CN100372034C - Formula for making solid electrolytic capacitor and process for making thereof - Google Patents
Formula for making solid electrolytic capacitor and process for making thereof Download PDFInfo
- Publication number
- CN100372034C CN100372034C CNB031026362A CN03102636A CN100372034C CN 100372034 C CN100372034 C CN 100372034C CN B031026362 A CNB031026362 A CN B031026362A CN 03102636 A CN03102636 A CN 03102636A CN 100372034 C CN100372034 C CN 100372034C
- Authority
- CN
- China
- Prior art keywords
- solid electrolytic
- electrolytic capacitor
- oxidant
- capacitor
- electroconductive polymer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Polyoxymethylene Polymers And Polymers With Carbon-To-Carbon Bonds (AREA)
Abstract
The present invention relates to a formula for manufacturing a solid electrolytic capacitor and a making method thereof. The formula comprises a macromolecule monomer with electric conductivity, a dopant and an oxidant solution with high concentration, wherein the oxidant solution is prepared by an oxidant, a solvent and a polymerization retardant of a five-membered ring or a six-membered ring with a functional group which is discloses in the specification. The making method comprises the steps that a capacitor prime is immersed into the oxidant solution with high concentration, and a mixed solution composed of the oxidant solution and the macromolecule monomer with electric conductivity has room temperature stability and can cause the capacitor prime to obtain a macromolecule electrolyte with sufficient thickness after the capacitor prime is immersed into the mixed solution by a few times, and polymerization is carried out to the capacitor prime so as to reach the characteristics of simplifying making method and obtaining excellent capacitors.
Description
Technical field
The present invention relates to a kind of electrolytical prescription of electroconductive polymer and this electrolytical manufacture method of capacitor element soaking of making solid electrolytic capacitor, particularly adding in the oxidizing agent solution of high concentration is a kind ofly to have
The polymerization reaction delayer of functional group's five-membered ring or hexatomic ring is made prescription of solid electrolytic capacitor and preparation method thereof.
Background technology
For a long time, a major subjects of electrolytic capacitor development is in order to improve electrolytical electrical conductivity, to reduce the equivalent series resistance of capacitor, to reach the characteristic of low impedance at high frequency and tool high-reliability.Because liquid electrolyte or the wrong salt of solid-state organic semiconductor that electroconductive polymer is used than the traditional electrical electrolysis condenser, as tcnq complex salt, higher electrical conductivity is arranged, and the high-temperature insulation characteristic with appropriateness, so electroconductive polymer becomes the employed electrolytical exploitation trend of electrolytic capacitor now.
Gerhard Hellwing, people such as Stegen at first disclose with chemical oxidative polymerization the electrolyte of electroconductive polymer as capacitor for No. 4803596 at United States Patent (USP).Its method is with behind positive paper tinsel difference impregnation electroconductive polymer monomer of capacitor and the oxidizing agent solution, makes the electroconductive polymer monomer polymerization under proper condition, and so repeated multiple times is to accumulate the electrolytical thickness of enough electroconductive polymers.Because the electroconductive polymer monomer of this method and oxidant fully do not mix, therefore reactive uneven, and after positive paper tinsel micropore was attached by a liquid, another liquid was difficult among the infiltration into microporous, so can't obtain the electroconductive polymer of abundant reactive polymeric in the micropore of positive paper tinsel.And when capacitor sub-prime or cathode foil in the impregnation process that oxidizing agent solution and two kinds of liquid of monomer interlock repeatedly, monomer and oxidizing agent solution can be mixed with each other and pollute.
Based on above-mentioned shortcoming, the electrolytical method of electroconductive polymer of making solid electrolytic capacitor with chemical oxidative polymerization is after monomer, dopant, oxidant and the solvent with electroconductive polymer, with this mixed solution of capacitor element soaking.Monomer carries out polymerization reaction and forms electroconductive polymer under the effect of oxidant in sub-prime at this moment.Because being the chemical oxidising polymerisation reaction that is taken place by electroconductive polymer monomer and oxidant, electroconductive polymer generates, therefore in case the electroconductive polymer monomer is with after oxidant mixes, if do not delay the carrying out of chemical reaction in advance, just polymerization reaction take place at once, cause the viscosity of mixed liquor to rise, make mixed liquor can't infiltrate in the hole of capacitor sub-prime.In addition, because oxidant is generally solid, need be dissolved in the solvent and can uses.Moreover the impregnation speed of capacitor element soaking monomer and oxidant mixed solution is relevant with the viscosity of mixed liquor.The mixed liquor solvent is fewer, and its viscosity is higher, and the speed of capacitor element soaking mixed liquor also will heal slowly.In addition, if it is higher to contain the concentration of monomer in the immersion liquid and oxidant, rate of polymerization is faster, more will shorten sub-prime impregnation time of energy impregnation mixed liquor.Therefore for the ambient-temp-stable degree of the mixed liquor that improves monomer and oxidant, people such as FriedrichJonas disclose in United States Patent (USP) 4910645, use a large amount of solvent dilution electroconductive polymer monomers, make monomer concentration be lower than 10wt%, to reduce the room temperature reaction speed of monomer and oxidant mixed solution.The mixed solution of sub-prime impregnation electroconductive polymer monomer and oxidant as a result, can only obtain a spot of electroconductive polymer through after the polymerization, remaining part then is that remaining reactant is occupied with a large amount of solvents, need can produce enough electroconductive polymers and fills up space between the positive and negative paper tinsel of capacitor sub-prime (as No. the 6136176th, United States Patent (USP)) through reaching 16 times impregnation and polymerization so plant processing procedure.Therefore it is complicated to have processing procedure with electroconductive polymer as the electrolyte of solid electrolytic capacitor, the shortcoming that manufacturing cost is high.
People such as Philip M.Lessner are at United States Patent (USP) 6,056, disclose for No. 899, to contain the specific low boiling organic compound of oxygen atom, as oxolane, mix formation misfit thing with ferric oxidant, reduce the oxidizing force of oxidant, the mixed liquor that electroconductive polymer monomer and oxidant are formed can be stablized preservation for a long time.After treating capacitor element soaking mixed liquor, drive away this low boiling point solvent, impel oxidant to cause the polymerization reaction of electroconductive polymer in hot environment.Because this patent discloses the compound that contains oxygen atom, as the polymerization delayer, the ability that forms the misfit thing with ferric oxidant is faint as oxolane, needs to use a large amount of these type of materials can manifest the effect that this type of material is stablized mixed liquor.This patent shows the material that has strong misfit ability with iron simultaneously, as pyridine (pyridine), can cause the oxidizing force that contains ferroxidant to decline to a great extent and can only to obtain the degree of polymerization extremely low and do not have an oligomerization of electrical conductivity and close electroconductive polymer, can't be as the electrolyte of capacitor.Therefore, the polymerization delayer that contains oxygen atom that the disclosed misfit ability of this patent is faint, though can make electroconductive polymer monomer and oxidant mixture formula have the electroconductive polymer that room temperature stability also can obtain to go deep into capacitor sub-prime micropore, but the result of a large amount of polymerization delayer dilution electroconductive polymer monomers and oxidant mixed liquor makes the capacitor sub-prime still need impregnation repeatedly, the electroconductive polymer that polymerization can obtain adequate thickness, the processing procedure that can't improve the electroconductive polymer solid electrolytic capacitor is complicated, the shortcoming that manufacturing cost is high.
Therefore, how to propose a kind of impregnation and the processing procedure number of times of polymerization that solid electrolytic capacitor is made polyelectrolyte that reduce, but can reach the manufacturing method thereof of same thickness polyelectrolyte and splendid capacitor specific characteristics and fill a prescription is development trend on the solid electrolytic capacitor processing procedure really.
Summary of the invention
In view of this, the present invention proposes a kind ofly with electroconductive polymer electrolytical prescription and this electrolytical manufacture method of capacitor element soaking as solid electrolytic capacitor for addressing the above problem, and main purpose is: reduce the fabrication steps of the impregnation of solid electrolytic capacitor element soaking polyelectrolyte and polymerization and so as to producing the solid electrolytic capacitor of splendid capacitor specific characteristics.
Institute thinks and reaches above-mentioned purpose, and a kind of electrolytical prescription of electroconductive polymer of making solid electrolytic capacitor proposed by the invention in order to capacitor sub-prime input wherein being carried out impregnation, thereby is made solid electrolytic capacitor, and its composition comprises:
One electroconductive polymer monomer;
One oxidant, the mol ratio of this electroconductive polymer monomer and this oxidant is between 4 to 0.25;
The oxidizing agent solution concentration that one solvent, this oxidant and solvent are formed is greater than 50wt%; And
One has
The polymerization reaction delayer of functional group's five-membered ring or hexatomic ring compound, the mol ratio of this polymerization reaction delayer and this oxidant is between 0.1 to 2.0;
Wherein this polymerization reaction delayer causes this oxidant to mix back polymerization reaction take place at once not under room temperature environment with this electroconductive polymer monomer, after treating that this mixed liquor is by the abundant impregnation of capacitor sub-prime, carry out the electroconductive polymer polymerization under the impregnation temperature being higher than.
This electroconductive polymer monomer is selected from derivative or its combination in any of thiophene, pyrroles, phenyl ethene, aniline or above-mentioned high polymer monomer.
This thiophene is 3, the 4-ethene dioxythiophene.
This oxidant is selected from ferric iron compound.
Described ferric iron compound is selected from toluenesulfonic acid iron, ten DAADBSA iron, organic sulfonic acid iron, crosses ferric chlorate, iron chloride, ferric sulfate or ferric nitrate.
This polymerization reaction delayer is selected from imidazoles, methylimidazole, pyrazoles, triazole, pyridine and 1, the derivative of 2-dinitrogen mouth well or above-mentioned delayer or its combination in any.
