CN107039184B - A kind of solid-state aluminum electrolytic capacitor and preparation method thereof - Google Patents
A kind of solid-state aluminum electrolytic capacitor and preparation method thereof Download PDFInfo
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- CN107039184B CN107039184B CN201710212913.3A CN201710212913A CN107039184B CN 107039184 B CN107039184 B CN 107039184B CN 201710212913 A CN201710212913 A CN 201710212913A CN 107039184 B CN107039184 B CN 107039184B
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- Prior art keywords
- monomer
- oxidant
- conducting polymer
- sodium sulfate
- core
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- 239000003990 capacitor Substances 0.000 title claims abstract description 23
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title claims description 5
- 239000011888 foil Substances 0.000 claims abstract description 29
- 239000000178 monomer Substances 0.000 claims abstract description 28
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 16
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 16
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims abstract description 15
- 239000007800 oxidant agent Substances 0.000 claims abstract description 15
- 230000001590 oxidative effect Effects 0.000 claims abstract description 15
- 239000002322 conducting polymer Substances 0.000 claims abstract description 14
- 229920001940 conductive polymer Polymers 0.000 claims abstract description 14
- GKWLILHTTGWKLQ-UHFFFAOYSA-N 2,3-dihydrothieno[3,4-b][1,4]dioxine Chemical group O1CCOC2=CSC=C21 GKWLILHTTGWKLQ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000243 solution Substances 0.000 claims description 16
- 238000005470 impregnation Methods 0.000 claims description 8
- 230000010355 oscillation Effects 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- 229960000935 dehydrated alcohol Drugs 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 239000011259 mixed solution Substances 0.000 claims description 3
- 238000006116 polymerization reaction Methods 0.000 claims description 3
- 238000002386 leaching Methods 0.000 claims description 2
- 150000002085 enols Chemical class 0.000 claims 1
- LWLURCPMVVCCCR-UHFFFAOYSA-N iron;4-methylbenzenesulfonic acid Chemical group [Fe].CC1=CC=C(S(O)(=O)=O)C=C1 LWLURCPMVVCCCR-UHFFFAOYSA-N 0.000 claims 1
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 6
- 230000003068 static effect Effects 0.000 abstract description 4
- FPVGTPBMTFTMRT-NSKUCRDLSA-L fast yellow Chemical compound [Na+].[Na+].C1=C(S([O-])(=O)=O)C(N)=CC=C1\N=N\C1=CC=C(S([O-])(=O)=O)C=C1 FPVGTPBMTFTMRT-NSKUCRDLSA-L 0.000 abstract description 3
- 229910052742 iron Inorganic materials 0.000 abstract description 3
- 229920001609 Poly(3,4-ethylenedioxythiophene) Polymers 0.000 description 7
- 239000004411 aluminium Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000003945 anionic surfactant Substances 0.000 description 2
- SNRUBQQJIBEYMU-UHFFFAOYSA-N dodecane Chemical compound CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000011244 liquid electrolyte Substances 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- -1 and Chemical compound 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 230000035900 sweating Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/15—Solid electrolytic capacitors
- H01G9/151—Solid electrolytic capacitors with wound foil electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/04—Electrodes or formation of dielectric layers thereon
- H01G9/042—Electrodes or formation of dielectric layers thereon characterised by the material
- H01G9/0425—Electrodes or formation of dielectric layers thereon characterised by the material specially adapted for cathode
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Polyoxymethylene Polymers And Polymers With Carbon-To-Carbon Bonds (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
A kind of solid-state aluminum electrolytic capacitor, including anode foils, Cathode Foil and the electrolytic paper between anode foils Cathode Foil, anode foils, Cathode Foil and the co-wound city core packet of electrolytic paper, core, which is wrapped to contain, is soaked with monomer and oxidant, monomer and oxidant form conducting polymer in core packet, contain dodecyl sodium sulfate and polyvinyl alcohol in conducting polymer；Monomer is EDOT, and oxidant is to toluene yellow acid iron；Mass percent of the dodecyl sodium sulfate in conducting polymer is 0.01%-1%, and mass percent of the polyvinyl alcohol in conducting polymer is 0.01%-2%.Practical cathode thermostabilization in solid-state aluminum electrolytic capacitor of the invention is good, and static capacity is high and resistivity is small, and the capacitor equivalent series resistance that this allows for producing is small.
