further, in the energy storage chamber according to the present invention, the thread is made of at least one selected from the group consisting of polyester, cellulose, and silk.

Further, in the energy storage chamber according to the present invention, the first monomolecular substance and the second monomolecular substance are monomolecular substances having an amine group.

Further, in the energy storage chamber according to the present invention, the monomolecular material is diethylenetriamine (DETA).

In the energy storage chamber according to the present invention, the metal nanoparticles may be at least one selected from the group consisting of gold (Au), platinum (Pt), silver (Ag), copper (Cu) It is made up of more than one.

Further, in the energy storage chamber according to the present invention, the conductive layer is laminated in multiple, with the first coupling layer interposed between the chamber and the second coupling layer.

Further, in the energy storage chamber according to the present invention, the transition metal oxide nanoparticles are composed of at least one selected from the group consisting of Fe 3 O 4 , and MnO x (x = 1 or 2).

Further, in the energy storage chamber according to the present invention, the energy storage layers are stacked in multiple, with the second bonding layer interposed therebetween.

In the energy storage chamber according to the present invention, each of the conductive layer and the energy storage layer is repeatedly laminated in order, with the second bonding layer interposed therebetween, around the chamber.

Meanwhile, a method of manufacturing an energy storing chamber according to the present invention includes the steps of (A) forming a first bonding layer on an outer surface of the chamber by supporting a thread on an organic solvent in which a first monomolecular substance is dispersed, ; (B) forming a conductive layer on the outer surface of the first bonding layer by supporting the first bonding layer on the non-polar solvent in which the metal nanoparticles are dispersed; (C) forming a second bonding layer by supporting the chamber on which the conductive layer is formed, in an organic solvent in which the second terminal molecular material is dispersed; And (D) depositing an energy storage layer on the non-polar solvent in which transition metal oxide nanoparticles storing energy are dispersed, by supporting the yarn having the second binding layer formed thereon.

Further, in the method of manufacturing an energy storing chamber according to the present invention, the step (A) and the step (B) are repeatedly performed in a plurality of times sequentially before the step (C) do.

Further, in the method for manufacturing an energy storage chamber according to the present invention, the step (C) and the step (D) are repeated in sequence.

Further, in the method of manufacturing an energy storage chamber according to the present invention, the step (A) to the step (D) may be repeatedly performed in succession over a plurality of times.

In the method for producing an energy storage chamber according to the present invention, the organic solvent is ethanol, and the apolar solvent is at least one selected from the group consisting of toluene, hexane, and chloroform

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings.

Prior to that, terms and words used in the present specification and claims should not be construed in a conventional and dictionary sense, and the inventor may properly define the concept of the term in order to best explain its invention It should be construed as meaning and concept consistent with the technical idea of the present invention.

According to the present invention, a conductive layer is formed of metal nanoparticles in a flexible thread and an energy storage layer is formed of the transition metal oxide nanoparticles on the conductive layer, so that the mechanical stability is excellent and the conventional 1D material A relatively high conductivity can be realized as compared with a wearable element, so that it can be more effectively applied to a wearable element or the like.

Further, since the transition metal oxide nanoparticles having an energy storage capacity are coated on the basis of the layered self-assembly method through the solution process, the transition metal oxide nanoparticles are uniformly stacked on each fiber constituting the yarn with high density uniformly, Thereby maximizing the energy storage capacity.

Further, by inserting the conductive layer between the adjacent energy storage layers, it is possible to improve the electron mobility of the energy storage chamber, realize an increase in energy storage capacity and high output, It is also possible to easily apply the energy storage yarns to various wearable devices by weaving one yarn into one yarn.