This solvent is selected from an alcohols, a ketone or water or its combination in any.
This solvent is selected from methyl alcohol, isopropyl alcohol or acetone or its combination in any.
Above-mentioned prescription also comprises a dopant.
This dopant is selected from toluenesulfonic acid, ten DAADBSA, organic sulfonic acid, iron chloride, fluoridizes arsenic, boron fluoride, fluoridizes phosphorus, iodine, sulfuric acid, phosphoric acid, citric acid, hydrochloric acid, cross chloric acid or above-mentioned acid group salt with and related derivatives.
Purpose of the present invention also can realize by following measure:
A kind of manufacture method of making solid electrolytic capacitor, wherein this manufacture method comprises the following step:
One mixed solution is provided, and the composition of this mixed solution comprises:
One electroconductive polymer monomer;
One oxidant, the mol ratio of this electroconductive polymer monomer and this oxidant is between 4 to 0.25;
The oxidizing agent solution concentration that one solvent, this oxidant and solvent are formed is greater than 50wt%; And
One has
The polymerization reaction delayer of functional group's five-membered ring or hexatomic ring compound, the mol ratio of this polymerization reaction delayer and this oxidant is between 0.1 to 2.0;
Wherein this polymerization reaction delayer causes this oxidant to mix back polymerization reaction take place at once not under room temperature environment with this electroconductive polymer monomer, after treating that this mixed liquor is by the abundant impregnation of capacitor sub-prime, carry out the electroconductive polymer polymerization under the impregnation temperature being higher than;
One capacitor sub-prime is dropped into this mixed solution down in room temperature environment carry out impregnation; And
The temperature that improves this mixed solution with the polymerization reaction of quickening this electroconductive polymer monomer to finish the operation of impregnation.
This electroconductive polymer monomer is selected from derivative or its combination in any of thiophene, pyrroles, phenyl ethene, aniline or above-mentioned high polymer monomer.
This thiophene is 3, the 4-ethene dioxythiophene.
This oxidant is selected from and contains ferric iron compound.
This ferric iron compound is toluenesulfonic acid iron, ten DAADBSA iron, organic sulfonic acid iron, crosses ferric chlorate, iron chloride, ferric sulfate or ferric nitrate.
This polymerization reaction delayer is selected from imidazoles, methylimidazole, pyrazoles, triazole or 1, the derivative of 2-dinitrogen or above-mentioned delayer or its combination in any.
This solvent is selected from alcohols, ketone or water or its combination in any.
This solvent is methyl alcohol, isopropyl alcohol, acetone or water or its combination in any.
The composition of this mixed solution also comprises a dopant.
This dopant is selected from toluenesulfonic acid, ten DAADBSA, organic sulfonic acid, iron chloride, fluoridizes arsenic, boron fluoride, fluoridizes phosphorus, iodine, sulfuric acid, phosphoric acid, citric acid, hydrochloric acid, cross chloric acid, and the salt of above-mentioned acid group with and the composition group of related derivatives one of them.
The present invention has following advantage compared to existing technology:
The present invention makes the electrolytical prescription of electroconductive polymer and this electrolytical manufacture method of capacitor element soaking of solid electrolytic capacitor, can effectively reduce the number of times of impregnation processing procedure, and can reach better capacitor specific characteristics, and then effectively shorten the program of making, reduce cost of manufacture.
Description of drawings
Fig. 1 is that (3,4-ethylenedioxythiophene) electroconductive polymer monomer is the chemical polymerization of oxidant with toluenesulfonic acid iron to 3,4 ethene dioxythiophenes carried of the present invention;
Fig. 2 is the viscosity variation diagram of mixed solution different time under room temperature of the electroconductive polymer monomer formed of different polymerization delayers that the present invention carries and oxidant;
Fig. 3 is composition (wt) presentation graphs of the present invention differential responses thing, oxidant, polymerization reaction delayer and the solvent carried; And
Fig. 4 is the embodiment that carries of the present invention and the capacitor specific characteristics presentation graphs of comparative example made.
Concrete execution mode
The present invention is a kind of prescription and this electrolytical manufacture method of capacitor element soaking of making the polyelectrolyte of solid electrolytic capacitor.
Below will concrete feasibility of the present invention be described, see also Fig. 1 with embodiment; General common commercialization electroconductive polymer is polyaniline (polyaniline), polypyrrole (polypyrrole), polythiophene compound (polythiophene), polyphenylene ethene (polyphenylvinylene) and this four kinds of high molecular related derivatives, as poly-3,4 ethene dioxythiophenes (poly (3,4-ethylenedioxythiophene)).With poly-3,4 ethene dioxythiophenes are example, it is that the chemical polymerization of oxidant can be represented as shown in Figure 1 with toluenesulfonic acid iron (ferric p-toluenesulfonate), wherein toluenesulfonic acid iron formed toluenesulfonic acid (p-toluene sulfonic acid) dopant of polymer for this reason after peroxidating.
