KR101635763B1 - Composite for ultracapacitor electrode, manufacturing method of ultracapacitor electrode using the composite, and ultracapacitor manufactured by the method - Google Patents
Composite for ultracapacitor electrode, manufacturing method of ultracapacitor electrode using the composite, and ultracapacitor manufactured by the method Download PDFInfo
- Publication number
- KR101635763B1 KR101635763B1 KR1020150113545A KR20150113545A KR101635763B1 KR 101635763 B1 KR101635763 B1 KR 101635763B1 KR 1020150113545 A KR1020150113545 A KR 1020150113545A KR 20150113545 A KR20150113545 A KR 20150113545A KR 101635763 B1 KR101635763 B1 KR 101635763B1
- Authority
- KR
- South Korea
- Prior art keywords
- electrode
- ultracapacitor
- weight
- parts
- active material
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-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
- H01G11/22—Electrodes
- H01G11/30—Electrodes characterised by their material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-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
- H01G11/22—Electrodes
- H01G11/30—Electrodes characterised by their material
- H01G11/32—Carbon-based
- H01G11/34—Carbon-based characterised by carbonisation or activation of carbon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-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
- H01G11/22—Electrodes
- H01G11/30—Electrodes characterised by their material
- H01G11/32—Carbon-based
- H01G11/38—Carbon pastes or blends; Binders or additives therein
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-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
- H01G11/22—Electrodes
- H01G11/30—Electrodes characterised by their material
- H01G11/32—Carbon-based
- H01G11/42—Powders or particles, e.g. composition thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-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
- H01G11/78—Cases; Housings; Encapsulations; Mountings
- H01G11/80—Gaskets; Sealings
Abstract
Description
The present invention relates to a composition for an ultracapacitor electrode, a method for manufacturing an ultracapacitor electrode using the same, and an ultracapacitor manufactured using the method. More particularly, the present invention relates to an ultracapacitor, The present invention relates to a composition for an ultracapacitor electrode capable of exhibiting a high capacity characteristic due to a low rate of reduction, a method for manufacturing an ultracapacitor electrode using the composition, and an ultracapacitor manufactured using the method.
In general, an ultracapacitor is also referred to as an electric double layer capacitor (EDLC) or a supercapacitor, which is formed by a pair of electrodes and a conductor, each having a different sign at the interface between the electrode and the conductor, (Electric double layer) of the charge / discharge operation is used, and the deterioration due to the repetition of the charging / discharging operation is very small, so that the device is not required to be repaired. Accordingly, ultracapacitors are mainly used for IC (integrated circuit) backup of various electric and electronic devices. Recently, they have been widely used for toys, solar energy storage, HEV (hybrid electric vehicle) have.
Such an ultracapacitor generally includes two electrodes of a positive electrode and a negative electrode impregnated with an electrolytic solution, a separator of a porous material interposed between the two electrodes to allow only ion conduction and to prevent insulation and short circuit, A gasket for preventing leakage of electricity and preventing insulation and short-circuit, and a metal cap as a conductor for packaging them. Then, one or more unit cells (normally 2 to 6 in the case of a coin type) are stacked in series and the two terminals of the positive and negative electrodes are combined.
In recent years, there is a need for a high capacity ultracapacitor having high durability, high electrode density and low capacitance reduction rate, and studies are being conducted to realize a high capacity ultra capacitor having high durability, high electrode density and low capacitance reduction rate.
The present invention provides a composition for an ultracapacitor electrode capable of enhancing durability, electrode density and flexibility of an electrode, exhibiting a high capacity characteristic due to a low rate of capacitance reduction, a method of manufacturing an ultracapacitor electrode using the composition, And an ultracapacitor manufactured using the same.
The present invention relates to an electrode active material, 0.1 to 20 parts by weight of a conductive material per 100 parts by weight of the electrode active material, 1 to 20 parts by weight of a binder with respect to 100 parts by weight of the electrode active material, Wherein the binder comprises a sulfonated poly (etheretherketone) (SPEEK) and a polyvinyl butyral. The present invention also provides a composition for an ultracapacitor electrode.
The above SPEEK (sulfonated poly (etheretherketone)) and polyvinyl butyral are preferably mixed in a weight ratio of 1: 0.1 to 10 to form the binder.
The electrode active material may include a porous activated carbon powder, the specific surface area of the porous activated carbon powder ranges from 500 to 3,000 m 2 / g, and the particle size of the porous activated carbon powder ranges from 0.9 to 20 μm.
