KR101597535B1 - Preparation method of a membrane having a non-woven tissue and thus the membrane is prepared by, and the current collector for the super capacitor or battery production method using a membrane having a non-woven tissue non-woven tissue - Google Patents

Preparation method of a membrane having a non-woven tissue and thus the membrane is prepared by, and the current collector for the super capacitor or battery production method using a membrane having a non-woven tissue non-woven tissue Download PDF

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Publication number
KR101597535B1
KR101597535B1 KR1020140164902A KR20140164902A KR101597535B1 KR 101597535 B1 KR101597535 B1 KR 101597535B1 KR 1020140164902 A KR1020140164902 A KR 1020140164902A KR 20140164902 A KR20140164902 A KR 20140164902A KR 101597535 B1 KR101597535 B1 KR 101597535B1
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KR
South Korea
Prior art keywords
silver
nonwoven fabric
membrane
solution
heating
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KR1020140164902A
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Korean (ko)
Inventor
장윤석
최영만
김광영
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한국기계연구원
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/02—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/02—Inorganic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/02—Inorganic material
    • B01D71/022—Metals

Abstract

Disclosed are a method for producing a silver membrane having a non-woven structure, a silver membrane produced thereby, and a method for producing a battery current collector or a super capacitor using the silver membrane having the non-woven structure. the method for producing the silver membrane having the non-woven structure comprise the following steps: a non-woven fabric supplying step for supplying non-woven fabric from an unwinder; a non-woven fabric washing step for washing the supplied non-woven fabric with a cleaner; a silver solution coating step for spraying silver solution, in which silver particles are dispersed, onto the non-woven fabric by means of a sprayer; a silver non-woven fabric extraction step for extracting only silver non-woven fabric from the non-woven structure by removing the non-woven fabric after applying heat to the non-woven fabric so as to incinerate the same by an incinerating unit; and a silver non-woven fabric collecting step for collecting the silver non-woven fabric by winding the same by a rewinder.

Description

[0001] The present invention relates to a method of manufacturing a silver membrane having a nonwoven structure, a silver membrane produced by the silver membrane, and a silver membrane having a nonwoven structure, The present invention relates to a method for producing a non-woven tissue,

The present invention relates to a method of manufacturing a silver membrane having a nonwoven fabric, a silver membrane produced by the silver membrane, and a silver membrane having a nonwoven structure, and a method of manufacturing a collector for a super capacitor or a battery.

More particularly, the present invention relates to a method for producing a membrane having a nonwoven fabric capable of producing a membrane having a nonwoven structure by spray coating silver nanoparticles on the nonwoven fabric and removing the nonwoven fabric by incineration, and a membrane produced thereby, The present invention also relates to a method of manufacturing a current collector for a super capacitor or a battery,

Filtration of solids from liquids or gases may include biosciences, industrial processing, laboratory testing, food & beverage, electronics, and water treatment. Is being used in many fields.

Membrane filters are porous or microporous films used to perform the type of operation. Membrane filters (screens, sieves, microporous filters, microfilters, ultrafilters or nanofilters) hold solids larger than the pore size, such as particles or microorganisms, primarily by surface capture.

Particles smaller than the pore size mentioned will be retained by other mechanisms. However, the initial selection of the membrane filter is generally based on pore size and pore size distribution. The precise nature of the pore size is very important because the pore size rating is effective in controlling the utilization of the membrane filter.

In many cases, the filtration membrane is used over a long period of time, or repeatedly. In these cases it is often necessary to sanitize the membrane before it is adequately cleaned or reused to avoid contamination.

The pores of the filter can be the hotbed of particles containing microorganisms, and other hazards, including health, can be present. Therefore, relatively harsh conditions, including caustic washing agents, are used to avoid these hazards.

Due to the relatively fine and sophisticated nature of the porous structure, washing procedures, especially where harsh chemicals such as corrosive chemicals used in many cleaning and sterilizing products are used, can corrode the membrane, resulting in time Over time, the gap becomes larger. Thus, when the membrane filter is used repeatedly, it is important to maintain pore size consistent with its integrity through repeated cleaning processes. Otherwise, the reliability of the filtering process may deteriorate.

Prior Art 1: Korean Patent Publication 10-2010-0093051

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a silver membrane having a nonwoven fabric capable of producing a membrane having a nonwoven structure by spray coating silver nanoparticles on the nonwoven fabric, Method.

The present invention also provides a silver membrane of a nonwoven fabric produced by the membrane having the nonwoven fabric.