Because the oxidant of iron content mostly is solid-state (comprising toluenesulfonic acid iron), need be dissolved in the solvent and can use.The solvent that the present invention is used for dissolved oxidant can be alcohol, ketone, water or contains any mixed solvent of this three class.Wherein with methyl alcohol, acetone, water or contain the mixed solvent that this three class appoints kind and have best solute effect.For the mixed liquor that improves monomer and oxidizing agent solution obtains the ratio of electroconductive polymer, oxidant and the concentration of the solution formed of this solvent reaches more than the 50wt%, the mol ratio of polymerization reaction delayer and this oxidant between between 0.1 to 2.0, the mol ratio of electroconductive polymer monomer and this oxidant can obtain the effect of the best between 4 to 0.25.
Except oxidants such as toluenesulfonic acid iron, ten DAADBSA iron, organic sulfonic acid iron, mistake ferric chlorate and iron chloride, its reduzate can not need to add outside the dopant as dopant simultaneously in addition yet, remaining oxidant needs to use in addition dopant to make poly-3,4 ethene dioxythiophenes show high conductivity matter.Common dopant still has the arsenic of fluoridizing (AsF except the above-mentioned toluenesulfonic acid of mentioning and iron chloride
6 -), boron fluoride (BF
4 -), fluoridize phosphorus (PF
6 -), iodine and simple substance or many Bronsted acids, as sulfuric acid, phosphoric acid, citric acid, hydrochloric acid, cross salt and related derivatives such as the polystylene sulfonic acid (PSS) and its esters of chloric acid and above-mentioned acid group.
The oxidative polymerization of electroconductive polymer monomer also is subjected to oxidant except relevant with the oxidizing potential height of monomer oxidizing force influences.To contain the oxidant of ferric ion, the ferric ion of this class oxidant can form the misfit thing and change the ferric ion oxidizing force with the specific molecular with unshared electron pair, so the misfit bond is stronger, the oxidizing force of oxidant is lower.
Utilization of the present invention has
Functional group's the five-membered ring or the compound of hexatomic ring produce appropriate misfit bond contains the oxidant of ferric ion with reduction room temperature oxidizing force by the unshared-electron of molecule and the ferric ion of oxidant, make the mixture of monomer and oxidant in the system of room temperature and low solvent, keep stable, but in hot environment, can make oxidant oxidation electroconductive polymer monomer carry out polymerization.Have
Therefore functional group's the pentacyclic compound and the misfit ability of ferric ion only need have on a small quantity much larger than oxygen containing compound
Functional group's pentacyclic compound just can reach and delay to contain the oxidability of the oxidant of ferric ion in room temperature; To containing the oxidant of ferric ion, it has
Functional group's hexatomic ring compound has stronger misfit ability, therefore by the oxidant of high concentration with have on a small quantity
Monomer and oxidant mixed liquor that the polymerization delayer of functional group's five-membered ring or hexatomic ring is allocated, monomer whose and oxidant are main component, then this capacitor sub-prime not only has the sufficient impregnation time and can obtain the electroconductive polymer electrolyte of adequate thickness under the impregnation of limited number of times, and then produces the splendid electroconductive polymer solid electrolytic capacitor of characteristic.
The present invention adds to have in oxidant
The polymerization reaction delayer of functional group's five-membered ring or hexatomic ring makes oxidizing agent solution mix back polymerization reaction take place at once not under room temperature environment with the electroconductive polymer monomer.After treating that this mixed liquor is by the abundant impregnation of capacitor sub-prime, under higher temperature, carry out the electroconductive polymer polymerization.So can guarantee the room temperature stability of the oxidizing agent solution of high concentration, reduce because the dilution effect of solvent causes the capacitor sub-prime to need can generate through multiple tracks impregnation polymerization procedure the electrolytical shortcoming of electroconductive polymer of adequate thickness, and can guarantee that the capacitor sub-prime has the sufficient impregnation time, can generate the character homogeneous and go deep into the electroconductive polymer electrolyte of sub-prime micropore.Therefore, the capacitor sub-prime can obtain the polyelectrolyte of adequate thickness and obtain splendid capacitor specific characteristics at few impregnation mixed liquor and after carrying out polymerization reaction.
