CN101894680A - Electrode plate for electric double layer capacitor and preparation method of electric double layer capacitor - Google Patents
Electrode plate for electric double layer capacitor and preparation method of electric double layer capacitor Download PDFInfo
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- CN101894680A CN101894680A CN2010102074942A CN201010207494A CN101894680A CN 101894680 A CN101894680 A CN 101894680A CN 2010102074942 A CN2010102074942 A CN 2010102074942A CN 201010207494 A CN201010207494 A CN 201010207494A CN 101894680 A CN101894680 A CN 101894680A
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- 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
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- 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
Abstract
The invention provides an electrode plate for an electric double layer capacitor and a preparation method of the electric double layer capacitor. The preparation method of the electrode plate comprises the following steps: preparing activated carbon fiber cloth; compounding conducting high molecular polymer with the activated carbon fiber cloth to prepare an activated carbon fiber cloth/conducting high molecular polymer combined electrode, wherein the conducting high molecular polymer is poly(3,4-ethylenedioxythiophene), polyaniline or polypyrrole; washing the combined electrode in de-ionized water to remove excess foreign ions on the combined electrode; and drying the combined electrode the foreign ions of which are removed to prepare the electrode plate. The invention increases the bonding area of the conducting high molecular polymer and activated carbon fibers, enhances the contact performance among the activated carbon fibers and between the activated carbon fiber cloth and a collector electrode, reduces the mass ratio of the conducting high molecular polymer to the combined electrode, increases the energy density of the electric double layer capacitor and greatly lowers the equipment requirement and manufacturing cost.
Description
Technical field
The present invention relates to a kind of double electric layer capacitor, relate in particular to a kind of double electric layer capacitor preparation method of electrode slice and the electric double-layer capacitors prepared method that adopts the kind electrode sheet.
Background technology
Ultracapacitor is based on the energy-storage travelling wave tube of the electrochemical process of electrode/solution interface, the migration that the Charge Storage of ultracapacitor occurs on the electric double layer that electrode, electrolyte form and carries out the electric charge that underpotential deposition, electrochemistry absorption, desorption and redox produce at electrode surface.Its capacity is 20～200 times of traditional capacitor, can reach farad level even thousand farads of levels, specific power is more than 10 times of battery, it has the big and high advantage of rechargeable battery energy density of conventional capacitor power density concurrently, and have that the speed of discharging and recharging is fast, environmentally safe, the characteristics such as temperature limit wide ranges that have extended cycle life, use, be a kind of practicality, novel energy efficiently.Because its flash-over characteristic and electrostatic condenser are more approaching, so still be referred to as " electric capacity ".Ultracapacitor has been filled up the blank between battery and the traditional physics electric capacity, is a kind of novel energy-storing element between conventional electrostatic capacitor and chemical power source.This capacitor is a kind of new green power that has hope this century most.With its big capacity, high-energy-density, big electric current such as repeatedly discharges and recharges at performance, makes it obtain more and more widely application in fields such as industry, consumer electronics, telecom communication, medicine equipment, national defence, Aero-Space.According to discharge capacity, discharge time and capacitance size, mainly as back-up source, replacement power supply and main power source.
According to energy storage mechanism, ultracapacitor can be divided into double electric layer capacitor and pseudo capacitance device two big classes.Double electric layer capacitor is to be based upon on the electric double layer theoretical foundation.During charging, electrolyte dissociates, and zwitterion forms electric double layer respectively towards both positive and negative polarity motion and be adsorbed on electrode surface, and Charge Storage is in electric double layer.During discharge, charge neutrality to anodal, has taken place with the cation of positive pole by outer load movement in electronics, and desorb has taken place the zwitterion of electrode surface simultaneously, comes back in the bulk of the electrolyte.Active carbon fiber fabrics that the present invention relates to and conducting high polymers thing composite two-layer capacitor are exactly a kind of of ultracapacitor.
Double electric layer capacitor adopts raw material of wood-charcoal material such as activated carbon powder, carbon nanotube, charcoal-aero gel, carbon fiber sheet as electrode material more at present.Use carbon fiber sheet to have as electrode material that technology is simple, cost is low, the electrical property excellent characteristics.But how improving between the charcoal filament of forming carbon fiber sheet and the contact between carbon fiber sheet and the collector electrode, is key issue thereby reduce internal resistance.