It is another object of the present invention to provide a method for manufacturing a current collector for a super capacitor or a battery using a silver membrane that sprays and coating activated carbon on the silver membrane.

The above-mentioned silver membrane can be effectively utilized as an antibacterial membrane due to the sterilization action of the silver membrane. In particular, since the silver material has higher thermal stability and chemical stability than other metals, the chemical used for the conventional cleaning and sterilization The morphological consistency due to the material can be maintained for a long time, which can increase the reliability of the product.

According to an aspect of the present invention,
A nonwoven fabric supplying step in which a nonwoven fabric is supplied from an unwinder; A nonwoven fabric cleaning step of cleaning the supplied nonwoven fabric with a cleaner; A silver solution coating step of spraying a silver solution in which silver nanoparticles are dispersed in the nonwoven fabric with a sprayer; A silver nonwoven fabric extracting step of extracting only silver nonwoven fabric of the nonwoven fabric structure by removing the nonwoven fabric by heating and incinerating the nonwoven fabric by the incinerator; And a silver nonwoven fabric recovery step of winding up and recovering the silver nonwoven fabric by a rewinder,
Further comprising heating the nonwoven fabric to a boiling point or higher of the silver solution by a heating stage supporting the nonwoven fabric so that the silver solution is uniformly adhered to the nonwoven fabric during the step of spraying the silver solution onto the nonwoven fabric A process for producing a silver membrane of nonwoven fabric is provided.

delete

The method may further include a drying step of drying the washed nonwoven fabric by a dryer between the nonwoven fabric washing step and the silver solution coating step.

delete

The incineration temperature of the nonwoven fabric may be 400 to 500 ° C.

According to another aspect of the present invention, there is provided a silver membrane produced by a silver membrane manufacturing method of nonwoven fabric.

According to another aspect of the present invention, there is provided a method of manufacturing a supercapacitor using the silver membrane described above, wherein the silver membrane is spray coated with an activated carbon solution in which activated carbon particles are dispersed in the silver membrane, And the heating temperature of the heating stage is set to a temperature higher than the boiling point of the activated carbon solution or higher than that of the silver membrane of the nonwoven fabric, A method of manufacturing a super capacitor is provided.

According to another aspect of the present invention, there is provided a method for manufacturing a current collector for a battery using the silver membrane described above, wherein the silver membrane is spray coated with an activated carbon solution in which activated carbon particles are dispersed in the silver membrane, The heating temperature of the heating stage is set at a temperature higher than the boiling point of the activated carbon solution or higher than the boiling point of the activated carbon solution, There is provided a current collector manufacturing method for a battery using a silver film.

The present invention can be used as an antibacterial filter for removing viruses or bacteria since a membrane having a nonwoven fabric can be manufactured using silver as a material having high passive stability and chemical stability and excellent bactericidal action as compared to other metals Of course, it can be utilized as a cathode electrode of a fuel cell.

In addition, when the activated carbon is coated on the silver membrane, it can be used as a porous collector of a supercapacitor or a battery.

1 is a process diagram of a silver membrane having a nonwoven fabric according to the present invention
2 is a flow chart for explaining a manufacturing process of a silver membrane having a nonwoven fabric according to the present invention
Figure 3a is a micrograph of a non-
Figure 3b is a micrograph of the silver nonwoven
4 is a view showing a basic structure of a super capacitor using a silver membrane manufacturing process of a nonwoven fabric according to the present invention
5 is a process diagram of a current collector for a super capacitor or battery using a silver membrane according to the present invention

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. It is to be understood that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

FIG. 1 is a view illustrating a process of manufacturing a silver membrane having a nonwoven fabric according to the present invention, and FIG. 2 is a flowchart illustrating a process of manufacturing a silver membrane having a nonwoven fabric according to the present invention.

1 and 2, a silver membrane having a nonwoven fabric structure according to the present invention is prepared by spray coating a silver (Ag) solution in which silver nanoparticles are dispersed on a non-woven fabric of non- Heat is applied and incinerated to obtain silver membranes of the desired nonwoven fabric.

The silver membrane having such a nonwoven fabric may be produced by a continuous process or alternatively may be produced by a single process.

The continuous process will be described with reference to FIG.

In step 1, the nonwoven fabric is supplied (S10)

In the first step, the unwinder 10 is rotated while the flat nonwoven fabric 1 is wound on the unwinder 10 in a roll form, and the unwoven fabric 1 is continuously unwound and supplied.