The present invention uses at normal temperature or a little more than under the normal temperature environment, has the oxidability that appropriateness delays to contain the ferric ion oxidant, and contains
The functional group contains 5-membered ring compounds such as imidazoles (imidazole), methylimidazole (2-methylimidazole), pyrazoles (pyrazole), triazole (triazole), pyridine (pyridine) and 1,2-dinitrogen (pyridazine) and derivative thereof, as the polymerization delayer of electroconductive polymer monomer to stablize the mixed liquor of electroconductive polymer monomer and oxidant; Because the misfit ability of imidazoles, methylimidazole, pyrazoles, triazole and derivative and iron ion much larger than oxygen containing compound, therefore only needs any compound of a small amount of imidazoles, methylimidazole, pyrazoles, triazole or derivatives thereof just can reach the room temperature oxidability that delays to contain ferroxidant.Have having of stronger misfit ability by the oxidant that adds iron content
Functional group's hexatomic ring compound such as pyridine, 1,2-dinitrogen (pyridazine or 1,2-diazine) and derivative obtain the high electrical conductivity electroconductive polymer electrolyte of high stable.Therefore monomer and the oxidant mixed liquor of being allocated by oxidant and a spot of polymerization delayer of high concentration, monomer and oxidant are main component, then the capacitor sub-prime not only has the sufficient impregnation time and can obtain the electroconductive polymer electrolyte of adequate thickness under few time impregnation, and then produces the splendid electroconductive polymer solid electrolytic capacitor of characteristic.
The concrete technological means of attainable cost goal of the invention below will be described in detail in detail:
Embodiment one:
Behind the toluenesulfonic acid iron that Fig. 3 is listed, the dissolve with methanol with the polymerization reaction delayer according to six groups of ratios preparation in the table after, add 3,4 ethene dioxythiophenes (being called for short EDT) monomer, the specific viscosity of measuring down six groups of mixed solutions in room temperature (25 ℃) is rate over time, the long-time stability of the mixed solution of being formed with more different polymerization reaction delayers.Its result as shown in Figure 3.
Show that from the result of Fig. 2 do not add the oxidizing agent solution of any polymerization delayer and monomer once mixing, the specific viscosity of mixed liquor rises rapidly, show that polymerization reaction carries out fast.Under viscosity changes so fast, the capacitor sub-prime will not have sufficient this mixed liquor of time impregnation.Contain tetra oxygen furyl (THF) though oxidizing agent solution can appropriateness delay the polymerization reaction of monomer in the mixed liquor, but and compare as imidazoles, methylimidazole, triazole and the pyridine of delayer equally, the use amount of oxolane is high than these four kinds of delayers, but delays effect four kinds of delayers not like this.
Embodiment two:
The high surface negative pole aluminium foil that reacts the anodal aluminium foil of formed aluminum oxide dielectric layer and electrochemical corrosion with the 36V electrochemical electrolysis each other with Manila paper (Manila paper) as release paper coiled capacitor sub-prime.This sub-prime changes into through aqueous solutions of organic acids again, repair after the damaged aluminum oxide dielectric layer, with after imidazoles mixes, add the mixing of EDT monomer, behind the toluenesulfonic acid iron of forming with the 3rd group of listed mixed liquor of Fig. 3, the dissolve with methanol again with this mixed solution of above-mentioned capacitor element soaking.The capacitor sub-prime of this impregnation mixed solution was 100 ℃ of reactions 10 minutes.After impregnation and reaction amount to secondary so repeatedly, dry with washed with methanol and under 100 ℃ temperature.This capacitor element is inserted in aluminum hull, seals with serum cap, and this capacitor fabrication is finished in the aging electric leakage of repairing capacitor of charging at last.The capacitor specific characteristics of this embodiment made as shown in Figure 4.
Embodiment three:
The toluenesulfonic acid iron of forming with the 4th group of listed listed mixed liquor of Fig. 3 mixes with methylimidazole after with dissolve with methanol, adds the EDT monomer again and mixes, and changes into this mixed solution of element soaking afterwards again with specification such as embodiment two again.The capacitor sub-prime of this impregnation mixed solution was in 100 ℃ of reactions 10 minutes.After impregnation and reaction amount to secondary so repeatedly, dry with washed with methanol and under 100 ℃ temperature.This capacitor element is inserted in aluminum hull, seals with serum cap, and this capacitor fabrication is finished in the aging electric leakage of repairing capacitor of charging at last.The capacitor specific characteristics of this embodiment made as shown in Figure 4.
Embodiment four:
The toluenesulfonic acid iron of forming with the 5th group of listed listed mixed liquor of Fig. 3 with dissolve with methanol after with 1,2,4-three eats azoles and mixes, adding the EDT monomer again mixes, again with the element soaking after the changing into again of specification such as embodiment two in this mixed solution, the capacitor sub-prime of this impregnation mixed solution is in 100 ℃ of reactions 10 minutes, after carrying out impregnation so repeatedly and reaction and amounting to secondary, dries with washed with methanol and under 100 ℃ temperature again; At last this capacitor element is inserted in aluminum hull, seals with serum cap, this capacitor fabrication is finished in the aging electric leakage of repairing capacitor of charging.The capacitor specific characteristics of this embodiment made as shown in Figure 4.
