CN108878151B - 700-750V aluminum electrolytic capacitor electrolyte - Google Patents
700-750V aluminum electrolytic capacitor electrolyte Download PDFInfo
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- CN108878151B CN108878151B CN201710319335.3A CN201710319335A CN108878151B CN 108878151 B CN108878151 B CN 108878151B CN 201710319335 A CN201710319335 A CN 201710319335A CN 108878151 B CN108878151 B CN 108878151B
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- 239000003990 capacitor Substances 0.000 title claims abstract description 44
- 239000003792 electrolyte Substances 0.000 title claims abstract description 43
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 20
- 239000002904 solvent Substances 0.000 claims abstract description 22
- 229920000642 polymer Polymers 0.000 claims abstract description 17
- 150000003863 ammonium salts Chemical class 0.000 claims abstract description 14
- 239000000654 additive Substances 0.000 claims abstract description 11
- 230000000996 additive effect Effects 0.000 claims abstract description 9
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 14
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 7
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 claims description 6
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 6
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 6
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 6
- QMVPMAAFGQKVCJ-UHFFFAOYSA-N citronellol Chemical class OCCC(C)CCC=C(C)C QMVPMAAFGQKVCJ-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 5
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 claims description 5
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 5
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims description 5
- BEFDCLMNVWHSGT-UHFFFAOYSA-N ethenylcyclopentane Chemical compound C=CC1CCCC1 BEFDCLMNVWHSGT-UHFFFAOYSA-N 0.000 claims description 5
- 239000003999 initiator Substances 0.000 claims description 5
- 239000004334 sorbic acid Substances 0.000 claims description 5
- 229940075582 sorbic acid Drugs 0.000 claims description 5
- 235000010199 sorbic acid Nutrition 0.000 claims description 5
- JKTYGPATCNUWKN-UHFFFAOYSA-N 4-nitrobenzyl alcohol Chemical compound OCC1=CC=C([N+]([O-])=O)C=C1 JKTYGPATCNUWKN-UHFFFAOYSA-N 0.000 claims description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 claims description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 4
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 claims description 4
- 239000003381 stabilizer Substances 0.000 claims description 4
- QMVPMAAFGQKVCJ-SNVBAGLBSA-N (R)-(+)-citronellol Chemical class OCC[C@H](C)CCC=C(C)C QMVPMAAFGQKVCJ-SNVBAGLBSA-N 0.000 claims description 3
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims description 3
- CFBYEGUGFPZCNF-UHFFFAOYSA-N 2-nitroanisole Chemical compound COC1=CC=CC=C1[N+]([O-])=O CFBYEGUGFPZCNF-UHFFFAOYSA-N 0.000 claims description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 3
- 239000004342 Benzoyl peroxide Substances 0.000 claims description 3
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 claims description 3
- 239000002202 Polyethylene glycol Substances 0.000 claims description 3
- 235000019400 benzoyl peroxide Nutrition 0.000 claims description 3
- JGQFVRIQXUFPAH-UHFFFAOYSA-N beta-citronellol Chemical class OCCC(C)CCCC(C)=C JGQFVRIQXUFPAH-UHFFFAOYSA-N 0.000 claims description 3
- BNMJSBUIDQYHIN-UHFFFAOYSA-N butyl dihydrogen phosphate Chemical class CCCCOP(O)(O)=O BNMJSBUIDQYHIN-UHFFFAOYSA-N 0.000 claims description 3
- 235000000484 citronellol Nutrition 0.000 claims description 3
- UCQFCFPECQILOL-UHFFFAOYSA-N diethyl hydrogen phosphate Chemical class CCOP(O)(=O)OCC UCQFCFPECQILOL-UHFFFAOYSA-N 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 239000012065 filter cake Substances 0.000 claims description 3
- 235000010855 food raising agent Nutrition 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 229910052809 inorganic oxide Inorganic materials 0.000 claims description 3
- 229920001223 polyethylene glycol Polymers 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- ARKIFHPFTHVKDT-UHFFFAOYSA-N 1-(3-nitrophenyl)ethanone Chemical compound CC(=O)C1=CC=CC([N+]([O-])=O)=C1 ARKIFHPFTHVKDT-UHFFFAOYSA-N 0.000 claims description 2
- SBASXUCJHJRPEV-UHFFFAOYSA-N 2-(2-methoxyethoxy)ethanol Chemical compound COCCOCCO SBASXUCJHJRPEV-UHFFFAOYSA-N 0.000 claims description 2
- QOFLTGDAZLWRMJ-UHFFFAOYSA-N 2-methylpropane-1,1-diol Chemical compound CC(C)C(O)O QOFLTGDAZLWRMJ-UHFFFAOYSA-N 0.000 claims description 2
- 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 2