Herein, the nonwoven (nonwoven fabrics) 1 refers to fabrics made by bonding or tangling fibers by mechanical operation, thermal bonding, or chemical agents. A felt, a nonwoven fabric, a needle punch, a spun bond, a spun lace, an embossed film, and a wet (nonwoven) nonwoven fabric. In short, it is a randomly overlapping web, and the contact between fibers is bonded with a resin and used for wicking. As in the above definition, the nonwoven fabric (1) has a shape in which fiber yarns are entangled and innumerable pores are formed therebetween.

In step 2, the nonwoven fabric is washed (S20)

In the second step, the nonwoven fabric 1 continuously supplied from the unwinder 10 is cleaned by the cleaner 20 to remove foreign matter from the nonwoven fabric 1. [ Here, the cleaner 20 may be a method of spraying high-pressure air onto the nonwoven fabric 1 to remove foreign matter. Alternatively, a method of removing foreign matter by spraying high-pressure water may be suggested.

Step 3, the nonwoven fabric is dried (S30)

In step 3, if the nonwoven fabric 1 is washed with water in the previous step 2, water is left on the nonwoven fabric 1, and thus the nonwoven fabric 1 is removed by the dryer 30, The third step may be omitted.

Step 4, silver coating the solution (S40)

Step 4 is a step of spraying a silver (Ag) solution, in which silver nanoparticles are dispersed, to the nonwoven fabric 1 with a sprayer 40.

As shown in FIG. 3A, when the nonwoven fabric 1 is observed under a microscope, the fiber yarn is randomly entangled. When the silver solution is sprayed, the silver solution is coated on the surface of each fiber yarn.

At this time, in the process of spraying the silver solution on the nonwoven fabric 1, the nonwoven fabric 1 is heated to the boiling point or higher of the silver solution by the heating stage 50 supporting the nonwoven fabric 1 . When not heated, the silver solutions are aggregated or flowed down without sticking to the wire (w).

Step 5, silver is extracted from the nonwoven fabric (S50)

In the fifth step, the nonwoven fabric 1 is removed by heating the incineration means 60 by incinerating the nonwoven fabric 1 by heat, and only the silver surrounding the nonwoven fabric 1 remains like a shell. The silver nonwoven fabric 1 is retained as it is, so that the silver nonwoven fabric 1 having the nonwoven fabric structure can be obtained as shown in FIG. 3B. The incineration temperature of the nonwoven fabric 1 is suitably 400 to 500 ° C.

Step 6, the nonwoven fabric is recovered (S60)

In the sixth step, the silver nonwoven fabric 2 on the flat plate can be rolled up and recovered while the rewinder 70 is rotated.

The silver (Ag), which is a major component of the silver nonwoven fabric (Silver 2) produced by this process, can be used for antibacterial use due to its unique sterilizing action, and thus can be effectively applied as a filter for removing viruses or bacteria. In particular, silver has high chemical stability and can prevent deformation due to chemicals used in cleaning and sterilization.

In the above description, the continuous process for continuously manufacturing the silver nonwoven fabric has been described as an example, but the nonwoven fabric process may be performed in a different manner.

On the other hand, since silver has a higher thermal stability than other metals, it can be utilized as a cathode electrode of a fuel cell, and can be used as a porous capacitor of a super capacitor or a battery.

A typical electric double layer capacitor (EDLC) among the above-described supercapacitors is composed of a current collector 100, an activated carbon electrode 200, an electrolyte, and a separator 300 from both sides as shown in FIG.

The electrode 200 is composed of an active material having a large effective specific surface area such as activated carbon powder or activated carbon fiber, a conductive material 210 for imparting conductivity, and a binder 220 for binding between the respective materials. An aqueous electrolyte solution and a non-aqueous electrolyte solution are used. As the separating film 300, polypropylene, Teflon or the like is used, which serves to prevent a short circuit due to contact between the electrodes.

In manufacturing the current collector 100, the silver nonwoven fabric 2 may be used. That is, as shown in FIG. 5, an active carbon solution in which activated carbon particles are dispersed by a sprayer 40a can be produced by spraying the silver nonwoven fabric 2.

At this time, the silver nonwoven fabric 2 has a suction function and is coated on the heating stage 50a for generating heating heat so that the activated carbon solution penetrates deeply into the silver nonwoven fabric 2 So that the activated carbon solution can be attached to the silver nonwoven fabric 2 without flowing down.

The heating temperature in the heating stage 50a is preferably set to a boiling point or higher of the activated carbon solution.

The supercapacitor current collector 100 manufactured as described above can control the thickness of the wire W of the silver nonwoven fabric 2 or the space between the wires W by controlling the amount of the activated carbon solution to be sprayed, It is possible to form pores.

