CN115223796A - Dispersion for aluminum electrolytic capacitor and aluminum electrolytic capacitor - Google Patents
Dispersion for aluminum electrolytic capacitor and aluminum electrolytic capacitor Download PDFInfo
- Publication number
- CN115223796A CN115223796A CN202110404800.XA CN202110404800A CN115223796A CN 115223796 A CN115223796 A CN 115223796A CN 202110404800 A CN202110404800 A CN 202110404800A CN 115223796 A CN115223796 A CN 115223796A
- Authority
- CN
- China
- Prior art keywords
- electrolytic capacitor
- aluminum electrolytic
- compound
- dispersion
- additive
- 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.)
- Pending
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 136
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 88
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 88
- 239000006185 dispersion Substances 0.000 title claims abstract description 54
- 150000001875 compounds Chemical class 0.000 claims abstract description 29
- 239000000654 additive Substances 0.000 claims abstract description 18
- 230000000996 additive effect Effects 0.000 claims abstract description 16
- 229920001940 conductive polymer Polymers 0.000 claims abstract description 12
- 239000002270 dispersing agent Substances 0.000 claims abstract description 11
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 6
- 125000001033 ether group Chemical group 0.000 claims abstract description 5
- 239000001257 hydrogen Substances 0.000 claims abstract description 5
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 3
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 3
- 239000011593 sulfur Substances 0.000 claims abstract description 3
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims abstract 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 19
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 10
- 239000007784 solid electrolyte Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- -1 hydroxyacetonyl Chemical group 0.000 claims description 4
- 229920000123 polythiophene Polymers 0.000 claims description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 2
- 125000000217 alkyl group Chemical group 0.000 claims description 2
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 claims description 2
- 239000003960 organic solvent Substances 0.000 claims description 2
- 229920000767 polyaniline Polymers 0.000 claims description 2
- 229920000128 polypyrrole Polymers 0.000 claims description 2
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 2
- 239000007787 solid Substances 0.000 abstract description 11
- 238000000605 extraction Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 239000003792 electrolyte Substances 0.000 abstract description 3
- 238000004132 cross linking Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 39
- 229940125904 compound 1 Drugs 0.000 description 32
- 239000011259 mixed solution Substances 0.000 description 26
- 229920001609 Poly(3,4-ethylenedioxythiophene) Polymers 0.000 description 21
- 238000007789 sealing Methods 0.000 description 19
- 238000003756 stirring Methods 0.000 description 19
- 230000000052 comparative effect Effects 0.000 description 8
- 229940125782 compound 2 Drugs 0.000 description 4
- 229940126214 compound 3 Drugs 0.000 description 4
- 229940125898 compound 5 Drugs 0.000 description 4
- GHYOCDFICYLMRF-UTIIJYGPSA-N (2S,3R)-N-[(2S)-3-(cyclopenten-1-yl)-1-[(2R)-2-methyloxiran-2-yl]-1-oxopropan-2-yl]-3-hydroxy-3-(4-methoxyphenyl)-2-[[(2S)-2-[(2-morpholin-4-ylacetyl)amino]propanoyl]amino]propanamide Chemical group C1(=CCCC1)C[C@@H](C(=O)[C@@]1(OC1)C)NC([C@H]([C@@H](C1=CC=C(C=C1)OC)O)NC([C@H](C)NC(CN1CCOCC1)=O)=O)=O GHYOCDFICYLMRF-UTIIJYGPSA-N 0.000 description 3
- QFLWZFQWSBQYPS-AWRAUJHKSA-N (3S)-3-[[(2S)-2-[[(2S)-2-[5-[(3aS,6aR)-2-oxo-1,3,3a,4,6,6a-hexahydrothieno[3,4-d]imidazol-4-yl]pentanoylamino]-3-methylbutanoyl]amino]-3-(4-hydroxyphenyl)propanoyl]amino]-4-[1-bis(4-chlorophenoxy)phosphorylbutylamino]-4-oxobutanoic acid Chemical group CCCC(NC(=O)[C@H](CC(O)=O)NC(=O)[C@H](Cc1ccc(O)cc1)NC(=O)[C@@H](NC(=O)CCCCC1SC[C@@H]2NC(=O)N[C@H]12)C(C)C)P(=O)(Oc1ccc(Cl)cc1)Oc1ccc(Cl)cc1 QFLWZFQWSBQYPS-AWRAUJHKSA-N 0.000 description 3
- 229940125773 compound 10 Drugs 0.000 description 3
- 229940125797 compound 12 Drugs 0.000 description 3
- ZLVXBBHTMQJRSX-VMGNSXQWSA-N jdtic Chemical group C1([C@]2(C)CCN(C[C@@H]2C)C[C@H](C(C)C)NC(=O)[C@@H]2NCC3=CC(O)=CC=C3C2)=CC=CC(O)=C1 ZLVXBBHTMQJRSX-VMGNSXQWSA-N 0.000 description 3
- 229940068918 polyethylene glycol 400 Drugs 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 229920000223 polyglycerol Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 239000005518 polymer electrolyte Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-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
- H01G9/022—Electrolytes; Absorbents
