KR20140136216A - A method of current collector with cubic pattern by screen print and a capacitor using thereof - Google Patents
A method of current collector with cubic pattern by screen print and a capacitor using thereof Download PDFInfo
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- KR20140136216A KR20140136216A KR20130056456A KR20130056456A KR20140136216A KR 20140136216 A KR20140136216 A KR 20140136216A KR 20130056456 A KR20130056456 A KR 20130056456A KR 20130056456 A KR20130056456 A KR 20130056456A KR 20140136216 A KR20140136216 A KR 20140136216A
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000003990 capacitor Substances 0.000 title description 16
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 88
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- 238000005530 etching Methods 0.000 claims description 42
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 29
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- 239000000243 solution Substances 0.000 description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
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- 238000003795 desorption Methods 0.000 description 2
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/32—Processes for applying liquids or other fluent materials using means for protecting parts of a surface not to be coated, e.g. using stencils, resists
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F3/00—Electrolytic etching or polishing
- C25F3/02—Etching
- C25F3/04—Etching of light metals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/66—Current collectors
- H01G11/70—Current collectors characterised by their structure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2202/00—Metallic substrate
- B05D2202/20—Metallic substrate based on light metals
- B05D2202/25—Metallic substrate based on light metals based on Al
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/13—Energy storage using capacitors
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- Engineering & Computer Science (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
- Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
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- Microelectronics & Electronic Packaging (AREA)
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Abstract
Description
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing an aluminum current collector having a three-dimensional pattern structure using a screen print, and more particularly, A method of coating a conductive material such as nickel, tin or the like with a predetermined thickness on the surface of a current collector by forming a three-dimensional pattern structure on the surface of the aluminum current collector by selectively etching a predetermined pattern on the surface, .
Due to rising oil prices and global warming, technology in the field of alternative energy has attracted attention, among which energy storage technology has been rapidly developed with the lead of lithium ion secondary battery. However, supercapacitor is used as an alternative to rechargeable secondary battery which is limited in use in fields requiring high output due to its high electric capacity. However, a supercapacitor having a high output capacity is a technology study Gradually expanding the application range to the secondary battery region. In particular, compared to secondary batteries, which are difficult to utilize regenerative braking energy, ultra-high capacity capacitors can utilize regenerative braking energy easily and are being applied to a wider range of fields.
The ultra-high-capacity capacitors are charged and discharged repeatedly by using physical adsorption and desorption reactions of ions in the electrolyte using activated carbon having a large surface area. The role of aluminum, which has a surface area limit in conventional electrolytic capacitors, This substitution made it possible to dramatically improve the electrical capacity. In recent years, concepts such as ultra-high-capacity capacitors using a metal oxide or a carbon nanotube (CNT), a carbon nanofiber (CNF), a composite metal oxide or the like instead of activated carbon have appeared, .
The aluminum foil in the supercapacitor plays a role as a current collector to induce the electrons transferred from the activated carbon to the external circuit and to minimize the resistance generated when electrons are transferred from the activated carbon to the current collector Are required. For this purpose, it is possible to reduce the equivalent series resistance (ESR) of an ultra high capacity capacitor by increasing the contact area with the active material through etching of the surface of the current collector by an electrochemical method. Also, the surface area is much larger than aluminum, Researches have been carried out to improve the contact area between the active material and the current collector by applying a nickel foil as a current collector to lower the ESR of the ultra-high-capacity capacitor and increase the effective capacity. However, Commercialization of the applied ultra-high capacity capacitor has practical problems.
The conventional method for increasing the electric capacity of a supercapacitor is to replace the active material with a metal oxide which performs an oxidation-reduction reaction instead of the activated carbon which performs a physical adsorption and desorption reaction, or a carbon nanotube (CNT ), And the like. This method of replacing the active material has a problem that the first alternative active material is not produced in a large amount or that some production is made, the process equipment manufactured using the existing activated carbon can not be used as it is, and the price of the active material itself It is very expensive and has many problems in terms of cost.
In order to increase the contact area between the active material and the aluminum current collector so that the effective capacity of the ultra-high capacity capacitor can be increased only by the electrochemical etching method of the aluminum current collector which is currently performed using the electrolytic solution, It has a problem that can not be done.
In order to solve the above problems, the applicant of the present invention has disclosed a method of manufacturing an aluminum current collector having a three-dimensional pattern structure using a screen printer and a method of manufacturing an ultra-high capacity capacitor using the screen printer in Patent No. 10-1166149, There is a need to secure more durability.