Embodiment five:
The toluenesulfonic acid iron of being formed with the 6th group of listed mixed liquor of Fig. 3 mixes with pyridine after with dissolve with methanol, adds the EDT monomer again and mixes, and changes into back this mixed solution of element soaking again with specification such as embodiment two again.The capacitor sub-prime of this impregnation mixed solution is in 100 ℃ of reactions 10 minutes, after carrying out impregnation so repeatedly and reaction and amounting to secondary, dries with washed with methanol and under 100 ℃ temperature again; At last this capacitor element is inserted in aluminum hull, seals with serum cap, this capacitor fabrication is finished in the aging electric leakage of repairing capacitor of charging.The capacitor specific characteristics of this embodiment made as shown in Figure 4.
Comparative example one:
The toluenesulfonic acid iron of forming with second group of listed mixed liquor of Fig. 3 mixes with oxolane after with dissolve with methanol, adds the EDT monomer again and mixes, and changes into this mixed solution of element soaking afterwards again with specification such as embodiment two.The capacitor sub-prime of this impregnation mixed solution was in 100 ℃ of reactions 10 minutes.After impregnation and reaction amount to secondary so repeatedly, dry with washed with methanol and under 100 ℃ temperature.This capacitor element is inserted in aluminum hull, seals with serum cap, and this capacitor fabrication is finished in the aging electric leakage of repairing capacitor of charging at last.The capacitor specific characteristics of this comparative example made as shown in Figure 4.Owing to contain a large amount of oxolanes in the mixed liquor, make that oxidant, more aforementioned each embodiment of the monomer mixed solution obtainable electroconductive polymer of institute of the each impregnation of capacitor are few, so under fixing impregnation number of times, capacitor sub-prime with the impregnation of this kind mixed liquor institute is obtained the space that the electroconductive polymer electrolyte can't fill up whole capacitor device sub-prime, so more aforementioned each embodiment of characteristic is for poor.
Comparative example two:
The consumption of the toluenesulfonic acid iron of this comparative example, methyl alcohol and EDT monomer is as shown in the 6th group of listed mixed liquor of Fig. 3 formed, and only the consumption of pyridine rises to 0.266g.With back this mixed solution of element soaking of changing into again of specification such as embodiment two, in 100 ℃ of reactions 10 minutes, the mixed liquor that sub-prime absorbed presented the dark-brown colloidal liquid after reaction as a result subsequently, and measured less than any capacitance again.Because the pyridine that contains in the mixed liquor is many than embodiment five, make oxidant to delay effect stronger.Because the asthenoxia of oxidant, make the monomer in the mixed liquor can't aggregate into the macromolecule of tool conductivity.
Claims (20)
1. prescription of making solid electrolytic capacitor in order to capacitor sub-prime input is wherein carried out impregnation, thereby is made solid electrolytic capacitor, and its composition comprises:
One electroconductive polymer monomer;
One oxidant, the mol ratio of this electroconductive polymer monomer and this oxidant is between 4 to 0.25;
The oxidizing agent solution concentration that one solvent, this oxidant and solvent are formed is greater than 50wt%; And
One has
The polymerization reaction delayer of functional group's five-membered ring or hexatomic ring compound, the mol ratio of this polymerization reaction delayer and this oxidant is between 0.1 to 2.0;
Wherein this polymerization reaction delayer causes this oxidant to mix back polymerization reaction take place at once not under room temperature environment with this electroconductive polymer monomer, after treating that this mixed liquor is by the abundant impregnation of capacitor sub-prime, carry out the electroconductive polymer polymerization under the impregnation temperature being higher than.
2. the prescription of manufacturing solid electrolytic capacitor as claimed in claim 1, it is characterized in that this electroconductive polymer monomer be selected from thiophene, than cough up, phenyl ethene, aniline or the derivative of above-mentioned high polymer monomer or the combination in any of above-mentioned high polymer monomer and derivative thereof.
3. the prescription of manufacturing solid electrolytic capacitor as claimed in claim 2 is characterized in that this thiophene is 3, the 4-ethene dioxythiophene.
4. the prescription of manufacturing solid electrolytic capacitor as claimed in claim 1 is characterized in that this oxidant is selected from ferric iron compound.
5. the prescription of manufacturing solid electrolytic capacitor as claimed in claim 4 is characterized in that described ferric iron compound is selected from toluenesulfonic acid iron, ten DAADBSA iron, organic sulfonic acid iron, crosses ferric chlorate, iron chloride, ferric sulfate or ferric nitrate.
6. the prescription of manufacturing solid electrolytic capacitor as claimed in claim 1, it is characterized in that this polymerization reaction delayer be selected from imidazoles, methylimidazole, than azoles, triazole, than pyridine and 1, the derivative of 2-dinitrogen mouth well or above-mentioned delayer or the combination in any of above-mentioned delayer and derivative thereof.
7. the prescription of manufacturing solid electrolytic capacitor as claimed in claim 1 is characterized in that this solvent is selected from an alcohols, a ketone or water or its combination in any.
8. the prescription of manufacturing solid electrolytic capacitor as claimed in claim 1 is characterized in that this solvent is selected from methyl alcohol, isopropyl alcohol or acetone or its combination in any.
9. the prescription of manufacturing solid electrolytic capacitor as claimed in claim 1 is characterized in that also comprising a dopant.
