CN107978454B - Additive for electrolyte of ultrahigh-voltage aluminum electrolytic capacitor - Google Patents
Additive for electrolyte of ultrahigh-voltage aluminum electrolytic capacitor Download PDFInfo
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- CN107978454B CN107978454B CN201610933638.XA CN201610933638A CN107978454B CN 107978454 B CN107978454 B CN 107978454B CN 201610933638 A CN201610933638 A CN 201610933638A CN 107978454 B CN107978454 B CN 107978454B
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- diethylene glycol
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- 239000003792 electrolyte Substances 0.000 title claims abstract description 41
- 239000000654 additive Substances 0.000 title claims abstract description 20
- 239000003990 capacitor Substances 0.000 title claims abstract description 20
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 17
- 230000000996 additive effect Effects 0.000 title claims abstract description 15
- 239000002904 solvent Substances 0.000 claims abstract description 12
- YNUUCDHAZGAVEZ-UHFFFAOYSA-N 3-trimethylsilylpropan-1-ol Chemical compound C[Si](C)(C)CCCO YNUUCDHAZGAVEZ-UHFFFAOYSA-N 0.000 claims abstract description 11
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical group OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 21
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 10
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 6
- 239000002202 Polyethylene glycol Substances 0.000 claims description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 6
- 239000004327 boric acid Substances 0.000 claims description 6
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 6
- 229940028356 diethylene glycol monobutyl ether Drugs 0.000 claims description 6
- JCGNDDUYTRNOFT-UHFFFAOYSA-N oxolane-2,4-dione Chemical compound O=C1COC(=O)C1 JCGNDDUYTRNOFT-UHFFFAOYSA-N 0.000 claims description 6
- 229920001223 polyethylene glycol Polymers 0.000 claims description 6
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 6
- SBASXUCJHJRPEV-UHFFFAOYSA-N 2-(2-methoxyethoxy)ethanol Chemical compound COCCOCCO SBASXUCJHJRPEV-UHFFFAOYSA-N 0.000 claims description 4
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 claims description 4
- HVBSAKJJOYLTQU-UHFFFAOYSA-N 4-aminobenzenesulfonic acid Chemical compound NC1=CC=C(S(O)(=O)=O)C=C1 HVBSAKJJOYLTQU-UHFFFAOYSA-N 0.000 claims description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 4
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- KBPLFHHGFOOTCA-UHFFFAOYSA-N caprylic alcohol Natural products CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 claims description 4
- 229960004063 propylene glycol Drugs 0.000 claims description 4
- -1 poly 1, 2-propylene Polymers 0.000 claims description 3
- AXKZIDYFAMKWSA-UHFFFAOYSA-N 1,6-dioxacyclododecane-7,12-dione Chemical compound O=C1CCCCC(=O)OCCCCO1 AXKZIDYFAMKWSA-UHFFFAOYSA-N 0.000 claims description 2
- RRQYJINTUHWNHW-UHFFFAOYSA-N 1-ethoxy-2-(2-ethoxyethoxy)ethane Chemical compound CCOCCOCCOCC RRQYJINTUHWNHW-UHFFFAOYSA-N 0.000 claims description 2
- PAOWIXJMMCDIPE-UHFFFAOYSA-N 2-butyl-4-methylpentanedioic acid Chemical compound CCCCC(C(O)=O)CC(C)C(O)=O PAOWIXJMMCDIPE-UHFFFAOYSA-N 0.000 claims description 2
- QWSYEPDEYHQAGR-UHFFFAOYSA-N 2-hexyl-4-methylpentanedioic acid Chemical compound CCCCCCC(C(O)=O)CC(C)C(O)=O QWSYEPDEYHQAGR-UHFFFAOYSA-N 0.000 claims description 2
- CRWNQZTZTZWPOF-UHFFFAOYSA-N 2-methyl-4-phenylpyridine Chemical compound C1=NC(C)=CC(C=2C=CC=CC=2)=C1 CRWNQZTZTZWPOF-UHFFFAOYSA-N 0.000 claims description 2
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 claims description 2
- GXWAXKQTNPXCNO-UHFFFAOYSA-N CC(C(C(=O)[O-])(C)C)CCC(=O)[O-].[NH4+].[NH4+] Chemical compound CC(C(C(=O)[O-])(C)C)CCC(=O)[O-].[NH4+].[NH4+] GXWAXKQTNPXCNO-UHFFFAOYSA-N 0.000 claims description 2
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 claims description 2
- 125000002777 acetyl group Chemical class [H]C([H])([H])C(*)=O 0.000 claims description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-L adipate(2-) Chemical compound [O-]C(=O)CCCCC([O-])=O WNLRTRBMVRJNCN-UHFFFAOYSA-L 0.000 claims description 2
- JOSWYUNQBRPBDN-UHFFFAOYSA-P ammonium dichromate Chemical compound [NH4+].[NH4+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O JOSWYUNQBRPBDN-UHFFFAOYSA-P 0.000 claims description 2
- 125000005619 boric acid group Chemical group 0.000 claims description 2
- BVPWNLKBGNMZRI-UHFFFAOYSA-N decanedioic acid;2,2-dimethylpropane-1,3-diol Chemical compound OCC(C)(C)CO.OC(=O)CCCCCCCCC(O)=O BVPWNLKBGNMZRI-UHFFFAOYSA-N 0.000 claims description 2
