WO2000033338A1 - Electrolyte pour condensateur electrolytique, et condensateur electrolytique y relatif - Google Patents
Electrolyte pour condensateur electrolytique, et condensateur electrolytique y relatif Download PDFInfo
- Publication number
- WO2000033338A1 WO2000033338A1 PCT/JP1999/006742 JP9906742W WO0033338A1 WO 2000033338 A1 WO2000033338 A1 WO 2000033338A1 JP 9906742 W JP9906742 W JP 9906742W WO 0033338 A1 WO0033338 A1 WO 0033338A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- acid
- electrolytic capacitor
- electrolytic solution
- electrolyte
- water
- Prior art date
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- 239000003990 capacitor Substances 0.000 title claims abstract description 144
- 239000003792 electrolyte Substances 0.000 title claims abstract description 93
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 109
- 239000002904 solvent Substances 0.000 claims abstract description 49
- 150000003839 salts Chemical class 0.000 claims abstract description 33
- 239000000203 mixture Substances 0.000 claims abstract description 32
- 150000001875 compounds Chemical class 0.000 claims abstract description 28
- IQUPABOKLQSFBK-UHFFFAOYSA-N 2-nitrophenol Chemical compound OC1=CC=CC=C1[N+]([O-])=O IQUPABOKLQSFBK-UHFFFAOYSA-N 0.000 claims abstract description 24
- SLAMLWHELXOEJZ-UHFFFAOYSA-N 2-nitrobenzoic acid Chemical compound OC(=O)C1=CC=CC=C1[N+]([O-])=O SLAMLWHELXOEJZ-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000003960 organic solvent Substances 0.000 claims abstract description 16
- 150000002828 nitro derivatives Chemical class 0.000 claims abstract description 12
- VYWYYJYRVSBHJQ-UHFFFAOYSA-N 3,5-dinitrobenzoic acid Chemical compound OC(=O)C1=CC([N+]([O-])=O)=CC([N+]([O-])=O)=C1 VYWYYJYRVSBHJQ-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000008151 electrolyte solution Substances 0.000 claims description 74
- 239000011888 foil Substances 0.000 claims description 55
- 239000002253 acid Substances 0.000 claims description 28
- 150000007522 mineralic acids Chemical class 0.000 claims description 22
- 229910017464 nitrogen compound Inorganic materials 0.000 claims description 19
- 150000002830 nitrogen compounds Chemical class 0.000 claims description 19
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 18
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 16
- 239000000654 additive Substances 0.000 claims description 16
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 claims description 16
- LNOPIUAQISRISI-UHFFFAOYSA-N n'-hydroxy-2-propan-2-ylsulfonylethanimidamide Chemical compound CC(C)S(=O)(=O)CC(N)=NO LNOPIUAQISRISI-UHFFFAOYSA-N 0.000 claims description 15
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 13
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- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 9
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- 239000004327 boric acid Substances 0.000 claims description 8
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- 150000003863 ammonium salts Chemical class 0.000 claims description 6
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- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 claims description 3
- 229960004889 salicylic acid Drugs 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- 235000000346 sugar Nutrition 0.000 claims description 3
- 150000008163 sugars Chemical class 0.000 claims description 3
- 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 claims description 3
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 claims description 2
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 claims description 2
- 159000000001 potassium salts Chemical class 0.000 claims description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims 1
- 239000011575 calcium Substances 0.000 claims 1
- 229910052791 calcium Inorganic materials 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 35
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- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- LJOQGZACKSYWCH-AFHBHXEDSA-N Hydroquinidine Natural products C1=C(OC)C=C2C([C@@H](O)[C@H]3C[C@@H]4CCN3C[C@@H]4CC)=CC=NC2=C1 LJOQGZACKSYWCH-AFHBHXEDSA-N 0.000 description 1
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 1
- 240000000907 Musa textilis Species 0.000 description 1
- FSVCELGFZIQNCK-UHFFFAOYSA-N N,N-bis(2-hydroxyethyl)glycine Chemical compound OCCN(CCO)CC(O)=O FSVCELGFZIQNCK-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 229920000535 Tan II Polymers 0.000 description 1
- 241001504592 Trachurus trachurus Species 0.000 description 1
- HMNDRWDQGZZYIC-UHFFFAOYSA-N [2-(phosphonomethylamino)ethylamino]methylphosphonic acid Chemical compound OP(O)(=O)CNCCNCP(O)(O)=O HMNDRWDQGZZYIC-UHFFFAOYSA-N 0.000 description 1
- HBLQSSASFLSDBS-UHFFFAOYSA-N acetic acid;pentan-2-one Chemical compound CC(O)=O.CCCC(C)=O HBLQSSASFLSDBS-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- WQZGKKKJIJFFOK-PHYPRBDBSA-N alpha-D-galactose Chemical compound OC[C@H]1O[C@H](O)[C@H](O)[C@@H](O)[C@H]1O WQZGKKKJIJFFOK-PHYPRBDBSA-N 0.000 description 1
- FOJJCOHOLNJIHE-UHFFFAOYSA-N aluminum;azane Chemical compound N.[Al+3] FOJJCOHOLNJIHE-UHFFFAOYSA-N 0.000 description 1
- RDOXTESZEPMUJZ-UHFFFAOYSA-N anisole Chemical compound COC1=CC=CC=C1 RDOXTESZEPMUJZ-UHFFFAOYSA-N 0.000 description 1
- 239000010407 anodic oxide Substances 0.000 description 1
- 238000007743 anodising Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 description 1
- 229910001593 boehmite Inorganic materials 0.000 description 1
- 239000007853 buffer solution Substances 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 235000014633 carbohydrates Nutrition 0.000 description 1
- JEUFWFJKIXMEEK-UHFFFAOYSA-N carboxy-[2-(dicarboxyamino)ethyl]carbamic acid Chemical compound OC(=O)N(C(O)=O)CCN(C(O)=O)C(O)=O JEUFWFJKIXMEEK-UHFFFAOYSA-N 0.000 description 1
- 239000003985 ceramic capacitor Substances 0.000 description 1