FIG. 1 is a perspective view of an energy storage chamber according to a first embodiment of the present invention cut transversely. FIG.
2 is a cross-sectional view of an energy storage chamber according to a second embodiment of the present invention.
3 is a cross-sectional view of an energy storage chamber according to a third embodiment of the present invention.
4 is a cross-sectional view of an energy storage chamber according to a fourth embodiment of the present invention.
5 is a process diagram showing a method of manufacturing an energy storage chamber according to an embodiment of the present invention.
FIG. 6 is a scanning electron microscope (SEM) image according to the number of unilamellar / gold nanoparticle multilayer thin film bilayer coatings coated on the seal surface.
7 is a graph showing conductivity according to the number of unilamellar material / gold nanoparticle multilayer thin film layer coated on the surface of a yarn.
Fig. 8 is a photograph of conductivity of a chamber coated with a monolayer / gold nanoparticle multilayer thin film bilayer.
9 is an elemental analysis (EDX) image of an energy storage chamber according to the present invention.
10 is a graph showing an energy storage capacity of the energy storage chamber according to the present invention.
11 is a graph showing the electrochemical characteristics of the energy storage chamber according to the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The objectives, specific advantages and novel features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. It should be noted that, in the present specification, the reference numerals are added to the constituent elements of the drawings, and the same constituent elements are assigned the same number as much as possible even if they are displayed on different drawings. Also, the terms "first "," second ", and the like are used to distinguish one element from another element, and the element is not limited thereto. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description of the present invention, detailed description of related arts which may unnecessarily obscure the gist of the present invention will be omitted.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of an energy storage chamber according to a first embodiment of the present invention cut transversely. FIG.

As shown in FIG. 1, the energy storage chamber according to the first embodiment of the present invention is flexible and comprises a thread 10 made of at least one fiber, a transition metal oxide nanoparticle An energy storage layer 20 disposed so as to surround the chamber 10 and a metal nanoparticle disposed between the chamber 10 and the energy storage layer 20 to surround the chamber 10, A first bonding layer 40 made of a first monomolecular material and disposed between the seal 10 and the conductive layer 30 to bond the seal 10 and the conductive layer 30, And a second bonding layer 50 made of a second monomolecular material and disposed between the conductive layer 30 and the energy storage layer 20 to couple the conductive layer 30 and the energy storage layer 20 to each other, .

With the increasing interest in wearable electronic devices, there is a growing demand for high capacity energy storage devices capable of driving wearable electronic devices in a flexible, lightweight and stable manner. In recent years, a 1D type electrode, which is lighter in weight and easier to change its shape, that is, a 1D electrode in the form of a fiber or a yarn, Has been developed and applied to energy storage devices. Such a 1D electrode is based on a carbon material or a metal wire. In the case of a 1D electrode based on a carbon material, high output and mechanical stability can be secured, but the conductivity and energy density are relatively low as compared with a metal material. On the other hand, an electrode based on a metal wire has an advantage of being able to realize a high-output energy storage device through high conductivity, but still has a problem of low energy density, light weight and mechanical flexibility. Accordingly, in order to solve the problems of the electrode material of the conventional energy storage device, the energy storage chamber according to the present invention has been found.

Specifically, the energy storage chamber according to the present invention includes a chamber 10, an energy storage layer 20, a conductive layer 30, a first coupling layer 40, and a second coupling layer 50, A multilayer coating structure in which a first bonding layer 40, a conductive layer 30, a second bonding layer 50, and an energy storage layer 20 are sequentially disposed around the chamber 10.

Here, the yarn 10 is a member formed by twisting fibers. Although a typical yarn 10 is produced by twisting a plurality of fibers in a lengthwise direction, the yarn 10 of the present invention may be made of two or more fibers as well as a single fiber. Such a seal 10 is of 1D shape, and is light and flexible.

On the other hand, the yarn 10 is made of an insulating material, for example, at least one selected from the group consisting of polyester, cellulose, and silk. Such a yarn 10 has excellent mechanical strength. Therefore, it is possible to realize a 1D type energy storage device material which is light, flexible, and excellent in mechanical stability. However, the material of the yarn 10 is not necessarily limited to such a material as long as it is insulative and flexible.

The energy storage layer 20 is the outermost layer disposed around the chamber 10 and is formed in the form of a coating surrounding the chamber 10. The energy storage layer 20 is made of transition metal oxide nanoparticles, which are energy storage materials. The transition metal oxide nanoparticles are materials having a high theoretical capacity value suitable for energy storage devices, for example, Fe 3 O 4 , and MnO x (x = 1 or 2), that is, each of the above oxides, or a mixture thereof. However, the material of the transition metal oxide nanoparticle is not necessarily limited to the above material, and may include any known transition metal oxide nanoparticles as long as it has energy storage property.