- SPZBYSKKSSLUKN-UHFFFAOYSA-N diazanium;2-butyloctanedioate Chemical compound [NH4+].[NH4+].CCCCC(C([O-])=O)CCCCCC([O-])=O SPZBYSKKSSLUKN-UHFFFAOYSA-N 0.000 claims description 2
- 229940019778 diethylene glycol diethyl ether Drugs 0.000 claims description 2
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 claims description 2
- TVMXDCGIABBOFY-UHFFFAOYSA-N n-Octanol Natural products CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 claims description 2
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 claims description 2
- 229920001451 polypropylene glycol Polymers 0.000 claims description 2
- 229940116351 sebacate Drugs 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 229920002545 silicone oil Polymers 0.000 claims description 2
- 229950000244 sulfanilic acid Drugs 0.000 claims description 2
- 229920002554 vinyl polymer Polymers 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 abstract description 9
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 7
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 7
- 239000001257 hydrogen Substances 0.000 abstract description 7
- 150000001875 compounds Chemical class 0.000 abstract description 5
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 abstract description 4
- 125000003118 aryl group Chemical group 0.000 abstract description 3
- 231100000086 high toxicity Toxicity 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 239000002000 Electrolyte additive Substances 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 125000001183 hydrocarbyl group Chemical group 0.000 abstract description 2
- 230000009545 invasion Effects 0.000 abstract description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 abstract description 2
- 229930195735 unsaturated hydrocarbon Chemical group 0.000 abstract description 2
- YMTFKPVAKZUDPQ-UHFFFAOYSA-N C(CCCCCCC(=O)[O-])(=O)[O-].CC(CC)[NH3+].CC(CC)[NH3+] Chemical compound C(CCCCCCC(=O)[O-])(=O)[O-].CC(CC)[NH3+].CC(CC)[NH3+] YMTFKPVAKZUDPQ-UHFFFAOYSA-N 0.000 description 4
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- AZQWKYJCGOJGHM-UHFFFAOYSA-N 1,4-benzoquinone Chemical compound O=C1C=CC(=O)C=C1 AZQWKYJCGOJGHM-UHFFFAOYSA-N 0.000 description 2
- CFBYEGUGFPZCNF-UHFFFAOYSA-N 2-nitroanisole Chemical compound COC1=CC=CC=C1[N+]([O-])=O CFBYEGUGFPZCNF-UHFFFAOYSA-N 0.000 description 2
- JKTYGPATCNUWKN-UHFFFAOYSA-N 4-nitrobenzyl alcohol Chemical compound OCC1=CC=C([N+]([O-])=O)C=C1 JKTYGPATCNUWKN-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 150000003863 ammonium salts Chemical class 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 2
- BTJIUGUIPKRLHP-UHFFFAOYSA-N 4-nitrophenol Chemical compound OC1=CC=C([N+]([O-])=O)C=C1 BTJIUGUIPKRLHP-UHFFFAOYSA-N 0.000 description 1
- GJYJYFHBOBUTBY-UHFFFAOYSA-N alpha-camphorene Chemical compound CC(C)=CCCC(=C)C1CCC(CCC=C(C)C)=CC1 GJYJYFHBOBUTBY-UHFFFAOYSA-N 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 229910052729 chemical element Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000006356 dehydrogenation reaction Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- ACVYVLVWPXVTIT-UHFFFAOYSA-N phosphinic acid Chemical compound O[PH2]=O ACVYVLVWPXVTIT-UHFFFAOYSA-N 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002516 radical scavenger Substances 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000002195 synergetic effect Effects 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 discloses an electrolyte of an ultrahigh-voltage aluminum electrolytic capacitor, belonging to the technical field of electrolytes. The electrolyte comprises a main solvent, an auxiliary solvent, a main solute, an auxiliary solute and an additive, and is characterized in that the additive contains 3- (trimethylsilyl) -1-propanol. 3- (trimethylsilyl) -1-propanol is used as an electrolyte additive, so that a network-shaped conversion film can be formed on the surface of the aluminum oxide film to inhibit the invasion of water molecules; on the other hand, the electrolyte can be adsorbed on the surface of the anode, so that the strength of the dielectric film is improved, and the sparking voltage and the pressure resistance of the electrolyte are improved. Therefore, the electrolyte can meet the requirements of the ultra-high voltage aluminum electrolytic capacitor on high voltage resistance, high ripple, long service life and the like without adding traditional hydrogen scavengers with high toxicity (such as compounds containing nitro groups, aromatic rings, unsaturated hydrocarbon groups and the like), waterproof agents and the like.
Description
Technical Field
The invention relates to the technical field of electrolyte of an ultrahigh voltage electrolytic capacitor, in particular to an additive for the electrolyte of the ultrahigh voltage aluminum electrolytic capacitor.
Background
The components of the electrolyte of the aluminum electrolytic capacitor are complex, and the number of the related main solutes and additives is more than ten. The additive is less in dosage, but has remarkable effect on improving the electrolyte performance. Due to the increasing demand for aluminum electrolytic capacitors, the variety of additives used in the electrolyte is increasing. The matching of different main solutes and additives has different functions, some matches bring positive synergistic effect to the electrolyte, and some matches can reduce the performance of the electrolyte.
Common additives for electrolyte of high-voltage and ultrahigh-voltage aluminum electrolytic capacitors comprise a hydrogen eliminating agent, a waterproof agent, a flash promoting agent and the like. Wherein, compounds containing nitro, aromatic ring and unsaturated hydroxyl are usually used as dehydrogenation agents, such as resorcinol, p-nitrophenol, p-nitrobenzyl alcohol, o-nitroanisole, p-benzoquinone, o-nitroanisole and the like, and the compounds with the "nitro effect" have strong reducibility, and can effectively reduce the increase of the internal pressure of the capacitor caused by the release of cathode hydrogen when the capacitor works. However, the hydrogen eliminating agent compounds have high toxicity and need large addition amount to meet the requirement of the ultrahigh-voltage aluminum electrolytic capacitor; and the addition amount of the waterproof agent such as phosphoric acid (and ammonium salt thereof), hypophosphorous acid (and ammonium salt thereof), silicic acid compound, aluminum salt and the like added into the high-voltage and ultrahigh-voltage aluminum electrolytic capacitor is large, so that the waterproof effect is not durable, and the stability at high temperature is poor. Therefore, there is a strong need for an additive that can replace conventional hydrogen scavengers and water repellents.
Disclosure of Invention
In view of the above problems, the present invention provides an electrolyte, including a main solvent, an auxiliary solvent, a main solute, an auxiliary solute, and an additive, wherein the additive includes 3- (trimethylsilyl) -1-propanol.
In some embodiments, the primary solvent in the electrolyte is ethylene glycol and the primary solute is boric acid.
In some embodiments, the electrolyte comprises the following components in percentage by weight: 1-10% of 3- (trimethylsilyl) -1-propanol; 40-70% of a main solvent; 5-20% of an auxiliary solvent; 5-20% of a main solute; 1-15% of an auxiliary solute; 5-30% of other additives.
In some embodiments, the auxiliary solvent is selected from one or more of ethylene glycol, diethylene glycol, propylene glycol, glycerol, n-butanol, n-octanol, diethylene glycol monobutyl ether, diethylene glycol dibutyl ether, diethylene glycol monomethyl ether, diethylene glycol methyl ether, diethylene glycol diethyl ether, gamma-butyrolactone, polyethylene glycol, or butyl acetate.
In some embodiments, the co-solute is selected from one or more of ammonium 2-butyloctanedioate, ammonium 2-n-hexyloxalate, ammonium 5, 6-sebacate, ammonium trimethyladipate, 2-methyl-4-n-hexylglutarate, or 2-methyl-4-butylglutarate.
In some embodiments, the additive further comprises one or more of butylene adipate, polyvinyl alcohol, polyvinyl acetal, polyvinyl butyral, poly neopentyl glycol sebacate, poly 1, 2-propylene glycol adipate, polypropylene glycol, sulfanilic acid, ammonium dichromate, silica, or silicone oil.
According to the invention, 3- (trimethylsilyl) -1-propanol is used as an electrolyte additive, so that on one hand, a network-shaped conversion film can be formed on the surface of the aluminum oxide film, the invasion of water molecules is inhibited, and an excellent hydration-prevention effect is achieved; on the other hand, the electrolyte can be adsorbed on the surface of the anode to improve the strength of the dielectric film, so that the sparking voltage and the voltage resistance of the electrolyte are improved. Therefore, the electrolyte can meet the requirements of the ultra-high voltage aluminum electrolytic capacitor on high voltage resistance, high ripple, long service life and the like without adding traditional hydrogen scavengers with high toxicity (such as compounds containing nitro groups, aromatic rings, unsaturated hydrocarbon groups and the like), waterproof agents and the like.
Definition of terms
The invention is intended to cover alternatives, modifications and equivalents, which may be included within the scope of the invention as defined by the appended claims. One skilled in the art will recognize that many methods and materials similar or equivalent to those described herein can be used in the practice of the present invention. The present invention is in no way limited to the methods and materials described herein. In the event that one or more of the incorporated documents, patents, and similar materials differ or contradict this application (including but not limited to defined terminology, application of terminology, described techniques, and the like), this application controls.
It will be further appreciated that certain features of the invention, which are, for clarity, described in the context of separate embodiments, may also be provided in combination in a single embodiment. Conversely, various features of the invention which are, for brevity, described in the context of a single embodiment, may also be provided separately or in any suitable subcombination.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. All patents and publications referred to herein are incorporated by reference in their entirety.
The following definitions, as used herein, should be applied unless otherwise indicated. For the purposes of the present invention, the chemical elements are in accordance with the CAS version of the periodic Table of elements, and the 75 th version of the handbook of chemistry and Physics, 1994. In addition, general principles of Organic Chemistry can be found in the descriptions of "Organic Chemistry", Thomas Sorrell, University Science Books, Sausaltito: 1999, and "March's Advanced Organic Chemistry" by Michael B.Smith and JerryMarch, John Wiley & Sons, New York:2007, the entire contents of which are incorporated herein by reference.
The term "comprising" or "comprises" is open-ended, i.e. comprising what is specified in the present invention, but not excluding other aspects.
Detailed Description
The following are preferred embodiments of the present invention, and the present invention is not limited to the following preferred embodiments. It should be noted that various changes and modifications based on the inventive concept herein will occur to those skilled in the art and are intended to be included within the scope of the present invention. The starting materials used in the examples are all commercially available.
Comparative example 1:
A450V high-voltage aluminum electrolytic capacitor electrolyte comprises the following components in parts by mass:
62 parts of ethylene glycol; 12 parts of diethylene glycol monobutyl ether; 3 parts of polyvinyl alcohol; 2 parts of boric acid; 6 parts of 2-butyl ammonium octanedioate; polyethylene glycol 4008 parts, p-nitrobenzyl alcohol 4.5 parts, and ammonium hypophosphite 2.5 parts. The performance parameter test of the electrolyte is shown in the table I.
Example 1:
the 500V ultrahigh-voltage aluminum electrolytic capacitor electrolyte comprises the following components in parts by mass:
64 parts of ethylene glycol; 12 parts of diethylene glycol monobutyl ether; 2 parts of polyvinyl alcohol; 8 parts of boric acid; 3 parts of 2-butyl ammonium octanedioate; 3 parts of 3- (trimethylsilyl) -1-propanol; and 4008 parts of polyethylene glycol. The performance parameter test of the electrolyte is shown in the table I.
Example 2:
the 600V ultrahigh-voltage aluminum electrolytic capacitor electrolyte comprises the following components in parts by mass:
58 parts of ethylene glycol; 12 parts of diethylene glycol monobutyl ether; 3 parts of polyvinyl alcohol; 9 parts of boric acid; 5 parts of 2-butyl ammonium octanedioate; 4 parts of 3- (trimethylsilyl) -1-propanol; polyethylene glycol 6009 parts. The performance parameter test of the electrolyte is shown in the table I.
Example 3:
the 700V ultrahigh-voltage aluminum electrolytic capacitor electrolyte comprises the following components in parts by mass:
56 parts of ethylene glycol; 12 parts of diethylene glycol monobutyl ether; 3 parts of polyvinyl alcohol; 10 parts of boric acid; 5 parts of 2-butyl ammonium octanedioate; 5 parts of 3- (trimethylsilyl) -1-propanol; 10009 parts of polyethylene glycol. The performance parameter test of the electrolyte is shown in the table I.
Meter-Performance test
From the performance parameters of the electrolyte in the embodiment, the 3- (trimethylsilyl) -1-propanol is used as an additive, so that the traditional hydrogen scavenger and waterproof agent can be completely replaced, the pressure resistance of the electrolyte is effectively improved, and the electrolyte can meet the requirements of 500V and over 500V ultrahigh-voltage aluminum electrolytic capacitors.
Claims (6)
1. An electrolyte for an aluminum electrolytic capacitor, comprising a main solvent, an auxiliary solvent, a main solute, an auxiliary solute and an additive, wherein the additive comprises 3- (trimethylsilyl) -1-propanol; the main solute is boric acid.
2. The electrolyte of claim 1, wherein the primary solvent is ethylene glycol.
3. The electrolyte according to claim 1, wherein the electrolyte comprises the following components in percentage by mass:
wherein the 3- (trimethylsilyl) -1-propanol in the additive accounts for 1-10% of the total mass of the electrolyte.
4. The electrolyte of claim 1, wherein the auxiliary solvent is selected from one or more of diethylene glycol, propylene glycol, glycerol, n-butanol, n-octanol, diethylene glycol monobutyl ether, diethylene glycol dibutyl ether, diethylene glycol monomethyl ether, diethylene glycol methyl ether, diethylene glycol diethyl ether, gamma-butyrolactone, polyethylene glycol, or butyl acetate.
5. The electrolyte of claim 1, wherein the auxiliary solute is selected from one or more of ammonium 2-butyloctanedioate, ammonium 2-n-hexyloxalate, ammonium 5, 6-sebacate, ammonium trimethyladipate, 2-methyl-4-n-hexylglutaric acid, or 2-methyl-4-butylglutaric acid.
6. The electrolyte of claim 1, wherein the additive further comprises one or more of butylene adipate, polyvinyl alcohol, polyvinyl acetal, polyvinyl butyral, poly neopentyl glycol sebacate, poly 1, 2-propylene glycol adipate, polypropylene glycol, sulfanilic acid, ammonium dichromate, silica, or silicone oil.
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| CN201610933638.XA CN107978454B (en) | 2016-10-25 | 2016-10-25 | Additive for electrolyte of ultrahigh-voltage aluminum electrolytic capacitor |
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| CN201610933638.XA CN107978454B (en) | 2016-10-25 | 2016-10-25 | Additive for electrolyte of ultrahigh-voltage aluminum electrolytic capacitor |
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| CN107978454B true CN107978454B (en) | 2020-10-09 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130028995A (en) * | 2011-04-13 | 2013-03-21 | 숭실대학교산학협력단 | Smart window with reversible surface morphology |
| CN105304332A (en) * | 2014-06-11 | 2016-02-03 | 东莞市东阳光电容器有限公司 | 650V aluminum electrolytic capacitor working electrolyte |
| CN106252079A (en) * | 2016-08-31 | 2016-12-21 | 湖南艾华集团股份有限公司 | A kind of electrolyte of 700V high-pressure aluminum electrolytic capacitor |
-
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- 2016-10-25 CN CN201610933638.XA patent/CN107978454B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130028995A (en) * | 2011-04-13 | 2013-03-21 | 숭실대학교산학협력단 | Smart window with reversible surface morphology |
| CN105304332A (en) * | 2014-06-11 | 2016-02-03 | 东莞市东阳光电容器有限公司 | 650V aluminum electrolytic capacitor working electrolyte |
| CN106252079A (en) * | 2016-08-31 | 2016-12-21 | 湖南艾华集团股份有限公司 | A kind of electrolyte of 700V high-pressure aluminum electrolytic capacitor |
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| CN107978454A (en) | 2018-05-01 |
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