The dispersion medium may contain ethanol.
In addition, the present invention relates to an electrode active material, 0.1 to 20 parts by weight of a conductive material with respect to 100 parts by weight of the electrode active material, 1 to 20 parts by weight of a binder with respect to 100 parts by weight of the electrode active material, To 300 parts by weight of an ultracapacitor electrode to form a composition for an ultracapacitor electrode; forming the electrode composition by pressing the composition for the ultracapacitor electrode; or coating the composition for the ultracapacitor electrode on a metal foil or a current collector to form an electrode Forming an ultracapacitor electrode by forming an electrode in the form of an electrode by pressing the composition for the ultracapacitor electrode into a sheet state and attaching it to a metal foil or current collector; The binder may be selected from the group consisting of sulfonated poly (etheretherketone) (SPEEK) and polyvinyl butyral The present invention also provides a method of manufacturing an ultracapacitor electrode.
The above SPEEK (sulfonated poly (etheretherketone)) and polyvinyl butyral are preferably mixed in a weight ratio of 1: 0.1 to 10 to form the binder.
The electrode active material may include a porous activated carbon powder, the specific surface area of the porous activated carbon powder ranges from 500 to 3,000 m 2 / g, and the particle size of the porous activated carbon powder ranges from 0.9 to 20 μm.
The dispersion medium may contain ethanol.
The present invention also provides a method of manufacturing a thin film transistor comprising an anode comprising an ultracapacitor electrode manufactured by the above method, a cathode comprising an ultra capacitor electrode manufactured by the above method, and a cathode disposed between the anode and the cathode, And a gasket for sealing the metal cap, the metal cap having the anode, the separator, and the cathode disposed therein and having an electrolyte injected thereinto, and a gasket for sealing the metal cap.
The present invention also provides a method of manufacturing a thin film transistor comprising a first separator for preventing a short circuit, an anode comprising an ultra-capacitor electrode manufactured by the above method, a second separator for preventing a short circuit between the anode and the cathode, A first lead connected to the negative electrode, a second lead connected to the positive electrode, a metal cap accommodating the negative revolver, and a second lead connected to the negative electrode, wherein the negative electrode comprises a capacitor electrode, And a sealing rubber for sealing the metal cap, wherein the winding revolvers are impregnated with an electrolytic solution in which a lithium salt is dissolved.
According to the composition for an ultracapacitor electrode of the present invention, durability, electrode density and flexibility of an electrode can be improved by using sulfonated poly (etheretherketone) (SPEEK) and polyvinyl butyral (PVB) as a binder, Can exhibit high-capacity characteristics. Further, when the binder is used, an ultracapacitor electrode having improved impregnability of an electrolyte solution, high reliability at high voltage and high temperature, improved withstand voltage characteristics, and excellent electrical characteristics and heat resistance can be manufactured have.
1 is a cross-sectional view of a coin type ultracapacitor according to an example.
FIGS. 2 to 5 are views showing a winding type ultracapacitor according to an example.
6 is a graph showing a capacitance reduction ratio of a coin cell manufactured according to Experimental Examples 1 to 4. FIG.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, it should be understood that the following embodiments are provided so that those skilled in the art will be able to fully understand the present invention, and that various modifications may be made without departing from the scope of the present invention. It is not. Wherein like reference numerals refer to like elements throughout.
The inventors of the present invention have studied a composition for an ultracapacitor electrode which can increase durability, electrode density and flexibility of an electrode, and exhibit a high capacity characteristic due to a low capacitance reduction ratio. Particularly, a binder capable of producing an ultracapacitor electrode having improved impregnability of an electrolyte solution, improved reliability at high voltage and high temperature, improved withstand voltage characteristics, and excellent electrical characteristics and heat resistance was studied .
The composition for an ultracapacitor electrode according to a preferred embodiment of the present invention comprises an electrode active material, 0.1 to 20 parts by weight of a conductive material per 100 parts by weight of the electrode active material, 1 to 20 parts by weight of a binder with respect to 100 parts by weight of the electrode active material, And 100 to 300 parts by weight of a dispersion medium based on 100 parts by weight of the electrode active material, wherein the binder comprises sulfonated poly (etheretherketone) (SPEEK) and polyvinyl butyral.
The electrode active material may include a porous activated carbon powder, the specific surface area of the porous activated carbon powder ranges from 500 to 3,000 m 2 / g, and the particle size of the porous activated carbon powder ranges from 0.9 to 20 μm.