Description
Technical field
The present invention relates to a kind of aluminium electrolutic capacitors more particularly to a kind of solid-state aluminum electrolytic capacitor and preparation method thereof.
Background technique
With the high frequency of electronic equipment power source, the demand of light and shortization and surface mounting technology development, aluminium electroloysis electricity
Container gradually develops towards miniaturization, large capacity, low ESR and high reliability.Due to liquid electrolyte aluminium electroloysis electricity
Container is difficult to bear high temperature reflux sweating heat, it is often more important that liquid electrolyte conductivity is low, so that the frequency characteristic of capacitor
Difference, it is difficult to adapt to the trend that electronic equipment develops to high frequency.With the development of technology, solid aluminum electrolytic capacitor manufacturing technology
It is increasingly mature, solve the problems, such as aluminium electrolutic capacitor miniaturization, large capacity, but practical cathode PEDT is thin in solid-state capacitor
The resistivity of film is high, is easy to be detached from from anode foils.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art, and it is low simultaneously to provide a kind of PEDT film resiativity
And it is not easy the solid-state aluminum electrolytic capacitor and preparation method thereof being detached from from anode foils.
In order to solve the above technical problems, technical solution proposed by the present invention are as follows: a kind of solid-state aluminum electrolytic capacitor, including sun
Pole foil, Cathode Foil and the electrolytic paper between anode foils Cathode Foil, anode foils, Cathode Foil and the co-wound city core of electrolytic paper
Packet, the core are wrapped containing monomer and oxidant is soaked with, and the monomer and oxidant form conducting polymer in core packet, described to lead
Contain dodecyl sodium sulfate and polyvinyl alcohol in electric polymer；The monomer is EDOT, and the oxidant is to toluene yellow acid
Iron；Mass percent of the dodecyl sodium sulfate in conducting polymer is 0.01%-1%, and the polyvinyl alcohol is in conduction
Mass percent in polymer is 0.01%-2%.
2, the production method of solid-state aluminum electrolytic capacitor according to claim 1, it is characterised in that: including following step
It is rapid: 1) it by core include soak monomer solution, 1.1) monomer is prepared, EDOT monomer is added in dehydrated alcohol, EDOT monomer and nothing
The molar ratio of water-ethanol is 1:10, uniform with supersonic oscillations；1.2) dodecyl sodium sulfate and polyvinyl alcohol is added, and uses
Supersonic oscillations are uniform, and dodecyl sodium sulfate concentration in mixed solution is 0-0.02mol/L, and the polyvinyl alcohol exists
Mass fraction in solution is 1%-4%；It 1.3) include to be immersed in monomer solution by core, the impregnation time is 10-20 minutes；
2) dry；
3) it is impregnated with oxidant, the impregnation time is 5-10 minutes；
4) it polymerize, polymerization technique is divided into two 60~65 DEG C of first stage in stage temperature, polymerize 25~30min, second-order
165~170 DEG C of Duan Wendu, 0~35min of polyase 13.
In the present invention, after the dodecyl sodium sulfate as anionic surfactant is dissolved in water, pH value 7-8 is in
Alkaline state.After addition anionic surfactant dodecyl sodium sulfate appropriate, it can not only improve the surface of solution
Power improves solution impregnation and dispersibility, and does not interfere with the pH value of electrochemical solution；Nonionic surfactant is added
After PVA, solution impregnation not only can be improved in electrochemical solution and improve the surface tension of solution for it, improve PEDT film and sun
Contact between the foil of pole, so that resistivity reduces；And the electrochemical solution containing 1%-4%PVA can penetrate into anode foils
In hole, so that monomer can be allowed to polymerize in hole during electropolymerization, to improve the static capacity of product.