SUMMARY OF THE INVENTION An object of the present invention is to solve the problems of the prior art described above by forming a pattern on a surface of a conventional aluminum collector using a screen print and selectively etching the aluminum housing The present invention provides a method of coating a surface of an aluminum current collector which can effectively increase the contact area between the whole and the active material and prevent the electrolytic solution and aluminum from directly reacting with each other by coating a conductive material on these surfaces.
In order to achieve the above object of the present invention,
Washing the aluminum foil collector and drying it with nitrogen (S1);
Placing a screen mask on the dried aluminum foil collector surface, applying a chemical resistant substance on the screen mask, and then pressing the screen mask so as to be transferred to the aluminum collector surface through the pattern formed with the chemical resistant substance (S2 );
Curing the chemical resistant substance transferred to the aluminum current collector to complete pattern formation on the aluminum current collector (S3);
(S4) a step of (S4) applying an AC power source by placing a current collector made of an aluminum foil having two carbon plates as respective counter electrodes and having a pattern formed of a chemical resistant material between two carbon plates, and firstly etching the aluminum current collector in the electrolyte;
Drying the etched aluminum current collector (S5);
A step (S6) of performing secondary etching using the two carbon plates as the counter electrode after the step (S5) and placing the aluminum current collector after the first etching between the opposite electrodes;
Washing and drying the secondary etched aluminum foil (S7); And plating the current collector with nickel or tin (S8).
The purity of the aluminum current collector in step S1 is preferably 99.00 to 99.99% and the thickness thereof is preferably 10 to 100 mu m. When the purity is lower than 99.00, the leakage current characteristic of the EDLC is deteriorated. When the purity is 100 If the thickness is less than 10 mu m, the depth that can be etched is limited to less than 10 mu m. When the depth of etching is low, the effect of the invention is lowered. When the thickness is less than 100 mu m As the thickness of the electrode increases, the volume of the electrode increases and thus the energy density decreases.
Further, it is preferable that the screen mask in the step (S2) uses at least one of nylon, deton, and stainless which shapes the pattern.
It is preferable that the pattern shape is 10 to 500 mu m in size and the interval is 10 to 500 mu m because if the size and the interval of the pattern shape are smaller than 10 mu m or larger than 500 mu m, So that the effect of the invention is lowered.
The resist material used in the step (S2) is a resist, and the pressing in the step (S2) is performed with a spatula made of a polyurethane material. The transfer thickness is preferably 0.5 to 50 mu m However, if the thickness of the transferred resin is less than 0.5 mu m, the photoresist solution tends to be broken when the collector is etched, so that the pattern is broken due to excessive etching. If the thickness exceeds 50 mu m, penetration of the etchant solution becomes difficult, The formation may not be completed completely.
If the drying temperature is more than 200 DEG C, the resin is broken. When the drying temperature is less than 50 DEG C, it takes a very long time to cure the resin If the drying time is less than 5 minutes, the degree of curing is insufficient. In the subsequent etching process, the resin is destroyed by the etching liquid and thus the pattern is not formed. When the drying time exceeds 60 minutes, This is because the resin removal can not be performed smoothly.
If the time for irradiating UV light (exposure time) is less than 5 minutes, the degree of curing is insufficient, and in the subsequent etching process, the etching solution The resin is destroyed and the pattern is not formed accordingly. If it exceeds 60 minutes, the resin is not smoothly removed in the resin removing step after the excessive curing.
In addition, it is preferable that the AC power source in the step S4 is in the range of 5 to 60 Hz in frequency and the current density is in the range of 0.1 to 10 A / cm 2. When the frequency is less than 5 Hz and the current density exceeds 10 A / cm 2, The etching at the current density exceeding 60 Hz and the current density exceeding 0.1 A / cm 2 proceeds less and the etching along the pattern is not smooth. The electrolyte in the step (S4) is composed of 20 g / L of Al ions and 0.5 It is preferable to use ~ 5M hydrochloric acid and 0.01 ~ 2M sulfuric acid because if there is more than 20 g / l of Al ions, the interferences of Al ions will become large and hinder the progress of etching, Etching is difficult to proceed at a sulfuric acid concentration of less than 5M and excessive etching may occur at a concentration of hydrochloric acid of more than 5M and a sulfuric acid concentration of more than 2M.
The first etching in the step S4 is performed at a temperature of 10 to 60 DEG C for 10 to 60 seconds because the etching does not progress well at a temperature lower than 10 DEG C and less than 10 seconds, This is because excessive etching occurs at a temperature exceeding 60 DEG C and a time exceeding 60 seconds.