- 229940100060 combination of electrolytes Drugs 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- NAUHBXFHKWSIPS-UHFFFAOYSA-H dialuminum;butanedioate Chemical compound [Al+3].[Al+3].[O-]C(=O)CCC([O-])=O.[O-]C(=O)CCC([O-])=O.[O-]C(=O)CCC([O-])=O NAUHBXFHKWSIPS-UHFFFAOYSA-H 0.000 description 1
- OKUGAOMPLZNWRT-UHFFFAOYSA-N diazanium;pentanedioate Chemical compound [NH4+].[NH4+].[O-]C(=O)CCCC([O-])=O OKUGAOMPLZNWRT-UHFFFAOYSA-N 0.000 description 1
- 150000001991 dicarboxylic acids Chemical class 0.000 description 1
- HPNMFZURTQLUMO-UHFFFAOYSA-N diethylamine Chemical compound CCNCC HPNMFZURTQLUMO-UHFFFAOYSA-N 0.000 description 1
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 1
- 150000004683 dihydrates Chemical class 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000011532 electronic conductor Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002085 enols Chemical class 0.000 description 1
- WMUQZSGONLGLCA-UHFFFAOYSA-N ethene prop-1-ene urea Chemical compound NC(=O)N.C=CC.C=C WMUQZSGONLGLCA-UHFFFAOYSA-N 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229960000811 hydroquinidine Drugs 0.000 description 1
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 125000006289 hydroxybenzyl group Chemical group 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 150000002596 lactones Chemical class 0.000 description 1
- 239000006166 lysate Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000002763 monocarboxylic acids Chemical class 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- 229940073020 nitrol Drugs 0.000 description 1
- 239000005486 organic electrolyte Substances 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 description 1
- 239000012466 permeate Substances 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
- 229920000642 polymer Polymers 0.000 description 1
- 239000005518 polymer electrolyte Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000011115 styrene butadiene Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- IIACRCGMVDHOTQ-UHFFFAOYSA-M sulfamate Chemical compound NS([O-])(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-M 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- ILJSQTXMGCGYMG-UHFFFAOYSA-N triacetic acid Chemical compound CC(=O)CC(=O)CC(O)=O ILJSQTXMGCGYMG-UHFFFAOYSA-N 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/022—Electrolytes; Absorbents
Definitions
- the present invention relates to an electrolytic capacitor. More specifically, the present invention relates to an electrolytic solution for driving an electrolytic capacitor having low impedance, excellent low-temperature characteristics, and excellent life characteristics, and an electrolytic capacitor using the same, particularly an aluminum electrolytic solution. Concerning capacitors.
- Capacitors are one of the common electrical components, and are widely used in various electrical and electronic products, mainly for power circuits and noise filters for digital circuits. . Capacitors are broadly divided into electrolytic capacitors and other capacitors (ceramic capacitors, finolem capacitors, etc.).
- electrolytic capacitors there are various types of electrolytic capacitors currently used, such as aluminum electrolytic capacitors and wet tantalum electrolytic capacitors, for example. It should be noted that an aluminum electrolytic capacitor that can be expected to have particularly excellent effects in the present invention is an aluminum electrolytic capacitor. Therefore, the present invention will be described below with reference to this type of electrolytic capacitor, and will be referred to as an “electrolytic capacitor”. In this case, unless otherwise specified, it shall refer to an aluminum electrolytic capacitor.
- Conventional aluminum electrolytic capacitors typically include a high-purity aluminum foil that is etched to increase its surface area, and then anodized on the surface of the aluminum foil to form a coated anode foil. It can be manufactured by using a cathode foil whose surface has only been etched. Wear. Next, the obtained anode foil and cathode foil were arranged to face each other, and furthermore, the element was wound with a separator (separation paper) interposed between those foils to form a device. Impregnate the wound element with electrolyte. The element impregnated with the electrolytic solution is housed in a case (generally made of aluminum), and sealed with an elastic sealing body to complete the electrolytic capacitor. There are things other than structures.
- the characteristics of the electrolytic solution play a major factor in determining the performance of the electrolytic capacitor.
- anode foils or cathode foils with high etch sig- nal magnification have been used, and since the resistivity of the capacitor body has increased, it is used for this purpose.
- the electrolyte a highly conductive electrolyte having a small resistivity (resistivity) is always required.
- the electrolytic solution of conventional electrolytic capacitors is a solvent composed of ethylene glycol (EG) as the main solvent and water to about 10% by weight, and adipic acid as the electrolyte.
- EG ethylene glycol
- a solution in which a carboxylic acid such as benzoic acid or an ammonium salt thereof is dissolved is generally used.
- the specific resistance is about 1.5 ⁇ ⁇ m (150 ⁇ ⁇ cm).
- capacitors are constantly required to lower the impedance (Z) in order to sufficiently exhibit their performance.
- the impedance is determined by various factors. For example, if the electrode area of the capacitor increases, the impedance decreases, and if a large capacitor is used, the impedance is naturally reduced. There is also an approach to lower the impedance by improving the separator. Nevertheless, particularly for small capacitors, the specific resistance of the electrolyte is a major factor in the impedance.
- nonprotonic organic solvents such as GBL Low-resistance electrolytic solutions using lactone
- KOKai Japanese Unexamined Patent Publication
- a capacitor using this non-proton electrolyte has a much higher impedance than a solid capacitor using an electronic conductor having a specific resistance of 1.0 ⁇ cm or less. Inferior.