U.S. Pat 4 in Granted publication on the 31st December in 1985,562,511 disclose a kind of double electric layer capacitor, wherein, in order to improve contact between electrode slice and the collector electrode, to reduce internal resistance then, proposed to adopt the method for thermal spraying metal, but do not set forth specific implementation in more detail.
U.S. Pat 6 in Granted publication on the 6th August in 2002,430,031B1 discloses a kind of double electric layer capacitor, wherein, in order to improve between the charcoal filament and the contact between carbon fiber sheet and the collector electrode and reduce the internal resistance of double electric layer capacitor, adopt the one side composite layer of aluminum of the method for plasma spraying in activated carbon fiber, wherein the clad aluminum quality accounts for the 42-53% of combination electrode.
Open CN1549287A discloses a kind of active carbon fiber fabrics/spraying compound polar plate double electric layer capacitor and preparation method thereof in disclosed Chinese patent application on November 24th, 2004, wherein adopt the method for electric arc spraying high-purity aluminium wire fusion to be ejected into the surface of active carbon fiber fabrics, after compound, aluminum portions infiltrates activated carbon fiber inside, form the conducting matrix grain network configuration, thereby improve between the charcoal filament and the contact between carbon fiber sheet and the collector electrode, greatly reduce the internal resistance of double electric layer capacitor, wherein the clad aluminum quality accounts for the 15-30% of combination electrode.
Because in above-mentioned technology, sandblast aluminium dust needs the elevated temperature heat spraying equipment, and equipment requirements height, control are complicated, and then causes making the cost height of electrode slice.In addition, also having the space of more improving between the activated carbon fiber silk and on the contact between active carbon fiber fabrics and the collector electrode.In addition,, the double electric layer capacitor capacity is not had contribution because aluminium only plays electric action, thus the aluminium that above-mentioned technology obtained/combination electrode mass ratio still than higher, thereby influenced the energy density of double electric layer capacitor to a certain extent.
Summary of the invention
At existing above-mentioned deficiency in the prior art, the object of the present invention is to provide a kind of double electric layer capacitor with electrode slice and electric double-layer capacitors prepared method, it can reduce equipment requirements, improve between the activated carbon fiber silk and the contact between active carbon fiber fabrics and the collector electrode, improve the energy density of double electric layer capacitor.
At purpose of the present invention, aspect first, the invention provides the preparation method of a kind of double electric layer capacitor of the present invention with electrode slice, comprise step: the preparation active carbon fiber fabrics, so that described active carbon fiber fabrics has 1000m
2/ g-2000m
2/ g specific area, 0.5mm-1mm thickness, 100g/m
2-200g/m
2Surface density; Conducting high polymers thing and active carbon fiber fabrics is compound, and described conducting high polymers thing is for gathering 3, and any one in 4-enedioxy thiophene, polyaniline, the polypyrrole is to make the combination electrode of active carbon fiber fabrics and conducting high polymers thing; Combination electrode is put into deionized water wash, remove the redundant impurities ion on the combination electrode; And with the oven dry of the combination electrode of decontamination ion, to make electrode slice.
With among the preparation method of electrode slice, preferably, described active carbon fiber fabrics specific area is 1500m at described double electric layer capacitor
2/ g, thickness are 0.8mm.
With among the preparation method of electrode slice, the described step that conducting high polymers thing and carbon fiber sheet is compound can be at described double electric layer capacitor: with the solution of conducting high polymers thing monomer and dopant and oxidizing agent solution by spraying or brushing and be coated on the active carbon fiber fabrics respectively; Wherein, described conducting high polymers thing monomer is 3, a kind of among 4-enedioxy thiophene, aniline, the pyrroles etc., described dopant is a kind of in DBSA, polystyrolsulfon acid, camphorsulfonic acid, the p-methyl benzenesulfonic acid iron etc., and solvent is a kind of in the organic solvents such as water or butanols, acetone, ether; Oxidant in the described oxidizing agent solution is a kind of in p-methyl benzenesulfonic acid iron, sodium peroxydisulfate, the ammonium persulfate etc., and the solvent in the described oxidizing agent solution is a kind of in the organic solvents such as water or butanols, acetone, ether.