The drying in the step S5 is performed by washing the aluminum current collector with distilled water and removing remnant chemical substances using a remover such as BC (butyl cellosolve) At a temperature of less than 50 ° C. and a temperature of less than 2 minutes at the time of drying, the aluminum surface is hydrated and the amorphous oxide film is formed due to insufficient drying, and a temperature of more than 500 ° C. and a temperature of more than 15 minutes The oxidation reaction proceeds on the aluminum surface and a crystalline oxide film can be formed.
Next, the secondary etching in the step S6 is performed by applying an AC power, and the AC power is preferably used in a range of a frequency of 10 to 90 Hz and a current density of 0.1 to 10 A / cm2. At a current density of less than 10 Hz and at a current density of more than 10 A / cm 2, excessive etching proceeds and pattern breakage may occur. At a current density of more than 90 Hz and less than 0.1 A / cm 2, etching proceeds less, This can not be done smoothly.
The secondary etching is preferably performed in an etchant containing 10 to 30 g / l of Al ions, 100 to 300 g / l of Cl ions, and 5 to 30 g / l of SO 4 ions, wherein more than 30 g / In the presence of Cl ions, the interferences of Al ions are increased and the progress of etching is inhibited. In the case of less than 100 g / l of Cl ions and less than 5 g / l of SO 4 ions, etching does not proceed and more than 300 g / l of Cl ions and more than 30 g / This is because the etching may proceed excessively.
The second etching is performed at 30 to 90 ° C. for 10 to 60 seconds. At a temperature of less than 30 ° C. and a time of less than 10 seconds, etching does not proceed well. At a temperature of more than 90 ° C. and a time of more than 60 seconds Excessive etching can be performed.
Washing and drying in the step S7 is carried out at a temperature of 50 to 500 ° C. for 2 to 15 minutes after washing with distilled water because the drying is performed at a temperature of less than 50 ° C. and a temperature of less than 2 minutes The hydration reaction proceeds on the aluminum surface to form an amorphous oxide film, and the oxidation reaction proceeds on the aluminum surface at a temperature exceeding 500 ° C. and a temperature exceeding 15 minutes, so that a crystalline oxide film can be formed.
Further, the pattern in the present invention is formed using a screen print.
The coating in the step S8 is performed by plating nickel or tin having conductivity on the aluminum current collector to a predetermined thickness, so that the current collector reacts with the electrolytic solution to prevent corrosion over time, The surface can be prevented from directly reacting with the electrolytic solution, so that the corrosion resistance and the durability can be increased.
The present invention provides a method for enlarging the surface area of an aluminum current collector that can effectively increase the contact area between an aluminum current collector and an active material, and an effect of providing a method of manufacturing an ultra-high capacity capacitor by improving the effective capacitance by applying the current collector And increase durability and corrosion resistance.
FIG. 1 is a photograph showing a drawing of an aluminum current collector having a three-dimensional pattern structure using a screen print manufactured through an embodiment. FIG.
FIG. 2 is a photograph showing an example of transferring a pattern of an acid-resistant substance such as photoresist or CR (chloroprene) of 70 mu m in size and 80 mu m in the interval of the shapes on the aluminum collector surface using a screen print.
FIG. 3 is a photograph showing an aluminum current collector after selectively etching only aluminum in a portion where a chemical substance such as resin or CR is not transferred.
Fig. 4 is a photograph showing an aluminum current collector after removing all the chemical or residual chemical substances such as CR or CR remaining on the surface of the aluminum current collector by a remover after etching.
5 is a configuration diagram of an ultra-high capacity capacitor electrode to which an aluminum current collector manufactured through the embodiment is applied.
6 is an internal configuration view of an ultra-high capacity capacitor manufactured by applying an aluminum current collector manufactured through the embodiment.
In order to carry out the present invention, the purity of aluminum is firstly 99.00 to 99.99%, and as the impurities, the organics on the aluminum collector surface of 10 to 100 μm added with 4,000 ppm of Cu, 2,000 ppm of Si and 2,000 ppm of Fe or less are removed To do this, 1) acetone solution 2) methanol solution 3) wash sequentially with distilled water and dry with nitrogen.
Next, a screen made of a material such as nylon, polyester, or stainless steel that has a shape of 10 to 500 μm in size and a pattern in which the intervals of the shapes are 10 to 500 μm in combination is formed by a photochemical method After a mask is placed on an aluminum current collector, a photo resist is applied on a screen mask, and a screen mask is pressed with a squeegee made of a polyurethane material to form a pattern in which a chemical- And uniformly transferred to the aluminum collector surface to a thickness of 0.5 to 50 탆.
After that, the chemical resistant material transferred to the current collector is completely cured at a temperature of 50 to 200 degrees for 5 to 60 minutes or UV light is irradiated for 10 to 500 seconds to be hardened to complete pattern formation on the aluminum current collector.