In addition, since the current collector 100 of the present invention has a nonwoven fabric structure, the three-dimensional contact (3D contact) is possible, and the specific surface area is increased, while the general current collector is in plane contact (2D contact).

It is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

1: nonwoven fabric 2: silver nonwoven fabric
10: unwinder 20: cleaner
30, 30a: dryer 40, 40a: sprayer
50: heating stage 60: incineration means
70: Rewinder 100: Entire house
200: activated carbon electrode 300:

Claims (8)

delete A nonwoven fabric supplying step in which a nonwoven fabric is supplied from an unwinder;
A nonwoven fabric cleaning step of cleaning the supplied nonwoven fabric with a cleaner;
A silver solution coating step of spraying a silver solution in which silver nanoparticles are dispersed in the nonwoven fabric with a sprayer;
A silver nonwoven fabric extracting step of extracting only silver nonwoven fabric of the nonwoven fabric structure by removing the nonwoven fabric by heating and incinerating the nonwoven fabric by the incinerator; And
A silver nonwoven fabric recovery step of winding and collecting the silver nonwoven fabric by a rewinder;
, ≪ / RTI &
Further comprising heating the nonwoven fabric to a boiling point or higher of the silver solution by a heating stage supporting the nonwoven fabric so that the silver solution is uniformly adhered to the nonwoven fabric during the step of spraying the silver solution onto the nonwoven fabric A method for producing a silver membrane of a nonwoven fabric.
The method of claim 2,
Further comprising a drying step of drying the washed nonwoven fabric by a dryer between the nonwoven fabric washing step and the silver solution coating step.
delete The method of claim 2,
Wherein the incineration temperature of the nonwoven fabric is 400 to 500 占 폚.
A silver membrane produced by the silver membrane manufacturing method of the nonwoven fabric according to claim 2.
A method of manufacturing a supercapacitor using the silver film according to claim 6,
The silver film is coated with an activated carbon solution having active carbon particles dispersed in the silver film, and the silver membrane is coated on the heating stage, which has a suction function and generates a heating heat, To penetrate into the interior,
Wherein the heating temperature of the heating stage is a silver membrane of a nonwoven fabric having a boiling point or higher of the activated carbon solution.
A method for manufacturing a current collector for a battery using the silver film according to claim 6,
The silver film is coated with an activated carbon solution having active carbon particles dispersed in the silver film, and the silver membrane is coated on the heating stage, which has a suction function and generates a heating heat, Wherein the heating temperature of the heating stage is a silver membrane of a nonwoven fabric having a boiling point or higher of the activated carbon solution.
KR1020140164902A 2014-11-25 2014-11-25 Preparation method of a membrane having a non-woven tissue and thus the membrane is prepared by, and the current collector for the super capacitor or battery production method using a membrane having a non-woven tissue non-woven tissue KR101597535B1 (en)

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KR1020140164902A KR101597535B1 (en) 2014-11-25 2014-11-25 Preparation method of a membrane having a non-woven tissue and thus the membrane is prepared by, and the current collector for the super capacitor or battery production method using a membrane having a non-woven tissue non-woven tissue

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KR1020140164902A KR101597535B1 (en) 2014-11-25 2014-11-25 Preparation method of a membrane having a non-woven tissue and thus the membrane is prepared by, and the current collector for the super capacitor or battery production method using a membrane having a non-woven tissue non-woven tissue

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06212476A (en) * 1993-01-19 1994-08-02 Japan Vilene Co Ltd Production of electrode substrate for cell
KR20070071766A (en) * 2005-12-30 2007-07-04 주식회사 효성 The method of fabricating asymmetric ultrafiltration and microfiltration membrane by blending of silver nano particle
KR20100093051A (en) 2007-11-02 2010-08-24 피2아이 리미티드 Filtration membranes
KR20140065238A (en) * 2012-11-21 2014-05-29 (주)세프라텍 Hydrophilic metallic membranes and it's making method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06212476A (en) * 1993-01-19 1994-08-02 Japan Vilene Co Ltd Production of electrode substrate for cell
KR20070071766A (en) * 2005-12-30 2007-07-04 주식회사 효성 The method of fabricating asymmetric ultrafiltration and microfiltration membrane by blending of silver nano particle
KR20100093051A (en) 2007-11-02 2010-08-24 피2아이 리미티드 Filtration membranes
KR20140065238A (en) * 2012-11-21 2014-05-29 (주)세프라텍 Hydrophilic metallic membranes and it's making method

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