CN105931844A - Medium-and-high-voltage aluminum electrolytic capacitor highly branched electrolyte and production method thereof - Google Patents
Medium-and-high-voltage aluminum electrolytic capacitor highly branched electrolyte and production method thereof Download PDFInfo
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- CN105931844A CN105931844A CN201610253257.7A CN201610253257A CN105931844A CN 105931844 A CN105931844 A CN 105931844A CN 201610253257 A CN201610253257 A CN 201610253257A CN 105931844 A CN105931844 A CN 105931844A
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- highly branched
- branched chain
- electrolyte
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- electrolytic capacitor
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- 239000003990 capacitor Substances 0.000 title claims abstract description 52
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 36
- 239000003792 electrolyte Substances 0.000 title claims abstract description 33
- 238000004519 manufacturing process Methods 0.000 title claims description 19
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 34
- 125000003545 alkoxy group Chemical group 0.000 claims abstract description 11
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 9
- 150000003863 ammonium salts Chemical class 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 18
- 150000001735 carboxylic acids Chemical group 0.000 claims description 14
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 12
- 229910021529 ammonia Inorganic materials 0.000 claims description 9
- 239000012028 Fenton's reagent Substances 0.000 claims description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 6
- -1 alkyl pentenoate Chemical compound 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 150000007519 polyprotic acids Chemical class 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 230000033228 biological regulation Effects 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 3
- FUSUHKVFWTUUBE-UHFFFAOYSA-N buten-2-one Chemical compound CC(=O)C=C FUSUHKVFWTUUBE-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 3
- 239000003054 catalyst Substances 0.000 claims description 3
- 150000001991 dicarboxylic acids Chemical class 0.000 claims description 3
- 150000002148 esters Chemical class 0.000 claims description 3
- 239000003999 initiator Substances 0.000 claims description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 3
- 239000011707 mineral Substances 0.000 claims description 3
- 150000007522 mineralic acids Chemical class 0.000 claims description 3
- 239000003444 phase transfer catalyst Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000007348 radical reaction Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 239000001117 sulphuric acid Substances 0.000 claims description 3
- 235000011149 sulphuric acid Nutrition 0.000 claims description 3
- 238000003786 synthesis reaction Methods 0.000 claims description 3
- 150000003628 tricarboxylic acids Chemical class 0.000 claims description 3
- 239000003960 organic solvent Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 230000032050 esterification Effects 0.000 abstract description 2
- 238000005886 esterification reaction Methods 0.000 abstract description 2
- 230000010287 polarization Effects 0.000 abstract description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 abstract 2
- 150000001732 carboxylic acid derivatives Chemical class 0.000 abstract 1
- 230000003335 steric effect Effects 0.000 abstract 1
- 239000004411 aluminium Substances 0.000 description 12
- 238000005868 electrolysis reaction Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 239000010408 film Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000003985 ceramic capacitor Substances 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000005030 aluminium foil Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 206010003694 Atrophy Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000037444 atrophy Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000005406 washing 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 provides medium-and-high-voltage aluminum electrolytic capacitor highly branched electrolyte comprising 10-40 parts of highly branched ammonium salt carrying alkyl and alkoxy, 10-80 parts of glycol and 1-5 parts of water. According to the medium-and-high-voltage aluminum electrolytic capacitor highly branched electrolyte, the alkyl and the alkoxy are introduced in the aspect of structure, and the solubility of long-chain polybasic carboxylic acid in the glycol is increased due to the space steric effect of the groups on the side chain and the polarization effect of the alkoxy groups so that esterification can be prevented and the high temperature performance can be improved, and electric conductivity is not reduced.
Description
Technical field
The present invention relates to a kind of electrolyte, particularly relate to a kind of medium-high voltage aluminum electrolytic capacitor highly branched chain electrolyte and life thereof
Product method.
Background technology
Capacitor is to use the widest, consumption maximum, and the electronic component do not replaced.It is total that its yield accounts for electronic devices and components
The 40% of amount, and aluminium electrolutic capacitor accounts for three major types capacitor (electrolysis condenser, ceramic capacitor, organic film condenser)
About the 36.8% of yield.
At present, China has become the major country of production of global aluminum electrolysis condenser.According to the data of IT information center, 2004
Year, the yield of China's Aluminum electrolysis condenser reaches 70,000,000,000, accounts for the 40% of whole world like product, and sales volume is more than 10,000,000,000 yuan of people
People's coin.Along with household electrical appliance and transformator, automotive electronics such as the audio-visual products such as PC product, television set, DVD, washing machine, electricity-saving lamps
The fast development of product etc., the market demand of aluminium electrolutic capacitor is by be not less than the speed increment of 5%.
The outstanding feature of aluminium electrolutic capacitor is:
(1) capacitance per unit volume amount is big, is several times to tens times of other capacitor.
(2) rated capacity is big, owing to using winding-structure, it is easy to extended volume, therefore can accomplish several easily
The rated capacitance of hundred the most thousand of microfarads.
(3) there is self-healing action, owing to there is electrolyte at capacitor internal, at work on capacitor anode aluminium foil
Once there is local damage in electrolyte, the OH in electrolyte- Radical ion can arrive rapidly, by damage location under the effect of electric field
The oxide-film reparation blocked and will destroy, makes capacitor recover normal.
(4) working field strength is high, due to anode oxide film in forming process every volt grow about 1.4nm, i.e. anode
Electric field intensity during oxide growth is about 7 × 107V/cm, the electric field intensity under its duty is about 5 × 107V/cm, this
Value is far longer than the working field strength of ceramic capacitor and thin film capacitor.
(5) price advantage, manufactures the advantage of lower cost of aluminium electrolutic capacitor, the especially manufacturing cost ratio of unit capacity
Other type of capacitor has overwhelming dominance.
Just because of above-mentioned advantage, aluminium electrolutic capacitor has obtained extremely being widely applied and developing.Although developing
Cheng Zhong, aluminium electrolutic capacitor runs into from integrated circuit, the improvement of circuitry and answers at high pressure, high frequency, long-life, low capacity
Phase with other capacitor in field (such as multilayer monolith ceramic capacitor, metallic film capacitor, tantalum electrolytic capacitor etc.)
Mutually infiltration and challenge, but due to the advantage of aluminium electrolutic capacitor capacity price ratio, and continuous along with aluminium electrolutic capacitor self
Improving and perfect, the application of miniaturization, chip type and mesohigh Large Copacity aluminium electrolutic capacitor is constantly widened, especially
Coming into operation and the development of all kinds of power supply of electric carrier, aluminium electrolutic capacitor not only will not atrophy, also can have more
Strong vitality and broader development space.
Although domestic capacitor production scale is very big, but high-performance, the middle and high jewelling of the most high temperature resistant (160 DEG C)
Electrolysis condenser still needs to import.Aluminium electrolutic capacitor such as overwhelming majority production outlet electricity-saving lamp industry all uses Japan, Korea Spro
The imported products such as state.
The main cause that domestic aluminium electrolutic capacitor performance is the highest, except manufacturing technology level, anode aluminium foil quality etc. are former
Because of outward, the electrolyte property in capacitor is an important restriction factor.
Electrolyte in electrolysis condenser is most important on the impact of capacitor performance.Which determine the work temperature of capacitor
Degree characteristic, pressure scope and resistance to ripple current size, and capacitor life-span.
The ripple current ability of bearing that importer's inner capacitor product is shown abroad now is low, fissipation factor capacity
The shortcomings such as in use change is fast and the life-span is short, mainly due to the impact of electrolyte so that now in production high request,
During high-voltage electrolysis capacitor, the imported product of Japan, Korea S can only be used.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, it is provided that a kind of height high temperature resistant, high pressure resistant, resistance to
The medium-high voltage aluminum electrolytic capacitor highly branched chain electrolyte of ripple current and life-span length and production method thereof.
For solving above-mentioned technical problem, the technical scheme that the present invention proposes is: a kind of medium-high voltage aluminum electrolytic capacitor is branched
Chain electrolyte, including 10-40 part with highly branched chain ammonium salt, 10-80 part ethylene glycol and the water of 1-5 part of alkyl and alkoxyl.