It is preferable that the binder is a mixture of SPEEK (sulfonated poly (etheretherketone)) and polyvinyl butyral in a weight ratio of 1: 0.1 to 10. When such a binder is used, durability, electrode density and flexibility of the electrode can be increased, and the capacitance reduction ratio is low, so that high capacity characteristics can be exhibited. Further, when the binder is used, an ultracapacitor electrode having improved impregnability of an electrolyte solution, high reliability at high voltage and high temperature, improved withstand voltage characteristics, and excellent electrical characteristics and heat resistance can be manufactured have.
The dispersion medium may include an organic solvent such as ethanol (EtOH), acetone, isopropyl alcohol, N-methyl-2-pyrrolidone (NMP), propylene glycol However, it is preferable to include ethanol in consideration of the dispersibility of the binder.
The method for manufacturing an ultracapacitor electrode according to a preferred embodiment of the present invention comprises: preparing an electrode active material, 0.1 to 20 parts by weight of a conductive material, 100 parts by weight of the electrode active material, 1 to 20 parts by weight of a binder, Preparing a composition for an ultracapacitor electrode by mixing 100 to 300 parts by weight of a dispersion medium with respect to 100 parts by weight of the electrode active material; forming an electrode form of the composition for the ultracapacitor electrode by pressing the composition for the ultracapacitor electrode; Forming an electrode in the form of an electrode by coating a foil or a current collector on the electrode or shaping the ultracapacitor electrode composition into a sheet state by pushing the composition for the ultracapacitor electrode with a metal foil or a current collector to form an electrode; Forming a capacitor electrode, wherein the binder is selected from the group consisting of SPEEK ed polyether etherketone) and polyvinyl butyral (polyvinyl butyral).
The electrode active material may include a porous activated carbon powder, the specific surface area of the porous activated carbon powder ranges from 500 to 3,000 m 2 / g, and the particle size of the porous activated carbon powder ranges from 0.9 to 20 μm.
It is preferable that the binder is a mixture of SPEEK (sulfonated poly (etheretherketone)) and polyvinyl butyral in a weight ratio of 1: 0.1 to 10.
The dispersion medium may include an organic solvent such as ethanol (EtOH), acetone, isopropyl alcohol, N-methyl-2-pyrrolidone (NMP), propylene glycol However, it is preferable to include ethanol in consideration of the dispersibility of the binder.
Hereinafter, a method of manufacturing an ultracapacitor electrode using the composition for an ultracapacitor electrode will be described in more detail.
An electrode active material, a conductive material, a binder and a dispersion medium are mixed to prepare a composition for an ultracapacitor electrode.
The composition for the ultracapacitor electrode comprises 0.1 to 20 parts by weight of a conductive material, 100 to 20 parts by weight of a binder, 100 to 20 parts by weight of a binder, 100 parts by weight of the electrode active material, 100 to 300 parts by weight.
The electrode active material may include a porous activated carbon powder, the specific surface area of the porous activated carbon powder ranges from 500 to 3,000 m 2 / g, and the particle size of the porous activated carbon powder ranges from 0.9 to 20 μm. The pores formed in the porous activated carbon powder serve to provide a passage through which the electrolyte ions are introduced or discharged.
The conductive material is not particularly limited as long as it is an electron conductive material which does not cause a chemical change. Examples of the conductive material include natural graphite, artificial graphite, carbon black, acetylene black, Ketjen black, Super-P black, carbon fiber, , Metal powder such as aluminum and silver, or metal fiber. The conductive material is preferably contained in the composition for the ultracapacitor electrode in an amount of 0.1 to 20 parts by weight based on 100 parts by weight of the electrode active material.
The binder may include sulfonated poly (etheretherketone) (SPEEK) and polyvinyl butyral. When such a binder is used, durability, electrode density and flexibility of the electrode can be increased, and the capacitance reduction ratio is low, so that high capacity characteristics can be exhibited. Further, when the binder is used, an ultracapacitor electrode having improved impregnability of an electrolyte solution, high reliability at high voltage and high temperature, improved withstand voltage characteristics, and excellent electrical characteristics and heat resistance can be manufactured have. The binder is preferably contained in the composition for the ultracapacitor electrode in an amount of 1 to 20 parts by weight based on 100 parts by weight of the electrode active material.
The dispersion medium may be an organic solvent such as ethanol (EtOH), acetone, isopropyl alcohol, N-methyl-2-pyrrolidone (NMP), propylene glycol , The dispersibility of the binder, and the like. The dispersion medium is preferably contained in the composition for the ultracapacitor electrode in an amount of 100 to 300 parts by weight based on 100 parts by weight of the electrode active material.
Since the composition for the electrode of the ultracapacitor is in a kneaded state, it may be difficult to uniformly mix (completely disperse). The composition for a predetermined time (for example, 10 minutes to 12 hours) may be mixed with a high- The composition for an ultracapacitor electrode suitable for electrode production can be obtained. A high-speed mixer, such as a planetary mixer, enables the preparation of compositions for uniformly mixed ultracapacitor electrodes.
A composition for an ultracapacitor electrode mixed with an electrode active material, a conductive material and a binder dispersion medium may be formed by pressing to form an electrode, or the composition for the ultracapacitor electrode may be coated on a metal foil or a current collector to form an electrode, The composition for the electrode is formed into a sheet by pushing it with a roller and attached to a metal foil or a current collector to form an electrode and the resultant formed in an electrode form is dried at a temperature of 100 ° C to 350 ° C to form an electrode.
More specifically explaining an example of forming the electrode, the composition for an ultracapacitor electrode can be pressed and formed by using a roll press molding machine. The roll press forming machine aims at improving the electrode density through rolling and controlling the thickness of the electrode. The roll press forming machine is provided with a controller capable of controlling the thickness and heating temperature of rolls and rolls at the upper and lower ends, ≪ / RTI > As the electrode in the roll state passes the roll press, the rolling process is carried out and the roll is rolled again to complete the electrode. At this time, the pressing pressure of the roll press is preferably 1 to 20 ton / cm 2, and the roll temperature is preferably 0 to 150 캜. The composition for an ultracapacitor electrode subjected to the press-bonding process as described above is subjected to a drying process. The drying process is carried out at a temperature of 100 ° C to 350 ° C, preferably 150 ° C to 300 ° C. If the drying temperature is less than 100 ° C, evaporation of the dispersion medium is difficult and it is not preferable because oxidation of the conductive material may occur during drying at a high temperature exceeding 350 ° C. Therefore, the drying temperature is preferably 100 占 폚 or more and not exceeding 350 占 폚. The drying process is preferably carried out at the above temperature for about 10 minutes to 12 hours. Such a drying process binds the electrode active material and the conductive material particles to improve the strength of the electrode.
In another example of forming the electrode, the composition for the electrode of the ultracapacitor may be a metal foil such as a Ti foil, an Al foil, or an Al etching foil, Alternatively, the composition for the ultracapacitor electrode may be coated in a sheet state (rubber type) by pushing it with a roller and attached to a metal foil or a current collector to form an anode or a cathode. The aluminum etched foil means that the aluminum foil is etched in a concavo-convex shape. The anode or cathode shape after the above-mentioned process is subjected to a drying process. The drying process is carried out at a temperature of 100 ° C to 350 ° C, preferably 150 ° C to 300 ° C. If the drying temperature is less than 100 ° C, evaporation of the dispersion medium is difficult and it is not preferable because oxidation of the conductive material may occur during drying at a high temperature exceeding 350 ° C. Therefore, the drying temperature is preferably 100 占 폚 or more and not exceeding 350 占 폚. The drying process is preferably carried out at the above temperature for about 10 minutes to 6 hours. Through the drying process, the electrode active material and the conductive material particles are bound to improve the strength of the electrode.
The ultracapacitor electrode manufactured as described above can be applied to a small coin type ultracapacitor as shown in Fig. 1, a wound type ultracapacitor as shown in Figs. 2 to 5, and the like.
FIG. 1 is a sectional view of a coin-type ultracapacitor to which the ultra-capacitor electrode is applied according to an embodiment of the present invention. 1,
The coin type ultracapacitor includes an
The separator may be a battery such as a polyethylene nonwoven fabric, a polypropylene nonwoven fabric, a polyester nonwoven fabric, a polyacrylonitrile porous separator, a poly (vinylidene fluoride) hexafluoropropane copolymer porous separator, a cellulose porous separator, a kraft paper or a rayon fiber, And is not particularly limited as long as it is a membrane commonly used in the field.
On the other hand, an electrolytic solution filled in the ultracapacitor is propylene carbonate (PC; propylene carbonate), acetonitrile (AN; acetonitrile) and sulfolane (SL; sulfolane) in at least one solvent selected from TEABF 4 (tetraethylammonium tetrafluoborate) and TEMABF 4 ( triethylmethylammonium tetrafluoborate) may be used. Also, the electrolytic solution may include one or more ionic liquids selected from 1-ethyl-3-methyl imidazolium tetrafluoroborate (EMIBF 4 ) and 1-ethyl-3-methyl imidazolium bis (trifluoromethanesulfonyl) imide .
FIGS. 2 to 5 are views showing the state of use of the ultracapacitor electrode according to another example, and showing a wound ultracapacitor to which an ultracapacitor electrode is applied. A method of manufacturing the wound-type ultracapacitor will be described in detail with reference to FIGS. 2 to 5. FIG.
As shown in FIG. 2, lead
3, the
The
As shown in Fig. 4, a sealing
The electrolytic solution is injected so that the roll-shaped winding element 175 (the
The wound-type ultracapacitor fabricated in this manner is schematically shown in Fig.
Hereinafter, experimental examples according to the present invention will be specifically shown, and the present invention is not limited to the following experimental examples.
<Experimental Example 1>
100 parts by weight of the porous activated carbon powder as an electrode active material and 5 parts by weight of Super-P black as a conductive material were dry-mixed. The porous activated carbon powder had a specific surface area of 2300 m < 2 > / g and an average particle diameter of 6 mu m.
2 parts by weight of carboxymethyl cellulose (CMC) was added to distilled water as a dispersion medium to 100 parts by weight of the porous activated carbon powder and mixed.
The mixture containing the porous activated carbon powder and the conductive material and the mixture containing carboxymethyl cellulose (CMC) and distilled water were mixed and dispersed by stirring at a speed of 2000 rpm for 20 minutes using a high-speed mixer. The porous activated
The composition for the ultracapacitor electrode was coated on an aluminum current collector, dried at 120 ° C to remove the solvent, and pressed through a rolling roll to prepare an electrode.
The fabricated ultra capacitor electrode specimen was applied to a 20 mm high 32 mm coin cell (coin type ultracapacitor) to measure the capacitance decreasing rate with the test time, and the result was measured. In preparing the coin cell, electrolyte containing propylene carbonate (PC) solvent containing 1M of tetraethylammonium tetrafluoborate (TEABF 4 ) was used as the electrolyte and TF 4035 (manufactured by NKK Corporation of Japan) was used as the separator.
High Temperature Reliability Test The test conditions were measured up to 1000 hours at 60 ℃ and 2.7V.
<Experimental Example 2>
100 parts by weight of the porous activated carbon powder as an electrode active material and 5 parts by weight of Super-P black as a conductive material were dry-mixed. The porous activated carbon powder had a specific surface area of 2300 m < 2 > / g and an average particle diameter of 6 mu m.
8 parts by weight of polyvinyl butyral (PVB) was added to ethanol as a dispersion medium with respect to 100 parts by weight of the porous activated carbon powder, followed by mixing.
The mixture containing the porous activated carbon powder and the conductive material and the mixture containing polyvinyl butyral (PVB) and ethanol was mixed and stirred at a speed of 2000 rpm for 20 minutes using a high-speed mixer to prepare a composition for an ultracapacitor electrode Respectively.
The subsequent process was the same as that of Experimental Example 1 to fabricate an ultracapacitor electrode specimen. The manufactured capacitor electrode specimen was applied to a cell having a diameter of 20 mm and a height of 32 mm to measure a capatitance decreasing rate according to the test time. Were measured.
<Experimental Example 3>
100 parts by weight of the porous activated carbon powder as an electrode active material and 5 parts by weight of Super-P black as a conductive material were dry-mixed. The porous activated carbon powder had a specific surface area of 2300 m < 2 > / g and an average particle diameter of 6 mu m.
SPEEK (polyether etherketone) powder (Victrex Ltd.) was dissolved in 98% sulfuric acid, washed with distilled water until pH 7, and dried to obtain SPEEK (sulfonated poly (etheretherketone)).
8 parts by weight of SPEEK (sulfonated poly (etheretherketone)) was added to 100 parts by weight of the porous activated carbon powder in ethanol as a dispersion medium and mixed.
The mixture containing the porous activated carbon powder and the conductive material and the mixture containing SPEEK (sulfonated poly (etheretherketone)) and ethanol was mixed and stirred at a speed of 2000 rpm for 20 minutes using a high-speed mixer to prepare a composition for ultracapacitor electrode .