The conductive layer 30 is disposed between the chamber 10 and the energy storage layer 20 and is a layer formed in the form of a film surrounding the chamber 10. In the case of the energy storage layer 20 made of the above-mentioned transition metal oxide nanoparticles, the conductivity is very low. Further, since the chamber 10 is made of an insulating material, the conductive layer 30 is disposed in order to impart conductivity to the energy storage chamber according to the present invention. This conductive layer 30 is made of metal nanoparticles wherein the metal is selected from the group consisting of gold (Au), platinum (Pt), silver (Ag), copper (Cu) And may be at least one or more selected. When such metal nanoparticles are coated on the insulating yarn 10, relatively high conductivity can be achieved compared with the conventional carbon material based 1D material. However, the metal nanoparticles are not necessarily limited to the metal as long as they can impart conductivity to the insulating yarn 10 as fine particles of conductive metal.

The first bonding layer 40 is disposed between the seal 10 and the conductive layer 30 in the form of a coating surrounding the outer surface of the seal 10 to bond the seal 10 and the conductive layer 30 together. The first binding layer 40 is made of a first monomolecular material that is well adsorbed on the yarn 10 and has a very strong affinity with metal nanoparticles forming the conductive layer 30, And the metal nanoparticles are coated on the yarn 10 through a layer-by-layer assembly (LbL assembly). As the first monomolecular substance, there is a monomolecular substance having an amine group. Specifically, diethylenetriamine (DETA) or the like can be used. The tris (2-aminoethyl) amine (tris (2-aminoethyl) amine) having an amine group may be used as long as the metal nanoparticles can be fixed on the surface of the yarn 10, amine, TREN), a compound having a carboxyl group (10), or the like.

The second bonding layer 50 is formed so as to surround the outer surface of the conductive layer 30 between the conductive layer 30 and the energy storage layer 20. At this time, the second bonding layer 50 is formed of a second monomolecular material coated on the metal nanoparticles forming the conductive layer 30 and adsorbing the transition metal oxide nanoparticles constituting the energy storage layer 20. Here, the second monomolecular substance may be DETA as a monomolecular substance having an amine group, the same as the first monomolecular substance, or a compound having a TREND or carboxyl (10) group. At this time, the second monomolecular substance may be the same compound as the first monomolecular substance, but other compounds may be used.

Here, the transition metal oxide nanoparticles and the monomolecular material are uniformly coated on the conductive layer 30 through a layered self-assembly method through a solution process. According to this method, even when the plurality of fibers are twisted to form the yarn 10, the transition metal oxide nanoparticles are effectively coated on the surface of the fibers disposed inside the yarn 10. Therefore, there is an advantage that the transition metal oxide nanoparticles can be coated not only on the outer surface but also on the inner surface of the chamber 10 with a high density.

Generally speaking, the energy storage chamber according to the present invention includes a conductive layer 30 formed of metal nanoparticles and an energy storage layer 20 formed of transition metal oxide nanoparticles sequentially outward from the chamber 10 To realize an energy storage element material that is lightweight, excellent in mechanical stability, and high in conductivity.

Further, since the transition metal oxide nanoparticles having an energy storage capacity are coated on the basis of the layered self-assembly method through the solution process, the transition metal oxide nanoparticles are uniformly stacked on the respective fibers constituting the yarn 10 at a high density, It is possible to maximize the energy storage capacity due to miniaturization.

2 is a cross-sectional view of an energy storage chamber according to a second embodiment of the present invention.

As shown in FIG. 2, the energy storage room according to the present invention may have a structure in which a plurality of conductive layers 30 are stacked one by one with the first bonding layer 40 interposed therebetween.

Specifically, in this embodiment, the first bonding layer 40 and the conductive layer 30 are repeatedly arranged in sequence between the seal 10 and the second bonding layer 50. [ That is, the first bonding layer 40a, the conductive layer 30a, the first bonding layer 40b, and the conductive layer 30b are sequentially arranged alternately in the order of the seal 10 in this order. At this time, the first bonding layer 40 bonds between the seal 10 and the conductive layer 30a and between the adjacent conductive layers 30a and 30b, and the multi-layered conductive layers 30a and 30b Thereby further improving the conductivity of the energy storage chamber according to the invention.

3 is a cross-sectional view of an energy storage chamber according to a third embodiment of the present invention.