With among the preparation method of electrode slice, selectively, in the solution of described conducting high polymers thing monomer and dopant, conducting high polymers thing monomer is 3 at described double electric layer capacitor, and 4-enedioxy thiophene, solvent are butanols, and concentration is 40%; In described oxidizing agent solution, oxidant is a p-methyl benzenesulfonic acid iron, and solvent is a butanols, and concentration is 40%; In the step that conducting high polymers thing and active carbon fiber fabrics is compound, also can comprise step: active carbon fiber fabrics is carried out heating, drying, heating-up temperature is 50 ℃, and described conducting high polymers thing monomer polymerization becomes the conducting high polymers thing, and makes unnecessary solvent evaporates.
Use among the preparation method of electrode slice at described double electric layer capacitor, selectively, in the solution of described conducting high polymers thing monomer and dopant, described conducting high polymers thing monomer is an aniline, solvent is a water, and concentration is 10%, and dopant is a polystyrolsulfon acid; In described oxidizing agent solution, oxidant is an ammonium persulfate, and solvent is a water, and concentration is 20%; In the described step that conducting high polymers thing and active carbon fiber fabrics is compound, aniline monomer carries out polymerization on the active carbon fiber fabrics surface under normal temperature.
Use among the preparation method of electrode slice at described double electric layer capacitor, selectively, in the solution of described conducting high polymers thing monomer and dopant, described conducting high polymers thing monomer is the pyrroles, solvent is a water, and concentration is 2%, and dopant is a DBSA; In described oxidizing agent solution, oxidant is an ammonium persulfate, and solvent is a water, and concentration is 10%; In the described step that conducting high polymers thing and active carbon fiber fabrics is compound, pyrrole monomer carries out polymerization on the active carbon fiber fabrics surface under normal temperature.
Use among the preparation method of electrode slice at described double electric layer capacitor, alternately, the compound step of described conducting high polymers thing and active carbon fiber fabrics can be: conducting high polymers thing dispersion liquid is sprayed or brushes on activated carbon fiber, and active carbon fiber fabrics carried out heating, drying, so that the solvent evaporates of conducting high polymers thing dispersion liquid.
Use among the preparation method of electrode slice at described double electric layer capacitor, preferably, in the compound step of described conducting high polymers thing and active carbon fiber fabrics, described conducting high polymers thing dispersion liquid is 5% polyaniline water dispersion liquid, and described heating, drying is that 120 ℃ of temperature, time are 10 minutes.
Use among the preparation method of electrode slice at described double electric layer capacitor, in the described step that conducting high polymers thing and active carbon fiber fabrics is compound, preferably, the thickness of described conducting high polymers thing just reaches on the surface of described active carbon fiber fabrics and forms continuous conducting high polymers object plane, and the quality of the shared combination electrode sheet of described conducting high polymers thing is 5-10%.
With among the preparation method of electrode slice, in the described step that the combination electrode of decontamination ion is dried, the temperature of described oven dry is preferably 120 ℃ at described double electric layer capacitor.
At purpose of the present invention, aspect second of the present invention, the invention provides a kind of electric double-layer capacitors prepared method, comprise step: the preparation electrode slice, adopt aforementioned double electric layer capacitor to prepare with the preparation method of electrode slice; Stack in order by diaphragm paper, collector, electrode slice, diaphragm paper, electrode slice, collector, and be wound into capacitor body; Described capacitor body vacuumize is dewatered; Under dry atmosphere, take out and vacuum impregnation electrolyte; The capacitor body that is soaked with electrolyte is put into aluminum hull; And the roll extrusion top cover labyrinth, be encapsulated into finished product.
Beneficial effect of the present invention is as follows:
(1) in the present invention, owing to adopted conducting high polymers thing and active carbon fiber fabrics complex technique, so no longer need elevated temperature heat spraying equipment of the prior art, thereby greatly reduced equipment requirements, and then reduced the manufacturing cost of double electric layer capacitor with electrode slice.
(2) in the present invention, owing to adopted conducting high polymers thing and active carbon fiber fabrics complex technique, the conducting high polymers thing enters active carbon fiber fabrics inside, the bonded area of conducting high polymers thing and activated carbon fiber is much larger than the resulting bonded area of thermal spraying aluminium powder of the prior art, thereby improved between the activated carbon fiber silk and the contact between active carbon fiber fabrics and the collector electrode.
(3) in the present invention, compared with prior art, the conducting high polymers thing/combination electrode mass ratio that is obtained is low, thereby has improved the energy density of double electric layer capacitor.
Embodiment
Specify the preparation method of double electric layer capacitor of the present invention below with electrode slice.
Double electric layer capacitor of the present invention comprises step: prepare active carbon fiber fabrics, so that described active carbon fiber fabrics has 1000m with the preparation method of electrode slice
2/ g-2000m
2/ g specific area, 0.5mm-1mm thickness, 100g/m
2-200g/m
2Surface density; Conducting high polymers thing and active carbon fiber fabrics is compound, and described conducting high polymers thing is for gathering 3, and any one in 4-enedioxy thiophene, polyaniline, the polypyrrole is to make the combination electrode of active carbon fiber fabrics and conducting high polymers thing; Combination electrode is put into deionized water wash, remove the redundant impurities ion on the combination electrode; And with the oven dry of the combination electrode of decontamination ion, to make electrode slice.
With among the preparation method of electrode slice, preferably, described active carbon fiber fabrics specific area is 1500m at described double electric layer capacitor
2/ g, thickness are 0.8mm.
With among the preparation method of electrode slice, the described step that conducting high polymers thing and carbon fiber sheet is compound can be at described double electric layer capacitor: with the solution of conducting high polymers thing monomer and dopant and oxidizing agent solution by spraying or brushing and be coated on the active carbon fiber fabrics respectively; Wherein, described conducting high polymers thing monomer is 3, a kind of among 4-enedioxy thiophene, aniline, the pyrroles etc., described dopant is a kind of in DBSA, polystyrolsulfon acid, camphorsulfonic acid, the p-methyl benzenesulfonic acid iron etc., and solvent is a kind of in the organic solvents such as water or butanols, acetone, ether; Oxidant in the described oxidizing agent solution is a kind of in p-methyl benzenesulfonic acid iron, sodium peroxydisulfate, the ammonium persulfate etc., and the solvent in the described oxidizing agent solution is a kind of in the organic solvents such as water or butanols, acetone, ether.
Use among the preparation method of electrode slice at described double electric layer capacitor, the described step that conducting high polymers thing and carbon fiber sheet is compound also can be: with the spraying of conducting high polymers thing dispersion liquid or brush on activated carbon fiber, and active carbon fiber fabrics carried out heating, drying, so that the solvent evaporates of conducting high polymers thing dispersion liquid.
When conducting high polymers thing monomer is 3, during 4-enedioxy thiophene, in the step that conducting high polymers thing and active carbon fiber fabrics is compound, also can comprise step: active carbon fiber fabrics is carried out heating, drying, described conducting high polymers thing monomer polymerization becomes the conducting high polymers thing, and makes unnecessary solvent evaporates.
Use among the preparation method of electrode slice at described double electric layer capacitor, in the described step that conducting high polymers thing and active carbon fiber fabrics is compound, preferably, the thickness of described conducting high polymers thing just reaches on the surface of described active carbon fiber fabrics and forms continuous conducting high polymers object plane, and the quality of the shared combination electrode sheet of described conducting high polymers thing is 5-10%.
With among the preparation method of electrode slice, in the described step that the combination electrode of decontamination ion is dried, the temperature of described oven dry is preferably 120 ℃ at described double electric layer capacitor.
Specify electric double-layer capacitors prepared method of the present invention below.
