CN105938759A - Electrolytic capacitor middle-high voltage electrolyte and preparation method thereof - Google Patents
Electrolytic capacitor middle-high voltage electrolyte and preparation method thereof Download PDFInfo
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- CN105938759A CN105938759A CN201610381589.3A CN201610381589A CN105938759A CN 105938759 A CN105938759 A CN 105938759A CN 201610381589 A CN201610381589 A CN 201610381589A CN 105938759 A CN105938759 A CN 105938759A
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- 239000003792 electrolyte Substances 0.000 title claims abstract description 37
- 239000003990 capacitor Substances 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 40
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 10
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 9
- 239000001257 hydrogen Substances 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 6
- 125000005210 alkyl ammonium group Chemical group 0.000 claims abstract description 6
- 150000002828 nitro derivatives Chemical group 0.000 claims abstract description 6
- 229940116351 sebacate Drugs 0.000 claims abstract description 6
- 239000002904 solvent Substances 0.000 claims abstract description 5
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 claims abstract description 4
- GJYJYFHBOBUTBY-UHFFFAOYSA-N alpha-camphorene Chemical compound CC(C)=CCCC(=C)C1CCC(CCC=C(C)C)=CC1 GJYJYFHBOBUTBY-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 3
- 150000001412 amines Chemical class 0.000 claims abstract description 3
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 claims abstract description 3
- 235000019837 monoammonium phosphate Nutrition 0.000 claims abstract description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 17
- 229910052782 aluminium Inorganic materials 0.000 claims description 17
- -1 ammonium carboxylate salt Chemical class 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 6
- 239000000243 solution Substances 0.000 claims description 6
- 238000005886 esterification reaction Methods 0.000 claims description 4
- 150000003014 phosphoric acid esters Chemical class 0.000 claims description 4
- DCKVNWZUADLDEH-UHFFFAOYSA-N sec-butyl acetate Chemical compound CCC(C)OC(C)=O DCKVNWZUADLDEH-UHFFFAOYSA-N 0.000 claims description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 3
- 239000011259 mixed solution Substances 0.000 claims description 3
- 229910052698 phosphorus Inorganic materials 0.000 claims description 3
- 239000011574 phosphorus Substances 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 150000005846 sugar alcohols Polymers 0.000 claims description 3
- SBYOZVQDVCZBCC-UHFFFAOYSA-N CCCCN.OC(CCCCCCC(O)=O)=O Chemical compound CCCCN.OC(CCCCCCC(O)=O)=O SBYOZVQDVCZBCC-UHFFFAOYSA-N 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims description 2
- 230000007423 decrease Effects 0.000 claims 1
- 239000012046 mixed solvent Substances 0.000 claims 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 8
- 150000003863 ammonium salts Chemical class 0.000 abstract description 6
- 229910052681 coesite Inorganic materials 0.000 abstract description 4
- 229910052906 cristobalite Inorganic materials 0.000 abstract description 4
- 239000000377 silicon dioxide Substances 0.000 abstract description 4
- 229910052682 stishovite Inorganic materials 0.000 abstract description 4
- 229910052905 tridymite Inorganic materials 0.000 abstract description 4
- 229910052799 carbon Inorganic materials 0.000 abstract description 3
- 235000012239 silicon dioxide Nutrition 0.000 abstract description 3
- 150000001875 compounds Chemical class 0.000 abstract 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 abstract 2
- JKEPZLCXHQBXFD-UHFFFAOYSA-N azanium;2-butyl-8-hydroxy-8-oxooctanoate Chemical compound [NH4+].CCCCC(C([O-])=O)CCCCCC(O)=O JKEPZLCXHQBXFD-UHFFFAOYSA-N 0.000 abstract 1
- BNMJSBUIDQYHIN-UHFFFAOYSA-N butyl dihydrogen phosphate Chemical compound CCCCOP(O)(O)=O BNMJSBUIDQYHIN-UHFFFAOYSA-N 0.000 abstract 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 abstract 1
- 239000004411 aluminium Substances 0.000 description 8
- 238000005868 electrolysis reaction Methods 0.000 description 6
- 239000002689 soil Substances 0.000 description 5
- 239000011888 foil Substances 0.000 description 3
- 229920005549 butyl rubber Polymers 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000011833 salt mixture Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000003466 welding 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
- H01G9/035—Liquid electrolytes, e.g. impregnating materials
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
The invention relates to the technical field of electrolytic capacitors, in particular to an electrolytic capacitor middle-high voltage electrolyte and a preparation method thereof. A solvent is formed by mixing one or more of ethylene glycol, diglycol and gamma-butyrolactone, and the weight percentage of the solvent is 60-70%; a solute is formed by mixing two or more of semi-esterified carboxylic ammonium salt, alkyl ammonium sebacate, butyl octanedioic acid ammonium, highly branched multi-carbon carboxylic ammonium salt and quaternary ammonium salt and amine, and the weight percentage of the solute is 10-25%; a compound is formed by mixing one or more of phosphoric acid, monobutyl phosphate, ammonium hypophosphite and ammonium dihydrogen phosphate, and the weight percentage of the compound is 0.3-2%; a hydrogen eliminating agent is a nitrocompound, and the weight percentage of the hydrogen eliminating agent is 0.3-1%; the weight percentage of a nano SiO2 glycol solution is 5-10%; and the weight percentage of pure water is 2-3%. The electrolytic capacitor middle-high voltage electrolyte is added with the nano SiO2 glycol solution and the semi-esterified carboxylic ammonium salt or the highly branched multi-carbon carboxylic ammonium salt, and the electrolytic capacitor middle-high voltage electrolyte has the performances of high electric conductance, high flash fire voltage, high ripple wave resistance and long service life at a high temperature.
Description
Technical field
The present invention relates to electrochemical capacitor technical field, refer in particular to a kind of electrochemical capacitor mesohigh electrolyte and preparation method thereof.
Background technology
Electrolysis condenser is one of base components of electronic product, uses extensively, and recent years, along with Quality of electronic products
Improve constantly, the requirement to aluminium electrolutic capacitor is more and more higher.As applied at electric welding equipment, the electricity of the electronic product such as power supply
Container, the ripple current passed through due to capacitor is relatively big, self-heating and working continuously so that capacitor is in high temperature for a long time
Working environment, thus cause electrolysis condenser in use be easier to lost efficacy.
Electrolyte is the negative electrode of aluminium electrolutic capacitor, and the performance of aluminium electrolutic capacitor is had a great impact by its performance.Aluminum
Electrolysis condenser is in use due to the deterioration in characteristics of electrolyte, and is limited to miniaturization and the cost requirement of electrolysis condenser,
Existing aluminium electrolutic capacitor is difficult to reach ripple high temperature resistant, high, long-life effect.
The formula proportion (percentage by weight) of existing electrolyte is as shown in the table (table one).
The electrolyte for aluminum electrolytic capacitor that formula proportion as listed by table one is prepared, its electrolyte characteristic such as following table institute
Show (table two).
Therefore, defect based on above-mentioned existing electrochemical capacitor electrolyte, need existing electrochemical capacitor electrolyte is entered
Row improves.
Summary of the invention
Present invention aims to the deficiencies in the prior art and a kind of electrochemical capacitor mesohigh electrolyte, this electrolysis are provided
Electric capacity mesohigh electrolyte solves existing for existing electrolyte: the defect such as non-refractory, life-span are short.
For achieving the above object, the present invention is achieved by the following technical solutions:
Electrochemical capacitor mesohigh electrolyte,
Solvent is that one or more in ethylene glycol, diethylene glycol, gamma-butyrolacton mix, and percentage by weight is 60-70%；
Solute is half-esterification ammonium carboxylate salt, alkyl ammonium sebacate, butyl ammonium octanedioic acid, highly branched chain many carbon ammonium carboxylate salt and level Four ammonium
Two or more in salt, amine mix, and percentage by weight is 10-25%；
One or more in phosphoric acid, mono phosphoric acid ester butyl ester, ammonium hypophosphite, ammonium dihydrogen phosphate mix, and percentage by weight is
0.3-2%；
The hydrogen agent that disappears is nitro compound, and percentage by weight is 0.3-1%；
Nanosized SiO_2 ethylene glycol solution, percentage by weight is 5-10%；
Pure water 2-3%.
The preparation method of electrochemical capacitor mesohigh electrolyte, comprises the following steps: a) will add pure water, nanometer in ethylene glycol
SiO2, alkyl ammonium sebacate or the mixing of highly branched chain many carbon ammonium carboxylate salts, and it is heated to 90 DEG C；B) molten in aforementioned mixing again
Agent adds organic solute and polyhydric alcohol, and stirs, until each raw material fully dissolve post-heating to 130 DEG C after stop heating；
C) in above-mentioned mixed solution, add phosphorus compound after stopping heating, stir, and waiting temperature declines；D) its temperature is treated
Degree drops to add the hydrogen agent that disappear such as nitro compound when 80 DEG C, and stirs, and finally, treats that it naturally cools to room temperature, just may be used
Prepared medium-high voltage aluminum electrolytic capacitor electrolyte.
The beneficial effects of the present invention is: with the addition of in electrolyte for aluminum electrolytic capacitor have improve oxidation efficiency and
The Nano-meter SiO_2 of high flash over voltage2Ethylene glycol solution and half-esterification ammonium carboxylate salt or side chain many carbon ammonium carboxylate salt, resistance to elevated temperatures
More excellent, the novel electrolyte made has high conductance, high flash over voltage, resistance to high ripple and the performance of high-temperature long life.
Detailed description of the invention
Embodiment 1, percentage by weight is: ethylene glycol 62%, pure water 3%, Nano-meter SiO_22Ethylene glycol solution 13%, alkyl last of the ten Heavenly stems
Diacid ammonium and ammonium salt mixture 20.5%, mono phosphoric acid ester butyl ester 1%, disappear hydrogen agent 0.5%.
Embodiment 2, percentage by weight is: ethylene glycol 68%, pure water 3%, nanosized SiO_2 ethylene glycol solution 5%, half-esterification carboxylic
Acid ammonium salt and ammonium salt mixture 22%, mono phosphoric acid ester butyl ester 1%, disappear hydrogen agent 1%.
The configured electrolyte of the present invention, its characteristic (table three) as shown in the table.
| Characterisitic parameter | Pressure use in 160-250V() and 400V(high frequency low-resistance use) |
| Electrical conductivity (30 DEG C) | 2.8 soil 0.5ms/cm |
| PH value (30 DEG C) | 6.5 soil 1.0 |
| Flash over voltage | ≥460V |
| Moisture content | ≤3% |
The present invention provides the preparation method of a kind of electrolyte, and it comprises the following steps: a) by adding pure water in ethylene glycol, receive
Rice SiO2, alkyl ammonium sebacate or the mixing of highly branched chain many carbon ammonium carboxylate salts, and it is heated to 90 DEG C；B) again in aforementioned mixing
Solvent adds organic solute and polyhydric alcohol, and stirs, until each raw material fully dissolve post-heating to 130 DEG C after stop adding
Heat；C) in above-mentioned mixed solution, add phosphorus compound after stopping heating, stir, and waiting temperature declines；D) treat
It is down at a temperature of it when 80 DEG C add the hydrogen agent that disappear such as nitro compound, and stirs, finally, treat that it naturally cools to room temperature,
Just medium-high voltage aluminum electrolytic capacitor electrolyte can be prepared.
The present invention needs to use the core bag sub-prime of aluminium electrolutic capacitor, and aluminium electrolutic capacitor is mainly by anode foils, electrolysis
Paper, Cathode Foil are impregnated with loading aluminum hull after electrolyte together with being wound on lead terminal, then form with rubber seal.
Lead type core bag sub-prime used in the life test of the electrolyte of the present invention be 10UF250V/8*14 and
10UF400V/8*14.Pressure respectively 365VF and 510VF of anode foils required by sub-prime, it is desirable to Al purity is 99.99%；Electricity
The over dry tightness solving paper is respectively 0.70 soil 0.03g/cm3With 0.80 soil 0.03g/cm3, over dry is quantitatively respectively 49.0g/m2With
32.0g/m2；Its required rubber stopper is IIR/RE, and constituent is mainly the butyl rubber of 38%, the carbon of 15% and 47%
Resin, clay etc.；Its required aluminum hull is the drawing type aluminum hull of Al content 99.63%.
Remove the electrolyte of impregnation formula preparation as listed by (table one) and the present invention with above-mentioned core bag sub-prime after, through group
Dress, aging after carry out the life test test comparison of 105 DEG C and 135 DEG C；Test condition is: 5 DEG C of temperature 20 soil, humidity 45-
65%, test frequency 120HZ.
Life test contrast test one, following table is existing electrolyte (table one) and the formula proportion of electrolyte of the present invention is joined
135 DEG C of high temperature service life performance comparison of the aluminium electrolytic capacitor product of the 10UF250V/8*14 that the electrolyte of system manufactures, following institute
Show (table four).
Life test contrast test two, following table is existing electrolyte (table one) and the formula proportion of electrolyte of the present invention is joined
105 DEG C of high temperature service life performance comparison of the aluminium electrolytic capacitor product of the 10UF400V/8*14 that the electrolyte of system manufactures, following institute
Show (table five).
To sum up two life test comparing results, the electrolyte of the present invention after product experiment of high-temperature load, its high temperature
Functional, the Capacitance Shift Rate decay of product is less, and angle of loss change is little.
Certainly, the embodiment of the above, the simply preferred embodiments of the present invention, and the unrestricted present invention implements model
Enclose, therefore all equivalence changes done according to the structure described in scope of the present invention patent, feature and principle or modification, all should include
In scope of the present invention patent.
Claims (2)
1. electrochemical capacitor mesohigh electrolyte, it is characterised in that:
Solvent is that one or more in ethylene glycol, diethylene glycol, gamma-butyrolacton mix, and percentage by weight is 60-70%；
Solute is half-esterification ammonium carboxylate salt, alkyl ammonium sebacate, butyl ammonium octanedioic acid, highly branched chain many carbon ammonium carboxylate salt and level Four ammonium
Two or more in salt, amine mix, and percentage by weight is 10-25%；
One or more in phosphoric acid, mono phosphoric acid ester butyl ester, ammonium hypophosphite, ammonium dihydrogen phosphate mix, and percentage by weight is
0.3-2%；
The hydrogen agent that disappears is nitro compound, and percentage by weight is 0.3-1%；
Nano-meter SiO_22Ethylene glycol solution, percentage by weight is 5-10%；
Pure water 2-3%.
The preparation method of electrochemical capacitor mesohigh electrolyte the most according to claim 1, it is characterised in that: include following step
Rapid: a) ethylene glycol will to add pure water, Nano-meter SiO_22 , alkyl ammonium sebacate or the mixing of highly branched chain many carbon ammonium carboxylate salts, and
It is heated to 90 DEG C；B) in aforementioned mixed solvent, add organic solute and polyhydric alcohol again, and stir, treat that each raw material is the most molten
Solve post-heating and stop heating after 130 DEG C；C) in above-mentioned mixed solution, add phosphorus compound after stopping heating, be sufficiently stirred for all
Even, and waiting temperature decline；D) it is down to when 80 DEG C add the hydrogen agent that disappear such as nitro compound at a temperature of it, and stirs,
After, treat that it naturally cools to room temperature, just can prepare medium-high voltage aluminum electrolytic capacitor electrolyte.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610381589.3A CN105938759A (en) | 2016-06-01 | 2016-06-01 | Electrolytic capacitor middle-high voltage electrolyte and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610381589.3A CN105938759A (en) | 2016-06-01 | 2016-06-01 | Electrolytic capacitor middle-high voltage electrolyte and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105938759A true CN105938759A (en) | 2016-09-14 |
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|---|---|---|---|
| CN201610381589.3A Pending CN105938759A (en) | 2016-06-01 | 2016-06-01 | Electrolytic capacitor middle-high voltage electrolyte and preparation method thereof |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108257786A (en) * | 2016-12-29 | 2018-07-06 | 深圳新宙邦科技股份有限公司 | A kind of resistance to big ripple electrolyte for capacitor of contracting body |
| CN111640588A (en) * | 2020-06-08 | 2020-09-08 | 广东黄宝石电子科技有限公司 | Preparation method of co-soluble electrolyte for ultrahigh-voltage electrolytic capacitor |
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|---|---|---|---|---|
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108257786A (en) * | 2016-12-29 | 2018-07-06 | 深圳新宙邦科技股份有限公司 | A kind of resistance to big ripple electrolyte for capacitor of contracting body |
| CN108257786B (en) * | 2016-12-29 | 2019-09-10 | 深圳新宙邦科技股份有限公司 | A kind of resistance to big ripple electrolyte for capacitor of contracting body |
| CN111640588A (en) * | 2020-06-08 | 2020-09-08 | 广东黄宝石电子科技有限公司 | Preparation method of co-soluble electrolyte for ultrahigh-voltage electrolytic capacitor |
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