As shown in FIG. 3, a plurality of energy storage layers 20 may be stacked one by one with a second bonding layer 50 therebetween, according to the present invention. At this time, a second bonding layer 50b is disposed between adjacent energy storage layers 20a and 20b, respectively, and the energy storage layers 20a and 20b are coupled to each other. Accordingly, in the energy storage chamber according to the present embodiment, the plurality of second coupling layers 50a and 50b and the energy storage layers 20a and 20b are sequentially alternately arranged.

Under such a structure, the energy storage capacity of the energy storage chamber according to the present invention is increased. However, since the energy storage layer 20 is composed of transition metal oxide nanoparticles and the conductivity is low, it is difficult to increase the thickness of the energy storage layer 20 indefinitely or to limit the energy storage layer 20 to a limit . Accordingly, the problem can be solved by disposing the conductive layer 30 between the adjacent energy storage layers 20, which will be described in detail below.

4 is a cross-sectional view of an energy storage chamber according to a fourth embodiment of the present invention.

4, a plurality of conductive layers 30 and energy storage layers 20 are formed in the energy storage room according to the present invention such that a plurality of conductive layers 30 and energy storage layers 20 are formed between the first bonding layer 50 and the second bonding layer 50, And can be made of a structure that is repeatedly stacked one by one sequentially.

Specifically, from the center to the outer side, the seal 10, the first bonding layer 40a, the first conductive layer 30a, the second bonding layer 50a, the first energy storage layer 20a, The first conductive layer 50b, the second conductive layer 30b, the second coupling layer 50c, and the second energy storage layer 20b.

When the energy storage layer 20 made of the transition metal oxide nanoparticles having low conductivity is thickened or multi-layered, the movement of the electrons is not smooth at a certain level or more, and the performance of the device is rather degraded. Therefore, as the conductive layer 30 and the energy storage layer 20 are alternately repeatedly stacked by the layered self-assembly method, the electron transfer characteristics of the energy storage layer 20 are improved, The energy storage capacity of the battery is increased, and the battery has high output.

The energy storage rooms according to the first to fourth embodiments of the present invention may be used in various wearable devices by weaving one by one or by woven a plurality of the energy storage rooms.

In particular, in the case of using a plurality of cells, the energy storage layers may be formed using different kinds of transition metal oxide nanoparticles, and the energy storage chambers according to the different embodiments may be interwoven with each other.

The energy storage room described above is manufactured by the following method. For the items overlapping with those described above, the description is omitted or described only briefly.

5 is a process diagram showing a method of manufacturing an energy storage chamber according to an embodiment of the present invention.

As shown in FIG. 5, the method for manufacturing an energy storing chamber according to the present invention comprises the steps of (A) supporting a thread on an organic solvent in which a first monomolecular substance is dispersed, (S200) of forming a conductive layer on the outer surface of the first bonding layer by supporting a thread having the first bonding layer on the non-polar solvent in which metal nanoparticles are dispersed, (C) a step (S300) of supporting a yarn having a conductive layer formed on an organic solvent in which a second-stage molecular material is dispersed to form a second binding layer (S300), and (D) transferring the transition metal oxide nanoparticles And a step of supporting the yarn having the second bonding layer on the dispersed non-polar solvent to form an energy storage layer (S400).

In order to produce the energy storing chamber according to the present invention, the first unidolecular material is first adsorbed on the outer surface of the yarn to form the first binding layer (S100). The adsorption of the first monomolecular substance is carried out by preparing an organic solvent in which the first monomolecular substance is dispersed and supporting the yarn in the organic solvent, wherein the first monomolecular substance is adsorbed on the surface of the yarn, To form a bonding layer. Here, the organic solvent may be ethanol, and the first monomolecular material may be a substance having an amine group such as DETA. However, the type is not necessarily limited thereto.

When the first bonding layer is formed on the yarn, a conductive layer made of metal nanoparticles is formed on the outer surface of the first bonding layer (S200). Specifically, when metal nanoparticles are dispersed in a nonpolar solvent to prepare a dispersion, and a yarn having the first binding layer formed thereon is carried on the dispersion, metal nanoparticles are coated on the surface of the yarn through a monomolecular substance and a layered self- Thereby forming a conductive layer. The nonpolar solvent may be at least one selected from the group consisting of toluene, hexane, and chloroform. The metal nanoparticles may be at least one selected from the group consisting of gold (Au), platinum (Pt), silver (Ag) , Aluminum (Al), and the like.

Next, a dispersion liquid in which a second monomolecular substance is dispersed in an organic solvent is prepared, and a process of immersing a yarn in which a conductive layer is formed in the dispersion is performed to form a second binding layer (S300). At this time, suitable examples of the organic solvent include ethanol and the like. As the first monomolecular substance, a substance having an amine group such as DETA can be used. However, the kind is not necessarily limited thereto.

Lastly, the transition metal oxide nanoparticles are dispersed in a non-polar solvent, and a yarn in which the second binding layer is formed is carried on the non-polar solvent (S400). At this time, the transition metal oxide nanoparticles form an energy storage layer through a layered self-assembly method with a monomolecular material constituting the second bonding layer. Here, the apolar solvent may be at least one selected from the group consisting of toluene, hexane, and chloroform, and the transition metal oxide nanoparticles may be selected from the group consisting of Fe 3 O 4 and MnO x (x = 1 or 2) Or more.

Through the above-described manufacturing process, the energy storage chamber according to the first embodiment can be manufactured.

On the other hand, in order to fabricate the energy storing chamber according to the second embodiment in which the conductive layers are laminated in multiple layers, the first bonding layer forming step (S100) and the second bonding layer forming step , And the conductive layer forming step (S200) are repeated in sequence. As a result, it is possible to realize a structure in which the conductive layers are multilayered with the first bonding layer interposed therebetween.

The energy storage room according to the third embodiment in which the energy storage layers are stacked in multiple is formed by sequentially repeating the second bonding layer formation step (S300) and the energy storage layer formation step (S400) .

Meanwhile, in order to manufacture the energy storage chamber according to the fourth embodiment in which the conductive layer is disposed between adjacent energy storage layers, the first bonding layer forming step S100, the conductive layer forming step S200, The bonding layer forming step S300, and the energy storing layer forming step S400 are sequentially repeated a plurality of times.

Hereinafter, the present invention will be described with reference to more specific examples.

FIG. 6 is a scanning electron microscope (SEM) image of the unilamellar substance / gold nanoparticle multilayer thin film coated on the surface of the yarn, and FIG. 7 is a scanning electron micrograph Fig.

In Fig. 6, DETA is adsorbed on the surface of a polyester by supporting a polyester yarn in a dispersion liquid in which a single molecule substance DETA is dispersed in ethanol, and a polyester yarn is added to a solution in which gold nanoparticles (Au NP) The supporting step was repeated n times to prepare a polyester yarn having a structure in which the DETA / Au NP multi-layered thin film double layer was laminated n times, and an SEM image of the yarn was taken.

As a result, the density of gold nanoparticles coated on the polyester seal surface increased as the number of multilayer thin film bilayers increased.

In FIG. 7, the conductivity was measured while increasing the number of double layers of DETA / Au NP multilayer thin films on the polyester room surface up to 20 times. As a result, the conductivity was increased as the number of multilayer thin film layers was increased or decreased.

As a result, the density of the metal nanoparticles increases as a result of multilayered conductive layers made of metal nanoparticles, and the relative density of the metal nanoparticles relative to the carbon material 1D material It can be understood that high conductivity can be realized.

Fig. 8 is a photograph of conductivity of a chamber coated with a monolayer / gold nanoparticle multilayer thin film bilayer.

8, the DETA / Au NP multi-layer thin film double layer was coated 20 times on the surface of the polyester room, and the polyester room was wound around a 1 mm diameter glass tube and the device was driven at this time. This means that the energy storing chamber according to the present invention in which the conductive layer is disposed in multiple can maintain the conductivity even when twisted or warped, so that it can be applied to a wearable element.

9 is an elemental analysis (EDX) image of an energy storage chamber according to the present invention.

9, the DETA / Au NP multilayer thin film double layer was coated 20 times on the surface, and then DETA / Fe 3 O 4 An EDX image of a polyester yarn coated with 10 layers of a multilayer thin film bilayer was photographed. Here, the 10 times coated DETA / Fe 3 O 4 In the multilayer thin film double layer, a polyester film coated with ETA / Au NP multilayer thin film bilayer was supported on an organic solvent in which DETA was dispersed and then taken out, and the process of supporting Fe 3 O 4 nanoparticles on a dispersed nonpolar solvent was repeated 10 times .