- H01G9/025—Solid electrolytes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-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
- H01G9/022—Electrolytes; Absorbents
- H01G9/025—Solid electrolytes
- H01G9/028—Organic semiconducting electrolytes, e.g. TCNQ
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-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
- H01G9/045—Electrodes or formation of dielectric layers thereon characterised by the material based on aluminium
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to the technical field of solid electrolytic capacitors, in particular to a dispersion for an aluminum electrolytic capacitor and the aluminum electrolytic capacitor. The dispersion comprises a dispersant, and a conductive polymer and an additive which are dispersed in the dispersant, wherein the additive is selected from one or more compounds shown in the following structural formula,
the compound has at least one hydroxyl group and at least one ether group, wherein R1 and R2 are mutually independent and are selected from a sulfur-containing group, a carbon-containing group and hydrogen, and n is an integer of 1-10. The dispersion of the invention uses the additive with polyhydroxy ether structure to improve the capacity extraction of the aluminum electrolytic capacitor and reduce the equivalent resistance, and the additive with polyhydroxy structure can promoteThe cross-linking effect between the conductive polymers can be improved, and the electrolyte layer and the dielectric layer Al generated by the conductive polymers can be improved 2 O 3 The combination tightness of the film improves the capacity extraction rate of the aluminum electrolytic capacitor and reduces the loss value and the equivalent resistance of the aluminum electrolytic capacitor.
Description
Technical Field
The invention relates to the technical field of solid electrolytic capacitors, in particular to a dispersion for an aluminum electrolytic capacitor and the aluminum electrolytic capacitor.
Background
The solid electrolytic capacitor adopts a solid conductive material with high conductivity and good thermal stability as an electrolyte, compared with the common electrolytic capacitor, the solid electrolytic capacitor not only has all the characteristics of the common electrolytic capacitor, but also has the characteristics of good reliability, long service life, high frequency, low impedance, super-large ripple current resistance and the like, can be used in the fields of computers, communication, military, industrial control and the like and in the new generation high-grade complete machine products of consumer electronic products such as cameras, video recorders, flat-panel televisions, game machines and the like, is beneficial to the integration and miniaturization of electronic products, and can overcome the defects of easy liquid leakage and short service life of the liquid electrolytic capacitor. With the rapid development of the domestic electronic information industry, the polymer solid electrolytic capacitor will gradually replace the common low-voltage electrolytic capacitor from the development trend of recent years, and will become one of the post products of the electronic information industry in the 21 st century.
With the increasing demand for the performance of solid electrolytic capacitors, researchers have sought to further increase the conductivity of conductive polymer electrolytes and reduce the equivalent resistance (ESR) of the capacitors. However, the conventional additives have poor compatibility with conductive polymers and poor dispersibility, which hinder charge transfer and conductivity improvement. In particular, during the charging and discharging processes, the capacity extraction rate of the solid electrolytic capacitor is rapidly reduced, and the ESR value is rapidly increased, so that the performance of the solid electrolytic capacitor is rapidly deteriorated and the solid electrolytic capacitor is failed.
The addition of suitable additives to the dispersion is an effective way to increase the conductivity of the polymer. Polyethylene glycol and derivatives thereof and polyglycerol are used in the prior art, and the main function is to improve the breakdown voltage. For example, chinese patent publication No. CN103429796a discloses reduction of ESR in a capacitor comprising PEDOT/PSS as a solid electrolyte by means of polyglycerol, but does not significantly improve capacity.
Disclosure of Invention
The invention aims to solve the problems of low capacity extraction and high ESR of the solid electrolytic capacitor in the prior art. In order to solve the problems, the invention provides a dispersion for an aluminum electrolytic capacitor and an aluminum electrolytic capacitor prepared by using the dispersion.