The subsequent process was the same as that of Experimental Example 1 to fabricate an ultracapacitor electrode specimen. The manufactured capacitor electrode specimen was applied to a cell having a diameter of 20 mm and a height of 32 mm to measure a capatitance decreasing rate according to the test time. Were measured.
<Experimental Example 4>
100 parts by weight of the porous activated carbon powder as an electrode active material and 5 parts by weight of Super-P black as a conductive material were dry-mixed. The porous activated carbon powder had a specific surface area of 2300 m < 2 > / g and an average particle diameter of 6 mu m.
SPEEK (polyether etherketone) powder (Victrex Ltd.) was dissolved in 98% sulfuric acid, washed with distilled water until pH 7, and dried to obtain SPEEK (sulfonated poly (etheretherketone)).
8 parts of SPEEK (sulfonated poly (etheretherketone)) and polyvinyl butyral (PVB) were added to 100 parts by weight of the porous activated carbon powder in ethanol as a dispersion medium. At this time, SPEEK (sulfonated poly (etheretherketone)) and polyvinyl butyral (PVB) were mixed at a weight ratio of 1: 1.
The mixture containing the porous activated carbon powder and the conductive material was mixed with a mixture containing SPEEK (sulfonated poly (etheretherketone)), polyvinyl butyral (PVB) and ethanol, and the mixture was stirred at a speed of 2000 rpm for 20 minutes Followed by stirring to prepare a composition for an ultracapacitor electrode.
The subsequent process was the same as that of Experimental Example 1 to fabricate an ultracapacitor electrode specimen. The manufactured capacitor electrode specimen was applied to a cell having a diameter of 20 mm and a height of 32 mm to measure a capatitance decreasing rate according to the test time. Were measured.
[Electrolyte Impregnation Test]
Ultrasonic Capacitor Electrode solution (electrolyte containing 1M TEABF 4 in propylene carbonate (PC)) was dropped on the specimen and vacuum impregnation was performed, and the disappearance time from the surface was visually measured.
As shown in Table 1, the ultracapacitor electrode specimen prepared according to Experimental Example 4 has the lowest electrolyte impregnation property. Also, the electrode density of the ultracapacitor electrode specimen produced according to Experimental Example 4 was the highest.
FIG. 6 shows the capacitance reduction ratio of the coin cell (coin type ultracapacitor) manufactured according to Experimental Examples 1 to 4. 6 (a) is for a coin cell manufactured according to Experimental Example 1, (b) is for a coin cell manufactured according to Experimental Example 2, (c) is a coin cell prepared according to Experimental Example 3, (D) is for a coin cell manufactured according to Experimental Example 4, and Fig.
6, Experimental Example 2 using polyvinyl butyral (PVB) as a binder as compared with Experimental Example 1 using carboxymethylcellulose (CMC) and styrene-butadiene rubber (SBR) as binders and SPEEK (etheretherketone)) in the case of Experimental Example 3 showed a low capacitance reduction rate, and the capacitance of the coin cell manufactured in Experimental Example 4 was the lowest.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, This is possible.
110: cathode 120: anode
130: first lead wire 140: second lead wire
150: first separator 160: second separator
170: Adhesive tape 175: Winding element
180: sealing rubber 190: metal cap
192: Gasket
Claims (10)
0.1 to 20 parts by weight of a conductive material with respect to 100 parts by weight of the electrode active material;
1 to 20 parts by weight of a binder with respect to 100 parts by weight of the electrode active material;
And 100 to 300 parts by weight of a dispersion medium based on 100 parts by weight of the electrode active material,
Wherein the binder comprises sulfonated poly (etheretherketone) (SPEEK) and polyvinyl butyral.
Wherein the specific surface area of the porous activated carbon powder ranges from 500 to 3,000 m < 2 > / g,
Wherein the porous activated carbon powder has a particle diameter in the range of 0.9 to 20 占 퐉.
The composition for the ultracapacitor electrode may be formed by pressing to form an electrode, or the composition for the ultracapacitor electrode may be coated on the metal foil or the current collector to form an electrode, or the composition for the electrode of the ultracapacitor may be rolled into a sheet state Forming an electrode in the form of a metal foil or a current collector; And
And drying the resultant product in the form of an electrode to form an ultracapacitor electrode,
Wherein the binder comprises SPEEK (sulfonated poly (etheretherketone)) and polyvinyl butyral.
Wherein the specific surface area of the porous activated carbon powder ranges from 500 to 3,000 m < 2 > / g,
Wherein the porous activated carbon powder has a particle diameter in the range of 0.9 to 20 占 퐉.
An anode made of an ultracapacitor electrode manufactured by the method according to claim 5;
A separation membrane disposed between the anode and the cathode and for preventing a short circuit between the anode and the cathode;
A metal cap in which the anode, the separator, and the cathode are disposed and into which an electrolyte is injected; And
And a gasket for sealing the metal cap.
A first lead wire connected to the negative electrode;
A second lead wire connected to the positive electrode;
A metal cap for receiving the book revolver; And
And a sealing rubber for sealing the metal cap,
Wherein the winding revolvers are impregnated with an electrolytic solution in which a lithium salt is dissolved.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150113545A KR101635763B1 (en) | 2015-08-12 | 2015-08-12 | Composite for ultracapacitor electrode, manufacturing method of ultracapacitor electrode using the composite, and ultracapacitor manufactured by the method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150113545A KR101635763B1 (en) | 2015-08-12 | 2015-08-12 | Composite for ultracapacitor electrode, manufacturing method of ultracapacitor electrode using the composite, and ultracapacitor manufactured by the method |
Publications (1)
Publication Number | Publication Date |
---|---|
KR101635763B1 true KR101635763B1 (en) | 2016-07-04 |
Family
ID=56501658
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020150113545A KR101635763B1 (en) | 2015-08-12 | 2015-08-12 | Composite for ultracapacitor electrode, manufacturing method of ultracapacitor electrode using the composite, and ultracapacitor manufactured by the method |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR101635763B1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101860755B1 (en) * | 2016-08-17 | 2018-05-24 | 한국세라믹기술원 | Composite for ultracapacitor electrode, manufacturing method of ultracapacitor electrode using the composite, and ultracapacitor manufactured by the method |
KR20180110335A (en) | 2017-03-29 | 2018-10-10 | 한국세라믹기술원 | Composite for ultracapacitor electrode, manufacturing method of ultracapacitor electrode using the composite, and ultracapacitor manufactured by the method |
KR101936044B1 (en) | 2017-03-09 | 2019-01-08 | 한국세라믹기술원 | Supercapacitor electrode for high temperature, manufactureing method of the electrode, and Supercapacitor for high temperature using the electrode |
KR102188242B1 (en) * | 2019-10-31 | 2020-12-08 | 코칩 주식회사 | Composite for supercapacitor electrode, manufacturing method of supercapacitor electrode using the composite, and supercapacitor manufactured by the method |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100794382B1 (en) * | 2006-07-19 | 2008-01-15 | 한국과학기술원 | Electrode binders and their composition for polymer electrolyte fuel cell, electrode and membrane/electrode assembly comprising said composition and preparation method thereof |
KR101166701B1 (en) * | 2011-03-21 | 2012-07-19 | 비나텍주식회사 | Composite for electrode of supercapacitor, method for manufacturing supercapacitor electrode using the composite, and supercapacitor using the method |
KR101486429B1 (en) | 2013-12-20 | 2015-01-26 | 한국세라믹기술원 | Composite for supercapacitor electrode with low initial resistance, manufacturing method of supercapacitor electrode using the composite and supercapacitor using the supercapacitor electrode manufactured by the method |
-
2015
- 2015-08-12 KR KR1020150113545A patent/KR101635763B1/en active IP Right Grant
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100794382B1 (en) * | 2006-07-19 | 2008-01-15 | 한국과학기술원 | Electrode binders and their composition for polymer electrolyte fuel cell, electrode and membrane/electrode assembly comprising said composition and preparation method thereof |
KR101166701B1 (en) * | 2011-03-21 | 2012-07-19 | 비나텍주식회사 | Composite for electrode of supercapacitor, method for manufacturing supercapacitor electrode using the composite, and supercapacitor using the method |
KR101486429B1 (en) | 2013-12-20 | 2015-01-26 | 한국세라믹기술원 | Composite for supercapacitor electrode with low initial resistance, manufacturing method of supercapacitor electrode using the composite and supercapacitor using the supercapacitor electrode manufactured by the method |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101860755B1 (en) * | 2016-08-17 | 2018-05-24 | 한국세라믹기술원 | Composite for ultracapacitor electrode, manufacturing method of ultracapacitor electrode using the composite, and ultracapacitor manufactured by the method |
KR101936044B1 (en) | 2017-03-09 | 2019-01-08 | 한국세라믹기술원 | Supercapacitor electrode for high temperature, manufactureing method of the electrode, and Supercapacitor for high temperature using the electrode |
KR20180110335A (en) | 2017-03-29 | 2018-10-10 | 한국세라믹기술원 | Composite for ultracapacitor electrode, manufacturing method of ultracapacitor electrode using the composite, and ultracapacitor manufactured by the method |
KR102013173B1 (en) | 2017-03-29 | 2019-08-22 | 한국세라믹기술원 | Composite for ultracapacitor electrode, manufacturing method of ultracapacitor electrode using the composite, and ultracapacitor manufactured by the method |
KR102188242B1 (en) * | 2019-10-31 | 2020-12-08 | 코칩 주식회사 | Composite for supercapacitor electrode, manufacturing method of supercapacitor electrode using the composite, and supercapacitor manufactured by the method |
WO2021085767A1 (en) * | 2019-10-31 | 2021-05-06 | 코칩 주식회사 | Composition for super-capacitor electrode capable of improving electrode density, method for manufacturing super-capacitor electrode using same, and super-capacitor manufactured using manufacturing method |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9048025B2 (en) | Electrode for electric storage device, electric storage device and manufacturing method of electrode for electric storage device | |
KR101486429B1 (en) | Composite for supercapacitor electrode with low initial resistance, manufacturing method of supercapacitor electrode using the composite and supercapacitor using the supercapacitor electrode manufactured by the method | |
KR101793040B1 (en) | Manufacturing method of electrode active material for ultracapacitor, manufacturing method of ultracapacitor electrode using the electrode active material and ultracapacitorusing the electrode active material | |
KR101635763B1 (en) | Composite for ultracapacitor electrode, manufacturing method of ultracapacitor electrode using the composite, and ultracapacitor manufactured by the method | |
KR101166696B1 (en) | Supercapacitor and manufacturing method of the same | |
KR101098240B1 (en) | Manufacturing method of supercapacitor cell | |
KR101059934B1 (en) | Manufacturing method of hybrid supercapacitor | |
KR20190053346A (en) | Supercapacitor having excellent stability for high voltage and method for manufacturing the same | |
KR20130101664A (en) | Supercapacitor electrode and manufacturing method of the same | |
KR101860755B1 (en) | Composite for ultracapacitor electrode, manufacturing method of ultracapacitor electrode using the composite, and ultracapacitor manufactured by the method | |
KR20130006957A (en) | Supercapacitor and manufacturing method of the same | |
KR102013173B1 (en) | Composite for ultracapacitor electrode, manufacturing method of ultracapacitor electrode using the composite, and ultracapacitor manufactured by the method | |
KR101591264B1 (en) | Electrode active material, manufacturing method of the same and manufacturing method of ultra-capacitor electrode | |
KR102188237B1 (en) | Composite for supercapacitor electrode, manufacturing method of supercapacitor electrode using the composite, and supercapacitor manufactured by the method | |
KR102188242B1 (en) | Composite for supercapacitor electrode, manufacturing method of supercapacitor electrode using the composite, and supercapacitor manufactured by the method | |
KR101494622B1 (en) | Composite for supercapacitor electrode and manufacturing method of supercapacitor electrode using the composite | |
JP4997279B2 (en) | Hybrid super capacitor | |
KR102379507B1 (en) | High-density hybrid supercapacitor with phosphorine-based negative electrode and method of manufacturing thereof | |
KR102013179B1 (en) | Manufacturing method of electrode active material for supercapacitor, manufacturing method of supercapacitor electrode and manufacturing method of supercapacitor | |
KR101936044B1 (en) | Supercapacitor electrode for high temperature, manufactureing method of the electrode, and Supercapacitor for high temperature using the electrode | |
KR101493976B1 (en) | Manufacturing method of Asymmetrical Super Capacitor with Cylindrical Type | |
KR101137707B1 (en) | Hybrid supercapacitor cell and manufacturing method of the same | |
KR102172605B1 (en) | Electrolyte of supercapacitor, high voltage supercapacitor and manufacturing method of the high voltage supercapacitor using the electrolyte | |
KR102347581B1 (en) | Electrolyte of supercapacitor, high voltage supercapacitor and manufacturing method of the high voltage supercapacitor using the electrolyte | |
KR102343771B1 (en) | Electrolyte of supercapacitor, high voltage supercapacitor using the same and method of manufacturing thereof |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant | ||
FPAY | Annual fee payment |
Payment date: 20190626 Year of fee payment: 4 |