- BTJIUGUIPKRLHP-UHFFFAOYSA-N 4-nitrophenol Chemical compound OC1=CC=C([N+]([O-])=O)C=C1 BTJIUGUIPKRLHP-UHFFFAOYSA-N 0.000 claims description 2
- 239000004114 Ammonium polyphosphate Chemical class 0.000 claims description 2
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Chemical class OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 claims description 2
- FBPFZTCFMRRESA-KVTDHHQDSA-N D-Mannitol Chemical class OC[C@@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-KVTDHHQDSA-N 0.000 claims description 2
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical class OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 claims description 2
- 239000005696 Diammonium phosphate Chemical class 0.000 claims description 2
- 239000004386 Erythritol Substances 0.000 claims description 2
- UNXHWFMMPAWVPI-UHFFFAOYSA-N Erythritol Natural products OCC(O)C(O)CO UNXHWFMMPAWVPI-UHFFFAOYSA-N 0.000 claims description 2
- IMQLKJBTEOYOSI-GPIVLXJGSA-N Inositol-hexakisphosphate Chemical class OP(O)(=O)O[C@H]1[C@H](OP(O)(O)=O)[C@@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@@H]1OP(O)(O)=O IMQLKJBTEOYOSI-GPIVLXJGSA-N 0.000 claims description 2
- 229930195725 Mannitol Natural products 0.000 claims description 2
- IMQLKJBTEOYOSI-UHFFFAOYSA-N Phytic acid Chemical class OP(O)(=O)OC1C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C1OP(O)(O)=O IMQLKJBTEOYOSI-UHFFFAOYSA-N 0.000 claims description 2
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 2
- ZRIUUUJAJJNDSS-UHFFFAOYSA-N ammonium phosphates Chemical compound [NH4+].[NH4+].[NH4+].[O-]P([O-])([O-])=O ZRIUUUJAJJNDSS-UHFFFAOYSA-N 0.000 claims description 2
- 229920001276 ammonium polyphosphate Chemical class 0.000 claims description 2
- 235000019826 ammonium polyphosphate Nutrition 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical class [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 claims description 2
- 229910000388 diammonium phosphate Inorganic materials 0.000 claims description 2
- 235000019838 diammonium phosphate Nutrition 0.000 claims description 2
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 2
- 229940028356 diethylene glycol monobutyl ether Drugs 0.000 claims description 2
- UNXHWFMMPAWVPI-ZXZARUISSA-N erythritol Chemical compound OC[C@H](O)[C@H](O)CO UNXHWFMMPAWVPI-ZXZARUISSA-N 0.000 claims description 2
- 235000019414 erythritol Nutrition 0.000 claims description 2
- 229940009714 erythritol Drugs 0.000 claims description 2
- 239000000194 fatty acid Substances 0.000 claims description 2
- 229930195729 fatty acid Natural products 0.000 claims description 2
- 150000004665 fatty acids Chemical class 0.000 claims description 2
- 230000036571 hydration Effects 0.000 claims description 2
- 238000006703 hydration reaction Methods 0.000 claims description 2
- 239000000594 mannitol Substances 0.000 claims description 2
- 235000010355 mannitol Nutrition 0.000 claims description 2
- ZQMHJBXHRFJKOT-UHFFFAOYSA-N methyl 2-[(1-methoxy-2-methyl-1-oxopropan-2-yl)diazenyl]-2-methylpropanoate Chemical compound COC(=O)C(C)(C)N=NC(C)(C)C(=O)OC ZQMHJBXHRFJKOT-UHFFFAOYSA-N 0.000 claims description 2
- JCGNDDUYTRNOFT-UHFFFAOYSA-N oxolane-2,4-dione Chemical compound O=C1COC(=O)C1 JCGNDDUYTRNOFT-UHFFFAOYSA-N 0.000 claims description 2
- ACVYVLVWPXVTIT-UHFFFAOYSA-N phosphinic acid Chemical compound O[PH2]=O ACVYVLVWPXVTIT-UHFFFAOYSA-N 0.000 claims description 2
- 239000000467 phytic acid Chemical class 0.000 claims description 2
- 235000002949 phytic acid Nutrition 0.000 claims description 2
- 229940068041 phytic acid Drugs 0.000 claims description 2
- 229920000137 polyphosphoric acid Chemical class 0.000 claims description 2
- 229920001451 polypropylene glycol Polymers 0.000 claims description 2
- 239000002516 radical scavenger Substances 0.000 claims description 2
- 235000012239 silicon dioxide Nutrition 0.000 claims description 2
- 239000000600 sorbitol Chemical class 0.000 claims description 2
- 235000010356 sorbitol Nutrition 0.000 claims description 2
- 230000002194 synthesizing effect Effects 0.000 claims description 2
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 claims description 2
- BTVWZWFKMIUSGS-UHFFFAOYSA-N 2-methylpropane-1,2-diol Chemical compound CC(C)(O)CO BTVWZWFKMIUSGS-UHFFFAOYSA-N 0.000 claims 1
- 239000003623 enhancer Substances 0.000 claims 1
- 229920006158 high molecular weight polymer Polymers 0.000 claims 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 6
- 238000012360 testing method Methods 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 8