10. the prescription of manufacturing solid electrolytic capacitor as claimed in claim 9, the group that it is characterized in that this dopant is selected from toluenesulfonic acid, ten DAADBSA, organic sulfonic acid, iron chloride, fluoridizes arsenic, boron fluoride, fluoridizes phosphorus, the derivative of iodine, sulfuric acid, phosphoric acid, citric acid, hydrochloric acid, the salt of crossing chloric acid, above-mentioned acid group and above-mentioned acid group is formed.
11. a manufacture method of making solid electrolytic capacitor, wherein this manufacture method comprises the following step:
One mixed solution is provided, and the composition of this mixed solution comprises:
One electroconductive polymer monomer;
One oxidant, the mol ratio of this electroconductive polymer monomer and this oxidant is between 4 to 0.25;
The oxidizing agent solution concentration that one solvent, this oxidant and solvent are formed is greater than 50wt%; And
One has
The polymerization reaction delayer of functional group's five-membered ring or hexatomic ring compound, the mol ratio of this polymerization reaction delayer and this oxidant is between 0.1 to 2.0;
Wherein this polymerization reaction delayer causes this oxidant to mix back polymerization reaction take place at once not under room temperature environment with this electroconductive polymer monomer, after treating that this mixed liquor is by the abundant impregnation of capacitor sub-prime, carry out the electroconductive polymer polymerization under the impregnation temperature being higher than;
One capacitor sub-prime is dropped into this mixed solution down in room temperature environment carry out impregnation; And
The temperature that improves this mixed solution with the polymerization reaction of quickening this electroconductive polymer monomer to finish the operation of impregnation.
12. the manufacture method of manufacturing solid electrolytic capacitor as claimed in claim 11, it is characterized in that this electroconductive polymer monomer be selected from thiophene, than cough up, phenyl ethene, aniline or the derivative of above-mentioned high polymer monomer or the combination in any of above-mentioned high polymer monomer and derivative thereof.
13. the manufacture method of manufacturing solid electrolytic capacitor as claimed in claim 12 is characterized in that this thiophene is 3, the 4-ethene dioxythiophene.
14. the manufacture method of manufacturing solid electrolytic capacitor as claimed in claim 11, it is characterized in that this oxidant is selected from contains ferric iron compound.
15. the manufacture method of manufacturing solid electrolytic capacitor as claimed in claim 14 is characterized in that this ferric iron compound is toluenesulfonic acid iron, ten DAADBSA iron, organic sulfonic acid iron, crosses ferric chlorate, iron chloride, ferric sulfate or ferric nitrate.
16. the manufacture method of manufacturing solid electrolytic capacitor as claimed in claim 11, it is characterized in that this polymerization reaction delayer be selected from narrow azoles, methylimidazole, than azoles, triazole or 1,2-dinitrogen
Or the combination in any of the derivative of above-mentioned delayer or above-mentioned delayer and derivative thereof.
17. the manufacture method of manufacturing solid electrolytic capacitor as claimed in claim 11 is characterized in that this solvent is selected from alcohols, ketone or water or its combination in any.
18. the manufacture method of manufacturing solid electrolytic capacitor as claimed in claim 11 is characterized in that this solvent is methyl alcohol, isopropyl alcohol, acetone or water or its combination in any.
19. the manufacture method of manufacturing solid electrolytic capacitor as claimed in claim 11 is characterized in that the composition of this mixed solution also comprises a dopant.
20. the manufacture method of manufacturing solid electrolytic capacitor as claimed in claim 19, the group that it is characterized in that this dopant is selected from toluenesulfonic acid, ten DAADBSA, organic sulfonic acid, iron chloride, fluoridizes arsenic, boron fluoride, fluoridizes phosphorus, the derivative of iodine, sulfuric acid, phosphoric acid, citric acid, hydrochloric acid, the salt of crossing chloric acid, above-mentioned acid group and above-mentioned acid group is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031026362A CN100372034C (en) | 2003-02-14 | 2003-02-14 | Formula for making solid electrolytic capacitor and process for making thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031026362A CN100372034C (en) | 2003-02-14 | 2003-02-14 | Formula for making solid electrolytic capacitor and process for making thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1521779A CN1521779A (en) | 2004-08-18 |
| CN100372034C true CN100372034C (en) | 2008-02-27 |
Family
ID=34281828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031026362A Expired - Lifetime CN100372034C (en) | 2003-02-14 | 2003-02-14 | Formula for making solid electrolytic capacitor and process for making thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100372034C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101144526B1 (en) * | 2005-02-08 | 2012-05-11 | 엔이씨 도낀 가부시끼가이샤 | Dopant solution for electroconductive polymer, oxidizing agent and concurrently dopant solution for electroconductive polymer, electroconductive composition and solid electrolytic capacitor |