- aluminum electrolytic capacitors have poor low-temperature characteristics due to the use of an electrolyte, and have a low temperature of 100 kHz at 100 kHz.
- the ratio of the impedance at C to the impedance at 20 ° C: Z (—40 ° C) / Z (20 ° C) is about 40, which is quite large. In view of such circumstances, it is now desired to provide an aluminum electrolytic capacitor having low impedance and excellent low-temperature characteristics.
- the water used as a part of the solvent in the electrolytic solution of the aluminum electrolytic capacitor is a substance that is chemically active with respect to the aluminum constituting the anode and cathode foils, and On the other hand, there is a problem that the anode foil reacts with the cathode foil to generate hydrogen gas or to remarkably deteriorate the characteristics.
- Japanese Patent Publication No. 59-153374 discloses that a buffer solution is prepared by adding a carboxylic acid and an ammonium salt of a carboxylic acid to a solvent obtained by adding 5 to 20% by weight of water to ethylene glycol. Further, the present invention discloses an electrolytic solution for driving an electrolytic capacitor, which is prepared by adding 0.05 to 3% by weight of p-diphenol. When this electrolytic solution is used, it is possible to provide an electrolytic capacitor that suppresses generation of boehmite reaction and generation of hydrogen gas and has improved low-temperature characteristics and life characteristics.
- Japanese Patent Application Laid-Open No. 63-148682 discloses that various organic acids, inorganic acids or salts thereof are dissolved as a solute in a solvent mainly composed of ethylene glycol.
- 0-nitroisole which is used as a corrosion inhibitor here, has an effect of absorbing hydrogen gas, and absorbs hydrogen gas generated from inside during use of electrolytic capacitors.
- the valve opening accident has the effect of suppressing a change in capacitance.
- p-dinitrophenol 0-dinitroisole is used for driving an electrolytic capacitor having a low water concentration, which is generally used conventionally.
- the liquid can have an initial hydrogen gas absorption effect, the amount of water occupying 20% by weight or more of the solvent in the electrolytic solution, or when the electrolytic capacitor is used. It has been found that when used in a high-temperature environment for a long period of time, a satisfactory hydrogen gas absorbing effect is exhibited and cannot be maintained. Disclosure of the invention
- An object of the present invention is to solve the above-mentioned problems of the conventional technology.
- the first object of the present invention is to express the impedance ratio at low impedance and at low and normal temperatures. Hydrogen gas with excellent low-temperature characteristics, good life characteristics, and even when using an electrolytic solution that uses a mixed solvent with a high water content or when using an electrolytic capacitor in a high-temperature environment
- An object of the present invention is to provide an electrolytic solution for driving an electrolytic capacitor capable of exhibiting an absorption effect.
- Another object of the present invention is to provide an electrolytic capacitor using the electrolytic solution of the present invention.
- capacitors especially aluminum electrolytic capacitors.
- the present invention relates to a group consisting of a solvent consisting of 20 to 80% by weight of an organic solvent and 80 to 20% by weight of water, and a group consisting of a carboxylic acid or a salt thereof and an inorganic acid or a salt thereof.
- a solvent consisting of 20 to 80% by weight of an organic solvent and 80 to 20% by weight of water
- a group consisting of a carboxylic acid or a salt thereof and an inorganic acid or a salt thereof for an electrolyte containing at least one electrolyte selected from
- At least one member selected from the group consisting of nitrophenol, nitrobenzoic acid, dinitrobenzoic acid, nitroacetophenone and nitroisole An electrolytic solution for driving an electrolytic capacitor, characterized in that the above-mentioned nitrogen compound is added.
- the nitrogen compound can exhibit an excellent hydrogen gas absorbing effect even when used alone, in combination with other components of the electrolytic solution. It is more preferable to use a combination of two or more nitrogen compounds in order to obtain a compound.
- the two-nitro compound When the two-nitro compound is used by adding it to the electrolytic solution of the present invention, it is preferable to use it in an amount of 0.01 to 5% by weight based on the total amount of the electrolytic solution. .
- the organic solvent used together with water to form a mixed solvent is preferably a protonic solvent, a non-protonic solvent or a mixture thereof. That is, the proton-based solvent and the non-proton-based solvent may be used alone, respectively, or may be used in any combination of two or more as needed. May be used.
- the proton solvent is preferably an alcohol compound
- the non-proton solvent is preferably a lactone compound.
- the acid or salt thereof is preferably formic acid, acetic acid, propionic acid, butyric acid, p-dibenzoic acid, salicylic acid, benzoic acid, oxalic acid, malonic acid, conodic acid, glutaric acid, adipic acid.
- Fumaric acid, maleic acid, phthalic acid, azelaic acid, citric acid and oxybutyric acid, and their ammonium, sodium, potassium, ammonium and alkylammonium salts One or more selected from
- the inorganic acid or a salt thereof also used as an electrolyte is preferably phosphoric acid, phosphorous acid, hypophosphorous acid, boric acid and sulfamic acid, and an ammonium salt thereof, One or more selected from a sodium salt, a potassium salt, an amine salt and an alkylammonium salt.
- electrolyte of the present invention may further include, in addition to the above-mentioned nitrogen compound,
- An additive selected from the following may be included as needed. These additives may be used alone or in any combination of two or more additives.
- the present invention provides, in another aspect thereof, a solvent comprising 20 to 80% by weight of an organic solvent and 80 to 20% by weight of water;
- a solvent comprising 20 to 80% by weight of an organic solvent and 80 to 20% by weight of water;
- an electrolyte containing at least one electrolyte selected from the group consisting of acids or salts thereof for an electrolyte containing at least one electrolyte selected from the group consisting of acids or salts thereof,
- FIG. 1 is a sectional view showing a preferred example of an electrolytic capacitor according to the present invention.