Electric double-layer capacitors prepared method of the present invention comprises step: preparation double electric layer capacitor electrode slice, adopt aforementioned double electric layer capacitor to prepare with the preparation method of electrode slice; Stack in order by diaphragm paper, collector, electrode slice, diaphragm paper, electrode slice, collector, and be wound into capacitor body; Described capacitor body vacuumize is dewatered; Under dry atmosphere, take out and vacuum impregnation electrolyte; The capacitor body that is soaked with electrolyte is put into aluminum hull; And the roll extrusion top cover labyrinth, be encapsulated into finished product.
Provide the electric double-layer capacitors prepared example of the above-mentioned combination electrode sheet of several employings below.
Embodiment 1: active carbon fiber fabrics of the present invention and conducting high polymers thing composite two-layer capacitor
Manufacture method:
Step 1: with 3,4-enedioxy thiophene is a conducting high polymers thing monomer, with the butanols is solvent preparation conducting high polymers thing monomer solution, solution concentration is 40%, with p-methyl benzenesulfonic acid iron is oxidant, with the butanols is solvent preparation oxidizing agent solution, and solution concentration is 40%, and wherein p-methyl benzenesulfonic acid iron is not only as oxidant but also as dopant.The mode that adopts pneumatic spraying is with 3, and 4-enedioxy thiophene butanol solution and p-methyl benzenesulfonic acid iron butanol solution spray to a surface of active carbon fiber fabrics respectively, and 50 ℃ of heating make monomer in the polymerization fully of active carbon fiber fabrics surface.
Step 2: put into deionized water and wash, remove foreign ions such as unnecessary iron ion, copper ion, chloride ion, 120 ℃ of oven dry.The thickness of spraying conducting high polymers thing reaches the surface and just forms continuous conducting high polymers object plane.After conducting high polymers thing and active carbon fiber fabrics are compound, conducting polymer infiltrates the inner certain depth of active carbon fiber fabrics, fully contact with the small charcoal filament surface that constitutes active carbon fiber fabrics, in the conductive network structure in active carbon fiber fabrics surface and inner formation, the quality of the shared combination electrode sheet of conducting high polymers thing is 10%.
Step 3: as collector, barrier film adopts papery double electric layer capacitor diaphragm paper with aluminium foil riveted joint guide pin, and diaphragm paper, collector, electrode slice, diaphragm paper, electrode slice, collector stack in order, are wound into capacitor body on up-coiler.
Step 4: capacitor body vacuumize is dewatered 150 ℃ of temperature, 14 hours time.Take out and the vacuum impregnation organic electrolyte under dry atmosphere, electrolyte is the carbonic allyl ester solution of the tetraethyl ammonium tetrafluoroborate of 1mol/L.Fuse after the impregnation is put into aluminum hull roll extrusion top cover labyrinth, is encapsulated into finished product.
Embodiment 2: active carbon fiber fabrics of the present invention and conducting high polymers thing composite two-layer capacitor
The preparation method:
Step 1: with aniline is conducting high polymers thing monomer, is solvent preparation conducting high polymers thing monomer solution with water, and solution concentration is 10%, and adds polystyrolsulfon acid as dopant.With the ammonium persulfate is oxidant, is solvent preparation oxidizing agent solution with water, and solution concentration is 20%.
Step 2: adopt the mode of pneumatic spraying to add the aniline solution of styrene sulfonic acid and the surface that ammonium persulfate solution sprays to active carbon fiber fabrics respectively, normal temperature is placed down, makes conducting high polymers thing monomer in the polymerization fully of active carbon fiber fabrics surface.Put into deionized water and wash, remove the redundant impurities ion, 120 ℃ of oven dry.The thickness of spraying conducting high polymers thing reaches the surface and just forms continuous conducting high polymers object plane.After conducting high polymers thing and active carbon fiber fabrics are compound, the conducting high polymers thing infiltrates the inner certain depth of active carbon fiber fabrics, fully contact with the small charcoal filament surface that constitutes active carbon fiber fabrics, in the conductive network structure in active carbon fiber fabrics surface and inner formation, the quality of the shared combination electrode sheet of conducting high polymers thing is 8%.
Step 3: as collector, barrier film adopts papery double electric layer capacitor diaphragm paper with aluminium foil riveted joint guide pin, and diaphragm paper, collector, electrode slice, diaphragm paper, electrode slice, collector stack in order, are wound into capacitor body on up-coiler.
Step 4: capacitor body vacuumize is dewatered 150 ℃ of temperature, 14 hours time.Take out and the vacuum impregnation organic electrolyte under dry atmosphere, electrolyte is the carbonic allyl ester solution of the methyltriethylammonitetrafluoroborate tetrafluoroborate of 1.5mol/L.Fuse after the impregnation is put into aluminum hull roll extrusion top cover labyrinth, is encapsulated into finished product.
Embodiment 3: active carbon fiber fabrics of the present invention and conducting high polymers thing composite two-layer capacitor
The preparation method:
Step 1: with pyrroles is conducting high polymers thing monomer, is solvent preparation conducting high polymers thing monomer solution with water, and solution concentration is 2%, and adds an amount of DBSA as dopant.With the ammonium persulfate is oxidant, is solvent preparation oxidizing agent solution with water, and solution concentration is 10%.
Step 2: adopt the mode of pneumatic spraying to add pyrroles's solution of DBSA and the surface that ammonium persulfate aqueous solution sprays to active carbon fiber fabrics respectively, normal temperature is placed down, makes monomer in the polymerization fully of active carbon fiber fabrics surface.Put into deionized water and wash, remove the redundant impurities ion, 120 ℃ of oven dry.The thickness of spraying conducting high polymers thing reaches the surface and just forms continuous conducting high polymers object plane.After conducting high polymers thing and active carbon fiber fabrics are compound, the conducting high polymers thing infiltrates the inner certain depth of active carbon fiber fabrics, fully contact with the small charcoal filament surface that constitutes active carbon fiber fabrics, in the conductive network structure in active carbon fiber fabrics surface and inner formation, the quality of the shared combination electrode sheet of conducting high polymers thing is 5%.
Step 3: as collector, barrier film adopts papery double electric layer capacitor diaphragm paper with aluminium foil riveted joint guide pin, and diaphragm paper, collector, electrode slice, diaphragm paper, electrode slice, collector stack in order, are wound into capacitor body on up-coiler.
Step 4: capacitor body vacuumize is dewatered 150 ℃ of temperature, 14 hours time.Take out and the vacuum impregnation organic electrolyte under dry atmosphere, electrolyte is the acetonitrile solution of the tetraethyl ammonium tetrafluoroborate of 1mol/L.Fuse after the impregnation is put into aluminum hull roll extrusion top cover labyrinth, is encapsulated into finished product.
Embodiment 4: active carbon fiber fabrics of the present invention and conducting high polymers thing composite two-layer capacitor
Manufacture method:
Step 1: the mode that adopts pneumatic spraying sprays to a surface of active carbon fiber fabrics with 5% polyaniline water dispersion liquid, and 120 ℃ of heating 10 minutes make the water volatilization, and polyaniline and active carbon fiber fabrics surface are compound fully.
Step 2: put into deionized water and wash, remove the redundant impurities ion, 120 ℃ of oven dry.The thickness of spraying conducting high polymers thing reaches the surface and just forms continuous conducting high polymers object plane.After conducting high polymers thing and active carbon fiber fabrics are compound, the conducting high polymers thing infiltrates the inner certain depth of active carbon fiber fabrics, fully contact with the small charcoal filament surface that constitutes active carbon fiber fabrics, in the conductive network structure in active carbon fiber fabrics surface and inner formation, the quality of the shared combination electrode sheet of conducting high polymers thing is 10%.
Step 3: as collector, barrier film adopts papery double electric layer capacitor diaphragm paper with aluminium foil riveted joint guide pin, and diaphragm paper, collector, electrode slice, diaphragm paper, electrode slice, collector stack in order, are wound into capacitor body on up-coiler.
Step 4: capacitor body vacuumize is dewatered 150 ℃ of temperature, 14 hours time.Take out and the vacuum impregnation organic electrolyte under dry atmosphere, electrolyte is the carbonic allyl ester solution of the tetraethyl ammonium tetrafluoroborate of 1.5mol/L.Fuse after the impregnation is put into aluminum hull roll extrusion top cover labyrinth, is encapsulated into finished product.