- 238000011161 development Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 150000007942 carboxylates Chemical class 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 229910052729 chemical element Inorganic materials 0.000 description 1
- 238000002485 combustion reaction 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
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000013101 initial test Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- -1 silicic acid compound Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- WYXIGTJNYDDFFH-UHFFFAOYSA-Q triazanium;borate Chemical compound [NH4+].[NH4+].[NH4+].[O-]B([O-])[O-] WYXIGTJNYDDFFH-UHFFFAOYSA-Q 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/26—Esters containing oxygen in addition to the carboxy oxygen
- C08F220/28—Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/26—Esters containing oxygen in addition to the carboxy oxygen
- C08F220/28—Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety
- C08F220/281—Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety and containing only one oxygen, e.g. furfuryl (meth)acrylate or 2-methoxyethyl (meth)acrylate
Abstract
The invention provides a 700-750V working electrolyte for an aluminum electrolytic capacitor, which comprises the following components: the solvent comprises a solute, a main solvent, a secondary solvent and an additive, wherein the solute is an ammonium salt of a high molecular polymer shown in a formula (I), and the molecular weight distribution range of the solute is 20000-100000. The electrolyte composed of the ammonium salt of the high molecular polymer shown in the formula (I) as the solute can obviously improve the sparking voltage of the capacitor, the obtained capacitor has good conductivity, the capacity change rate, Tan delta, leakage current and appearance change are less after high-temperature long-time test, the high-temperature stability is better, and the use requirement of the 700-750V ultrahigh-voltage aluminum electrolytic capacitor can be met.
Description
Technical Field
The invention relates to the technical field of electrolyte for aluminum electrolytic capacitors, in particular to the technical field of electrolyte for ultrahigh-voltage aluminum electrolytic capacitors, and particularly relates to 700-750V electrolyte for aluminum electrolytic capacitors.
Background
The aluminum electrolytic capacitor has wide application in the fields of filtering, bypass, coupling, resonance, phase shift, energy storage and the like. With the high-speed development of the integration and high-speed processing technology of electronic components, aluminum electrolytic capacitors with the advantages of high voltage resistance, high temperature resistance, long service life, high-frequency ripple current resistance, low impedance, low leakage current and the like are the current development trend.
In an aluminum electrolytic capacitor, an electrolyte has an extremely important influence on the high-temperature life, withstand voltage, impedance, loss factor and other properties of the capacitor. The electrolyte is mainly composed of solute, solvent and additive. Among them, the high temperature performance and sparking voltage of the solute directly affect the high temperature life and withstand voltage of the capacitor. From the initial development of preparing electrolyte by using inorganic acid such as boric acid or ammonium borate and ammonium salt thereof as main solute to the preparation of electrolyte by using linear carboxylic acid and ammonium salt thereof as main solute, the flash voltage of the capacitor is increased with the increase of the number of carbon atoms, but the solubility of the solute is reduced, the conductivity of the electrolyte is also reduced, and the capacitor prepared by using the electrolyte is difficult to meet the requirement of low loss. Meanwhile, in the use process, phenomena such as liquid leakage, corrosion and combustion are easy to occur, chemical reaction of solute occurs at high temperature, and the phenomena cannot meet the requirements of high temperature resistance and long service life of the capacitor and are gradually eliminated. In recent years, the branched carboxylate has higher dissolving capacity and stronger chemical repair capacity compared with the straight-chain carboxylate due to the steric hindrance of a side chain group and the polarization of an alkoxy group, so that the aluminum electrolytic capacitor has the advantages of low effective impedance, large ripple current resistance and the like, and is widely applied.
In order to obtain a high sparking voltage, an extra-high voltage aluminum electrolytic capacitor used at present generally needs to be added with a sparking voltage raising agent such as one or more of polyethylene glycol, ammonium polyacrylate, polyvinyl alcohol phosphate, nano inorganic oxide particles and polyethylene oxide propylene oxide ether besides depending on the performance of a main solute of the electrolyte, and the conductivity of the electrolyte cannot be increased due to non-conductivity of the extra-high voltage aluminum electrolytic capacitor. Meanwhile, as the service life is prolonged, the components of the electrolyte can be chemically changed, so that the moisture content is increased, the conductivity is reduced, the sparking voltage is reduced, the change rate of the loss factor DF of the capacitor is increased, and the like. Since the sparking voltage of the electrolyte is reduced, the electrode foil is easy to strike sparks under high-temperature load, and the oxide film is damaged to cause anode corrosion. As the related parameters of the capacitor deteriorate sharply, eventually causing the capacitor to fail, the reliability of the capacitor cannot adapt to the development trend of the capacitor in the future. At present, in order to meet the requirements of novel equipment, aluminum electrolytic capacitors with working voltage of more than 700V need to be developed to reduce the number of series connection, and meanwhile, more expensive film capacitors can be obtained in some fields to meet the requirements of the market and the novel equipment, while domestic capacitors with voltage of more than 500V are still in an immature stage, and particularly, corresponding high-stability electrolyte needs to be developed firstly when products with working voltage of more than 700V are developed.
Disclosure of Invention
In order to solve the above problems, the present invention provides an electrolyte for 700-750V aluminum electrolytic capacitors, comprising: solute, main solvent, auxiliary solvent and additive, wherein the solute is ammonium salt of high molecular polymer shown in formula (I),
the molecular weight distribution range of the high molecular polymer in the formula (I) is 20000-100000.
In some embodiments, the electrolyte comprises the following components in percentage by mass:
wherein the sum of the content percentages of all the components is equal to 100 percent.
In some embodiments, the primary solvent is selected from one or more of glycerol, diethylene glycol, triethylene glycol, 2-methylpropanediol, and erythritol.
In some embodiments, the secondary solvent is selected from one or more of ethylene glycol, ethylene glycol monobutyl ether, diethylene glycol monomethyl ether, diethylene glycol monobutyl ether.
In some embodiments, the additives include a hydrogen scavenger, a stabilizer, a flash voltage booster, and a hydration inhibitor; the hydrogen eliminating agent is selected from one or more of paranitrobenzyl alcohol, paranitrobenzoic acid, paranitrophenol, m-nitroacetophenone, resorcinol, hydroquinone or o-nitroanisole; the stabilizer is selected from one or more of mannitol, sorbitol, diammonium phosphate, phytic acid, diethyl phosphate, monobutyl phosphate, polyphosphoric acid, citronellol or ammonium polyphosphate salt; the waterproof additive is selected from one or more of phosphoric acid, ammonium phosphate salt, hypophosphorous acid and ammonium salt thereof, and silicic acid compound or aluminum salt thereof; the flash fire voltage raising agent is selected from one or more of polyethylene glycol 400-20000, polypropylene glycol, polymerized fatty acid ammonium and nano inorganic oxide.
In some embodiments, the electrolyte consists of the following raw materials in percentage by mass:
in some embodiments, the electrolyte consists of the following raw materials in percentage by mass:
in some embodiments, the electrolyte consists of the following raw materials in percentage by mass:
in some embodiments, the electrolyte consists of the following raw materials in percentage by mass:
the technical scheme of the invention also discloses a method for synthesizing the high molecular polymer shown in the formula (I), which comprises the following steps:
1) adding butyl acrylate, hydroxyethyl acrylate, sorbic acid, acrylic acid, an initiator and a solvent into a reaction kettle;
2) stirring at room temperature for 0.5-1 h, heating to 75-90 ℃, and continuing to react for 10-48 h;
3) and (3) dropwise adding water with the same volume into the reaction kettle, continuously stirring for 2-4 h, filtering, washing a filter cake with water, and drying to obtain the high-molecular polymer shown in the formula (I).
In some embodiments, the initiator is selected from one of benzoyl peroxide, azobisisobutyronitrile, azobisisoheptonitrile, and dimethyl azobisisobutyrate; preferably, the initiator is benzoyl peroxide.
In some embodiments, the solvent is selected from one of tetrahydrofuran, ethyl acetate, N-dimethylformamide, and anhydrous methanol; preferably, the solvent is N, N-dimethylformamide.
In some embodiments, the molar ratio of butyl acrylate, hydroxyethyl acrylate, sorbic acid, and acrylic acid is from 1:1 to 1.5:0.7 to 1.1:0.4 to 0.9.
Compared with the prior art, the invention has the following technical effects:
the electrolyte of the electrolytic capacitor with the ammonium salt of the high molecular polymer shown in the formula (I) as the solute can obviously improve the sparking voltage of the capacitor, the conductivity of the obtained capacitor is good, and the capacity change rate, Tan delta, leakage current and appearance change of the prepared capacitor are less after high-temperature long-time test, so that the capacitor has good large ripple current resistance and can meet the use requirement of an ultrahigh-voltage aluminum electrolytic capacitor of 700-750V or more.
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. Those 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 referred to as described in "Organic Chemistry", Thomas Sorrell, University Science Books, Sausaltito: 1999, and "March's Advanced Organic Chemistry" by Michael B.Smith and Jerry March, 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.
The term "room temperature" means a temperature range of 25. + -. 5 ℃.
Unless expressly stated to the contrary, the temperatures recited herein are ranges of values. For example, "80 ℃ high temperature" means that the temperature is in the range of 80 ℃. + -. 5 ℃.
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.
Synthesis of ammonium salt of high molecular polymer of formula (I)
(1) To a 1000mL round bottom flask was added butyl acrylate (12.82g), hydroxyethyl acrylate (13.93g), sorbic acid (8.9g), acrylic acid (3.6g), while azobisisobutyronitrile (0.5g) was added, as a solvent, tetrahydrofuran (200 mL);
(2) stirring for 30min at room temperature, uniformly dissolving, heating to 80 ℃, and reacting for 24 h;
(3) after the reaction is finished, adding water with the same volume into the reaction kettle, continuously stirring for 5 hours, filtering, washing a filter cake with pure water, and drying to obtain the high molecular polymer (29.95g) with the formula (I), wherein the yield is 76.3%;
(4) preparing the dried high molecular polymer of the formula (I) into a 20% glycol solution, and introducing ammonia to form a salt;
the electrolyte compositions of the comparative examples and the inventive examples are shown in table 1.
TABLE 1 electrolyte formulations for comparative and example
The capacitor obtained from the above electrolyte was tested, and the initial values are shown in table 2.
TABLE 2 initial test values
| Conductivity (30 ℃, ms/cm) | Sparking voltage (V) | |
| Example 1 | 0.48 | 703 |
| Comparative example 1 | 0.45 | 674 |
| Example 2 | 0.45 | 724 |
| Comparative example 2 | 0.41 | 711 |
| Example 3 | 0.57 | 702 |
| Comparative example 3 | 0.55 | 691 |
| Example 4 | 0.43 | 732 |
| Comparative example 4 | 0.40 | 714 |
The electrolytic capacitors obtained from the electrolytes of the examples and comparative examples of the present invention were stored at a high temperature of 105 ℃ and the changes in capacity, leakage current, etc. are shown in Table 3.
TABLE 3 high temperature storage parameters
As can be seen from the changes of the performance parameters of the capacitors in tables 2 and 3, the electrolytic capacitor obtained by using the working electrolyte of the ammonium salt system of the high molecular polymer shown in the formula (I) as the solute has higher sparking voltage (more than or equal to 702V), better conductivity than the comparative example, less changes of capacity change rate, Tan delta, leakage current and appearance and better high-temperature stability after being tested at high temperature for a long time.
In conclusion, the electrolyte for the ultrahigh-voltage aluminum electrolytic capacitor taking the high molecular polymer as the main solute can remarkably improve the relevant performance of the capacitor and meet the use requirement of the ultrahigh-voltage aluminum electrolytic capacitor of 700-750V.
Claims (9)
1. An electrolyte for 700-750V aluminum electrolytic capacitors, comprising: solute, main solvent, auxiliary solvent and additive, wherein the solute is ammonium salt of high molecular polymer shown in formula (I),
the molecular weight distribution range is 20000-100000.
The mass percentages of the solute, the main solvent, the auxiliary solvent and the additive are as follows:
40% -70% of a main solvent;
5% -25% of solute;
15% -45% of a secondary solvent;
1% -10% of an additive;
wherein the sum of the content percentages of all the components is equal to 100 percent.
2. The electrolyte of claim 1, wherein the main solvent is selected from one or more of glycerol, diethylene glycol, triethylene glycol, 2-methylpropanediol, and erythritol; the auxiliary solvent is one or more selected from ethylene glycol, ethylene glycol monobutyl ether, diethylene glycol monomethyl ether and diethylene glycol monobutyl ether.
3. The electrolyte of claim 1, wherein the additives include a hydrogen scavenger, a stabilizer, a sparking voltage enhancer, and a hydration-resistant additive; the hydrogen eliminating agent is selected from one or more of paranitrobenzyl alcohol, paranitrobenzoic acid, paranitrophenol, m-nitroacetophenone, resorcinol, hydroquinone or o-nitroanisole; the stabilizer is selected from one or more of mannitol, sorbitol, diammonium phosphate, phytic acid, diethyl phosphate, monobutyl phosphate, polyphosphoric acid, citronellol or ammonium polyphosphate salt; the waterproof additive is selected from one or more of phosphoric acid, ammonium phosphate salt, hypophosphorous acid or ammonium salt thereof, and silicic acid or aluminum salt thereof; the flash fire voltage raising agent is selected from one or more of polyethylene glycol 400-20000, polypropylene glycol, polymerized fatty acid ammonium and nano inorganic oxide.
4. The electrolyte according to claim 1, wherein the electrolyte comprises the following components in percentage by mass:
48.9 percent of diethylene glycol;
35% of ethylene glycol;
0.1% of diethyl phosphate;
15% of high molecular polymer ammonium salt shown in the formula (I);
1 percent of p-nitrobenzyl alcohol.
5. The electrolyte according to claim 1, wherein the electrolyte comprises the following components in percentage by mass:
63.9 percent of diethylene glycol;
ethylene glycol monobutyl ether 20 percent;
0.1 percent of phosphoric acid monobutyl ester;
15% of high molecular polymer ammonium salt shown in the formula (I);
1 percent of p-nitrobenzyl alcohol.
6. The electrolyte according to claim 1, wherein the electrolyte comprises the following components in percentage by mass:
48% of 2-methyl propylene glycol;
34% of ethylene glycol;
2% of citronellol;
15% of high molecular polymer ammonium salt shown in the formula (I);
1% of o-nitroanisole.
7. The electrolyte of claim 1, wherein the method for synthesizing the high molecular weight polymer of formula (I) comprises:
1) adding butyl acrylate, hydroxyethyl acrylate, sorbic acid, acrylic acid, an initiator and a solvent into a reaction kettle;
2) stirring at room temperature for 0.5-1 h, heating to 75-90 ℃, and continuing to react for 10-48 h;
3) dropwise adding water with the same volume into the reaction kettle, continuously stirring for 2-4 h, filtering, washing a filter cake with water, and drying to obtain the high molecular polymer shown in the formula (I);
wherein the initiator is selected from one of benzoyl peroxide, azobisisobutyronitrile, azobisisoheptonitrile and dimethyl azobisisobutyrate;
the solvent is one selected from tetrahydrofuran, ethyl acetate, N-dimethylformamide and anhydrous methanol.
8. The electrolyte of claim 7, wherein the molar ratio of butyl acrylate, hydroxyethyl acrylate, sorbic acid, and acrylic acid is 1:1-1.5:0.7-1.1: 0.4-0.9.
9. An aluminum electrolytic capacitor produced by using the electrolyte according to any one of claims 1 to 8.
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| CN110931256A (en) * | 2019-11-29 | 2020-03-27 | 南通瑞达电子材料有限公司 | Electrolyte for high-voltage-resistant aluminum electrolytic capacitor and preparation method thereof |
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