Above-mentioned medium-high voltage aluminum electrolytic capacitor highly branched chain electrolyte, it is preferred that described highly branched chain ammonium salt includes highly branched chain
Dicarboxylic acids ammonium, the tricarboxylic acid ammonium of highly branched chain, the quaternary carboxylic acid ammonium of highly branched chain and the hexabasic carboxylic acid ammonium of highly branched chain, and it
Side chain on have alkyl or alkoxyl, the carbon number between two carboxyls equal to or more than 18.
Above-mentioned medium-high voltage aluminum electrolytic capacitor highly branched chain method for producing electrolyte, comprises the following steps: 1) with side chain
The synthesis of polybasic ester, make raw material reaction with .DELTA.3-2-butenone and alkyl pentenoate, with inorganic acid as catalyst, at organic solvent
In medium, addition Fenton reagent, as radical reaction initiator, is reacted 2 hours under conditions of-10-10 DEG C, is obtained many
The multi-carboxylate of side chain；
2) formation of highly branched chain polyprotic acid, is hydrolyzed the multi-carboxylate obtained in step 1) and obtains highly branched chain polyprotic acid.
3) preparation of electrolyte, by step 2) in the polybasic carboxylic acid that obtains be dissolved in ethylene glycol, logical ammonia regulation pH exists
Between 6-8, obtain the ethylene glycol solution i.e. electrolyte of polybasic carboxylic acid ammonium salt.
Above-mentioned medium-high voltage aluminum electrolytic capacitor highly branched chain method for producing electrolyte, it is preferred that in step 2) middle addition
Fenton reagent is as phase transfer catalyst.
Above-mentioned medium-high voltage aluminum electrolytic capacitor highly branched chain method for producing electrolyte, it is preferred that be slowly introducing in step 3)
Ammonia, and it is passed through the 10%-20% that amount is gross mass of ammonia.
Above-mentioned medium-high voltage aluminum electrolytic capacitor highly branched chain method for producing electrolyte, it is preferred that the mineral acid in step 1)
Including sulphuric acid, phosphoric acid and Fluohydric acid..
Compared with prior art, it is an advantage of the current invention that: 1, the medium-high voltage aluminum electrolytic capacitor highly branched chain electricity of the present invention
Solve liquid, structurally introduce alkyl and alkoxyl, due to the sterically hindered effect of group and the polarization of alkoxy grp on side chain
Effect, makes long-chain polybasic carboxylic acid dissolubility in ethylene glycol increase, stops esterification thus improve high-temperature behavior, but electrical conductivity is also
Do not decline；2, utilizing the feature of reaction system, control reaction condition and can get the polybasic carboxylic acid of different structure, its ratio adjusts,
Reacting substance chain length is different, it is possible to the side chain alkoxy grp in regulation and control polybasic carboxylic acid number.3, it is directly synthesized required
Chain Diversity carboxylic acid and salt thereof, utilize the synergism of " mixture ", both need not the separation of " mixture ", and can substantially carry again
The heatproof of high capacitance, the electrical property such as pressure, this process route has not yet to see report.Product yield is not less than 90%.4, utilize
Process characteristic, can obviously reduce production cost.5, product structure and polybasic carboxylic acid composition can be regulated and controled by the change of technological parameter
Ratio, the tandem product meeting different performance requirement can be formed.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, required use in embodiment being described below
Accompanying drawing be briefly described, it should be apparent that, below describe in accompanying drawing be only some embodiments of the present invention, for this
From the point of view of the those of ordinary skill of field, on the premise of not paying creative work, it is also possible to obtain other according to these accompanying drawings
Accompanying drawing.
Fig. 1 is the time m-voltage curve of the medium-high voltage aluminum electrolytic capacitor highly branched chain electrolyte obtained in embodiment 1.
Detailed description of the invention
For the ease of understanding the present invention, below in conjunction with preferred embodiment, the present invention is made more comprehensively, describes meticulously,
But protection scope of the present invention is not limited to embodiment in detail below.
It should be strongly noted that when a certain element be described as " be fixed on, be fixed in, be connected to or be communicated in " another
Time on element, it can be directly the most fixing, affixed, connect or connect on another element, it is also possible to be by connecting in the middle of other
Fitting indirectly fixing, affixed, connect or connect on another element.
Unless otherwise defined, the implication that all technical term used hereinafter is generally understood that with those skilled in the art
Identical.Technical term used herein is intended merely to describe the purpose of specific embodiment, is not intended to limit the present invention
Protection domain.
Embodiment 1
A kind of medium-high voltage aluminum electrolytic capacitor highly branched chain electrolyte as shown in Figure 1, including 10 parts with alkyl and alkoxyl
Highly branched chain ammonium salt, 80 parts of ethylene glycol and the water of 3 parts.
In the present embodiment, highly branched chain ammonium salt includes the dicarboxylic acids ammonium of highly branched chain, the tricarboxylic acid ammonium of highly branched chain, highly branched chain
Quaternary carboxylic acid ammonium and the hexabasic carboxylic acid ammonium of highly branched chain, and have alkyl or alkoxyl on their side chain, between two carboxyls
Carbon number equal to or more than 18.
In the present embodiment, medium-high voltage aluminum electrolytic capacitor highly branched chain method for producing electrolyte, comprise the following steps: 1) with
The synthesis of the polybasic ester of side chain, makees raw material reaction with .DELTA.3-2-butenone and alkyl pentenoate, with inorganic acid as catalyst, organic
In solvent medium, addition Fenton reagent, as radical reaction initiator, is reacted 2 hours under conditions of 10 DEG C, is obtained many
The multi-carboxylate of side chain；
2) formation of highly branched chain polyprotic acid, is hydrolyzed the multi-carboxylate obtained in step 1) and obtains highly branched chain polyprotic acid.
3) preparation of electrolyte, by step 2) in the polybasic carboxylic acid that obtains be dissolved in ethylene glycol, logical ammonia regulation pH exists
Between 6-8, obtain the ethylene glycol solution i.e. electrolyte of polybasic carboxylic acid ammonium salt.
In the present embodiment, in step 2) in add Fenton reagent as phase transfer catalyst.
In the present embodiment, step 3) is slowly introducing ammonia, and is passed through amount is gross mass the 10% of ammonia.
In the present embodiment, the mineral acid in step 1) is any one of sulphuric acid, phosphoric acid and Fluohydric acid..
Claims (6)
1. a medium-high voltage aluminum electrolytic capacitor highly branched chain electrolyte, it is characterised in that: include that 10-40 part is with alkyl and alcoxyl
The highly branched chain ammonium salt of base, 10-80 part ethylene glycol and the water of 1-5 part.
Medium-high voltage aluminum electrolytic capacitor highly branched chain electrolyte the most according to claim 1, it is characterised in that: described highly branched chain
Ammonium salt includes the dicarboxylic acids ammonium of highly branched chain, the tricarboxylic acid ammonium of highly branched chain, the quaternary carboxylic acid ammonium of highly branched chain and the six of highly branched chain
Having alkyl or alkoxyl on unit carboxylic acid ammonium, and their side chain, the carbon number between two carboxyls equals to or more than 18.
3. a medium-high voltage aluminum electrolytic capacitor highly branched chain method for producing electrolyte as claimed in claim 1 or 2, its feature exists
In, comprise the following steps: 1) with the synthesis of polybasic ester of side chain, make raw material reaction with .DELTA.3-2-butenone and alkyl pentenoate,
With inorganic acid as catalyst, in organic solvent medium, addition Fenton reagent is as radical reaction initiator, at-10-10
React 2 hours under conditions of DEG C, obtain the multi-carboxylate of highly branched chain；
2) formation of highly branched chain polyprotic acid, is hydrolyzed the multi-carboxylate obtained in step 1) and obtains highly branched chain polyprotic acid；
3) preparation of electrolyte, by step 2) in the polybasic carboxylic acid that obtains be dissolved in ethylene glycol, logical ammonia regulation pH 6-8 it
Between, obtain the ethylene glycol solution i.e. electrolyte of polybasic carboxylic acid ammonium salt.
Medium-high voltage aluminum electrolytic capacitor highly branched chain method for producing electrolyte the most according to claim 3, it is characterised in that:
Step 2) in add Fenton reagent as phase transfer catalyst.
Medium-high voltage aluminum electrolytic capacitor highly branched chain method for producing electrolyte the most according to claim 3, it is characterised in that: step
Rapid 3) it is slowly introducing ammonia in, and is passed through the 10%-20% that amount is gross mass of ammonia.
Medium-high voltage aluminum electrolytic capacitor highly branched chain method for producing electrolyte the most according to claim 3, it is characterised in that: step
Rapid 1) mineral acid in includes sulphuric acid, phosphoric acid and Fluohydric acid..
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610253257.7A CN105931844B (en) | 2016-04-22 | 2016-04-22 | A kind of medium-high voltage aluminum electrolytic capacitor highly branched chain electrolyte and its production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610253257.7A CN105931844B (en) | 2016-04-22 | 2016-04-22 | A kind of medium-high voltage aluminum electrolytic capacitor highly branched chain electrolyte and its production method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105931844A true CN105931844A (en) | 2016-09-07 |
| CN105931844B CN105931844B (en) | 2018-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610253257.7A Expired - Fee Related CN105931844B (en) | 2016-04-22 | 2016-04-22 | A kind of medium-high voltage aluminum electrolytic capacitor highly branched chain electrolyte and its production method |
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| CN (1) | CN105931844B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108666138A (en) * | 2017-03-29 | 2018-10-16 | 东莞东阳光科研发有限公司 | A kind of 650-700V electrolyte for aluminum electrolytic capacitor |
| CN108878151A (en) * | 2017-05-09 | 2018-11-23 | 东莞市东阳光电容器有限公司 | A kind of 700-750V electrolyte for aluminum electrolytic capacitor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1255714A (en) * | 1998-11-26 | 2000-06-07 | 冈村制油株式会社 | Long-chain diacid compsn. and electrolyte made therefrom |
| CN101206955A (en) * | 2007-12-14 | 2008-06-25 | 广州市二轻工业科学技术研究所 | Branched chain polybasic carboxylic acid ammonium salt mixture as well as preparation method and application thereof |
| JP2011219387A (en) * | 2010-04-06 | 2011-11-04 | Kaneka Corp | Method for producing ionic liquid |
| CN102280252A (en) * | 2011-05-31 | 2011-12-14 | 肇庆绿宝石电子有限公司 | Method for reducing flow of leakage current of aluminum electrolytic capacitor |
-
2016
- 2016-04-22 CN CN201610253257.7A patent/CN105931844B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1255714A (en) * | 1998-11-26 | 2000-06-07 | 冈村制油株式会社 | Long-chain diacid compsn. and electrolyte made therefrom |
| CN101206955A (en) * | 2007-12-14 | 2008-06-25 | 广州市二轻工业科学技术研究所 | Branched chain polybasic carboxylic acid ammonium salt mixture as well as preparation method and application thereof |
| JP2011219387A (en) * | 2010-04-06 | 2011-11-04 | Kaneka Corp | Method for producing ionic liquid |
| CN102280252A (en) * | 2011-05-31 | 2011-12-14 | 肇庆绿宝石电子有限公司 | Method for reducing flow of leakage current of aluminum electrolytic capacitor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108666138A (en) * | 2017-03-29 | 2018-10-16 | 东莞东阳光科研发有限公司 | A kind of 650-700V electrolyte for aluminum electrolytic capacitor |
| CN108666138B (en) * | 2017-03-29 | 2020-12-29 | 东莞东阳光科研发有限公司 | Electrolyte for 650-plus 700V aluminum electrolytic capacitor |
| CN108878151A (en) * | 2017-05-09 | 2018-11-23 | 东莞市东阳光电容器有限公司 | A kind of 700-750V electrolyte for aluminum electrolytic capacitor |
| CN108878151B (en) * | 2017-05-09 | 2021-03-26 | 东莞市东阳光电容器有限公司 | 700-750V aluminum electrolytic capacitor electrolyte |
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| CN105931844B (en) | 2018-05-01 |
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