The EDX images show that gold nanoparticles and Fe 3 O 4 The nanoparticles are uniformly coated at high density. Therefore, in the case of the energy storage room according to the present invention in which the conductive layer and the energy storage layer are formed on the basis of the layered self-assembly method through the solution process, not only the outer surface of the room but also the fibers disposed inside, The metal nanoparticles and the transition metal oxide nanoparticles are uniformly coated at a high density and the amount of stacking of the energy storage particles is maximized.

 FIG. 10 is a graph showing the energy storage capacity of the energy storage chamber according to the present invention, and FIG. 11 is a graph showing electrochemical characteristics of the energy storage chamber according to the present invention.

In Figure 10, the gold nano-coated polyester yarn, only particles (sample 1, black), on the conductive layer made of gold nanoparticles Fe 3 O 4 A polyester room (sample 2, pink) in which the energy storage layer was repeatedly coated with nanoparticles 10 times, a Fe 3 O 4 coated on the conductive layer of gold nanoparticles 5 times Two samples of energy storage layers consisting of nanoparticles were placed in a polyester chamber (sample 3, blue) interposed with a gold nanoparticle conducting layer interposed therebetween, and five times coated on a conducting layer of gold nanoparticles, Fe 3 O 4 Energy storage layer of the nanoparticles are disposed, and over the 5 times-coated gold nano-conducting layer of the particles and Fe 3 O 4 of the energy storage layer of nanoparticles laminated multilayer films each coated twice polyester yarn (Sample 4 , Red) were measured for energy storage capacity.

As a result, Sample 2 shows a larger energy storage capacity than Sample 1. When comparing Sample 2 with Sample 3, the same number of Fe 3 O 4 Even though the nanoparticles are coated, the energy storage capacity of the sample 3 in which the conductive layer is inserted between the energy storage layers becomes larger because the conductivity of the energy storage layer is improved by the inserted conductive layer.

On the other hand, Sample 4 has the best energy storage capacity compared to other samples.

Accordingly, the present invention can be proposed as a method for increasing the performance of the energy storage material having low conductivity through the lamination structure of the conductive layer and the energy storage layer.

In Fig. 11, electrochemical analysis of the electrodes was carried out in order to prove that the electron transporting property of the energy storage chamber was improved by inserting the conductive layer between the energy storage layers, the energy storage capacity was increased, and the output value was increased. Here, electrode characteristics of Sample 2 and Sample 3 were measured under a three-electrode system through a cyclic voltammetry (CV).

As a result, Sample 3 clearly demonstrates the behavior of the water capacitor to high scan rates of 5 to 5000 mV / s and exhibits an excellent rate capability of 60% over maximum performance at 1000 mV / s. This phenomenon demonstrates that the charge storage chamber has sufficient pores for electrolyte migration and that rapid charge transfer is realized by gold nanoparticles interposed between transition metal oxide nanoparticle layers with low conductivity.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the same is by way of illustration and example only and is not to be construed as limiting the present invention. It is obvious that the modification or improvement is possible.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

10: room 20: energy storage layer
30: conductive layer 40: first bonding layer
50: second bonding layer

Claims (14)

A thread that is flexible and comprises at least one or more fibers;
An energy storage layer made of transition metal oxide nanoparticles storing energy and disposed so as to surround the chamber;
A conductive layer made of metal nanoparticles and disposed between the chamber and the energy storage layer so as to surround the chamber;
A first bonding layer made of a first monomolecular material and disposed between the chamber and the conductive layer to couple the chamber and the conductive layer; And
And a second coupling layer made of a second-stage molecular material and disposed between the conductive layer and the energy storage layer and coupling the conductive layer and the energy storage layer,
The first monomolecular material is formed by a layered self-assembly method to form the first bonding layer in the form of a coating that envelops the outer surface of the yarn, and is bonded to the outer surface of the yarn in the inward direction, And is coupled to the outer surface,
Wherein the second monomolecular material is formed by forming the second bonding layer in a coating form that surrounds the outer surface of the conductive layer by layered self-assembling and is bonded to the outer surface of the metal nanoparticles in the inward direction, An energy storage yarn bonded to the outer surface of the metal oxide nanoparticles.
The method according to claim 1,
The thread
Wherein the energy storage yarn is made of at least one selected from the group consisting of polyester, cellulose, and silk.
The method of claim 2,
The first monomolecular material, and the second monomolecular material,
An energy storage chamber which is a monomolecular material having an amine group.
The method of claim 3,
The monomolecular material
Diethylenetriamine (DETA), an energy storage chamber.
The method of claim 4,
The metal nano-
An energy storage yarn comprising at least one selected from the group consisting of gold (Au), platinum (Pt), silver (Ag), copper (Cu), and aluminum (Al).
The method according to claim 1,
The conductive layer
Wherein a plurality of the first and second bonding layers are laminated in multiple layers sandwiching the first bonding layer between the yarn and the second bonding layer.
The method according to claim 1,
The transition metal oxide nanoparticles
Fe 3 O 4 , and MnO x (x = 1 or 2). < / RTI >
The method according to claim 1,
The energy storage layer
And a plurality of the energy storage yarns are stacked in multiple, with the second coupling layer interposed therebetween.
The method according to claim 1,
Each of the conductive layer and the energy storage layer
And the second bonding layer is interposed between the first bonding layer and the second bonding layer.
(A) forming a first bonding layer on an outer surface of the chamber by supporting a thread on an organic solvent in which a first-stage molecular substance is dispersed;
(B) forming a conductive layer on the outer surface of the first bonding layer by supporting the first bonding layer on the non-polar solvent in which the metal nanoparticles are dispersed;
(C) forming a second bonding layer by supporting the chamber on which the conductive layer is formed, in an organic solvent in which the second terminal molecular material is dispersed; And
(D) depositing the energy storage layer on the non-polar solvent in which the transition metal oxide nanoparticles storing energy are dispersed, the chamber having the second bonding layer formed thereon,
The first monomolecular material is formed by a layered self-assembly method to form the first bonding layer in the form of a coating that envelops the outer surface of the yarn, and is bonded to the outer surface of the yarn in the inward direction, And is coupled to the outer surface,
Wherein the second monomolecular material is formed by a layered self-assembling method to form the second bonding layer in the form of a film that surrounds the outer surface of the conductive layer, is bonded to the outer surface of the metal nanoparticles in the inward direction, Wherein the metal oxide nanoparticles are bonded to the outer surface of the metal oxide nanoparticles.
The method of claim 10,
Repeating the steps (A) and (B) sequentially in a plurality of times before the step (C);
Further comprising the steps of:
The method of claim 10,
Repeating the step (C) and the step (D) sequentially in a plurality of times;
Further comprising the steps of:
The method of claim 10,
Repeating the steps (A) to (D) sequentially in a plurality of times;
Further comprising the steps of:
The method of claim 10,
Wherein the organic solvent is ethanol,
Wherein the apolar solvent is at least one selected from the group consisting of toluene, hexane, and chloroform.
KR1020170034793A 2017-03-20 2017-03-20 Thread for storing electrical energy and method thereof KR101907302B1 (en)

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JP2005516370A (en) * 2002-01-25 2005-06-02 コナルカ テクノロジーズ インコーポレイテッド Solar cell fiber
KR101562254B1 (en) 2014-09-19 2015-10-22 한남대학교 산학협력단 Macromolecular nanofiber having photocatalystic activity in visible light region and manufacturing method thereof

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TW569195B (en) * 2001-01-24 2004-01-01 Matsushita Electric Ind Co Ltd Micro-particle arranged body, its manufacturing method, and device using the same
KR100657949B1 (en) * 2005-02-05 2006-12-14 삼성전자주식회사 Flexible solar cells and process for preparing the same
KR101723564B1 (en) * 2016-03-18 2017-04-06 (주)오알켐 Fiber Electroless Copper Plating PROCESS

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Publication number Priority date Publication date Assignee Title
JP2005516370A (en) * 2002-01-25 2005-06-02 コナルカ テクノロジーズ インコーポレイテッド Solar cell fiber
KR101562254B1 (en) 2014-09-19 2015-10-22 한남대학교 산학협력단 Macromolecular nanofiber having photocatalystic activity in visible light region and manufacturing method thereof

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