First, or later, 20 g / l or less of Al ions, 0.5 to 5 M of hydrochloric acid and 0.01 to 2 M of sulfuric acid are added to prepare a first etching electrolytic solution.
After the pattern formation, two carbon plates are used as respective counter electrodes, and an AC power source is applied with the aluminum current collector transferred with the chemical resistant material therebetween. The frequency of the AC power source is 5 Hz to 60 Hz, 10 A / cm 2, and the aluminum current collector is etched for 10 to 60 seconds at the temperature of the electrolyte between 10 and 60 ° C.
The etched aluminum current collector is washed with distilled water, and then all remaining chemical substances are removed by using a remover such as BC (Butyl Cellosolve), followed by drying at 50 to 500 ° C. for 2 to 15 minutes. Then, a second etching electrolytic solution was prepared by adding 10 to 30 g / l of Al ions, 100 to 300 g / l of Cl ions, and 5 to 30 g / l of SO 4 ions, The aluminum current collector subjected to the first etching as the counter electrode is placed therebetween and the AC power source is applied. The frequency of the AC power is 10 to 90 Hz, the current density is 0.1 to 10 A / cm 2, The aluminum current collector is secondly etched for 10 to 60 seconds at the electrolytic solution temperature, the aluminum current collector is washed with distilled water and dried at a temperature of 50 to 500 ° C for 2 to 15 minutes to complete the present invention.
Hereinafter, the present invention will be described in detail with reference to the following examples. However, it should be understood that the present invention is not limited to the following examples.
[Example 1] Production of an aluminum current collector having a three-dimensional pattern structure by screen printing
An aluminum foil having a purity of 99.99% and a thickness of 0.040 mm was sequentially washed with 1) acetone solution 2) methanol solution 3) distilled water, and then dried with nitrogen.
A screen mask having a shape of 70 mu m in size and a spacing of 80 mu m in the shape of a pattern is placed on the aluminum current collector, and then the CR is applied on the screen mask and the screen mask is pressed with a spatula to form the CR And then transferred to the surface of the aluminum collector body at a thickness of 15 mu m.
15 g / l of Al ions, 1 M hydrochloric acid and 2 M sulfuric acid were added to prepare a first etched electrolytic solution. Two carbon plates were used as respective counter electrodes, and an aluminum current collector patterned with a photosensitive liquid was placed therebetween, Power was applied.
The aluminum current collector was firstly etched for 50 seconds in an electrolytic solution having an alternating current power of 50 Hz and a current density of 3 A / cm 2 and a temperature of 45 ° C., and the aluminum current collector thus etched was washed with distilled water.
All residual CR (chloroprene) on the surface of the aluminum collector was removed with toluene (toluene), washed with distilled water, and dried at 125 ° C for 10 minutes.
An aluminum electrolytic solution prepared by adding 10 g / l of Al ions, 120 g / l of Cl ions and 20 g / l of SO 4 ions to the second etching electrolyte, and then subjecting the two carbon plates to respective counter electrodes and subjected to the first etching, And an AC power source was applied so as to be positioned therebetween.
The frequency of the AC power source was 30 Hz, the current density was 1 A / cm 2, and the aluminum current collector was subjected to the secondary etching for 45 seconds at the electrolyte temperature of 45.
The secondary-etched aluminum current collector was washed with distilled water and then dried at 125 DEG C for 10 minutes.
An aluminum current collector having a three-dimensional pattern surface structure as described above is shown in Fig.
[Example 2] Fabrication of an ultra-high capacity capacitor using an aluminum current collector having a three-dimensional pattern structure
80 g of activated carbon (specific surface area: 2,100 m 2 / g), 20 g of carbon black and 4 g of binder were added to the stirring vessel, stirred for 30 minutes using a stirrer, and then 200 g of pure water was added thereto. The mixture was stirred again for 200 minutes and 100 g of pure water and 4 g of binder were added. The slurry was prepared by further stirring.
The slurry was coated at 0.6 g / cm < 3 > on an aluminum current collector having a three-dimensional pattern structure manufactured by using screen printing to prepare an electrode.
The electrode was subjected to primary drying at 70 ° C for 20 minutes and then secondary drying at 100 ° C for 240 minutes.
The dried electrode was cut to a size of 3.5 cm × 4.5 cm (15.75 cm 2), and two sheets were prepared. One electrode prepared in the above-described manner, the electrolytic solution, and the remaining one electrode prepared above were laminated in this order. And an aluminum pouch was put on the outside.