The technical scheme adopted by the invention for solving the technical problems is as follows:
provided is a dispersion for an aluminum electrolytic capacitor, comprising a dispersant, and a conductive polymer and an additive dispersed in the dispersant, the additive being selected from one or more compounds represented by the following structural formula,
the compound has at least one hydroxyl group and at least one ether group, wherein R1 and R2 are mutually independent and are selected from a sulfur-containing group, a carbon-containing group and hydrogen, and n is an integer of 1-10. When n is 1 to 10, the water solubility of the dispersant is good, and if n is more than 10, the water solubility of the dispersant is poor, and the overall performance of the capacitor is affected. Preferably, n is an integer of 1 to 5.
Further, R1 and R2 are mutually independent and selected from sulfonate, sulfate, carbonyl, hydroxy acetonyl, glycerol, propylene glycol, hydrogen and alkyl.
Further, at least one of R1 and R2 is selected from the group consisting of a hydroxyacetonyl group, a glycerol group and a propylene glycol group. R1 or R2 carries hydroxyl or both ends carry hydroxyl, and the compound shown in the structural formula I has both ether bond and hydroxyl, so that the bonding tightness of the conductive polymer and the dielectric oxide layer can be greatly improved, and the capacitor has the advantages of improving the capacity of the capacitor and reducing the ESR value.
Further, the additive is selected from one or more of the following compounds 1 to 12:
further, the content of the additive is 0.01% to 10% with respect to the total mass of the dispersion, and the content of the additive is more preferably 0.1% to 5%. When the content of the additive is too high, the viscosity of the dispersion is increased, the impregnation effect is affected, and the performance of the capacitor is adversely affected; when the content of the compound represented by the structural formula I is too low, the effect of improving the performance is not significantly exerted.
Further, the conductive polymer is selected from one or more of polythiophene, polypyrrole, polyaniline and derivatives thereof. Preferred are polythiophene and a derivative thereof, and more preferred is poly (3,4-ethylenedioxythiophene).
Further, the dispersant is selected from an organic solvent and/or water, and the dispersant is preferably water. The dispersion can be prepared by methods known in the art.
The present invention also provides an aluminum electrolytic capacitor, comprising: an anode body having a dielectric layer on the surface thereof, a cathode body, a separator, and a solid electrolyte layer covering at least a part of the dielectric layer, the solid electrolyte layer being prepared from the dispersion.
The invention provides a dispersoid for an aluminum electrolytic capacitor and the aluminum electrolytic capacitor, which have the following beneficial effects:
(1) The aluminum electrolytic capacitor dispersoid uses the compound shown in the structural formula I with the polyhydroxy ether structure as an additive to improve the capacity extraction of the aluminum electrolytic capacitor and reduce the ESR value, mainly because the polyhydroxy structure can promote the crosslinking effect between conductive polymers and can improve the electrolyte layer and the dielectric layer Al generated by the conductive polymers 2 O 3 The combination tightness of the film improves the capacity extraction rate of the aluminum electrolytic capacitor and reduces the loss value and the equivalent resistance of the aluminum electrolytic capacitor.
(2) According to the dispersion for the aluminum electrolytic capacitor, the compound shown by the structural formula with n being more than or equal to 1 and less than or equal to 10 can be better dissolved in the dispersion, a dispersion system can not be damaged, and the dispersion can not have viscosity increase or gel.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to specific embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The core package adopted for preparing the electrolytic capacitor adopts a winding core package with the size of 10 × 13 and the specification of 16V 1000.
Example 1
This example is provided to illustrate the method of preparing the aluminum electrolytic capacitor dispersion disclosed in the present invention, and an aluminum electrolytic capacitor prepared using the dispersion.
Adding the compound 1 into PEDOT/PSS, wherein the mass fraction of the compound 1 is 5% of the total amount of the mixed solution as shown in Table 1, stirring for 6h at normal temperature by using a magnetic stirrer, and homogenizing by using a homogenizer to obtain the aluminum electrolytic capacitor dispersoid.
The core package of the electrolytic capacitor is immersed in the aluminum electrolytic capacitor dispersion prepared in the embodiment for 30min under the condition of negative pressure and dried, the steps are repeated for 3 times, and then the aluminum electrolytic capacitor is assembled by sealing.