| CN101350252B (en) * | 2008-09-17 | 2012-06-27 | 中国振华（集团）新云电子元器件有限责任公司 | Conductive polyelectrolyte polymerization liquid prescription stored in normal temperature steadily and use thereof |
| CN103113558B (en) * | 2013-01-31 | 2015-07-01 | 深圳新宙邦科技股份有限公司 | Conductive high polymer, oxidizer for synthesis thereof and solid capacitor |
| CN104637689B (en) * | 2013-11-11 | 2017-07-07 | 财团法人工业技术研究院 | Electrolyte and its manufacture method, the composition for forming electrolyte and the capacitor comprising the electrolyte |
| TWI506031B (en) * | 2014-11-05 | 2015-11-01 | Ind Tech Res Inst | Ferric salt oxidant, solid electrolytic capacitor, and method for fabricating the same |
| US9972444B2 (en) * | 2015-05-29 | 2018-05-15 | Avx Corporation | Solid electrolytic capacitor element for use in dry conditions |
| US9672989B2 (en) * | 2015-05-29 | 2017-06-06 | Avx Corporation | Solid electrolytic capacitor assembly for use in a humid atmosphere |
| CN108538589A (en) * | 2018-04-10 | 2018-09-14 | 益阳市万京源电子有限公司 | A kind of takeup type solid capacitor preparation method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1130657A (en) * | 1995-03-03 | 1996-09-11 | 四川联合大学 | High molecular solid electrolyte and preparing process thereof |
| JP2001176758A (en) * | 1999-10-04 | 2001-06-29 | Matsushita Electric Ind Co Ltd | Solid electrolytic capacitor, method of manufacturing the same, and oxidizing agent solution for polymerization of conductive high polymer |
| JP2002033244A (en) * | 2000-05-11 | 2002-01-31 | Nec Toyama Ltd | Producing method for solid-state electrolytic capacitor |
-
2003
- 2003-02-14 CN CNB031026362A patent/CN100372034C/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1130657A (en) * | 1995-03-03 | 1996-09-11 | 四川联合大学 | High molecular solid electrolyte and preparing process thereof |
| JP2001176758A (en) * | 1999-10-04 | 2001-06-29 | Matsushita Electric Ind Co Ltd | Solid electrolytic capacitor, method of manufacturing the same, and oxidizing agent solution for polymerization of conductive high polymer |
| JP2002033244A (en) * | 2000-05-11 | 2002-01-31 | Nec Toyama Ltd | Producing method for solid-state electrolytic capacitor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1521779A (en) | 2004-08-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TW583226B (en) | Formulation in preparing solid electrolytic capacitor and process thereof | |
| US6154358A (en) | Solid electrolytic capacitor using a conducting polymer | |
| JP3235475B2 (en) | Solid electrolytic capacitor and method of manufacturing the same | |
| US8940191B2 (en) | Electroconductive polymer solution, electroconductive polymer composition, and solid electrolytic capacitor therewith and method for producing same | |
| KR101151942B1 (en) | Process for the production of electrolytic capacitors | |
| TW200523961A (en) | Electrolytic capacitors with a polymeric outer layer | |
| KR102662511B1 (en) | Gelatinable system containing ether-based compound and method and application thereof | |
| CN101350252B (en) | Conductive polyelectrolyte polymerization liquid prescription stored in normal temperature steadily and use thereof | |
| CN102709055B (en) | A kind of conducting high polymers thing catholyte solution and Synthesis and applications thereof | |
| CN107112138B (en) | The manufacturing method of electrolytic capacitor | |
| CN100372034C (en) | Formula for making solid electrolytic capacitor and process for making thereof | |
| EP3439000A1 (en) | Electrolytic capacitor and manufacturing method therefor | |
| JP2007123315A (en) | Manufacturing method of redox capacitor electrode, redox capacitor electrode obtained thereby and redox capacitor | |
| WO2011052237A1 (en) | Solid electrolytic capacitor and method for producing same | |
| CN103460319A (en) | Conductive polymer aqueous suspension, method for producing same, conductive organic material, solid electrolytic capacitor and method for manufacturing solid electrolytic capacitor | |
| CN100495602C (en) | Solid electrolytic capacitor and method for manufacturing same | |
| EP1085540A1 (en) | Solid electrolytic capacitor and method for preparing the same | |
| JP4925144B2 (en) | Manufacturing method of solid electrolytic capacitor | |
| CN102723201B (en) | Electrolyte material formulation, electrolyte material composition formed therefrom, and use thereof | |
| CN1974643B (en) | Oxidant for oxidizing polymerization to synthesize conductive polymer | |
| KR102337435B1 (en) | Electrolytic capacitor and manufacturing method thereof | |
| KR100522788B1 (en) | Method for manufacturing an aluminium condenser | |
| JP2021114604A (en) | Conductive polymer material and use thereof | |
| JP2021034684A (en) | Electrolytic capacitor and method for manufacturing the same | |
| CN115083781A (en) | Material of high-molecular capacitor and manufacturing process thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080227 |
|
| CX01 | Expiry of patent term |