Electrolyte (1M TEABF4 / ACN) was put into the pouch, vacuum impregnated, and sealed to prepare a supercapacitor.
[Comparative Example]
80 g of activated carbon (specific surface area: 2,100 m 2 / g), 20 g of carbon black and 4 g of binder were added to the stirring vessel, stirred for 30 minutes using a stirrer, and then 200 g of pure water was added thereto. The mixture was stirred again for 200 minutes and 100 g of pure water and 4 g of binder were added. The slurry was prepared by further stirring.
In general, the slurry was coated at 0.6 g / cm 3 on an aluminum current collector for EDLC sold in the market to prepare an electrode.
The electrode was subjected to primary drying at 70 ° C for 20 minutes and then secondary drying at 100 ° C for 240 minutes.
The dried electrode was cut to a size of 3.5 cm × 4.5 cm (15.75 cm 2), and two sheets were prepared. One electrode prepared in the above-described manner, the electrolytic solution, and the remaining one electrode prepared above were laminated in this order. Exterior is carried out with aluminum pouch.
Electrolyte (1M TEABF4 / ACN) was put into the pouch, vacuum impregnated, and sealed to prepare a supercapacitor.
[Evaluation example]
All of the ultra-high capacity capacitors prepared in Examples and Comparative Examples were charged at a constant current of 15.75 mA and a constant voltage of 2.7 V, maintained for 30 minutes, and then discharged at a constant current (15.75 mA).
* 64 Capacity was measured under the above conditions and the results are shown in Table 1.
As can be seen from the above table, according to the present invention, an aluminum current collector capable of providing an ultra-high capacity capacitor is provided.
10: active material
20: pattern-etched aluminum collector
30: Tell me where
40: Negative electrode with patterned aluminum collector
50: A pattern-etched aluminum current collector
Claims (1)
Placing a screen mask on the dried aluminum foil collector surface, applying a chemical resistant substance on the screen mask, and then pressing the screen mask so as to be transferred to the surface of the aluminum collector through the pattern formed with the chemical resistant substance (S2 );
Curing the chemical resistant substance transferred to the aluminum current collector to complete pattern formation on the aluminum current collector (S3);
(S4) a step of (S4) applying an AC power source by placing a current collector made of an aluminum foil having two carbon plates as respective counter electrodes and having a pattern formed of a chemical resistant material between two carbon plates, and firstly etching the aluminum current collector in the electrolyte;
Drying the etched aluminum current collector (S5);
A step (S6) of performing secondary etching using the two carbon plates as the counter electrode after the step (S5) and placing the aluminum current collector after the first etching between the opposite electrodes;
Washing and drying the secondary etched aluminum foil (S7); And a step (S8) of coating a conductive material on the surface of the current collector, wherein the aluminum current collector in the step (S1) has a purity of 99.00 to 99.99% and a thickness of 10 to 100 占 퐉. A method for manufacturing an aluminum current collector having a three-dimensional pattern structure.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20130056456A KR20140136216A (en) | 2013-05-20 | 2013-05-20 | A method of current collector with cubic pattern by screen print and a capacitor using thereof |
| JP2013155698A JP2014229889A (en) | 2013-05-20 | 2013-07-26 | Method for coating aluminum current collector surface having three-dimensional pattern structure using screen print |
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| Application Number | Priority Date | Filing Date | Title |
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| KR20130056456A KR20140136216A (en) | 2013-05-20 | 2013-05-20 | A method of current collector with cubic pattern by screen print and a capacitor using thereof |
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| Publication Number | Publication Date |
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| KR20140136216A true KR20140136216A (en) | 2014-11-28 |
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| KR20130056456A KR20140136216A (en) | 2013-05-20 | 2013-05-20 | A method of current collector with cubic pattern by screen print and a capacitor using thereof |
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| JP (1) | JP2014229889A (en) |
| KR (1) | KR20140136216A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11088218B2 (en) | 2017-11-27 | 2021-08-10 | Samsung Display Co., Ltd. | Electric panel and electronic device including the same |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105869900B (en) * | 2015-02-06 | 2018-03-06 | 韩国Jcc株式会社 | High-temperature long life electrode of double layer capacitor and preparation method thereof |
-
2013
- 2013-05-20 KR KR20130056456A patent/KR20140136216A/en not_active Application Discontinuation
- 2013-07-26 JP JP2013155698A patent/JP2014229889A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11088218B2 (en) | 2017-11-27 | 2021-08-10 | Samsung Display Co., Ltd. | Electric panel and electronic device including the same |
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| Publication number | Publication date |
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| JP2014229889A (en) | 2014-12-08 |
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