- FIG. 2 is a perspective view showing a configuration of a capacitor element of the electrolytic capacitor shown in FIG. BEST MODE FOR CARRYING OUT THE INVENTION
- the electrolytic solution for driving an electrolytic capacitor according to the present invention comprises a solvent comprising 20 to 80% by weight of an organic solvent and 80 to 20% by weight of water.
- At least one electrolyte selected from the group consisting of carboxylic acids or salts thereof and inorganic acids or salts thereof,
- a solvent having a high water concentration composed of a mixture of an organic solvent and water is used as a solvent for dissolving the electrolyte.
- a proton solvent or a non-proton solvent can be used alone or in an optional combination.
- suitable proton solvents include alcohol compounds. Specific examples of alcohol compounds that can be advantageously used here are limited to those listed below. Although not necessarily used, monohydric alcohols such as ethyl alcohol, propyl alcohol, and butyl alcohol, and dihydric alcohols such as ethylene glycol, diethyl glycol, triethylene glycol, and propylene glycol ( Glycol) and glycerin.
- suitable nonproton solvents include lactone compounds. Also, specific examples of lactone compounds that can be advantageously used here are not limited to those listed below, but are not limited to ⁇ -ptyrolactone and other intramolecular compounds. Polarized compounds can be mentioned
- one proton solvent when one or more selected from a proton solvent and a non-proton solvent is used, more specifically, one proton solvent is used. It may be used, one kind of non-proton solvent may be used, plural kinds of proton solvents may be used, and plural kinds of non-proton solvents may be used. It may be used, or a mixed system of one or more proton solvents and one or more nonproton solvents may be used.
- water is used as a solvent component in addition to the above-mentioned organic solvent.
- a relatively large amount of water is used in combination with a conventional electrolyte. Is done.
- the use of such a solvent lowers the freezing point of the solvent, thereby improving the specific resistance characteristics of the electrolyte at a low temperature, and reducing the difference between the specific resistance at a low temperature and at a normal temperature. Good low-temperature characteristics indicated by
- the content of water in the electrolytic solution is preferably in the range of 20 to 80% by weight, and the balance is an organic solvent.
- the water content is less than 20% by weight or exceeds 80% by weight, the degree of freezing point drop of the electrolyte becomes insufficient, and good low-temperature characteristics of the electrolytic capacitor are obtained. It becomes difficult.
- a more preferred water content in the solvent is 30 to The most preferred water content is in the range of 45-80% by weight.
- an organic acid particularly preferably a carboxylic acid or a salt thereof, and an inorganic acid or a salt thereof are used, and these electrolyte components may be used alone. They may be used singly or in combination of two or more.
- carboxylic acids that can be used as electrolyte components include, but are not limited to, those listed below, formic acid, acetic acid, propionic acid, butyric acid, p-dibenzoic acid, Monocarboxylic acids such as salicylic acid and benzoic acid, and dicarboxylic acids such as oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, fumaric acid, maleic acid, phthalic acid and azelaic acid And carboxylic acids having a functional group such as a hydroxyl group such as citric acid and oxybutyric acid can also be used.
- formic acid acetic acid, propionic acid, butyric acid, p-dibenzoic acid
- Monocarboxylic acids such as salicylic acid and benzoic acid
- dicarboxylic acids such as oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, fumaric acid,
- examples of the inorganic acid that can be used as the electrolyte component are not limited to those listed below, but include phosphoric acid, phosphorous acid, hypophosphorous acid, and the like. Boric acid, sulfamic acid and the like are included.
- salts of the carboxylic acids or the inorganic acids as described above can be used as the salts of the carboxylic acids or the inorganic acids as described above, but suitable salts include, for example, ammonium salts and sodium salts. Salts, potassium salts, amine salts, alkyl ammonium salts and the like are included. Among such salts, it is more preferable to use ammonium salt.
- an inorganic acid or a salt thereof when used as the electrolyte in the practice of the present invention, a decrease in the freezing point of the electrolyte can be expected, which can contribute to further improving the low-temperature characteristics of the electrolyte. it can.
- the use of an inorganic acid or a salt thereof increases the ability to absorb hydrogen gas (described in detail below) derived from the nitrogen compound particularly used in the present invention over a long period of time. It is also worth noting that it can be maintained.
- the amount of the electrolyte used in the electrolytic solution of the present invention depends on various characteristics such as the characteristics required for the electrolytic solution and the finally obtained capacitor, the type and composition and amount of the solvent used, and the type of the electrolyte used.
- the optimum amount can be determined appropriately according to the actor. For example, as described above, when an inorganic acid-based electrolyte is used in combination with a carboxylic acid-based electrolyte, the content of the inorganic acid-based electrolyte in the mixed electrolyte can be changed in a wide range. Usually, it is preferable that the inorganic acid-based electrolyte is contained in the range of about 0.1 to 15% by weight based on the total amount of the electrolyte.
- the electrolytic solution of the present invention is, in particular, an electrolytic solution having a specific composition as described above, that is, an aqueous mixed solvent comprising 20 to 80% by weight of an organic solvent and 80 to 20% by weight of water,
- an electrolyte containing at least one electrolyte selected from the group consisting of carboxylic acids or salts thereof and inorganic acids or salts thereof nitrol, for example, p-nitrophenol, Nitrobenzoic acid, for example p-dibenzobenzoic acid, dinitrobenzoic acid, nitroacetophenone, for example p-nitroacetophenonone, nitro It is characterized in that at least one compound selected from the group of compounds such as anisol is added as an additional additive.
- the nitrogen compound When the above-mentioned nitrogen compound is added to the electrolytic solution of the present invention, a specific composition effective for the effect of the present invention is employed in the electrolytic solution itself, so that it can be used alone. Although satisfactory hydrogen gas absorption effects and halogen scavenging effects can be achieved, according to the present inventors' findings, two or more compounds were used in combination. A more favorable effect can be expected. In general, it is recommended to use a mixture of the two nitrogen compounds. In addition, it is preferable that the nitrogen compound is usually used by adding it in an amount of 0.01 to 5% by weight based on the total amount of the electrolytic solution. If the amount of the nitro compound is less than 0.01% by weight, the intended effect can hardly be obtained. Conversely, if the amount exceeds 5% by weight, the intended effect can be further improved. It cannot be expected, and may adversely affect other characteristics in some cases.
- the electrolyte solution of the present invention can contain components other than those described above as additional additives, if necessary.
- Suitable additives include, for example, the following compounds:
- Chelate compounds such as ethylenediaminetetraacetic acid (EDTA), trans-1,2-diaminocyclohexane N, N, ', N'-tetraacetic acid monohydrate Object (CyDTA), Shin (DHEG), ethylenediamine tetrakis (methylenphosphonate) (EDTPO), diethylamine (N, N, N ', N ", N", pentaacetic acid) DTPA), diaminopropanol tetraacetic acid (DPTA-0H), ethylenediamine diacetate (EDDA), ethylenediamine N, N'bis (methylenphosphonate) Acid) 1/2 dihydrate (EDDPO), glycol ether diammine tetraacetic acid (GEDTA), hydroxyxethylethylenediamine triacetic acid (EDTA-OH) and the like.
- EDTA ethylenediaminetetraacetic acid
- CyDTA trans-1,2-diamino
- the chelate compound in the range of 0.01 to 3% by weight.
- Such a chelate compound can prolong the life of the capacitor by suppressing the hydration reaction of the aluminum (A1) electrode foil of the low impedance capacitor, and improve the low temperature characteristics of the electrolytic capacitor (when the solvent is not used). Since the composition is close to the frozen state, the change in impedance at normal temperature and low temperature is small), and effects such as improvement of corrosion resistance can be obtained.
- sugars for example, glucose, fructose, xylose, galactose and the like.
- saccharides are preferably added in the range of 0.01 to 5% by weight. Such saccharides can reduce the hydration of the A1 electrode foil of the low-impedance capacitor, prolong the life of the capacitor, suppress the decomposition and activation of electrolytes such as carboxylic acids by adding saccharide, and suppress the electrolytic capacitor.
- the solvent has a composition close to the antifreeze state, so the change in impedance between room temperature and low temperature is small).
- Hydroxybenzyl alcohol such as 2-hydroxyquinbenzyl alcohol, L-glutamic acid diacetate or a salt thereof.
- this additive is preferably added in the range of 0.01 to 5% by weight.
- Such additives can extend the life of the capacitor by suppressing the hydration reaction of the A1 electrode foil of the low-impedance capacitor. And other effects such as improving the low-temperature characteristics of the sensor (since the composition of the solvent is close to the antifreeze state, the change in impedance between room temperature and low temperature is small).
- Each of the above-mentioned compounds (1) to (3) can exert many remarkable effects when they are added to the electrolytic solution of the present invention, and most of the effects are due to the electrolysis of the nitric compound. It can be expected even if it is not contained in the liquid. Further, according to the study of the present inventors, such a remarkable effect is particularly attained by converting at least one of the above compounds (1) to (3) into a gluconic acid as described below. ⁇ Can be obtained when combined with gluconolactone.
- electrolyte solution of the present invention may be added to the above-mentioned additives (including the case of adding a single nitro compound), and if necessary,
- Dalconic acid-gluconolactone when added to the electrolyte of the present invention, can prolong the life of the electrolytic capacitor, improve low-temperature characteristics, and have an excellent hydrogen gas absorption effect. In addition to the special effects of the present invention, such as the present invention, a remarkable effect such as improvement of corrosion resistance can be obtained.
- additives commonly used in the field of aluminum electrolytic capacitors or other electrolytic capacitors may be further added.
- suitable conventional additives include, for example, mannits, silane coupling agents, water-soluble silicones, and polymer electrolytes.
- the electrolytic solution of the present invention can be prepared by mixing and dissolving the above-described various components in an arbitrary order. Can use conventional techniques as they are or with modifications. For example, after preparing a solvent with a high water concentration, which is a mixture of an organic solvent and water, easily prepare it by dissolving the electrolyte, the nitrous compound and, if necessary, any additives in the obtained solvent. can do.
- a solvent with a high water concentration which is a mixture of an organic solvent and water
- a capacitor element formed of an electrolytic capacitor, preferably, an anode foil and a cathode foil which are arranged to face each other, and a separator paper interposed therebetween.
- An electrolytic capacitor comprising: an electrolytic solution;
- the electrolytic capacitor of the present invention is more preferably an aluminum electrolytic capacitor, and most preferably an anodic foil comprising an aluminum foil and an anodic oxide film on the surface of the aluminum foil. And a cathode foil made of aluminum foil and wound so that both surfaces face each other with a separator paper therebetween.
- a case accommodating the capacitor element and the electrolytic solution, and an elastic sealing body sealing an opening of the case;
- the aluminum electrolytic capacitor of the present invention preferably has an anode foil in which the surface of an etched aluminum foil is anodized and a cathode foil made of an etched aluminum foil.
- a capacitor element and an electrolyte formed by winding the two so that the two surfaces face each other via a separator are accommodated in a case, and the capacitor element is stored in the case.
- the opening of the accommodated case is configured to be sealed with an elastic sealing body.
- FIG. 1 is a cross-sectional view showing a preferred example of the electrolytic capacitor of the present invention
- FIG. 2 shows a capacitor element of the electrolytic capacitor shown in FIG.
- FIG. 3 is an enlarged perspective view showing a thickness direction.
- the illustrated example is an electrolytic capacitor having a wound structure.
- the electrolytic capacitor of the present invention can be modified or improved within the scope of the present invention. Needless to say, Includes electrolytic capacitors other than the round structure.
- the illustrated electrolytic capacitor 10 is a chip-type aluminum electrolytic capacitor, in which the capacitor element 1 impregnated with an electrolytic solution is housed in a metal case 4 and the opening of the case 4 is closed. It has a structure closed by body 3.
- the capacitor element 1 housed in a metal case is in the form of a wound sheet laminate 20.
- the laminate 20 has an aluminum foil (anode) 21 having an aluminum oxide film 22 on the entire surface, an aluminum foil (cathode) 23, and a gap between these electrodes. It consists of a first separator (isolation paper) 24 and a second separator (isolation paper) 25 sandwiched between them.
- the first separator 24 and the second separator 25 may be the same or different, but are preferably the same from the viewpoint of manufacturing process and cost.
- the second separator 25 may be formed of a common insulating film as needed.
- the capacitor element 1 is impregnated with an electrolyte.
- the sealing body 3 has a lead wire through hole for inserting the lead wire 2 and sealing the lead wire 2 therein.
- a curl 14 is applied to the end of the opening of the case 4 in order to increase the sealing strength of the sealing body 3.
- the electrolytic capacitors shown in FIGS. 1 and 2 are, for example, as follows: Can be manufactured. First, a high-purity aluminum foil was used as a raw material, the surface of which was etched to increase the surface area, and then the surface of the aluminum foil was anodized to entirely apply an oxide film. An anode foil and a cathode foil whose surface is etched to increase the surface area are produced. Next, the obtained anode foil and cathode foil are disposed to face each other, and further, a separator is formed between the foils to form a laminate, and the laminate is wound. An element having the structure taken, that is, a capacitor element is manufactured.
- the obtained capacitor element is impregnated with an electrolytic solution, and the capacitor element impregnated with the electrolytic solution is stored in a case (generally made of aluminum) as described above, and the opening of the case is opened.
- the part is closed with a sealing body.
- the aluminum foil used as the anode foil and the cathode foil is preferably a high-purity aluminum foil having a purity of 99% or more.
- the anode foil is preferably formed by electrochemically etching an aluminum foil, anodizing to form an oxide film on the surface, and then attaching a lead tab for extracting an electrode. it can.
- the cathode foil can be formed by applying an etching treatment to an aluminum foil and attaching a lead tab for extracting an electrode. The cathode foil is not subjected to anodic oxidation.
- the capacitor element can be obtained by winding the anode foil and the cathode foil formed as described above while facing each other with the above-mentioned separators interposed therebetween.
- the separator used to make the capacitor element is not particularly limited, but is preferably a naturally occurring cellulosic material, for example,
- This paper is made from raw materials such as Manila hemp and vegetation pulp.
- pulp of vegetation for example, it is possible to use pulp of vegetation as a raw material, and to advantageously use paper made from the raw pulp through a dust removing step, a washing step, a beating step, a paper making step, and the like. it can.
- the use of paper derived from synthetic fibers is also considered possible.Such paper is not preferred because it has poor heat resistance or the contained halogen ions cause corrosion of the capacitor. Absent.
- the sealing body used in the electrolytic capacitor of the present invention has a high hardness and a moderate rubber elasticity, is impermeable to the electrolyte, and has good airtightness as the sealing body. As long as it is, it can be formed from various conventional materials. Suitable sealing material is, for example,
- Elastic rubbers such as natural rubber (NR), styrene butadiene (SBR), ethylen propylene urea polymer (EPT), and isobutylene-isoprene rubber (IIR).
- NR natural rubber
- SBR styrene butadiene
- EPT ethylen propylene urea polymer
- IIR isobutylene-isoprene rubber
- vulcanized IR having better heat resistance, for example, IR vulcanization, quinoid vulcanization, resin vulcanization and the like. Resin vulcanization IR is particularly preferred.
- a resin material plate for example, a fluorine resin plate such as a PTFE plate
- a hybrid material bonded with elastic rubber can also be used advantageously.
- a wound aluminum electrolytic capacitor is manufactured according to the following procedure.
- the aluminum foil was electrochemically etched, an oxide film was formed on the entire surface of the aluminum foil after the etching process, and then a lead tab for extracting the electrode was attached to make the aluminum anode foil. .
- another aluminum foil was also subjected to an electrochemical etching treatment, and a lead tab for extracting an electrode was settled to form an aluminum cathode foil.
- a capacitor element was fabricated by winding a separator (separation paper) between the anode foil and the cathode foil. Then, the capacitor element is impregnated with an electrolyte having the composition shown in Table 1 below, and then housed in a bottomed aluminum case so that the lead tab for extracting the electrode comes out of the case. Then, the opening of this case was sealed with an elastic sealing member to produce a wound-type electrolytic capacitor (100 WV—100 UF).
- Example 1 The method described in Example 1 was repeated, but in the case of this example, the composition of the electrolytic solution used was changed as shown in Table 1 below. The results obtained by the property test are summarized in Table 1 below.
- Example 1 The method described in Example 1 was repeated.In this example, for comparison, the nitrous compound was removed from the electrolyte used, and the composition of the electrolyte was described in Table 1 below for comparison. Was changed as follows. The results obtained by the property test are summarized in Table 1 below.
- Example 5 Water 40.0 161 1.2 5.6 1024 8.7 6.2 932 9.5 1.9 Hou glaze ammonium 11.0
- Example 9 water 40.0 40 1.0 3.6 1018 5.8 6.4 937 6.4 2.2 Angulinium glutarate 19.0
- the specific resistance of the electrolytic solution of the present invention was almost the same as that of the comparative example except for Example 5, and these specific resistance values were It can be seen that is smaller than that of the conventional general electrolyte.
- the specific resistance of the electrolytic solution of Example 5 was a large value of 161 ⁇ ⁇ cm.When comprehensively judged in consideration of the force and other characteristics, it was sufficiently comparable to that of a normal electrolytic capacitor. It can be said that it is at a practical level. Therefore, the electrolytic capacitor manufactured by using the electrolytic solution of the present invention can realize one layer of lower impedance as compared with the conventional electrolytic capacitor, and at least less. Can achieve a low impedance equivalent to the conventional one.
- the electrolytic capacitor using the electrolytic solution of the present invention had a small Z ratio, especially at a high frequency of 100 kHz, which was smaller than that of the comparative example. You can see that it is suppressed. This indicates that the electrolytic capacitor using the electrolytic solution of the present invention exhibits excellent low-temperature characteristics over a wide frequency range.
- the nitric compound was added to the electrolytic solution in an amount in the range of 0.013% by weight, so that the capacitor was left at a high temperature under a rated voltage. Even after 30000 hours at 105 ° C, the characteristics were stable and the capacitors themselves were not destroyed by gas generation.
- the electrolytic capacitor of the comparative example using an electrolytic solution containing no nitrous compound in any of the capacitors, at an early stage of the high-temperature storage long before 300 hours, hydrogen was added. The explosion-proof valve was activated due to the expansion of the case due to gas generation, making it unusable. This indicates that the present invention can easily achieve a longer life of the electrolytic capacitor.
- Example 11-19 The procedure described in Example 1 was repeated.In this example, the composition of the electrolytic solution used is shown in Table 2 below to confirm the effect of simultaneous addition of the chelate compound and the nitrous compound. Was changed as follows. Satisfactory test results were obtained, as summarized in Table 2 below. In Table 2 below, the test results of Comparative Examples 1 to 3 are also described.
- Comparative example 3 Water 50.0 20 1.0 7.9 1023 4.7 6.9 All gas explosion-proof valves by 250 hours due to gas generation
- Example 11 Ammonium formate 4-0 21 1.1 4.6 1044 D. 919 5.8 2.5 In-specification hypophosphorous acid 0.4
- Example 14 Aluminum succinate 24.2 21 1.1 3.8 1021 5.2 6.9 930 5.8 2.2 Same as above Benzenesulfonic acid 0, 4
- Example 1 The procedure described in Example 1 was repeated.In this example, the composition of the electrolytic solution used was changed as shown in Table 3 below to confirm the effect of simultaneous addition of the saccharide and the nitro compound. changed. Satisfactory test results were obtained, as summarized in Table 3 below. In Table 3 below, the test results of Comparative Examples 1 to 3 are also described.
- Comparative Example 1 Water 30.0 85 1.3 36.1 1008 7.0 6.5 100% explosion-proof valve by gas generation Ammonium adipate 10.0 hours
- Comparative example 2 Water 40.0 40 1.1 9.7 1014 5.7 6.1 All gas explosion-proof valves Adipic acid amp.
- Example 22 adipic acid-en ⁇ Niumu 23.8 24 1.1 3.9 1027 5.3 7.0 924 5.9 2.2 Ditto dinitro with acid 0
- Example 1 The procedure described in Example 1 was repeated.In this example, the electrolytic solution used was used to confirm the effect of simultaneous addition of hydroxybenzyl alcohol, glutamate diacetate, etc. and the nitro compound. Was changed as shown in Table 4 below. Satisfactory test results were obtained, as summarized in Table 4 below. In Table 4 below, the test results of Comparative Examples 1 to 3 are also described.
- Comparative Example 1 Water 30.0 85 1.3 36.1 1008 7.0 6.5 100% explosion-proof valve by gas generation Ammonium adipate 10.0 activated by 500 hours
- Example 1 The method described in Example 1 was repeated.In this example, the composition of the electrolytic solution used was changed as shown in Table 5 below in order to confirm the effect of simultaneous addition of the nitro compound and dalconolactone. Was changed as described in. Satisfactory test results were obtained, as summarized in Table 5 below. Table 5 below also shows the test results of Comparative Examples 1 to 3.
- Example 46 Adipine K ammonium 16.4 58 1.0 3.6 1003 6.2 6.3 933 7.0 2.1 Same as above Boric acid 0.4
- Example 1 The method described in Example 1 was repeated.
- the composition of the electrolytic solution used was set forth in Table 6 below. Was changed as follows. Satisfactory test results were obtained, as summarized in Table 6 below. In Table 6 below, the test results of Comparative Examples 1 to 3 are also described.
- Example 50 Ethylenediaminetetraacetic acid 0.5 28 1. 14.6 u ⁇ Q 898 6.1 2.3 Within specification — ⁇ 0 2
- Example 51 diethylenetriaminepentaacetic acid 1.026 1.1.4.1034 5.27.27.29006.02.3 Same as above
- Example 52 Ethylenediaminetetracarboxylic acid 2.023 1.1 3.9 1025 5.5 5.7.0 902 6.3 2.0 Same as above
- Example 55 EDT PO 1.0 29 1.0 3.7 1010 5.2 6.1 929 6.0 2.0 Same as above Glutamate diacetate 0.5
- Example 58 Fructose 0.5 40 1.0 3.6 1018 4.8 6.4 937 5.4 2.2 Same as above.
- Example 1 The method described in Example 1 was repeated.
- the high-temperature storage conditions employed in Example 1 (rated voltage application, 105 ° C
- the measurement of the characteristic value was performed after the elapse of 600 hours at 105 ° C.
- the results were as shown in Table 7 below.
- Example 60 ammonium formate 4.6 28 1.1 4.6 1044 5.4 7.7 855 6.6 2.1 In-specification hypophosphorous acid 0.4
- Example 62 Water 40.0 40 1.0 3.6 1018 5.8 6.4 632 9.1 1.1 Same as above.Ammonidium glucurate 19.0
- Comparative Examples 4 to 6 correspond to Comparative Examples 1 to 3, respectively, and Examples 60 to 62 correspond to Examples 1, 3, and 9, respectively.
- Comparative Examples 4 to 6 using the electrolyte solution without the addition of the nitrogen compound all of them could not be used until 250 to 500 hours passed.
- the capacitors of Examples 60 to 62 although the capacity was reduced, they could be used even after elapse of 600 hours.
- the combined use of the carboxylic acid of the organic electrolyte or its salt and the inorganic acid of the inorganic electrolyte further improves the life characteristics of the electrolytic capacitor.
- an electrolytic capacitor driving electrolytic solution that can provide an excellent hydrogen gas absorption effect even when an electrolytic solution using a large solvent is used or when an electrolytic capacitor is used in a high-temperature environment. Further, according to the present invention, by using such an electrolytic solution, low impedance and excellent low temperature characteristics are obtained.
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Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/529,297 US6285543B1 (en) | 1998-12-01 | 1999-12-01 | Electrolytic solution for use in electrolytic capacitor and electrolytic capacitor |
DE69931900T DE69931900T2 (de) | 1998-12-01 | 1999-12-01 | Elektrolyt für elektrolytkondensator und elktrolytkondensator |
CA002307599A CA2307599C (en) | 1998-12-01 | 1999-12-01 | Electrolytic solution for use in electrolytic capacitor and electrolytic capacitor |
EP99972830A EP1063662B1 (en) | 1998-12-01 | 1999-12-01 | Electrolyte for driving electrolytic capacitor and electrolytic capacitor |
HU0004160A HUP0004160A3 (en) | 1998-12-01 | 1999-12-01 | Electrolyte for driving electrolytic capacitor and electrolytic capacitor |
HK01103635A HK1033029A1 (en) | 1998-12-01 | 2001-05-25 | Electrolyte for driving electrolytic capacitor andelectrolytic capacitor. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10/356955 | 1998-12-01 | ||
JP35695598A JP3366268B2 (ja) | 1998-12-01 | 1998-12-01 | 電解コンデンサ駆動用電解液及びこれを使用した電解コンデンサ |
Publications (1)
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WO2000033338A1 true WO2000033338A1 (fr) | 2000-06-08 |
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ID=18451623
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP1999/006742 WO2000033338A1 (fr) | 1998-12-01 | 1999-12-01 | Electrolyte pour condensateur electrolytique, et condensateur electrolytique y relatif |
Country Status (11)
Country | Link |
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US (1) | US6285543B1 (ja) |
EP (1) | EP1063662B1 (ja) |
JP (1) | JP3366268B2 (ja) |
KR (1) | KR100386984B1 (ja) |
CN (2) | CN1211818C (ja) |
CA (1) | CA2307599C (ja) |
DE (1) | DE69931900T2 (ja) |
HK (1) | HK1033029A1 (ja) |
HU (1) | HUP0004160A3 (ja) |
TW (1) | TW463193B (ja) |
WO (1) | WO2000033338A1 (ja) |
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USRE48905E1 (en) | 2002-01-31 | 2022-01-25 | Greatbatch Ltd. | Electrolytes for capacitors |
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DE10104714C1 (de) * | 2001-02-02 | 2002-07-25 | Epcos Ag | Betriebselektrolyt für einen Aluminium-Elektrolyt-Kondensator, Kondensator mit dem Betriebselektrolyt und Verwendung des Kondensators |
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JP7089874B2 (ja) * | 2015-04-28 | 2022-06-23 | パナソニックIpマネジメント株式会社 | 電解コンデンサ |
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US10210997B2 (en) * | 2016-08-08 | 2019-02-19 | Rubycon Corporation | Solid electrolytic capacitor and manufacturing method thereof |
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CN112908705B (zh) * | 2021-02-04 | 2022-10-11 | 广州金立电子有限公司 | 一种高可靠性电解液及电容器 |
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US7279117B2 (en) * | 2001-12-28 | 2007-10-09 | Rubycon Corporation | Electrolytic capacitor and electrolyte solution for use in an electrolytic capacitor |
US7660101B2 (en) | 2001-12-28 | 2010-02-09 | Rubycon Corporation | Electrolytic capacitor and electrolyte solution for use in an electrolytic capacitor |
USRE48905E1 (en) | 2002-01-31 | 2022-01-25 | Greatbatch Ltd. | Electrolytes for capacitors |
Also Published As
Publication number | Publication date |
---|---|
HUP0004160A3 (en) | 2001-05-28 |
JP2000173872A (ja) | 2000-06-23 |
US6285543B1 (en) | 2001-09-04 |
DE69931900D1 (de) | 2006-07-27 |
CN100440398C (zh) | 2008-12-03 |
CA2307599A1 (en) | 2000-06-01 |
TW463193B (en) | 2001-11-11 |
EP1063662A1 (en) | 2000-12-27 |
KR20010031897A (ko) | 2001-04-16 |
DE69931900T2 (de) | 2006-11-09 |
CN1211818C (zh) | 2005-07-20 |
CN1530979A (zh) | 2004-09-22 |
HK1033029A1 (en) | 2001-08-10 |
HUP0004160A2 (hu) | 2001-04-28 |
CN1275239A (zh) | 2000-11-29 |
EP1063662A4 (en) | 2003-01-15 |
JP3366268B2 (ja) | 2003-01-14 |
KR100386984B1 (ko) | 2003-06-09 |
EP1063662B1 (en) | 2006-06-14 |
CA2307599C (en) | 2003-11-04 |
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