Since the thermal expansion coefficient of PEDT film is different from dielectric aluminum oxide, so that being deposited between PEDT mould and deielectric-coating
In stress.With the increase of product two ends voltage, the internal calorific power of capacitor is increased, and the stress between them becomes larger, therefore
It may cause aluminum oxide insulator and generate crack or rupture, even result in PEDT film and generate break-off from anode foils,
So as to cause capacitor failure.The toughness that PEDT film can be improved after addition PVA substantially reduces mechanical stress to three two moulds of oxidation
I.e. dielectric destruction.
Compared with the prior art, the advantages of the present invention are as follows: the practical cathode in solid-state aluminum electrolytic capacitor of the invention
Thermostabilization is good, and static capacity is high and resistivity is small, and the capacitor equivalent series resistance that this allows for producing is small.
Specific embodiment
To facilitate the understanding of the present invention, present invention work more comprehensively, is meticulously described below in conjunction with preferred embodiment,
But the protection scope of the present invention is not limited to the following specific embodiments.
It should be strongly noted that when to be described as " be fixed on, be fixed in, be connected to or be connected to " another for a certain element
When on element, it can be directly fixed, affixed, connection or is connected on another element, be also possible to by connecting among other
Fitting is indirectly fixed, affixed, connects or is connected on another element.
Unless otherwise defined, all technical terms used hereinafter and the normally understood meaning of those skilled in the art
It is identical.Technical term used herein is intended merely to the purpose of description specific embodiment, is not intended to the limitation present invention
Protection scope.
Embodiment
A kind of solid-state aluminum electrolytic capacitor, including anode foils, Cathode Foil and the electrolytic paper between anode foils Cathode Foil,
Anode foils, Cathode Foil and the co-wound city core packet of electrolytic paper, core are wrapped containing monomer and oxidant is soaked with, and monomer and oxidant are in core
Conducting polymer is formed in packet, contains dodecyl sodium sulfate and polyvinyl alcohol in conducting polymer；Monomer is EDOT, oxidant
For to toluene yellow acid iron；Mass percent of the dodecyl sodium sulfate in conducting polymer is 0.01%-1%, and polyvinyl alcohol exists
Mass percent in conducting polymer is 0.01%-2%.
The production method of the solid-state aluminum electrolytic capacitor of the present embodiment, comprising the following steps: 1) include that leaching monomer is molten by core
Liquid, 1.1) monomer is prepared, EDOT monomer is added in dehydrated alcohol, the molar ratio of EDOT monomer and dehydrated alcohol is 1:10,
It is uniform with supersonic oscillations；1.2) dodecyl sodium sulfate and polyvinyl alcohol, and, dodecane uniform with supersonic oscillations is added
Base sodium sulfonate concentration in mixed solution is 0.02mol/L, and the mass fraction of polyvinyl alcohol in the solution is 4%；1.3) by core packet
Containing being immersed in monomer solution, the impregnation time is 20 minutes；
2) dry；
3) it is impregnated with oxidant, the impregnation time is 10 minutes；
4) it polymerize, polymerization technique is divided into 65 DEG C, polyase 13 0min of two first stage in stage temperature, second stage temperature 165
DEG C, polyase 13 0min.
Practical cathode thermostabilization in the solid-state aluminum electrolytic capacitor of the present embodiment is good, static capacity height and resistivity
Small, the capacitor equivalent series resistance that this allows for producing is small.
Claims (1)
1. a kind of solid-state aluminum electrolytic capacitor, including anode foils, Cathode Foil and the electrolytic paper between anode foils Cathode Foil, sun
Pole foil, Cathode Foil and electrolytic paper are co-wound at core packet, it is characterised in that: the core, which is wrapped to contain, is soaked with monomer and oxidant, institute
It states monomer and oxidant and forms conducting polymer in core packet, contain dodecyl sodium sulfate and poly- second in the conducting polymer
Enol；The monomer is EDOT, and the oxidant is p-methyl benzenesulfonic acid iron；The dodecyl sodium sulfate is in conducting polymer
Mass percent be 0.01%-1%, mass percent of the polyvinyl alcohol in conducting polymer be 0.01%-2%；
Preparation method, comprising the following steps:
It 1) include leaching monomer solution by core,
1.1) monomer is prepared, EDOT monomer is added in dehydrated alcohol, the molar ratio of EDOT monomer and dehydrated alcohol is 1:
10, it is uniform with supersonic oscillations；
1.2) dodecyl sodium sulfate and polyvinyl alcohol, and, the dodecyl sodium sulfate uniform with supersonic oscillations is added
Concentration is 0.02mol/L in mixed solution, and the mass fraction of the polyvinyl alcohol in the solution is 1%-4%；
It 1.3) include to be immersed in monomer solution by core, the impregnation time is 10-20 minutes；
2) dry；
3) it is impregnated with oxidant, the impregnation time is 5-10 minutes；
4) it polymerize, polymerization technique is divided into two 60~65 DEG C of first stage in stage temperature, polymerize 25~30min, second stage temperature
165~170 DEG C of degree, 0~35min of polyase 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710212913.3A CN107039184B (en) | 2017-04-01 | 2017-04-01 | A kind of solid-state aluminum electrolytic capacitor and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710212913.3A CN107039184B (en) | 2017-04-01 | 2017-04-01 | A kind of solid-state aluminum electrolytic capacitor and preparation method thereof |
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| Publication Number | Publication Date |
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| CN107039184A CN107039184A (en) | 2017-08-11 |
| CN107039184B true CN107039184B (en) | 2019-10-22 |
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| CN201710212913.3A Expired - Fee Related CN107039184B (en) | 2017-04-01 | 2017-04-01 | A kind of solid-state aluminum electrolytic capacitor and preparation method thereof |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109270150B (en) * | 2018-09-29 | 2022-11-04 | 东莞东阳光科研发有限公司 | Method and device for representing capacity ratio of aluminum electrolytic capacitor |
| CN111403177B (en) * | 2020-03-26 | 2021-08-06 | 湖州新江浩电子有限公司 | Manufacturing method of ultra-wide temperature range high-voltage-resistant aluminum electrolytic capacitor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1901113A (en) * | 2006-07-11 | 2007-01-24 | 福建国光电子科技股份有限公司 | Process for preparing conductive polymer cathode material of solid sheet type aluminum electrolytic capacitor |
| CN102543491A (en) * | 2012-02-29 | 2012-07-04 | 万星光电子(东莞)有限公司 | Manufacturing method for laminated solid aluminium electrolytic capacitor |
| CN102812068A (en) * | 2010-03-01 | 2012-12-05 | 日本贵弥功株式会社 | Polymerization fluid, process for production thereof, transparent film made from the polymerization fluid, and transparent electrode |
| CN105551807A (en) * | 2016-03-07 | 2016-05-04 | 湖南艾华集团股份有限公司 | Square solid-state aluminum electrolytic capacitor with flexible package and manufacturing method thereof |
-
2017
- 2017-04-01 CN CN201710212913.3A patent/CN107039184B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1901113A (en) * | 2006-07-11 | 2007-01-24 | 福建国光电子科技股份有限公司 | Process for preparing conductive polymer cathode material of solid sheet type aluminum electrolytic capacitor |
| CN102812068A (en) * | 2010-03-01 | 2012-12-05 | 日本贵弥功株式会社 | Polymerization fluid, process for production thereof, transparent film made from the polymerization fluid, and transparent electrode |
| CN102543491A (en) * | 2012-02-29 | 2012-07-04 | 万星光电子(东莞)有限公司 | Manufacturing method for laminated solid aluminium electrolytic capacitor |
| CN105551807A (en) * | 2016-03-07 | 2016-05-04 | 湖南艾华集团股份有限公司 | Square solid-state aluminum electrolytic capacitor with flexible package and manufacturing method thereof |
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| Publication number | Publication date |
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| CN107039184A (en) | 2017-08-11 |
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