Example 2
As shown in table 1, the present example is different from example 1 only in that the mass fraction of compound 1 is 0.1% of the total amount of the mixed solution, and other parameters and methods are the same as those of example 1. The method comprises the following specific steps:
and adding the compound 1 into PEDOT/PSS, wherein the mass fraction of the compound 1 is 0.1 percent of the total amount of the mixed solution, stirring for 6 hours at normal temperature by using a magnetic stirrer, and homogenizing by using a homogenizer to obtain the aluminum electrolytic capacitor dispersoid.
And immersing the electrolytic capacitor core package into the aluminum electrolytic capacitor dispersion prepared in the embodiment for 30min under the condition of negative pressure, drying, repeating the steps for 3 times, and sealing to assemble the aluminum electrolytic capacitor.
Example 3
As shown in table 1, the present example is different from example 1 only in that the mass fraction of compound 1 is 3% of the total amount of the mixed solution, and other parameters and methods are the same as those of example 1. The method comprises the following specific steps:
and adding the compound 1 into PEDOT/PSS, wherein the mass fraction of the compound 1 is 3 percent of the total amount of the mixed solution, stirring for 6 hours at normal temperature by using a magnetic stirrer, and homogenizing by using a homogenizer to obtain the aluminum electrolytic capacitor dispersoid.
The core package of the electrolytic capacitor is immersed in the aluminum electrolytic capacitor dispersion prepared in the embodiment for 30min under the condition of negative pressure and dried, the steps are repeated for 3 times, and then the aluminum electrolytic capacitor is assembled by sealing.
Example 4
As shown in table 1, the present example is different from example 1 only in that the mass fraction of compound 1 is 0.01% of the total amount of the mixed solution, and other parameters and methods are the same as those of example 1. The method comprises the following specific steps:
and adding the compound 1 into PEDOT/PSS, wherein the mass fraction of the compound 1 is 0.01 percent of the total amount of the mixed solution, stirring for 6 hours at normal temperature by using a magnetic stirrer, and homogenizing by using a homogenizer to obtain the aluminum electrolytic capacitor dispersoid.
The core package of the electrolytic capacitor is immersed in the aluminum electrolytic capacitor dispersion prepared in the embodiment for 30min under the condition of negative pressure and dried, the steps are repeated for 3 times, and then the aluminum electrolytic capacitor is assembled by sealing.
Example 5
As shown in table 1, the present example is different from example 1 only in that the mass fraction of compound 1 is 10% of the total amount of the mixed solution, and other parameters and methods are the same as those of example 1. The method comprises the following specific steps:
and adding the compound 1 into PEDOT/PSS, wherein the mass fraction of the compound 1 is 10 percent of the total amount of the mixed solution, stirring for 6 hours at normal temperature by using a magnetic stirrer, and homogenizing by using a homogenizer to obtain the aluminum electrolytic capacitor dispersoid.
The core package of the electrolytic capacitor is immersed in the aluminum electrolytic capacitor dispersion prepared in the embodiment for 30min under the condition of negative pressure and dried, the steps are repeated for 3 times, and then the aluminum electrolytic capacitor is assembled by sealing.
Comparative example 1
As shown in table 1, this example is different from example 1 only in that compound 1 is not added, and other parameters and methods are the same as those of example 1. The method comprises the following specific steps:
and (3) stirring PEDOT/PSS for 6h at normal temperature by using a magnetic stirrer, and homogenizing by using a homogenizer to obtain the aluminum electrolytic capacitor dispersoid.
The core package of the electrolytic capacitor is immersed in the aluminum electrolytic capacitor dispersion prepared in the embodiment for 30min under the condition of negative pressure and dried, the steps are repeated for 3 times, and then the aluminum electrolytic capacitor is assembled by sealing.
Comparative example 2
As shown in table 1, this example is different from example 1 only in that compound 1 was replaced with glycerol, and other parameters and methods were the same as those of example 1. The method comprises the following specific steps:
and (2) adding glycerol into PEDOT/PSS, wherein the mass fraction of the glycerol is 5% of the total amount of the mixed solution as shown in Table 1, stirring for 6 hours at normal temperature by using a magnetic stirrer, and homogenizing by using a homogenizer to obtain the aluminum electrolytic capacitor dispersoid.
And immersing the electrolytic capacitor core package into the aluminum electrolytic capacitor dispersion prepared in the embodiment for 30min under the condition of negative pressure, drying, repeating the steps for 3 times, and sealing to assemble the aluminum electrolytic capacitor.
Comparative example 3
As shown in table 1, this example is different from example 1 only in that compound 1 is replaced with polyethylene glycol 400, and other parameters and methods are the same as example 1. The method comprises the following specific steps:
adding polyethylene glycol 400 into PEDOT/PSS, wherein the mass fraction of the polyethylene glycol 400 is 5% of the total amount of the mixed solution as shown in Table 1, stirring for 6h at normal temperature by using a magnetic stirrer, and homogenizing by using a homogenizer to obtain the aluminum electrolytic capacitor dispersoid.
The core package of the electrolytic capacitor is immersed in the aluminum electrolytic capacitor dispersion prepared in the embodiment for 30min under the condition of negative pressure and dried, the steps are repeated for 3 times, and then the aluminum electrolytic capacitor is assembled by sealing.
Example 6
As shown in table 1, this example is different from example 1 only in that compound 1 is replaced with compound 2, the mass fraction of compound 2 is 3% of the total amount of the mixed solution, and other parameters and methods are the same as those of example 1. The method comprises the following specific steps:
and adding the compound 2 into PEDOT/PSS, wherein the mass fraction of the compound 2 is 3 percent of the total amount of the mixed solution, stirring for 6 hours at normal temperature by using a magnetic stirrer, and homogenizing by using a homogenizer to obtain the aluminum electrolytic capacitor dispersoid.
The core package of the electrolytic capacitor is immersed in the aluminum electrolytic capacitor dispersion prepared in the embodiment for 30min under the condition of negative pressure and dried, the steps are repeated for 3 times, and then the aluminum electrolytic capacitor is assembled by sealing.
Example 7
As shown in table 1, this example is different from example 1 only in that compound 1 is replaced with compound 3, the mass fraction of compound 3 is 2% of the total amount of the mixed solution, and other parameters and methods are the same as those of example 1. The method comprises the following specific steps:
and adding the compound 3 into PEDOT/PSS, wherein the mass fraction of the compound 3 is 2 percent of the total amount of the mixed solution, stirring for 6 hours at normal temperature by using a magnetic stirrer, and homogenizing by using a homogenizer to obtain the aluminum electrolytic capacitor dispersoid.
The core package of the electrolytic capacitor is immersed in the aluminum electrolytic capacitor dispersion prepared in the embodiment for 30min under the condition of negative pressure and dried, the steps are repeated for 3 times, and then the aluminum electrolytic capacitor is assembled by sealing.
Example 8
As shown in table 1, this example is different from example 1 only in that compound 1 was replaced with compound 5, the mass fraction of compound 5 was 1% of the total amount of the mixed solution, and other parameters and methods were the same as in example 1. The method comprises the following specific steps:
and adding the compound 5 into PEDOT/PSS, wherein the mass fraction of the compound 5 is 1 percent of the total amount of the mixed solution, stirring for 6 hours at normal temperature by using a magnetic stirrer, and homogenizing by using a homogenizer to obtain the aluminum electrolytic capacitor dispersoid.
The core package of the electrolytic capacitor is immersed in the aluminum electrolytic capacitor dispersion prepared in the embodiment for 30min under the condition of negative pressure and dried, the steps are repeated for 3 times, and then the aluminum electrolytic capacitor is assembled by sealing.
Example 9
As shown in table 1, this example is different from example 1 only in that compound 1 is replaced with compound 8, the mass fraction of compound 8 is 1% of the total amount of the mixed solution, and other parameters and methods are the same as those of example 1. The method comprises the following specific steps:
and adding the compound 8 into PEDOT/PSS, wherein the mass fraction of the compound 8 is 1 percent of the total amount of the mixed solution, stirring for 6 hours at normal temperature by using a magnetic stirrer, and homogenizing by using a homogenizer to obtain the aluminum electrolytic capacitor dispersoid.
The core package of the electrolytic capacitor is immersed in the aluminum electrolytic capacitor dispersion prepared in the embodiment for 30min under the condition of negative pressure and dried, the steps are repeated for 3 times, and then the aluminum electrolytic capacitor is assembled by sealing.
Example 10
As shown in table 1, this example is different from example 1 only in that compound 1 is replaced with compound 4, and other parameters and methods are the same as those of example 1. The method comprises the following specific steps:
and adding a compound 4 into PEDOT/PSS, wherein the mass fraction of the compound 4 is 5% of the total amount of the mixed solution, stirring for 6 hours at normal temperature by using a magnetic stirrer, and homogenizing by using a homogenizer to obtain the aluminum electrolytic capacitor dispersoid.
The core package of the electrolytic capacitor is immersed in the aluminum electrolytic capacitor dispersion prepared in the embodiment for 30min under the condition of negative pressure and dried, the steps are repeated for 3 times, and then the aluminum electrolytic capacitor is assembled by sealing.
Example 11
As shown in table 1, this example is different from example 1 only in that compound 1 is replaced with compound 6, and other parameters and methods are the same as those of example 1. The method comprises the following specific steps:
and adding the compound 6 into PEDOT/PSS, wherein the mass fraction of the compound 6 is 5 percent of the total amount of the mixed solution, stirring for 6 hours at normal temperature by using a magnetic stirrer, and homogenizing by using a homogenizer to obtain the aluminum electrolytic capacitor dispersoid.
The core package of the electrolytic capacitor is immersed in the aluminum electrolytic capacitor dispersion prepared in the embodiment for 30min under the condition of negative pressure and dried, the steps are repeated for 3 times, and then the aluminum electrolytic capacitor is assembled by sealing.
Example 12
As shown in table 1, this example is different from example 1 only in that compound 1 is replaced with compound 7, and other parameters and methods are the same as those of example 1. The method comprises the following specific steps:
and adding a compound 7 into the PEDOT/PSS, wherein the mass fraction of the compound 7 is 5% of the total amount of the mixed solution, stirring for 6 hours at normal temperature by using a magnetic stirrer, and homogenizing by using a homogenizer to obtain the aluminum electrolytic capacitor dispersoid.
The core package of the electrolytic capacitor is immersed in the aluminum electrolytic capacitor dispersion prepared in the embodiment for 30min under the condition of negative pressure and dried, the steps are repeated for 3 times, and then the aluminum electrolytic capacitor is assembled by sealing.
Example 13
As shown in table 1, this example is different from example 1 only in that compound 1 is replaced with compound 9, and other parameters and methods are the same as those of example 1. The method comprises the following specific steps:
and adding the compound 9 into PEDOT/PSS, wherein the mass fraction of the compound 9 is 5 percent of the total amount of the mixed solution, stirring for 6 hours at normal temperature by using a magnetic stirrer, and homogenizing by using a homogenizer to obtain the aluminum electrolytic capacitor dispersoid.
The core package of the electrolytic capacitor is immersed in the aluminum electrolytic capacitor dispersion prepared in the embodiment for 30min under the condition of negative pressure and dried, the steps are repeated for 3 times, and then the aluminum electrolytic capacitor is assembled by sealing.
Example 14
As shown in table 1, this example is different from example 1 only in that compound 1 was replaced with compound 10, and other parameters and methods were the same as those of example 1. The method comprises the following specific steps:
and adding the compound 10 into PEDOT/PSS, wherein the mass fraction of the compound 10 is 5 percent of the total amount of the mixed solution, stirring for 6 hours at normal temperature by using a magnetic stirrer, and homogenizing by using a homogenizer to obtain the aluminum electrolytic capacitor dispersoid.
The core package of the electrolytic capacitor is immersed in the aluminum electrolytic capacitor dispersion prepared in the embodiment for 30min under the condition of negative pressure and dried, the steps are repeated for 3 times, and then the aluminum electrolytic capacitor is assembled by sealing.
Example 15
As shown in table 1, this example is different from example 1 only in that compound 1 is replaced with compound 11, and other parameters and methods are the same as those of example 1. The method comprises the following specific steps:
and adding the compound 11 into PEDOT/PSS, wherein the mass fraction of the compound 11 is 5 percent of the total amount of the mixed solution, stirring for 6 hours at normal temperature by using a magnetic stirrer, and homogenizing by using a homogenizer to obtain the aluminum electrolytic capacitor dispersoid.
The core package of the electrolytic capacitor is immersed in the aluminum electrolytic capacitor dispersion prepared in the embodiment for 30min under the condition of negative pressure and dried, the steps are repeated for 3 times, and then the aluminum electrolytic capacitor is assembled by sealing.
Example 16
As shown in table 1, this example is different from example 1 only in that compound 1 is replaced with compound 12, and other parameters and methods are the same as those of example 1. The method comprises the following specific steps:
and adding the compound 12 into PEDOT/PSS, wherein the mass fraction of the compound 12 is 5 percent of the total amount of the mixed solution, stirring for 6 hours at normal temperature by using a magnetic stirrer, and homogenizing by using a homogenizer to obtain the aluminum electrolytic capacitor dispersoid.
