CN112382508A - Electrolyte of aluminum electrolytic capacitor, preparation method thereof and aluminum electrolytic capacitor - Google Patents
Electrolyte of aluminum electrolytic capacitor, preparation method thereof and aluminum electrolytic capacitor Download PDFInfo
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- aluminum electrolytic
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- 239000003990 capacitor Substances 0.000 title claims abstract description 123
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 117
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 117
- 239000003792 electrolyte Substances 0.000 title claims abstract description 101
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 92
- 239000002904 solvent Substances 0.000 claims abstract description 75
- 239000003112 inhibitor Substances 0.000 claims abstract description 44
- 230000007797 corrosion Effects 0.000 claims abstract description 43
- 238000005260 corrosion Methods 0.000 claims abstract description 43
- -1 ammonium carboxylate Chemical class 0.000 claims abstract description 36
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000001257 hydrogen Substances 0.000 claims abstract description 28
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 28
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000000654 additive Substances 0.000 claims abstract description 24
- 230000000996 additive effect Effects 0.000 claims abstract description 23
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 51
- 238000001816 cooling Methods 0.000 claims description 50
- 238000003756 stirring Methods 0.000 claims description 48
- 238000010438 heat treatment Methods 0.000 claims description 39
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 32
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 30
- 239000011259 mixed solution Substances 0.000 claims description 25
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 24
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 24
- 238000006243 chemical reaction Methods 0.000 claims description 21
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 claims description 18
- BNUHAJGCKIQFGE-UHFFFAOYSA-N Nitroanisol Chemical compound COC1=CC=C([N+]([O-])=O)C=C1 BNUHAJGCKIQFGE-UHFFFAOYSA-N 0.000 claims description 18
- 239000007789 gas Substances 0.000 claims description 16
- 239000002202 Polyethylene glycol Substances 0.000 claims description 13
- 229920001223 polyethylene glycol Polymers 0.000 claims description 13
- 230000001737 promoting effect Effects 0.000 claims description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 11
- 238000006703 hydration reaction Methods 0.000 claims description 9
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 claims description 8
- 239000000600 sorbitol Substances 0.000 claims description 8
- SATJMZAWJRWBRX-UHFFFAOYSA-N azane;decanedioic acid Chemical compound [NH4+].[NH4+].[O-]C(=O)CCCCCCCCC([O-])=O SATJMZAWJRWBRX-UHFFFAOYSA-N 0.000 claims description 6
- 229940067597 azelate Drugs 0.000 claims description 6
- 150000007942 carboxylates Chemical class 0.000 claims description 6
- SVKRTZCBJZSUJT-UHFFFAOYSA-N diazanium;octanedioate Chemical compound [NH4+].[NH4+].[O-]C(=O)CCCCCCC([O-])=O SVKRTZCBJZSUJT-UHFFFAOYSA-N 0.000 claims description 6
- BDJRBEYXGGNYIS-UHFFFAOYSA-N nonanedioic acid Chemical compound OC(=O)CCCCCCCC(O)=O BDJRBEYXGGNYIS-UHFFFAOYSA-N 0.000 claims description 6
- 229920000642 polymer Polymers 0.000 claims description 6
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 claims description 5
- 235000012239 silicon dioxide Nutrition 0.000 claims description 5
- 239000005543 nano-size silicon particle Substances 0.000 claims description 4
- JKTYGPATCNUWKN-UHFFFAOYSA-N 4-nitrobenzyl alcohol Chemical compound OCC1=CC=C([N+]([O-])=O)C=C1 JKTYGPATCNUWKN-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
- GJYJYFHBOBUTBY-UHFFFAOYSA-N alpha-camphorene Chemical compound CC(C)=CCCC(=C)C1CCC(CCC=C(C)C)=CC1 GJYJYFHBOBUTBY-UHFFFAOYSA-N 0.000 claims description 3
- SPZBYSKKSSLUKN-UHFFFAOYSA-N diazanium;2-butyloctanedioate Chemical compound [NH4+].[NH4+].CCCCC(C([O-])=O)CCCCCC([O-])=O SPZBYSKKSSLUKN-UHFFFAOYSA-N 0.000 claims description 3
- 239000000594 mannitol Substances 0.000 claims description 3
- 235000010355 mannitol Nutrition 0.000 claims description 3
- 229940116351 sebacate Drugs 0.000 claims description 3
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 claims description 3
- LUHJHLQQNOBPFG-UHFFFAOYSA-N C(CCCCCCCCC(CCCCCC)C(=O)[O-])C(=O)[O-].[NH4+].[NH4+] Chemical compound C(CCCCCCCCC(CCCCCC)C(=O)[O-])C(=O)[O-].[NH4+].[NH4+] LUHJHLQQNOBPFG-UHFFFAOYSA-N 0.000 claims 1
- 230000001476 alcoholic effect Effects 0.000 claims 1
- 230000005518 electrochemistry Effects 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 44
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 14
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- OTRAYOBSWCVTIN-UHFFFAOYSA-N OB(O)O.OB(O)O.OB(O)O.OB(O)O.OB(O)O.N.N.N.N.N.N.N.N.N.N.N.N.N.N.N Chemical compound OB(O)O.OB(O)O.OB(O)O.OB(O)O.OB(O)O.N.N.N.N.N.N.N.N.N.N.N.N.N.N.N OTRAYOBSWCVTIN-UHFFFAOYSA-N 0.000 description 6
- 239000004327 boric acid Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 5
- 239000011888 foil Substances 0.000 description 5
- 230000036571 hydration Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- LQNUZADURLCDLV-UHFFFAOYSA-N nitrobenzene Chemical compound [O-][N+](=O)C1=CC=CC=C1 LQNUZADURLCDLV-UHFFFAOYSA-N 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 230000008439 repair process Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 229940068918 polyethylene glycol 400 Drugs 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- NWCWSZOXIYDIOU-UHFFFAOYSA-N 8-butoxy-8-oxooctanoic acid Chemical compound CCCCOC(=O)CCCCCCC(O)=O NWCWSZOXIYDIOU-UHFFFAOYSA-N 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 238000005886 esterification reaction Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 239000002516 radical scavenger Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- MEAHFJBYWLCGDM-UHFFFAOYSA-N 2-pentadecylpropanedioic acid Chemical compound CCCCCCCCCCCCCCCC(C(O)=O)C(O)=O MEAHFJBYWLCGDM-UHFFFAOYSA-N 0.000 description 1
- 239000004254 Ammonium phosphate Substances 0.000 description 1
- POIOOCHMXHKUHV-UHFFFAOYSA-N [nitro-[nitro(phenyl)methoxy]methyl]benzene Chemical compound C=1C=CC=CC=1C([N+](=O)[O-])OC([N+]([O-])=O)C1=CC=CC=C1 POIOOCHMXHKUHV-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 description 1
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 description 1
- 229910000148 ammonium phosphate Inorganic materials 0.000 description 1
- 235000019289 ammonium phosphates Nutrition 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 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 description 1
- 125000005619 boric acid group Chemical group 0.000 description 1
- BNMJSBUIDQYHIN-UHFFFAOYSA-N butyl dihydrogen phosphate Chemical compound CCCCOP(O)(O)=O BNMJSBUIDQYHIN-UHFFFAOYSA-N 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008094 contradictory effect Effects 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
- 238000006356 dehydrogenation reaction Methods 0.000 description 1
- 229910000388 diammonium phosphate Inorganic materials 0.000 description 1
- 235000019838 diammonium phosphate Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 description 1
- 238000003702 image correction Methods 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 150000002632 lipids Chemical class 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 235000019837 monoammonium phosphate Nutrition 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- BNJOQKFENDDGSC-UHFFFAOYSA-N octadecanedioic acid Chemical compound OC(=O)CCCCCCCCCCCCCCCCC(O)=O BNJOQKFENDDGSC-UHFFFAOYSA-N 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- ACVYVLVWPXVTIT-UHFFFAOYSA-N phosphinic acid Chemical compound O[PH2]=O ACVYVLVWPXVTIT-UHFFFAOYSA-N 0.000 description 1
- 229920005646 polycarboxylate Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- ISIJQEHRDSCQIU-UHFFFAOYSA-N tert-butyl 2,7-diazaspiro[4.5]decane-7-carboxylate Chemical compound C1N(C(=O)OC(C)(C)C)CCCC11CNCC1 ISIJQEHRDSCQIU-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
Abstract
The invention discloses an electrolyte of an aluminum electrolytic capacitor, a preparation method thereof and the aluminum electrolytic capacitor, and relates to the technical field of electrochemistry. The electrolyte of the aluminum electrolytic capacitor comprises the following components: the corrosion inhibitor comprises an alcohol solvent, organic ammonium carboxylate, an additive, an auxiliary solvent and a corrosion inhibitor, wherein the additive comprises at least one of a high-molecular lifting agent, a flash ignition lifting agent, a hydrogen eliminating agent, a passivating agent and a waterproof agent. The electrolyte of the aluminum electrolytic capacitor is suitable for an ultrahigh voltage 600V aluminum capacitor, is safe and stable, has a longer service life, and can effectively reduce the cost of the aluminum electrolytic capacitor.
Description
Technical Field
The invention relates to the technical field of electrochemistry, in particular to an electrolyte of an aluminum electrolytic capacitor, a preparation method thereof and the aluminum electrolytic capacitor.
Background
The aluminum electrolytic capacitor is an important basic electronic element, can be used as a filter and a bypass of an electronic circuit, can also play a role in coupling and decoupling, and also plays a special role in certain circuits, such as image correction circuits, phase shift circuits, frequency division circuits, timing circuits, pulse circuits and other special occasions. Due to its strong applicability, aluminum electrolytic capacitors are widely used in a variety of industries and fields, such as electrical appliances, communication devices, medical devices, electronic instruments, automotive devices, entertainment devices, aerospace, and the like. With the development of national infrastructure construction and networking, the aluminum electrolytic capacitor also begins to expand to various novel industrial fields, so that the aluminum electrolytic capacitor has more development space; the working electrolyte of the aluminum electrolytic capacitor is used as the actual cathode of the aluminum electrolytic capacitor, occupies an extremely important position in the aluminum electrolytic capacitor product, influences whether the product can normally work for a long time or not, and has the function of optimizing the electrical performance of the capacitor.
However, the existing working electrolyte for the aluminum electrolytic capacitor is a system of boric acid or ammonium pentaborate and ethylene glycol, wherein the boric acid or ammonium pentaborate often plays a crucial role in the working electrolyte for the high-voltage aluminum electrolytic capacitor. Boric acid or ammonium pentaborate and ethylene glycol, diethylene glycol or polyethylene glycol or polyvinyl alcohol can generate esterification reaction, and more water can be generated after the reaction. The existence of a small amount of water is also beneficial to the dissolution of solute in the working electrolyte and the improvement of the conductivity of the working electrolyte, and the water can generate hydration at high temperature, so that the breakdown failure of the capacitor is easily caused particularly under the condition of ultrahigh voltage.
Disclosure of Invention
The invention mainly aims to provide an electrolyte of an aluminum electrolytic capacitor, a preparation method thereof and the aluminum electrolytic capacitor, and aims to provide the electrolyte of the aluminum electrolytic capacitor which is safe, stable and long in service life.
In order to achieve the purpose, the invention provides an electrolyte of an aluminum electrolytic capacitor, which comprises the following components:
the corrosion inhibitor comprises an alcohol solvent, organic ammonium carboxylate, an additive, an auxiliary solvent and a corrosion inhibitor, wherein the additive comprises at least one of a high-molecular lifting agent, a flash ignition lifting agent, a hydrogen eliminating agent, a passivating agent and a waterproof agent.
Optionally, the mass fractions of the components in the electrolyte of the aluminum electrolytic capacitor are as follows:
26-45 parts of alcohol solvent, 6-35 parts of organic ammonium carboxylate, 0.1-10 parts of additive, 7-28 parts of auxiliary solvent and 0.01-1 part of corrosion inhibitor.
Optionally, the solvent comprises ethylene glycol; and/or the presence of a gas in the gas,
the auxiliary solvent comprises at least one of glycerol, diethylene glycol, gamma-butyrolactone and propylene glycol.
Optionally, the corrosion inhibitor comprises at least one of ammonium hypophosphite and butyl phosphate.
Optionally, the ammonium organic carboxylate comprises at least two of ammonium suberate, ammonium azelate, ammonium sebacate, ammonium dodecate, ammonium 1, 7-sebacate, ammonium 1, 6-dodecate, ammonium 1, 10-hexadecaneate, ammonium 1, 12-octadecanedioate, ammonium 2-butylsuberate, ammonium polymeric carboxylate.
Alternatively,
the polymer lifting agent comprises 400-20000 parts of polyethylene glycol; and/or the presence of a gas in the gas,
the flash fire promoting agent comprises at least one of 400-20000 parts of polyethylene glycol, sorbitol and nano silicon dioxide; and/or the presence of a gas in the gas,
the hydrogen eliminating agent comprises at least one of paranitroanisole and paranitrobenzyl alcohol; and/or the presence of a gas in the gas,
the anti-hydration agent comprises at least one of mannitol and sorbitol.
The invention further provides a preparation method of the electrolyte of the aluminum electrolytic capacitor, which comprises the following steps:
s10, adding an alcohol solvent and an auxiliary solvent into a reaction bottle, heating to 130-140 ℃, and preserving heat for 40-50 min to obtain a mixed solution;
s20, adding organic ammonium carboxylate into the mixed solution, preserving heat for 50-70 min at 120-130 ℃, then cooling to 90-110 ℃, adding a passivating agent and a dehydrogenating agent, continuously cooling to 60-80 ℃, adding a corrosion inhibitor, and cooling to obtain the electrolyte of the aluminum electrolytic capacitor.
The invention further provides another preparation method of the electrolyte of the aluminum electrolytic capacitor, which comprises the following steps:
s30, adding an alcohol solvent and an auxiliary solvent into a reaction bottle, adding a high-molecular lifting agent, heating to 130-140 ℃, and keeping the temperature for 40-50 min under a stirring condition to obtain a mixed solution;
s40, adding organic ammonium carboxylate into the mixed solution, preserving heat for 50-70 min at 120-130 ℃, then adding a flash fire promoting agent, cooling to 90-110 ℃, adding a passivating agent and a hydrogen eliminating agent, cooling to 60-80 ℃ under the stirring condition, finally adding a corrosion inhibitor, stirring and cooling to obtain the electrolyte of the aluminum electrolytic capacitor.
The invention further provides a preparation method of the electrolyte of the aluminum electrolytic capacitor, which comprises the following steps:
s50, adding an alcohol solvent and an auxiliary solvent into a reaction bottle, adding a high-molecular lifting agent, heating to 130-140 ℃, and keeping the temperature for 40-50 min under a stirring condition to obtain a mixed solution;
s60, adding organic ammonium carboxylate into the mixed solution, preserving heat for 50-70 min at 120-130 ℃, then cooling to 60-80 ℃ under the stirring condition, finally adding a corrosion inhibitor, stirring and cooling to obtain the electrolyte of the aluminum electrolytic capacitor.
The invention further provides an aluminum electrolytic capacitor, and the electrolyte of the aluminum electrolytic capacitor comprises the electrolyte of the aluminum electrolytic capacitor.
The technical scheme provided by the invention provides an electrolyte of an aluminum electrolytic capacitor, which comprises an alcohol solvent, organic ammonium carboxylate, an additive, an auxiliary solvent and a corrosion inhibitor, wherein the additive comprises at least one of a polymer lifting agent, a flash promoting agent, a hydrogen eliminating agent, a passivating agent and a waterproof adhesive, boron and salts thereof are not required to be used, and the ion concentration of the electrolyte is increased under the combined action of solute organic ammonium carboxylate, the alcohol solvent, the auxiliary solvent and the additive, so that the electrolyte has good conductivity, the dielectric film is less damaged, the electrolyte has high flash voltage, and in addition, the corrosion inhibitor can absorb hydrogen in the aluminum electrolytic capacitor and repair and protect an oxide film on the surface of an anode foil of the aluminum electrolytic capacitor, thereby prolonging the service life of the electrolyte. The electrolyte of the aluminum electrolytic capacitor is suitable for an ultrahigh voltage 600V aluminum capacitor, is safe and stable, has a longer service life, and can effectively reduce the cost of the aluminum electrolytic capacitor.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other related drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic flow chart of an embodiment of a method for preparing an electrolyte for an aluminum electrolytic capacitor according to the present invention.
The implementation, functional features and advantages of the present invention will be further described with reference to the embodiments and the accompanying drawings.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
It should be noted that those whose specific conditions are not specified in the examples were performed according to the conventional conditions or the conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention. 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 existing working electrolyte for the aluminum electrolytic capacitor is a boric acid or ammonium pentaborate and ethylene glycol system, wherein the boric acid or ammonium pentaborate often plays a vital role in the working electrolyte of the high-voltage aluminum electrolytic capacitor. Boric acid or ammonium pentaborate and ethylene glycol, diethylene glycol or polyethylene glycol or polyvinyl alcohol can generate esterification reaction, and more water can be generated after the reaction. The existence of a small amount of water is also beneficial to the dissolution of solute in the working electrolyte and the improvement of the conductivity of the working electrolyte, and the water can generate hydration at high temperature, so that the breakdown failure of the capacitor is easily caused particularly under the condition of ultrahigh voltage.
In view of this, the invention provides an electrolyte for an aluminum electrolytic capacitor, a preparation method thereof and an aluminum electrolytic capacitor, and aims to provide a safe, stable and long-life electrolyte for an aluminum electrolytic capacitor.
The electrolyte of the aluminum electrolytic capacitor provided by the invention comprises the following components:
the corrosion inhibitor comprises an alcohol solvent, organic ammonium carboxylate, an additive, an auxiliary solvent and a corrosion inhibitor, wherein the additive comprises at least one of a high-molecular lifting agent, a flash ignition lifting agent, a hydrogen eliminating agent, a passivating agent and a waterproof agent.
According to the technical scheme provided by the invention, the electrolyte of the aluminum electrolytic capacitor comprises an alcohol solvent, solute organic ammonium carboxylate, an additive, an auxiliary solvent and a corrosion inhibitor, boron and salts thereof are not required to be used at all, the ion concentration of the electrolyte is increased through the combined action of the solute and the additive, the electrolyte has good conductivity, the damage to a dielectric film is less, the electrolyte has higher flashover voltage, in addition, the corrosion inhibitor can absorb hydrogen in the aluminum electrolytic capacitor, and an oxidation film on the surface of an anode foil of the aluminum electrolytic capacitor is repaired and protected, so that the service life of the electrolyte is prolonged. The electrolyte of the aluminum electrolytic capacitor provided by the invention is safe and stable, is suitable for an ultrahigh voltage 600V aluminum capacitor, has a longer service life, and can effectively reduce the cost of the aluminum electrolytic capacitor.
As a preferred embodiment of the present invention, the electrolyte of the aluminum electrolytic capacitor comprises the following components by mass:
26-45 parts of alcohol solvent, 6-35 parts of organic ammonium carboxylate, 0.1-10 parts of additive, 7-28 parts of auxiliary solvent and 0.01-1 part of corrosion inhibitor. When the proportion of each component is within the range, the obtained electrolyte of the aluminum electrolytic capacitor has higher safety stability and longer service life.
Preferably, the alcohol solvent includes ethylene glycol, and the ethylene glycol serves as a base solvent of the electrolyte, so that the conductivity of the electrolyte of the aluminum electrolytic capacitor can be improved.
In addition, the auxiliary solvent includes at least one of glycerol, diethylene glycol, gamma-butyrolactone, and propylene glycol. The auxiliary solvent is used as the auxiliary of the solvent, and the alcohol and the lipid are adopted, so that the auxiliary solvent can play a good auxiliary role in the action of the alcohol solvent.
The corrosion inhibitor comprises at least one of ammonium hypophosphite and butyl phosphate. The corrosion inhibitor can absorb hydrogen in the aluminum electrolytic capacitor and repair and protect an oxide film on the surface of an anode foil of the aluminum electrolytic capacitor, so that the service life of the electrolyte is prolonged.
The solute preferably comprises an ammonium organic carboxylate. Specifically, the organic carboxylic acid ammonium includes at least two of ammonium suberate, ammonium azelate, ammonium sebacate, ammonium dodecate, ammonium 1, 7-sebacate, ammonium 1, 6-dodecate, ammonium 1, 10-hexadecaneate, ammonium 1, 12-octadecanedioate, ammonium 2-butylsuberate, and ammonium polymeric carboxylate. The working electrolyte prepared by the organic ammonium carboxylate has the remarkable advantages of high conductivity, high flashover voltage, wide working temperature range, large ripple current resistance, long service life and the like, and meets the requirement of environmental protection.
Optionally, the polymer lifting agent comprises polyethylene glycol 400-20000, and aims to improve the molecular weight and stability of the electrolyte of the aluminum electrolytic capacitor.
The sparking improver is a high-molecular compound or a nano compound, specifically comprises at least one of polyethylene glycol 400-20000, sorbitol and nano silicon dioxide, and aims to improve the sparking voltage of the electrolyte of the aluminum electrolytic capacitor and improve the high-voltage resistance of the aluminum electrolytic capacitor.
The hydrogen eliminating agent comprises at least one of paranitroanisole and paranitroanisole, and oxygen required for repairing the anode oxide film of the capacitor is from the electrolysis of water, so that hydrogen is inevitably generated at the cathode. When the hydrogen gas precipitation amount of the capacitor is excessive, the internal pressure of the capacitor is increased, and bottom bulging and even opening of an explosion-proof valve are caused in serious cases. Therefore, the embodiment of the invention adopts at least one of the nitro-anisole and the p-nitrobenzyl alcohol as the hydrogen scavenger, so that the aluminum electrolytic capacitor can be effectively protected.
The selection of the passivating agent is not limited in the invention, and preferably, the passivating agent can be phosphoric acid, phosphorous acid, hypophosphorous acid and salts thereof (ammonium phosphate, ammonium dihydrogen phosphate and diammonium hydrogen phosphate), the passivating agent is added to mainly repair a phosphating film on the outer layer of an oxide film on the electrode foil to achieve the effect of inhibiting hydration, and the complete existence of the phosphating film enables an aluminum oxide film to be insensitive to hydration reaction, so that the aluminum medium oxide film is protected; on the other hand, the passivator is used as an additive, and the ESR value (equivalent series resistance) of the capacitor product can be greatly reduced by reasonably regulating the addition amount of each component and the synergistic effect of multiple components, so that the ripple current resistance is improved, the heat emission of the capacitor product is reduced, and the service life is prolonged.
The hydration inhibitor comprises at least one of mannitol and sorbitol. Mainly inhibits hydration, so that the aluminum oxide film is not sensitive to hydration reaction, thereby protecting the aluminum dielectric oxide film.
The present invention is not limited with respect to the selection of the corrosion inhibitor, and preferably, the corrosion inhibitor may be selected from at least one of monobutyl phosphate and nitrobenzyl ether. The corrosion inhibitor can absorb the hydrogen in the aluminum electrolytic capacitor and repair and protect the oxide film on the surface of the anode foil of the aluminum electrolytic capacitor.
It should be noted that, the above-mentioned alcohol solvent, organic ammonium carboxylate, additive, auxiliary solvent and corrosion inhibitor may be selected to simultaneously or only one, and as a preferred embodiment of the present invention, the above-mentioned alcohol solvent, organic ammonium carboxylate, additive, auxiliary solvent and corrosion inhibitor simultaneously satisfy the above-mentioned conditions, so that, through the optimization of the mixture ratio and the combined action of organic ammonium carboxylate, alcohol solvent, auxiliary solvent and additive, the ion concentration of the electrolyte is increased, so that the electrolyte has good conductivity, the damage to the dielectric film is less, so that the electrolyte has a higher sparking voltage, and further the life of the electrolyte of the aluminum electrolytic capacitor is prolonged.
The present invention further provides a method for preparing the electrolyte of the aluminum electrolytic capacitor, referring to fig. 1, fig. 1 is a schematic flow chart of an embodiment of the method for preparing the electrolyte of the aluminum electrolytic capacitor provided by the present invention, in the preparation method, the additive includes a passivating agent and a hydrogen scavenger, and the method for preparing the electrolyte of the aluminum electrolytic capacitor provided by the present invention includes the following steps:
s10, adding an alcohol solvent and an auxiliary solvent into a reaction bottle, heating to 130-140 ℃, and preserving heat for 40-50 min to obtain a mixed solution;
specifically, the steps include:
s11, adding an alcohol solvent and an auxiliary solvent into a reaction bottle, adding a high-molecular lifting agent, and heating to 135 ℃ to obtain a heating liquid;
and S12, keeping the temperature of the heating liquid for 45min under the stirring condition to obtain a mixed liquid.
Experiments show that the electrolyte of the aluminum electrolytic capacitor has better performance under the conditions of the temperature and the heat preservation time.
S20, adding organic ammonium carboxylate into the mixed solution, preserving heat for 50-70 min at 120-130 ℃, then cooling to 90-110 ℃, adding a passivating agent and a dehydrogenating agent, continuously cooling to 60-80 ℃, adding a corrosion inhibitor, and cooling to obtain the electrolyte of the aluminum electrolytic capacitor.
The method specifically comprises the following steps:
s21, adding organic ammonium carboxylate into the mixed solution, and keeping the temperature at 125 ℃ for 60min to obtain intermediate liquid;
and S22, adding a passivating agent and a dehydrogenation agent into the intermediate liquid, cooling to 70 ℃ under the stirring condition, finally adding a corrosion inhibitor, stirring and cooling to obtain the electrolyte of the aluminum electrolytic capacitor.
The invention further provides another preparation method of the electrolyte of the aluminum electrolytic capacitor, in the preparation method, the additive comprises a high polymer lifting agent, a passivating agent, a hydrogen eliminating agent and a flash promoting agent, and the preparation method of the electrolyte of the aluminum electrolytic capacitor comprises the following steps:
s30, adding an alcohol solvent and an auxiliary solvent into a reaction bottle, adding a high-molecular lifting agent, heating to 130-140 ℃, and keeping the temperature for 40-50 min under a stirring condition to obtain a mixed solution;
s40, adding organic ammonium carboxylate into the mixed solution, preserving heat for 50-70 min at 120-130 ℃, then adding a flash fire promoting agent, cooling to 90-110 ℃, adding a passivating agent and a hydrogen eliminating agent, cooling to 60-80 ℃ under the stirring condition, finally adding a corrosion inhibitor, stirring and cooling to obtain the electrolyte of the aluminum electrolytic capacitor.
The invention further provides a preparation method of the electrolyte of the aluminum electrolytic capacitor, in the preparation method, the additive comprises a high-molecular lifting agent, and the preparation method of the electrolyte of the aluminum electrolytic capacitor comprises the following steps:
s50, adding an alcohol solvent and an auxiliary solvent into a reaction bottle, adding a high-molecular lifting agent, heating to 130-140 ℃, and keeping the temperature for 40-50 min under a stirring condition to obtain a mixed solution;
s60, adding organic ammonium carboxylate into the mixed solution, preserving heat for 50-70 min at 120-130 ℃, then cooling to 60-80 ℃ under the stirring condition, finally adding a corrosion inhibitor, stirring and cooling to obtain the electrolyte of the aluminum electrolytic capacitor.
In the steps, the polymer promoting agent, the flash promoting agent, the passivating agent and the hydrogen eliminating agent are respectively added at different times, so that the molecular weight and the flash voltage are improved, and passivation and hydrogen elimination are realized, thereby ensuring the stability and the service life of the finally obtained electrolyte of the aluminum electrolytic capacitor. In addition, the electrolyte performance of the obtained aluminum electrolytic capacitor is more excellent due to different adding time of different additives.
The invention further provides an aluminum electrolytic capacitor, and the electrolyte of the aluminum electrolytic capacitor comprises the electrolyte of the aluminum electrolytic capacitor. The aluminum electrolytic capacitor uses the electrolyte of the aluminum electrolytic capacitor, so that all the beneficial effects of the electrolyte of the aluminum electrolytic capacitor are achieved, and the details are not repeated herein.
The technical solutions of the present invention are further described in detail below with reference to specific embodiments and the accompanying drawings, it being understood that the following embodiments are merely illustrative of the present invention and are not intended to limit the present invention.
The amounts of the respective raw materials added in examples 1 to 9 were weighed in the following table 1.
TABLE 1 amounts (parts) of components added
Example 1
Adding solvent (ethylene glycol) and auxiliary solvent (glycerol) into a reaction bottle, adding high molecular lifting agent (polyethylene glycol 20000), and heating to 135 deg.C to obtain heating liquid; keeping the temperature of the heating liquid for 45min under the stirring condition to obtain a mixed liquid; adding organic ammonium carboxylate (ammonium suberate and ammonium azelate), maintaining the temperature at 125 deg.C for 60min, adding flash fire promoting agent (polyethylene glycol 400 and nanometer silicon dioxide), and cooling to 100 deg.C to obtain intermediate liquid; adding a passivating agent (phosphoric acid) and a hydrogen eliminating agent (p-nitroanisole) into the intermediate liquid, cooling to 70 ℃ under the stirring condition, finally adding a corrosion inhibitor (p-nitroanisole), stirring and cooling to obtain the electrolyte of the aluminum electrolytic capacitor.
Example 2
Adding a solvent (ethylene glycol) and an auxiliary solvent (diethylene glycol and gamma-butyrolactone) into a reaction bottle, adding a high-molecular lifting agent (polyethylene glycol 400), and heating to 130 ℃ to obtain a heating liquid; keeping the temperature of the heating liquid for 50min under the stirring condition to obtain a mixed liquid; adding organic ammonium carboxylate (ammonium sebacate, ammonium dodecadicarboxylate, 1, 7-ammonium sebacate) into the mixed solution, keeping the temperature at 120 deg.C for 50min, adding flash promoting agent (sorbitol and nano-silica), and cooling to 90 deg.C to obtain intermediate liquid; adding a passivating agent (phosphoric acid) and a hydrogen eliminating agent (p-nitrobenzol) into the intermediate liquid, cooling to 60 ℃ under the stirring condition, finally adding a corrosion inhibitor (p-nitroanisole), stirring and cooling to obtain the electrolyte of the aluminum electrolytic capacitor.
Example 3
Adding a solvent (ethylene glycol) and an auxiliary solvent (glycerol, diethylene glycol, gamma-butyrolactone and propylene glycol) into a reaction bottle, adding a high-molecular lifting agent (polyethylene glycol 10000), and heating to 140 ℃ to obtain a heating liquid; keeping the temperature of the heating liquid for 40min under the stirring condition to obtain a mixed liquid; adding organic ammonium carboxylate (1, 6-ammonium dodecadicarboxylate, 1, 10-ammonium hexadecanedicarboxylate, 1, 12-ammonium octadecadicarboxylate, 2-ammonium butyloctanedioate and polymeric ammonium carboxylate) into the mixed solution, preserving the heat at 130 ℃ for 70min, then adding a flash fire promoting agent (polyethylene glycol 20000, sorbitol and nano silicon dioxide) and cooling to 110 ℃ to obtain an intermediate liquid; adding a passivating agent (phosphoric acid) and a hydrogen eliminating agent (p-nitrobenzol and p-nitroanisole) into the intermediate liquid, cooling to 80 ℃ under the stirring condition, finally adding a corrosion inhibitor (p-nitroanisole), stirring and cooling to obtain the electrolyte of the aluminum electrolytic capacitor.
Example 4
Adding a solvent (ethylene glycol) and an auxiliary solvent (glycerol and propylene glycol) into a reaction bottle, and heating to 135 ℃ to obtain a heating liquid; keeping the temperature of the heating liquid for 40min under the stirring condition to obtain a mixed liquid; adding organic ammonium carboxylate (ammonium suberate, 1, 6-ammonium dodecanedioate, 1, 12-ammonium octadecanedioate, polymeric ammonium carboxylate) into the mixed solution, keeping the temperature at 130 ℃ for 70min, and then cooling to 110 ℃ to obtain intermediate liquid; adding a passivating agent (phosphoric acid) and a hydrogen eliminating agent (p-nitrobenzol and p-nitroanisole) into the intermediate liquid, cooling to 80 ℃ under the stirring condition, finally adding a corrosion inhibitor (p-nitroanisole), stirring and cooling to obtain the electrolyte of the aluminum electrolytic capacitor.
Example 5
Adding a solvent (ethylene glycol) and an auxiliary solvent (diethylene glycol, gamma-butyrolactone and propylene glycol) into a reaction bottle, and heating to 140 ℃ to obtain a heating liquid; keeping the temperature of the heating liquid for 45min under the stirring condition to obtain a mixed liquid; adding organic ammonium carboxylate (1, 12-octadecanedioic acid ammonium, 2-butyl octanedioic acid ammonium, polymeric carboxylic acid ammonium salt) into the mixed solution, keeping the temperature at 125 ℃ for 60min, and then cooling to 100 ℃ to obtain an intermediate liquid; adding a passivating agent (phosphoric acid) and a hydrogen eliminating agent (p-nitroanisole) into the intermediate liquid, cooling to 70 ℃ under the stirring condition, finally adding a corrosion inhibitor (p-nitroanisole), stirring and cooling to obtain the electrolyte of the aluminum electrolytic capacitor.
Example 6
Adding a solvent (ethylene glycol) and an auxiliary solvent (gamma-butyrolactone and propylene glycol) into a reaction bottle, and heating to 130 ℃ to obtain a heating liquid; keeping the temperature of the heating liquid for 45min under the stirring condition to obtain a mixed liquid; adding organic ammonium carboxylate (ammonium hydrogen azelate, ammonium sebacate, ammonium laureate, 1, 7-ammonium sebacate and 1, 6-ammonium laureate) into the mixed solution, preserving the heat at 120 ℃ for 65min, and then cooling to 90 ℃ to obtain intermediate liquid; adding a passivating agent (phosphoric acid) and a hydrogen eliminating agent (p-nitrobenzol) into the intermediate liquid, cooling to 70 ℃ under the stirring condition, finally adding a corrosion inhibitor (p-nitroanisole), stirring and cooling to obtain the electrolyte of the aluminum electrolytic capacitor.
Example 7
Adding solvent (ethylene glycol) and auxiliary solvent (glycerol) into a reaction bottle, adding high molecular lifting agent (polyethylene glycol 20000), and heating to 135 deg.C to obtain heating liquid; keeping the temperature of the heating liquid for 45min under the stirring condition to obtain a mixed liquid; adding organic ammonium carboxylate (ammonium suberate and ammonium azelate), keeping the temperature at 125 deg.C for 60min, cooling to 70 deg.C under stirring, adding corrosion inhibitor (p-nitroanisole), stirring, and cooling to obtain electrolyte of aluminum electrolytic capacitor.
Example 8
Adding a solvent (ethylene glycol) and an auxiliary solvent (diethylene glycol and gamma-butyrolactone) into a reaction bottle, adding a high-molecular lifting agent (polyethylene glycol 400), and heating to 130 ℃ to obtain a heating liquid; keeping the temperature of the heating liquid for 50min under the stirring condition to obtain a mixed liquid; adding organic ammonium carboxylate (ammonium sebacate, ammonium dodecadicarboxylate, 1, 7-ammonium sebacate) into the mixed solution, keeping the temperature at 120 ℃ for 50min, cooling to 60 ℃ under the stirring condition, finally adding a corrosion inhibitor (p-nitroanisole), stirring and cooling to obtain the electrolyte of the aluminum electrolytic capacitor.
Example 9
Adding a solvent (ethylene glycol) and an auxiliary solvent (glycerol, diethylene glycol, gamma-butyrolactone and propylene glycol) into a reaction bottle, adding a high-molecular lifting agent (polyethylene glycol 10000), and heating to 140 ℃ to obtain a heating liquid; keeping the temperature of the heating liquid for 40min under the stirring condition to obtain a mixed liquid; adding organic ammonium carboxylate (1, 6-ammonium dodecadicarboxylate, 1, 10-ammonium hexadecanoate, 1, 12-ammonium octadecadicarboxylate, 2-ammonium butyloctanedioate and ammonium polycarboxylate), keeping the temperature at 130 ℃ for 70min, cooling to 80 ℃ under the condition of stirring, finally adding corrosion inhibitor (p-nitroanisole), stirring and cooling to obtain the electrolyte of the aluminum electrolytic capacitor.
The electrolytes of the aluminum electrolytic capacitors obtained in examples 1 to 9 were measured for viscosity, conductivity, sparking voltage and life to obtain table 2.
TABLE 2 measurement of the Properties of the electrolytes obtained in examples
As can be seen from table 2, the electrolytes of the aluminum electrolytic capacitors prepared in examples 1 to 9 all have a cross-bottom viscosity and a high conductivity, the sparking voltage is above 645V, and the lifetime is above 3000h, which indicates that the electrolyte of the aluminum electrolytic capacitor provided by the invention is suitable for an ultra-high voltage 600V aluminum capacitor, and is safe, stable and long in lifetime.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the present specification and directly/indirectly applied to other related technical fields within the spirit of the present invention are included in the scope of the present invention.
Claims (10)
1. The electrolyte of the aluminum electrolytic capacitor is characterized by comprising the following components:
the corrosion inhibitor comprises an alcohol solvent, organic ammonium carboxylate, an additive, an auxiliary solvent and a corrosion inhibitor, wherein the additive comprises at least one of a high-molecular lifting agent, a flash ignition lifting agent, a hydrogen eliminating agent, a passivating agent and a waterproof agent.
2. The electrolyte of the aluminum electrolytic capacitor as claimed in claim 1, wherein the electrolyte of the aluminum electrolytic capacitor comprises the following components in percentage by mass:
26-45 parts of alcohol solvent, 6-35 parts of organic ammonium carboxylate, 0.1-10 parts of additive, 7-28 parts of auxiliary solvent and 0.01-1 part of corrosion inhibitor.
3. The electrolyte for aluminum electrolytic capacitors as claimed in claim 1, wherein the alcoholic solvent comprises ethylene glycol; and/or the presence of a gas in the gas,
the auxiliary solvent comprises at least one of glycerol, diethylene glycol, gamma-butyrolactone and propylene glycol.
4. The electrolyte for aluminum electrolytic capacitors as claimed in claim 1, wherein the corrosion inhibitor comprises at least one of ammonium hypophosphite and butyl phosphate.
5. The electrolyte for aluminum electrolytic capacitors as claimed in claim 1, wherein the ammonium organic carboxylate comprises at least two of ammonium suberate, ammonium azelate, ammonium sebacate, ammonium dodecadicarboxylate, ammonium 1, 7-sebacate, ammonium 1, 6-dodecadicarboxylate, ammonium 1, 10-hexadecanedicarboxylate, ammonium 1, 12-octadecadicarboxylate, ammonium 2-butyloctanedioate, and ammonium polymeric carboxylate.
6. The electrolyte for aluminum electrolytic capacitors as claimed in claim 1,
the polymer lifting agent comprises 400-20000 parts of polyethylene glycol; and/or the presence of a gas in the gas,
the flash fire promoting agent comprises at least one of 400-20000 parts of polyethylene glycol, sorbitol and nano silicon dioxide; and/or the presence of a gas in the gas,
the hydrogen eliminating agent comprises at least one of paranitroanisole and paranitrobenzyl alcohol; and/or the presence of a gas in the gas,
the anti-hydration agent comprises at least one of mannitol and sorbitol.
7. The preparation method of the electrolyte of the aluminum electrolytic capacitor is characterized by comprising the following steps:
s10, adding an alcohol solvent and an auxiliary solvent into a reaction bottle, heating to 130-140 ℃, and preserving heat for 40-50 min to obtain a mixed solution;
s20, adding organic ammonium carboxylate into the mixed solution, preserving heat for 50-70 min at 120-130 ℃, then cooling to 90-110 ℃, adding a passivating agent and a dehydrogenating agent, continuously cooling to 60-80 ℃, adding a corrosion inhibitor, and cooling to obtain the electrolyte of the aluminum electrolytic capacitor.
8. The preparation method of the electrolyte of the aluminum electrolytic capacitor is characterized by comprising the following steps:
s30, adding an alcohol solvent and an auxiliary solvent into a reaction bottle, adding a high-molecular lifting agent, heating to 130-140 ℃, and keeping the temperature for 40-50 min under a stirring condition to obtain a mixed solution;
s40, adding organic ammonium carboxylate into the mixed solution, preserving heat for 50-70 min at 120-130 ℃, then adding a flash fire promoting agent, cooling to 90-110 ℃, adding a passivating agent and a hydrogen eliminating agent, cooling to 60-80 ℃ under the stirring condition, finally adding a corrosion inhibitor, stirring and cooling to obtain the electrolyte of the aluminum electrolytic capacitor.
9. The preparation method of the electrolyte of the aluminum electrolytic capacitor is characterized by comprising the following steps:
s50, adding an alcohol solvent and an auxiliary solvent into a reaction bottle, adding a high-molecular lifting agent, heating to 130-140 ℃, and keeping the temperature for 40-50 min under a stirring condition to obtain a mixed solution;
s60, adding organic ammonium carboxylate into the mixed solution, preserving heat for 50-70 min at 120-130 ℃, then cooling to 60-80 ℃ under the stirring condition, finally adding a corrosion inhibitor, stirring and cooling to obtain the electrolyte of the aluminum electrolytic capacitor.
10. An aluminum electrolytic capacitor characterized in that the electrolyte of the aluminum electrolytic capacitor comprises the electrolyte of the aluminum electrolytic capacitor according to any one of claims 1 to 6.
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