Although for understand clear for the purpose of, aspect some details the present invention is being described by the foregoing description, it should be understood that above-mentioned explanation should not be considered as limiting the scope of the invention.And, it is evident that for the ordinary skill in the art, under the situation of technical conceive that does not break away from claim and scope, can make variously substituting, revising or being equal to the present invention, and claim of the present invention will cover these and substitute, revises or be equal to.
Claims (10)
1. a double electric layer capacitor comprises step with the preparation method of electrode slice:
The preparation active carbon fiber fabrics is so that described active carbon fiber fabrics has 1000m
2/ g-2000m
2/ g specific area, 0.5mm-1mm thickness, 100g/m
2-200g/m
2Surface density;
Conducting high polymers thing and active carbon fiber fabrics is compound, and described conducting high polymers thing is for gathering 3, and any one in 4-enedioxy thiophene, polyaniline, the polypyrrole is to make the combination electrode of active carbon fiber fabrics and conducting high polymers thing;
Combination electrode is put into deionized water wash, remove the redundant impurities ion on the combination electrode; And
With the combination electrode oven dry of decontamination ion, to make the double electric layer capacitor electrode slice.
2. the double electric layer capacitor as claimed in claim 1 preparation method of electrode slice, it is characterized in that the described step that conducting high polymers thing and carbon fiber sheet is compound is: with the solution of conducting high polymers thing monomer and dopant and oxidizing agent solution by spraying or brush and be coated on the active carbon fiber fabrics respectively; Wherein, described conducting high polymers thing monomer is 3, a kind of among 4-enedioxy thiophene, aniline, the pyrroles etc., described dopant is a kind of in DBSA, polystyrolsulfon acid, camphorsulfonic acid, the p-methyl benzenesulfonic acid iron etc., and solvent is a kind of in the organic solvents such as water or butanols, acetone, ether; Oxidant in the described oxidizing agent solution is a kind of in p-methyl benzenesulfonic acid iron, sodium peroxydisulfate, the ammonium persulfate etc., and the solvent in the described oxidizing agent solution is a kind of in the organic solvents such as water or butanols, acetone, ether.
3. double electric layer capacitor as claimed in claim 2 is characterized in that, in the solution of described conducting high polymers thing monomer and dopant with the preparation method of electrode slice, conducting high polymers thing monomer is 3,4-enedioxy thiophene, solvent are butanols, and concentration is 40%; In described oxidizing agent solution, oxidant is a p-methyl benzenesulfonic acid iron, and solvent is a butanols, and concentration is 40%; In the step that conducting high polymers thing and active carbon fiber fabrics is compound, also comprise step: active carbon fiber fabrics is carried out heating, drying, heating-up temperature is 50 ℃, and described conducting high polymers thing monomer polymerization becomes the conducting high polymers thing, and makes unnecessary solvent evaporates.
4. double electric layer capacitor as claimed in claim 2 is characterized in that, in the solution of described conducting high polymers thing monomer and dopant with the preparation method of electrode slice, described conducting high polymers thing monomer is an aniline, solvent is a water, and concentration is 10%, and dopant is a polystyrolsulfon acid; In described oxidizing agent solution, oxidant is an ammonium persulfate, and solvent is a water, and concentration is 20%; In the described step that conducting high polymers thing and active carbon fiber fabrics is compound, aniline monomer carries out polymerization on the active carbon fiber fabrics surface under normal temperature.
5. double electric layer capacitor as claimed in claim 2 is characterized in that, in the solution of described conducting high polymers thing monomer and dopant with the preparation method of electrode slice, described conducting high polymers thing monomer is the pyrroles, solvent is a water, and concentration is 2%, and dopant is a DBSA; In described oxidizing agent solution, oxidant is an ammonium persulfate, and solvent is a water, and concentration is 10%; In the described step that conducting high polymers thing and active carbon fiber fabrics is compound, pyrrole monomer carries out polymerization on the active carbon fiber fabrics surface under normal temperature.
6. the double electric layer capacitor as claimed in claim 1 preparation method of electrode slice, it is characterized in that, the compound step of described conducting high polymers thing and active carbon fiber fabrics is: conducting high polymers thing dispersion liquid is sprayed or brushes on activated carbon fiber, and active carbon fiber fabrics carried out heating, drying, so that the solvent evaporates of conducting high polymers thing dispersion liquid.
7. the double electric layer capacitor as claimed in claim 6 preparation method of electrode slice, it is characterized in that, in the compound step of described conducting high polymers thing and active carbon fiber fabrics, described conducting high polymers thing dispersion liquid is 5% polyaniline water dispersion liquid, and described heating, drying is that 120 ℃ of temperature, time are 10 minutes.
8. the double electric layer capacitor as claimed in claim 1 preparation method of electrode slice, it is characterized in that, in the described step that conducting high polymers thing and active carbon fiber fabrics is compound, the thickness of described conducting high polymers thing just reaches on the surface of described active carbon fiber fabrics and forms continuous conducting high polymers object plane, and the quality of the shared combination electrode sheet of described conducting high polymers thing is 5-10%.
9. double electric layer capacitor as claimed in claim 1 is characterized in that with the preparation method of electrode slice in the described step that the combination electrode of decontamination ion is dried, the temperature of described oven dry is 120 ℃.
10. electric double-layer capacitors prepared method comprises step:
The preparation electrode slice prepares by each described preparation method among the claim 1-9;
Stack in order by diaphragm paper, collector, electrode slice, diaphragm paper, electrode slice, collector, and be wound into capacitor body;
Described capacitor body vacuumize is dewatered;
Under dry atmosphere, take out and vacuum impregnation electrolyte;
The capacitor body that is soaked with electrolyte is put into aluminum hull; And
The roll extrusion top cover labyrinth is encapsulated into finished product.
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| CN102073428A (en) * | 2011-01-07 | 2011-05-25 | 中国科学院苏州纳米技术与纳米仿生研究所 | Capacitance type flexible and transparent touch screen based on CNT film |
| CN102737851A (en) * | 2011-04-15 | 2012-10-17 | 国家纳米科学中心 | Flexible supercapacitor and preparation method thereof |
| CN102924919A (en) * | 2012-10-25 | 2013-02-13 | 无锡市三力胶带厂 | Conductive polymer material |
| CN103730266A (en) * | 2013-12-27 | 2014-04-16 | 电子科技大学 | Method for manufacturing electrochemical capacitor combined electrode |
| CN105244182A (en) * | 2015-09-29 | 2016-01-13 | 重庆大学 | Preparation method of capacitor electrode material beta-NiMoO4 and super capacitor |
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| CN101252043A (en) * | 2007-04-25 | 2008-08-27 | 北京理工大学 | Pre-embedding method of lithium ion super capacitor cathode |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102073428A (en) * | 2011-01-07 | 2011-05-25 | 中国科学院苏州纳米技术与纳米仿生研究所 | Capacitance type flexible and transparent touch screen based on CNT film |
| CN102073428B (en) * | 2011-01-07 | 2013-02-13 | 中国科学院苏州纳米技术与纳米仿生研究所 | Capacitance type flexible and transparent touch screen based on CNT film |
| CN102737851A (en) * | 2011-04-15 | 2012-10-17 | 国家纳米科学中心 | Flexible supercapacitor and preparation method thereof |
| CN102737851B (en) * | 2011-04-15 | 2015-08-26 | 国家纳米科学中心 | A kind of flexible super capacitor and preparation method thereof |
| CN102924919A (en) * | 2012-10-25 | 2013-02-13 | 无锡市三力胶带厂 | Conductive polymer material |
| CN103730266A (en) * | 2013-12-27 | 2014-04-16 | 电子科技大学 | Method for manufacturing electrochemical capacitor combined electrode |
| CN105244182A (en) * | 2015-09-29 | 2016-01-13 | 重庆大学 | Preparation method of capacitor electrode material beta-NiMoO4 and super capacitor |
| CN105244182B (en) * | 2015-09-29 | 2019-02-15 | 重庆大学 | Capacitor electrode material β-NiMoO4Preparation method and supercapacitor |
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| CN101894680B (en) | 2012-08-29 |
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