The core package of the electrolytic capacitor is immersed in the aluminum electrolytic capacitor dispersion prepared in the embodiment for 30min under the condition of negative pressure and dried, the steps are repeated for 3 times, and then the aluminum electrolytic capacitor is assembled by sealing.
The electrolytic capacitors prepared in examples 1 to 16 and comparative examples 1 to 3 were subjected to performance tests: the electrostatic capacity, loss value and equivalent resistance of the capacitor at a frequency of 120Hz and 100kHz were tested using an automatic electronic parts analyzer.
TABLE 1 types and contents of Compounds in dispersions of examples 1 to 16 and comparative examples 1 to 3
The test results of the above examples and comparative examples are shown in table 2 below:
TABLE 2 Performance test of the prepared electrolytic capacitors of examples 1 to 16 and comparative examples 1 to 3
As can be seen from the data in Table 2, the electrolytic capacitor produced from the dispersion for aluminum electrolytic capacitors of the present invention had an electrostatic capacity (Cap) of 1021. Mu.F or more, a capacitance loss value (DF) of 3.01% or less, and an equivalent resistance (ESR) of 7.02 mOmega or less, and the electrolytic capacitor of the present invention had a higher electrostatic capacity, a lower capacitance loss value and an equivalent resistance.
As can be seen from the test results of examples 1 to 5 in Table 2, the content of Compound 1 in the dispersion is closely related to the improvement of the conductive performance of the electrolytic capacitor. When the content of the compound 1 is 0.1-5%, the performance of the electrolytic capacitor prepared by the dispersion is obviously improved; when the content of the compound 1 is lower, the dispersion has weaker adsorption effect on an aluminum oxide film and cannot play a role in obviously improving the performance of an aluminum electrolytic capacitor; when the content of compound 1 is too high, the viscosity of the dispersion increases, and the impregnation effect is impaired, and the performance of the capacitor is impaired. As can be seen from the test results of comparative examples 1-3 in Table 2, compared with the prior art, the additive of the invention can improve the capacity extraction rate of the aluminum electrolytic capacitor, reduce the loss value and the equivalent resistance of the aluminum electrolytic capacitor, and greatly improve the conductivity and the stability of the aluminum electrolytic capacitor.
The above description is intended to be illustrative of the preferred embodiment of the present invention and should not be taken as limiting the invention, but rather, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Claims (8)
1. A dispersion for an aluminum electrolytic capacitor, comprising a dispersant, and a conductive polymer and an additive dispersed in the dispersant, wherein the additive is one or more selected from the group consisting of compounds represented by the following structural formula,
the compound has at least one hydroxyl group and at least one ether group, wherein R1 and R2 are mutually independent and are selected from a sulfur-containing group, a carbon-containing group and hydrogen, and n is an integer of 1-10.
2. Dispersion according to claim 1, characterized in that R1, R2 are independently selected from the group consisting of sulfonate, sulfate, carbonyl, hydroxyacetonyl, glycerol, propylene glycol, hydrogen, alkyl.
3. The dispersion of claim 2, wherein at least one of R1 and R2 is selected from the group consisting of hydroxyacetonyl, glycerol-based, and propylene glycol-based.
4. The dispersion according to claim 1, wherein the additive is selected from one or more of the following compounds 1 to 12:
5. dispersion according to any one of claims 1 to 4, characterized in that the additive is present in an amount of 0.01% to 10% relative to the total mass of the dispersion.
6. The dispersion according to any one of claims 1 to 4, wherein the electrically conductive polymer is selected from one or more of polythiophene, polypyrrole, polyaniline, and derivatives thereof.
7. A dispersion according to claim 1, characterised in that the dispersant is selected from organic solvents and/or water.
8. An aluminum electrolytic capacitor, comprising: an anode body having a dielectric layer on the surface thereof, a cathode body, a separator, and a solid electrolyte layer covering at least a part of the dielectric layer, wherein the solid electrolyte layer is prepared from the dispersion according to any one of claims 1 to 7.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110404800.XA CN115223796A (en) | 2021-04-15 | 2021-04-15 | Dispersion for aluminum electrolytic capacitor and aluminum electrolytic capacitor |
| JP2023552144A JP2024509119A (en) | 2021-04-15 | 2022-03-25 | Dispersion for aluminum electrolytic capacitors and aluminum electrolytic capacitors |
| KR1020237029069A KR20230147635A (en) | 2021-04-15 | 2022-03-25 | Dispersants for aluminum electrolytic capacitors and aluminum electrolytic capacitors |
| PCT/CN2022/083006 WO2022218130A1 (en) | 2021-04-15 | 2022-03-25 | Dispersion for aluminum electrolytic capacitor and aluminum electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110404800.XA CN115223796A (en) | 2021-04-15 | 2021-04-15 | Dispersion for aluminum electrolytic capacitor and aluminum electrolytic capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115223796A true CN115223796A (en) | 2022-10-21 |
Family
ID=83604187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110404800.XA Pending CN115223796A (en) | 2021-04-15 | 2021-04-15 | Dispersion for aluminum electrolytic capacitor and aluminum electrolytic capacitor |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2024509119A (en) |
| KR (1) | KR20230147635A (en) |
| CN (1) | CN115223796A (en) |
| WO (1) | WO2022218130A1 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104078239A (en) * | 2014-06-25 | 2014-10-01 | 福建国光电子科技股份有限公司 | Polymerization solution for solid electrolytic capacitor to manufacture solid electrolyte layer |
| CN105761937B (en) * | 2016-02-25 | 2019-02-15 | 深圳新宙邦科技股份有限公司 | A kind of aluminum electrolytic condenser and preparation method thereof |
-
2021
- 2021-04-15 CN CN202110404800.XA patent/CN115223796A/en active Pending
-
2022
- 2022-03-25 WO PCT/CN2022/083006 patent/WO2022218130A1/en active Application Filing
- 2022-03-25 JP JP2023552144A patent/JP2024509119A/en active Pending
- 2022-03-25 KR KR1020237029069A patent/KR20230147635A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022218130A1 (en) | 2022-10-20 |
| KR20230147635A (en) | 2023-10-23 |
| JP2024509119A (en) | 2024-02-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101660604B1 (en) | Electrolyte capacitor, and method for producing same | |
| EP2147953B1 (en) | Conductive polymer solution, conductive coating, capacitor and process for manufacturing capacitor | |
| KR101571191B1 (en) | Electrode structure for an energy storage device | |
| CN1773640B (en) | Solid electrolytic capacitor and producing method thereof | |
| CN110692115A (en) | Hybrid aluminum electrolytic capacitor and manufacturing method thereof | |
| CN101916671B (en) | Preparation method of solid electrolytic capacitor capable of reducing ESR and enhancing electrostatic capacitance | |
| US20040218347A1 (en) | Flame-retardant electrolyte solution for electrochemical double-layer capacitors | |
| CN107851519A (en) | Electrolytic capacitor | |
| CN108028134A (en) | Electrolytic capacitor | |
| CN115223796A (en) | Dispersion for aluminum electrolytic capacitor and aluminum electrolytic capacitor | |
| JP4707538B2 (en) | Electrolytic solution for driving electrolytic capacitor and electrolytic capacitor using the same | |
| CN112979927B (en) | Composition, polymer for capacitor and capacitor | |
| CN110010353B (en) | Polymer dispersion and solid electrolytic capacitor | |
| KR100722973B1 (en) | Method of producing a solid electrolytic capacitor by using a conductive polymer electrolytic composition | |
| US6862170B2 (en) | Solid electrolytic capacitor and its producing method | |
| KR20220004968A (en) | Conductive polymers, capacitors and methods of manufacturing the same | |
| WO2017143736A1 (en) | Aluminum electrolytic capacitor and manufacturing method thereof | |
| JP2003173932A (en) | Solid-state capacitor and its manufacturing method | |
| CN102723201B (en) | Electrolyte material formulation, electrolyte material composition formed therefrom, and use thereof | |
| CN111875935B (en) | Conductive polymer composition and solid aluminum electrolytic capacitor | |
| CN113257577B (en) | Preparation method of solid-liquid mixed electrolytic capacitor with low ESR (equivalent series resistance) increase rate after high temperature | |
| CN109300696A (en) | The preparation method of the treatment fluid and solid-state capacitor that are promoted for solid capacitor pressure resistance | |
| CN114974899B (en) | Novel solid aluminum electrolytic capacitor and preparation method thereof | |
| CN112582175B (en) | Solid-state aluminum electrolytic capacitor and preparation method thereof | |
| CN116525304B (en) | Preparation method of solid-liquid mixed electrolytic capacitor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |