CN113674997B - Electrolyte of long-life liquid capacitor and preparation method thereof - Google Patents
Electrolyte of long-life liquid capacitor and preparation method thereof Download PDFInfo
- Publication number
- CN113674997B CN113674997B CN202110887731.2A CN202110887731A CN113674997B CN 113674997 B CN113674997 B CN 113674997B CN 202110887731 A CN202110887731 A CN 202110887731A CN 113674997 B CN113674997 B CN 113674997B
- Authority
- CN
- China
- Prior art keywords
- electrolyte
- parts
- acid
- solute
- solvent
- 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.)
- Active
Links
- 239000003792 electrolyte Substances 0.000 title claims abstract description 57
- 239000003990 capacitor Substances 0.000 title claims abstract description 48
- 239000007788 liquid Substances 0.000 title claims abstract description 25
- 238000002360 preparation method Methods 0.000 title description 5
- 239000002904 solvent Substances 0.000 claims abstract description 34
- 229920000856 Amylose Polymers 0.000 claims abstract description 16
- 229920002125 Sokalan® Polymers 0.000 claims abstract description 14
- 239000004584 polyacrylic acid Substances 0.000 claims abstract description 14
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000001257 hydrogen Substances 0.000 claims abstract description 13
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 13
- 239000002516 radical scavenger Substances 0.000 claims abstract description 11
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical group OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 30
- 239000002202 Polyethylene glycol Substances 0.000 claims description 8
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 claims description 8
- 229920001223 polyethylene glycol Polymers 0.000 claims description 8
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 7
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 6
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 claims description 6
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 5
- 150000003863 ammonium salts Chemical class 0.000 claims description 5
- HGPLPTQLYAHGDY-UHFFFAOYSA-N 2,9-dimethyldecanedioic acid Chemical compound OC(=O)C(C)CCCCCCC(C)C(O)=O HGPLPTQLYAHGDY-UHFFFAOYSA-N 0.000 claims description 4
- OTLNPYWUJOZPPA-UHFFFAOYSA-N 4-nitrobenzoic acid Chemical compound OC(=O)C1=CC=C([N+]([O-])=O)C=C1 OTLNPYWUJOZPPA-UHFFFAOYSA-N 0.000 claims description 4
- 239000005711 Benzoic acid Substances 0.000 claims description 4
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 4
- 235000010233 benzoic acid Nutrition 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- TVIDDXQYHWJXFK-UHFFFAOYSA-N dodecanedioic acid Chemical compound OC(=O)CCCCCCCCCCC(O)=O TVIDDXQYHWJXFK-UHFFFAOYSA-N 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- BDJRBEYXGGNYIS-UHFFFAOYSA-N nonanedioic acid Chemical compound OC(=O)CCCCCCCC(O)=O BDJRBEYXGGNYIS-UHFFFAOYSA-N 0.000 claims description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 4
- OWCLRJQYKBAMOL-UHFFFAOYSA-N 2-butyloctanedioic acid Chemical compound CCCCC(C(O)=O)CCCCCC(O)=O OWCLRJQYKBAMOL-UHFFFAOYSA-N 0.000 claims description 3
- JKTYGPATCNUWKN-UHFFFAOYSA-N 4-nitrobenzyl alcohol Chemical compound OCC1=CC=C([N+]([O-])=O)C=C1 JKTYGPATCNUWKN-UHFFFAOYSA-N 0.000 claims description 3
- BTJIUGUIPKRLHP-UHFFFAOYSA-N 4-nitrophenol Chemical compound OC1=CC=C([N+]([O-])=O)C=C1 BTJIUGUIPKRLHP-UHFFFAOYSA-N 0.000 claims description 3
- FBPFZTCFMRRESA-KVTDHHQDSA-N D-Mannitol Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-KVTDHHQDSA-N 0.000 claims description 3
- 229930195725 Mannitol Natural products 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000594 mannitol Substances 0.000 claims description 3
- 235000010355 mannitol Nutrition 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- TYKNYXDGHLPJHT-UHFFFAOYSA-N 2,7-dimethyloctanedioic acid Chemical compound OC(=O)C(C)CCCCC(C)C(O)=O TYKNYXDGHLPJHT-UHFFFAOYSA-N 0.000 claims description 2
- XWVFEDFALKHCLK-UHFFFAOYSA-N 2-methylnonanedioic acid Chemical compound OC(=O)C(C)CCCCCCC(O)=O XWVFEDFALKHCLK-UHFFFAOYSA-N 0.000 claims description 2
- BNUHAJGCKIQFGE-UHFFFAOYSA-N Nitroanisol Chemical compound COC1=CC=C([N+]([O-])=O)C=C1 BNUHAJGCKIQFGE-UHFFFAOYSA-N 0.000 claims description 2
- 235000010855 food raising agent Nutrition 0.000 claims description 2
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 claims 1
- 235000011187 glycerol Nutrition 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 229920002472 Starch Polymers 0.000 abstract description 4
- 239000003431 cross linking reagent Substances 0.000 abstract description 4
- 239000008107 starch Substances 0.000 abstract description 4
- 235000019698 starch Nutrition 0.000 abstract description 4
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 abstract description 2
- 230000002378 acidificating effect Effects 0.000 abstract description 2
- 239000003795 chemical substances by application Substances 0.000 abstract description 2
- 239000008103 glucose Substances 0.000 abstract description 2
- 230000007062 hydrolysis Effects 0.000 abstract description 2
- 238000006460 hydrolysis reaction Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 description 9
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 3
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 2
- 239000004327 boric acid Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- QFGCFKJIPBRJGM-UHFFFAOYSA-N 12-[(2-methylpropan-2-yl)oxy]-12-oxododecanoic acid Chemical group CC(C)(C)OC(=O)CCCCCCCCCCC(O)=O QFGCFKJIPBRJGM-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000010407 anodic oxide Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- -1 oxygen ions Chemical class 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007614 solvation 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
-
- 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
- H01G9/145—Liquid electrolytic capacitors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The electrolyte of the long-life liquid capacitor comprises the following components in parts by weight: 40-60 parts of main solvent, 10-25 parts of auxiliary solvent, 8-20 parts of main solute, 4-10 parts of auxiliary solute, 5-15 parts of flash voltage improver, 0.5-3 parts of hydrogen scavenger, 1-5 parts of amylose and 1-2 parts of polyacrylic acid. In the invention, amylose is added into the electrolyte, and the amylose is hydrolyzed under acidic conditions, so that the moisture in the electrolyte is consumed; meanwhile, glucose generated by amylose hydrolysis can be used as a waterproof agent of the electrolyte, and the property of the electrolyte is not influenced; and a small amount of polyacrylic acid is added to serve as a crosslinking agent of starch, and the crosslinking agent and the starch form a starch-polyacrylic acid crosslinked body, so that the pressure resistance of the electrolyte can be improved. Therefore, the electrolyte in the invention can reduce the influence of moisture in the electrolyte on the capacitor, improve the sparking voltage of the electrolyte and greatly prolong the service life of the capacitor.
Description
Technical Field
The invention relates to the field of liquid capacitors, in particular to electrolyte of a long-life liquid capacitor.
Background
The capacitor as an energy storage element has the advantages of high power density, long cycle life, rapid charge and discharge and the like. It has the functions of tuning, filtering, coupling and bypassing in electronic circuits. With the progress of modern science and technology, capacitors are widely applied to a plurality of fields such as electronic products, communication products, automatic control, photoelectric products and the like.
In a conventional high-voltage capacitor, ethylene glycol is used as a solvent and boric acid, an organic acid, or an ammonium salt thereof is used as a main electrolyte in the preparation of an electrolyte. When the esterification reaction occurs between ethylene glycol and boric acid or an organic acid, a large amount of condensed water is generated, resulting in an increase in the moisture content inside the electrolyte system. In addition, during the manufacturing process of the capacitor, the capacitor is exposed to air and can absorb moisture in the air. Therefore, when the capacitor is used in a specific application, moisture in the electrolyte is evaporated into water vapor at a high temperature, and accordingly, the internal pressure of components in the capacitor is increased, and when the amount of internal gas is increased to a certain extent, the capacitor is destroyed, and when the amount of gas is further increased, the expansion and burst of the capacitor may be caused, and there is a certain safety risk.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the electrolyte of the long-life liquid capacitor.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: the electrolyte of the long-life liquid capacitor comprises the following components in parts by weight: 40-60 parts of main solvent, 10-25 parts of auxiliary solvent, 8-20 parts of main solute, 4-10 parts of auxiliary solute, 5-15 parts of flash voltage improver, 0.5-3 parts of hydrogen scavenger, 1-5 parts of amylose and 1-2 parts of polyacrylic acid.
In the electrolyte of the long-life liquid capacitor, the solvent is preferably ethylene glycol.
In the above electrolyte of a long-life liquid capacitor, preferably, the auxiliary solvent is one or more of diethylene glycol, glycerol, methoxypolyethylene glycol, and ethylene glycol monomethyl ether.
Preferably, the main solute is one of 2-methyl azelaic acid, 2,7 dimethyl suberic acid, 2-butyl suberic acid, 2,9-dimethyl sebacic acid, 1,10-dimethyl octadecadioic acid and ammonium salt thereof.
In the electrolyte of the long-life liquid capacitor, preferably, the auxiliary solute is one or more of benzoic acid, azelaic acid, sebacic acid, dodecanedioic acid and ammonium salts thereof.
In the electrolyte of the long-life liquid capacitor, preferably, the sparking voltage raising agent is one or more of mannitol, polyvinyl alcohol and polyethylene glycol.
Preferably, the hydrogen scavenger is one or more of p-nitrobenzoic acid, p-nitroanisole, p-nitrobenzyl alcohol and p-nitrophenol.
The preparation method of the electrolyte of the long-life liquid capacitor comprises the following steps: 1) Heating the main solvent and the auxiliary solvent to 80-100 ℃ in a reaction kettle;
2) Adding a main solute and an auxiliary solute into the solution treated in the step 1), and continuously heating to 140-150 ℃;
3) Adding a sparking voltage improver, a hydrogen scavenger, amylose and polyacrylic acid into the solution treated in the step 2), and stirring to completely dissolve the solution;
4) And naturally cooling to obtain the electrolyte.
Compared with the prior art, the invention has the advantages that: in the invention, amylose is added into the electrolyte, and the amylose is hydrolyzed under acidic conditions, so that the moisture in the electrolyte is consumed; meanwhile, glucose generated by amylose hydrolysis can be used as a waterproof agent of the electrolyte, and the property of the electrolyte is not influenced; and a small amount of polyacrylic acid is added to serve as a crosslinking agent of starch, and the crosslinking agent and the starch form a starch-polyacrylic acid crosslinked body, so that the pressure resistance of the electrolyte can be improved. Therefore, the liquid capacitor prepared by the electrolyte can reduce the influence of moisture in the electrolyte on the capacitor, improve the sparking voltage of the electrolyte and greatly prolong the service life of the capacitor.
Detailed Description
In order to facilitate an understanding of the present invention, the present invention will be described more fully and in detail with reference to the preferred embodiments, but the scope of the present invention is not limited to the specific embodiments described below.
It should be particularly noted that when an element is referred to as being "fixed to, connected to or communicated with" another element, it can be directly fixed to, connected to or communicated with the other element or indirectly fixed to, connected to or communicated with the other element through other intermediate connecting components.
Unless otherwise defined, all terms of art used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present invention.
Example 1
In this embodiment, the electrolyte of the long-life liquid capacitor comprises the following components in parts by weight: 55-60 parts of main solvent, 15-20 parts of auxiliary solvent, 10-15 parts of main solute, 5-8 parts of auxiliary solute, 10 parts of flash voltage improver, 1 part of hydrogen scavenger, 2 parts of amylose and 1 part of polyacrylic acid.
The main solvent is ethylene glycol, the auxiliary solvent is methoxy polyethylene glycol and ethylene glycol methyl ether, the mass ratio of the two is 2:3, the main solute is 2,9-dimethyl sebacic acid, the auxiliary solute is benzoic acid, the flash voltage improver is polyvinyl alcohol, and the hydrogen scavenger is p-nitrobenzoic acid.
In the embodiment, the solvent in the electrolyte consists of the main solvent and the auxiliary solvent, so that the solvent contains a plurality of substances, and the solvent can be matched and used with the mixed solvent, so that the solvation effect can be well enhanced, the solubility of related solutes in the electrolyte can be improved, the volatilization amount of the substances of the electrolyte in actual application, particularly in a high-temperature environment can be reduced, the performance of the capacitor can be well improved, and the service life of the capacitor can be prolonged.
Meanwhile, the main solute in the embodiment is the branched polycarboxylic acid, and the branched polycarboxylic acid is added into the electrolyte of the capacitor, so that the functions of providing oxygen ions and repairing an anodic oxide film at any time can be achieved, and the service life of the capacitor can be further prolonged.
In this embodiment, the preparation method of the electrolyte of the long-life liquid capacitor includes the following steps:
1) Taking 55-60 parts of ethylene glycol in total by weight; taking 15-20 parts of methoxy polyethylene glycol and ethylene glycol monomethyl ether in total, wherein the mass ratio of the methoxy polyethylene glycol to the ethylene glycol methyl ether is 2:3; adding the above materials into a high-temperature high-pressure reaction kettle, and heating to 80-85 deg.C.
2) Taking 10-15 parts by weight of 2,9-dimethyl sebacic acid and 5-8 parts by weight of benzoic acid; adding the above materials into the solution treated in step 1), and heating to 145-150 deg.C.
3) Taking 10 parts of polyvinyl alcohol, 1 part of p-nitrobenzoic acid, 2 parts of amylose and 1 part of polyacrylic acid in parts by weight; adding the obtained substances into the solution treated in the step 2), uniformly stirring and completely dissolving the substances.
4) Stopping heating, and naturally cooling to room temperature to obtain the electrolyte.
In the embodiment, the whole process of preparing the electrolyte is carried out in the high-temperature high-pressure reaction kettle, and the electrolyte is a good closed space, so that the problem that moisture in the air and other substances are doped to influence the property of the electrolyte when the electrolyte is prepared can be avoided. Under the environment of high temperature and high pressure, the solubility of all substances in the solvent can be increased, so that the substances can be better dissolved in the solvent, the dissolving amount of the solute is further increased, and various additives can better play a role.
Example 2
In the embodiment, the electrolyte comprises the following components in parts by weight: 50-55 parts of main solvent, 12-17 parts of auxiliary solvent, 12-16 parts of main solute, 6-9 parts of auxiliary solute, 10 parts of flash voltage improver, 2 parts of hydrogen scavenger, 3 parts of amylose and 1 part of polyacrylic acid.
The main solvent is ethylene glycol, the auxiliary solvent is methoxy polyethylene glycol and ethylene glycol monomethyl ether, the mass ratio of the two is 2:3, the main solute is 2-butyl suberic acid, the auxiliary solute is dodecanedioic acid, the flash fire voltage improver is polyethylene glycol, and the hydrogen eliminator is p-nitrobenzyl alcohol.
In this example, the method for preparing the electrolyte of the long-life liquid capacitor is basically the same as that of example 1 in all steps, and only the added substances and the amounts thereof need to be replaced.
Example 3
In the embodiment, the electrolyte comprises the following components in parts by weight: 45-50 parts of main solvent, 10-15 parts of auxiliary solvent, 14-18 parts of main solute, 7-10 parts of auxiliary solute, 10 parts of flash fire voltage improver, 3 parts of hydrogen scavenger, 5 parts of amylose and 1 part of polyacrylic acid.
The main solvent is ethylene glycol, the auxiliary solvent is methoxy polyethylene glycol and ethylene glycol methyl ether, the mass ratio of the two is 2:3, the main solute is 1,10-dimethyl octadecadioic acid, the auxiliary solute is sebacic acid, the flash voltage improver is mannitol, and the hydrogen eliminator is p-nitrophenol.
In this example, the method for preparing the electrolyte of the long-life liquid capacitor is basically the same as that of example 1 in all steps, and only the added substances and the amounts thereof need to be replaced.
Comparative example
All the steps are the same as the example 1, and the amylose and the polyacrylic acid are replaced by the glycol.
1. Flash voltage comparison
| Comparing items | Flash voltage comparison |
| Example 1 | 518V |
| Example 2 | 525V |
| Example 3 | 536V |
| Comparative example | 485V |
2. Comparison of life
The capacitor with the specification of 400V8.2 10X12 is tested, and after aging, a 105-DEG C high-temperature direct-current load is input.
Through experimental test comparison, the examples 1-3 have certain improvement of the sparking voltage compared with the comparative example. The capacitors of examples 1-3 were operated at a high temperature of 105 c for 5000 hours, and the change in the respective test indexes of the capacitors was relatively small, whereas the capacitors of comparative examples had a significantly reduced Capacity (CAP) and a significantly increased dielectric loss factor (DF). Therefore, compared with the traditional capacitor, the capacitor prepared from the electrolyte obtained in the embodiment has the advantages that the sparking voltage is improved to a certain extent, and the service life is greatly prolonged.
Claims (8)
1. The electrolyte of the long-life liquid capacitor is characterized by comprising the following components in parts by weight: 40-60 parts of main solvent, 10-25 parts of auxiliary solvent, 8-20 parts of main solute, 4-10 parts of auxiliary solute, 5-15 parts of flash voltage improver, 0.5-3 parts of hydrogen scavenger, 1-5 parts of amylose and 1-2 parts of polyacrylic acid.
2. The long life liquid capacitor electrolyte of claim 1 wherein said primary solvent is ethylene glycol.
3. The long life liquid capacitor electrolyte as claimed in claim 1, wherein said auxiliary solvent is one or more of diethylene glycol, glycerin, methoxypolyethylene glycol and ethylene glycol methyl ether.
4. The electrolyte for long life liquid capacitor as claimed in claim 1, wherein said primary solute is one or more of 2-methyl azelaic acid, 2,7 dimethyl suberic acid, 2-butyl suberic acid, 2,9 dimethyl sebacic acid, 1,10 dimethyl octadecadioic acid and ammonium salt thereof.
5. The long life liquid capacitor electrolyte of claim 1 wherein said secondary solute is one or more of benzoic acid, azelaic acid, sebacic acid and dodecanedioic acid and their ammonium salts.
6. The long life liquid capacitor electrolyte of claim 1 wherein said sparking voltage raising agent is one or more of mannitol, polyvinyl alcohol and polyethylene glycol.
7. The long life liquid capacitor electrolyte of claim 1 wherein said hydrogen scavenger is one or more of p-nitrobenzoic acid, p-nitroanisole, p-nitrobenzyl alcohol and p-nitrophenol.
8. A method for preparing an electrolyte for a long life liquid capacitor as claimed in any one of claims 1 to 7, comprising the steps of: 1) Heating the main solvent and the auxiliary solvent to 80-100 ℃ in a reaction kettle;
2) Adding a main solute and an auxiliary solute into the solution treated in the step 1), and continuously heating to 140-150 ℃;
3) Adding a flash fire voltage booster, a hydrogen scavenger, amylose and polyacrylic acid into the solution treated in the step 2), and stirring to completely dissolve the mixture;
4) And naturally cooling to obtain the electrolyte.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110887731.2A CN113674997B (en) | 2021-08-03 | 2021-08-03 | Electrolyte of long-life liquid capacitor and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110887731.2A CN113674997B (en) | 2021-08-03 | 2021-08-03 | Electrolyte of long-life liquid capacitor and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113674997A CN113674997A (en) | 2021-11-19 |
| CN113674997B true CN113674997B (en) | 2023-01-06 |
Family
ID=78541666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110887731.2A Active CN113674997B (en) | 2021-08-03 | 2021-08-03 | Electrolyte of long-life liquid capacitor and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113674997B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114284071A (en) * | 2021-12-29 | 2022-04-05 | 深圳奥凯普电容器有限公司 | Capacitor electrolyte with prolonged service life and preparation method thereof |
| CN114420455A (en) * | 2022-02-28 | 2022-04-29 | 珠海格力新元电子有限公司 | Sparking voltage improver, preparation method thereof and electrolyte |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2662885B2 (en) * | 1988-09-20 | 1997-10-15 | 太陽誘電株式会社 | Manufacturing method of electric double layer capacitor |
| JP2004165214A (en) * | 2002-11-08 | 2004-06-10 | Nippon Chemicon Corp | Electrolytic capacitor |
| JP2005303062A (en) * | 2004-04-13 | 2005-10-27 | Rubycon Corp | Electrolytic capacitor and electrolytic solution for driving the same |
| JP5083653B2 (en) * | 2006-11-14 | 2012-11-28 | 独立行政法人産業技術総合研究所 | Electrolyte body for electrochemical energy conversion device, activation method for solid acid salt electrolyte body using the same, large-capacity capacitor, and fuel cell |
| JP2015095621A (en) * | 2013-11-14 | 2015-05-18 | 三洋化成工業株式会社 | Additive agent of electrolytic solution for aluminum electrolytic capacitors |
| EP3226271B1 (en) * | 2016-04-01 | 2021-03-17 | RISE Research Institutes of Sweden AB | Electrochemical device |
-
2021
- 2021-08-03 CN CN202110887731.2A patent/CN113674997B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113674997A (en) | 2021-11-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113674997B (en) | Electrolyte of long-life liquid capacitor and preparation method thereof | |
| CN109637810B (en) | Preparation method of solid-liquid mixed electrolytic capacitor | |
| CN103943363A (en) | Electrolyte of aluminum electrolytic capacitor, preparation method thereof and aluminum electrolytic capacitor | |
| CN105244165A (en) | Chip type high-voltage aluminum electrolytic capacitor, electrolyte thereof and preparation method of electrolyte | |
| CN108063052B (en) | High-voltage high-temperature-resistant long-life aluminum electrolytic capacitor and manufacturing method thereof | |
| CN108461295A (en) | A kind of high solid-liquid mixing aluminium electrolutic capacitor and preparation method thereof of energizing | |
| CN112927938B (en) | Electrolyte for aluminum electrolytic capacitor, and electronic device | |
| EP2903010B1 (en) | Electrolytic solution for electrolytic capacitor, and electrolytic capacitor | |
| CN111640578A (en) | Working electrolyte of aluminum electrolytic capacitor for LED and preparation method thereof | |
| CN111554513A (en) | Electrolyte for high-temperature-resistant aluminum electrolytic capacitor and aluminum electrolytic capacitor | |
| CN110931256A (en) | Electrolyte for high-voltage-resistant aluminum electrolytic capacitor and preparation method thereof | |
| CN112582180A (en) | Electrolyte for high-hydration-resistance medium-high voltage aluminum electrolytic capacitor and preparation method | |
| WO2024001461A1 (en) | Electrolyte for high-voltage aluminum electrolytic capacitor and high-voltage aluminum electrolytic capacitor | |
| CN115116751B (en) | Aluminum electrolytic capacitor electrolyte, preparation method thereof and aluminum electrolytic capacitor | |
| CN105469991A (en) | High-sparking and long-service-life electrolyte for aluminum electrolytic capacitor and preparation method therefor | |
| TWI718986B (en) | Conductive polymer hybrid electrolytic capacitor | |
| CN107887164B (en) | Working electrolyte of 130 ℃ high-voltage aluminum electrolytic capacitor and preparation method | |
| CN110808169A (en) | Electrolyte for 450-plus-500V aluminum electrolytic capacitor and preparation method thereof | |
| CN111627711A (en) | Working electrolyte of aluminum electrolytic capacitor with voltage lower than 63V | |
| CN113838671A (en) | Electrolyte additive for aluminum electrolytic capacitor and electrolyte | |
| CN207800373U (en) | A kind of high solid-liquid mixing aluminium electrolutic capacitor of energizing | |
| CN107731533B (en) | Working electrolyte of aluminum electrolytic capacitor for 400WV stroboscopic lamp and preparation method thereof | |
| CN107644740B (en) | Working electrolyte of aluminum electrolytic capacitor for 500WV stroboscopic lamp and preparation method thereof | |
| CN107644739B (en) | Working electrolyte of aluminum electrolytic capacitor for 550WV stroboscopic lamp and preparation method thereof | |
| CN111524709A (en) | Working electrolyte for flame-retardant high-voltage aluminum electrolytic capacitor and preparation method thereof |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |