KR0144612B1 - Electrolyte of electrolytic condenser - Google Patents
Electrolyte of electrolytic condenserInfo
- Publication number
- KR0144612B1 KR0144612B1 KR1019950010198A KR19950010198A KR0144612B1 KR 0144612 B1 KR0144612 B1 KR 0144612B1 KR 1019950010198 A KR1019950010198 A KR 1019950010198A KR 19950010198 A KR19950010198 A KR 19950010198A KR 0144612 B1 KR0144612 B1 KR 0144612B1
- Authority
- KR
- South Korea
- Prior art keywords
- electrolyte
- present
- aluminum
- aluminum electrolytic
- nonionic surfactant
- Prior art date
Links
- 239000003792 electrolyte Substances 0.000 title claims abstract description 30
- 239000003990 capacitor Substances 0.000 claims abstract description 28
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 27
- 239000008151 electrolyte solution Substances 0.000 claims abstract description 20
- 239000002736 nonionic surfactant Substances 0.000 claims abstract description 13
- 150000007522 mineralic acids Chemical class 0.000 claims abstract description 6
- 150000007524 organic acids Chemical class 0.000 claims abstract description 6
- 235000005985 organic acids Nutrition 0.000 claims abstract description 5
- 150000003839 salts Chemical class 0.000 claims abstract description 5
- 239000002904 solvent Substances 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims abstract description 3
- JYCQQPHGFMYQCF-UHFFFAOYSA-N 4-tert-Octylphenol monoethoxylate Chemical compound CC(C)(C)CC(C)(C)C1=CC=C(OCCO)C=C1 JYCQQPHGFMYQCF-UHFFFAOYSA-N 0.000 claims description 4
- 239000013504 Triton X-100 Substances 0.000 claims description 3
- 229920004890 Triton X-100 Polymers 0.000 claims description 3
- 239000002798 polar solvent Substances 0.000 claims description 3
- HNLXNOZHXNSSPN-UHFFFAOYSA-N 2-[2-[2-[2-[2-[2-[2-[4-(2,4,4-trimethylpentan-2-yl)phenoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethanol Chemical compound CC(C)(C)CC(C)(C)C1=CC=C(OCCOCCOCCOCCOCCOCCOCCO)C=C1 HNLXNOZHXNSSPN-UHFFFAOYSA-N 0.000 claims description 2
- 239000003586 protic polar solvent Substances 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract description 5
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 5
- 239000010408 film Substances 0.000 description 5
- -1 alcohol ethers Chemical class 0.000 description 4
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- AMQJEAYHLZJPGS-UHFFFAOYSA-N N-Pentanol Chemical compound CCCCCO AMQJEAYHLZJPGS-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- ZSIAUFGUXNUGDI-UHFFFAOYSA-N hexan-1-ol Chemical compound CCCCCCO ZSIAUFGUXNUGDI-UHFFFAOYSA-N 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- BDJRBEYXGGNYIS-UHFFFAOYSA-N nonanedioic acid Chemical compound OC(=O)CCCCCCCC(O)=O BDJRBEYXGGNYIS-UHFFFAOYSA-N 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 description 2
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- XLSXKCPCBOMHON-UHFFFAOYSA-N 1,1-dimethoxypropan-1-ol Chemical compound CCC(O)(OC)OC XLSXKCPCBOMHON-UHFFFAOYSA-N 0.000 description 1
- ORLFVWPPBMVPNZ-UHFFFAOYSA-N 1-(6-methylheptyl)-4-[4-(6-methylheptyl)phenoxy]benzene Chemical compound C1=CC(CCCCCC(C)C)=CC=C1OC1=CC=C(CCCCCC(C)C)C=C1 ORLFVWPPBMVPNZ-UHFFFAOYSA-N 0.000 description 1
- OEYNWAWWSZUGDU-UHFFFAOYSA-N 1-methoxypropane-1,2-diol Chemical compound COC(O)C(C)O OEYNWAWWSZUGDU-UHFFFAOYSA-N 0.000 description 1
- RTBFRGCFXZNCOE-UHFFFAOYSA-N 1-methylsulfonylpiperidin-4-one Chemical compound CS(=O)(=O)N1CCC(=O)CC1 RTBFRGCFXZNCOE-UHFFFAOYSA-N 0.000 description 1
- JKTYGPATCNUWKN-UHFFFAOYSA-N 4-nitrobenzyl alcohol Chemical compound OCC1=CC=C([N+]([O-])=O)C=C1 JKTYGPATCNUWKN-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- NJQFCQXFOHVYQJ-PMACEKPBSA-N BF 4 Chemical compound C1([C@@H]2CC(=O)C=3C(O)=C(C)C4=C(C=3O2)[C@H](C(C)C)C2=C(O4)C(C)=C(C(C2=O)(C)C)OC)=CC=CC=C1 NJQFCQXFOHVYQJ-PMACEKPBSA-N 0.000 description 1
- 239000005711 Benzoic acid Substances 0.000 description 1
- FBPFZTCFMRRESA-KVTDHHQDSA-N D-Mannitol Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-KVTDHHQDSA-N 0.000 description 1
- 229930195725 Mannitol Natural products 0.000 description 1
- OTRAYOBSWCVTIN-UHFFFAOYSA-N OB(O)O.OB(O)O.OB(O)O.OB(O)O.OB(O)O.N.N.N.N.N.N.N.N.N.N.N.N.N.N.N Chemical compound OB(O)O.OB(O)O.OB(O)O.OB(O)O.OB(O)O.N.N.N.N.N.N.N.N.N.N.N.N.N.N.N OTRAYOBSWCVTIN-UHFFFAOYSA-N 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- GJYJYFHBOBUTBY-UHFFFAOYSA-N alpha-camphorene Chemical compound CC(C)=CCCC(=C)C1CCC(CCC=C(C)C)=CC1 GJYJYFHBOBUTBY-UHFFFAOYSA-N 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- JFCQEDHGNNZCLN-UHFFFAOYSA-N anhydrous glutaric acid Natural products OC(=O)CCCC(O)=O JFCQEDHGNNZCLN-UHFFFAOYSA-N 0.000 description 1
- 235000010233 benzoic acid Nutrition 0.000 description 1
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 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
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- KTHXBEHDVMTNOH-UHFFFAOYSA-N cyclobutanol Chemical compound OC1CCC1 KTHXBEHDVMTNOH-UHFFFAOYSA-N 0.000 description 1
- HPXRVTGHNJAIIH-UHFFFAOYSA-N cyclohexanol Chemical compound OC1CCCCC1 HPXRVTGHNJAIIH-UHFFFAOYSA-N 0.000 description 1
- XCIXKGXIYUWCLL-UHFFFAOYSA-N cyclopentanol Chemical compound OC1CCCC1 XCIXKGXIYUWCLL-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000003411 electrode reaction Methods 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 235000010355 mannitol Nutrition 0.000 description 1
- 239000000594 mannitol Substances 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 1
- WVDDGKGOMKODPV-ZQBYOMGUSA-N phenyl(114C)methanol Chemical compound O[14CH2]C1=CC=CC=C1 WVDDGKGOMKODPV-ZQBYOMGUSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- 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 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229960004889 salicylic acid Drugs 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 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
- H01G9/04—Electrodes or formation of dielectric layers thereon
- H01G9/042—Electrodes or formation of dielectric layers thereon characterised by the material
- H01G9/045—Electrodes or formation of dielectric layers thereon characterised by the material based on aluminium
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
본 발명은 알루미늄 전해 콘덴서에 사용되는 구동용 전해액에 관한 것으로, 프로톤성 극성 용매와 전해질로 조성되는 알루미늄 전해 콘덴서용 전해액에 비이온성 계면활성제를 적정 범위로 첨가 하므로로서 정전용량, 전도도 등과같은 특성을 그대로 유지함과 동시에 화성성 및 내전압을 향상시킨 알루미늄 전해 콘덴서용 전해액을 제공하고자 하는데, 그 목적이 있다.The present invention relates to a driving electrolyte used in an aluminum electrolytic capacitor, and adds a nonionic surfactant in an appropriate range to an electrolytic solution for an aluminum electrolytic capacitor composed of a protic polar solvent and an electrolyte, thereby providing characteristics such as capacitance and conductivity. The present invention aims to provide an electrolytic solution for an aluminum electrolytic capacitor which is maintained as it is and which has improved chemical resistance and withstand voltage.
상기한 목적을 달성하기 위한 본 발명은, 프로톤성 극성용매를 주용매로 하고 여기에 유기산, 무기산 및 이들의 염으로 이루어진 그룹중에서 선택된 1종 또는 2종 이상의 전해질을 첨가하는 것을 포함하여 조성되는 알루미늄 전해 콘덴서용 전해액에 있어서, 상기 전해액에 하기식(Ⅰ)의 일반식을 갖는 비이온성 계면 활성제를 전해액의 전체 중량에 대하여 5%이하로The present invention for achieving the above object is an aluminum composition comprising a protic polar solvent as a main solvent and adding one or two or more electrolytes selected from the group consisting of organic acids, inorganic acids and salts thereof In the electrolyte solution for electrolytic capacitors, a nonionic surfactant having the general formula of the following formula (I) in the electrolyte solution is 5% or less with respect to the total weight of the electrolyte solution.
첨가하여 조성되는 알루미늄 전해 콘덴서용 전해액을 제공함을 그 요지로 한다.It is an object of the present invention to provide an electrolytic solution for aluminum electrolytic capacitors which is formed by addition.
Description
본 발명은 알루미늄 전해 콘덴서에 사용되는 구동용 전해액에 관한 것으로, 보다 상세하게는, 프로톤성 극성 용매와 전해질로 조성되는 전해액에 비이온성 계면활성제를 첨가하여 화성성 및 내전압(SPV : Sparking Voltage, 이하 'SPV'라 한다)을 향상시킨 알루미늄 전해 콘덴서용 전해액에 관한 것이다.The present invention relates to a driving electrolyte used in an aluminum electrolytic capacitor, and more particularly, by adding a nonionic surfactant to an electrolyte composed of a protic polar solvent and an electrolyte, the chemical composition and the breakdown voltage (SPV: Sparking Voltage, hereinafter) It relates to an electrolytic solution for aluminum electrolytic capacitors having improved " SPV ").
알루미늄 전해 콘덴서는 전기 전자기기의 중요한 구성요소의 하나로 표면을 전기분해 산화에 의해 산화피막으로 변화시킨 알루미늄을 전극으로 하고 그 사이에 전해액을 두는 구조로서 제작된다.An aluminum electrolytic capacitor is manufactured as a structure in which an electrode is made of aluminum whose surface is changed into an oxide film by electrolytic oxidation as an important component of an electric and electronic device, and an electrolyte is placed therebetween.
상기와 같은 구조를 갖는 전해 콘덴서는 사용중에 그 내부에서 다음과 같은 화학반응이 일어나므로, 그 특성을 계속적으로 유지하기 위해서는 시간의 경과에 무관하게 전해액 및 유전체인 알루미늄 산화박막을 초기의 안정한 상태로 유지해야만 한다.The electrolytic capacitor having the structure as described above undergoes the following chemical reactions during its use. Therefore, in order to maintain its characteristics continuously, the aluminum oxide thin films, which are electrolytes and dielectrics, are kept in an initial stable state regardless of time. You must keep it.
알루미늄 전해 콘덴서에 전압을 걸면 전해액과 알루미늄 전극 계면의 전극반응에 의해 전하가 이동하여 양극 계면에서는 산화반응이, 음극계면에서는 환원반응이 일어나고 동시에 전해액사이를 이온이 이동하여 전류가 흐르게 된다. 이때, 전해액은 이온이동의 모체역할을 한다.When voltage is applied to the aluminum electrolytic capacitor, the charge is transferred by the electrode reaction between the electrolyte and the aluminum electrode interface, the oxidation reaction occurs at the anode interface, and the reduction reaction occurs at the cathode interface, and at the same time, ions move between the electrolyte and current flows. At this time, the electrolyte serves as a parent of ion migration.
이와같은 알루미늄 전해 콘덴서의 특성은 주로 전해액의 성질 및 성분에 크게 좌우되며, 그 특성치는 통상 SPV, 정전용량 등으로 나타낸다.The characteristics of such an aluminum electrolytic capacitor largely depend on the properties and components of the electrolyte, and the characteristic values thereof are usually expressed by SPV, capacitance, and the like.
SPV는 전해 콘덴서에 일정 이상의 전압을 걸면, 유전체의 물리적 성질(유전율)이 변하여 더 이상 콘덴서의 역할을 할 수 없게 되고 전극, 산화피막, 전해액 사이에서 스파크(Spark)가 튀는 현상이 나타날때의 전압이며, 정전용량(F)은 전하를 가두어 들 수 있는 정도를 나타내는 것으로, 유전체의 유전율에 비례한다.SPV is a voltage when a certain voltage is applied to the electrolytic capacitor, the physical properties (dielectric constants) of the dielectric are changed so that it can no longer function as a capacitor and sparks appear between the electrode, oxide film and electrolyte. The capacitance F represents the extent to which charge can be trapped and is proportional to the dielectric constant of the dielectric.
이러한 알루미늄 전해 콘덴서의 특성치에 큰 영향을 미치는 전해액은 종래 70~80%의 프로톤성 극성용매에 유기산, 무기산 및 그염으로 이루어진 그룹중에서 선택된 1종 또는 2종이상을 전해질로 20~30%, 수소가스 흡수제, SPV안정제 및 부식방지제 등과 같은 첨가제를 각각 3%이하로 첨가하여 조성하였다.The electrolyte which has a great influence on the characteristics of the aluminum electrolytic capacitor is 20-30% by hydrogen, one or two or more selected from the group consisting of organic acid, inorganic acid and salt thereof in a conventional protonic polar solvent of 70-80%. An additive such as an absorbent, an SPV stabilizer, and an anticorrosive agent was added at 3% or less, respectively.
이때, 주용매인 프로톤성 극성용매는 에탄올, 프로판올, 부탄올, 펜탄돌, 헥산올, 시클로 부탄올, 시클로 펜탄올, 시클로 헥산올, 및 벤질알콜 등의 1가 알콜류, 에틸렌 글리콜, 프로필렌 글리콜, 글리세린, 메톡시 에탄올, 에톡시 에탄올, 메톡시 프로필렌 글리골, 디메톡시 프로판올, 메틸 셀로솔브(Methyl Cellosolve), 및 에틸셀로솔브(Ethyl Cellosolve)등의 다가알콜 및 알콜 에테르류로 이루어지는 그룹 중에서 선택된 1종 또는 2종 이상이 사용된다.At this time, the protonic polar solvent as the main solvent is monohydric alcohols such as ethanol, propanol, butanol, pentanol, hexanol, cyclobutanol, cyclopentanol, cyclohexanol, and benzyl alcohol, ethylene glycol, propylene glycol, glycerin, 1 type selected from the group consisting of polyhydric alcohols and alcohol ethers such as methoxy ethanol, ethoxy ethanol, methoxy propylene glycol, dimethoxy propanol, methyl cellosolve, and ethyl cellosolve Or two or more kinds are used.
또한, 전해질로는 유기산, 무기산 및 이들의 염으로 이루어진 그룹중에서 선택된1종 또는 2종이상이 사용되는데, 유기산으로는 초산(Acetic Acid), 프로피온산(Propionic Acid)등의 지방족 모노 카르본산; 말론산(Malonic Acid), 글루타르산(Glutaric Acid), 아디핀산(Adipic Acid), 피메릭산(Pimeric Acid), 아제라익산(Azelaic Acid), 세바신산(Sebacic Acid), 데칸디카르본산(Decanedioci Acid) 및 말레인산(Maleic Acid)등의 지방족 디카르본산과; 안식향산(Benzoic Acid), 프탈산(Phthalic Acid), 및 살리실산(Salicylic Acid)등의 방향족 카르본산이 사용되며. 무기산으로는 붕산(Boric Acid), 인산(Phosphoric Acid), 규산(Silicic Acid) 및 BF4H(Fluoboric Acid)등이 사용된다.As the electrolyte, one or two or more selected from the group consisting of organic acids, inorganic acids and salts thereof are used. Examples of the organic acids include aliphatic monocarboxylic acids such as acetic acid and propionic acid; Malonic Acid, Glutaric Acid, Adipic Acid, Pimeric Acid, Azelaic Acid, Sebacic Acid, Decanediociic Acid And aliphatic dicarboxylic acids such as maleic acid; Aromatic carboxylic acids such as Benzoic Acid, Phthalic Acid, and Salicylic Acid are used. Examples of the inorganic acid include boric acid, phosphoric acid, silicic acid, and BF 4 H (Fluoboric Acid).
그러나 상기와 같이 조성되는 알루미늄 전해 콘덴서용 전해액은 전해액 내에서의 반응만을 고려하였기 때문에, 전도도가 좋은 전해액일지라도 SPV가 낮아지는 단점을 가질수밖에 없었다.However, since the electrolytic solution for aluminum electrolytic capacitors prepared as described above considers only the reaction in the electrolytic solution, the electrolytic solution having a good conductivity has a disadvantage in that the SPV is lowered.
이에, 본 발명자는 상기와 같은 종래 알루미늄 전해 콘덴서용 전해액의 단점을 해소하기 위하여 연구와 실험을 행하고 그 결과에 근거하여 본 발명을 제안 하게 된 것으로, 본 발명은 프로톤성 극성용매와 전해질로 조성되는 알루미늄 전해 콘덴서용 전해액에 비이온성 계면활성제를 적정 범위로 첨가하므로서 정전용량, 전도도등과같은 특성을 그대로 유지함과 동시에 화성성 및 내전압을 향상시킨 알루미늄 전해콘덴서용 전해액을 제공하고자 하는데, 그 목적이 있다.Thus, the present inventors have conducted research and experiments to solve the disadvantages of the conventional electrolytic capacitors for aluminum as described above, and proposed the present invention based on the results, and the present invention is composed of a protic polar solvent and an electrolyte. The purpose of the present invention is to provide an electrolytic solution for an aluminum electrolytic capacitor, in which a nonionic surfactant is added to an electrolytic solution for an aluminum electrolytic capacitor in an appropriate range while maintaining characteristics such as capacitance, conductivity, etc., and improving chemical resistance and withstand voltage.
이하, 본 발명을 설명한다.Hereinafter, the present invention will be described.
본 발명은 프로톤성 극성용매를 주용매로 하고 여기에 유기산, 무기산 및 이들의 염으로 이루어진 그룹중에서 선택된 1종 또는 2종 이상의 전해질을 첨가하는 것을 포함하여 조성되는 알루미늄 전해콘덴서용 전해액에 있어서,The present invention provides an electrolytic solution for aluminum electrolytic capacitors comprising a protic polar solvent as a main solvent and adding one or two or more electrolytes selected from the group consisting of organic acids, inorganic acids and salts thereof,
상기 전해액에 화학식(Ⅰ)의 일반식을 갖는 비이온성 계면 활성제를 전해액의 전체 중량에 대하여 5%이하로5% or less of the nonionic surfactant having the general formula of Formula (I) in the electrolyte, based on the total weight of the electrolyte.
첨가하여 조성되는 알루미늄 전해 콘덴서용 전해액에 관한 것이다.It relates to the electrolyte solution for aluminum electrolytic capacitors added and formed.
이하 본 발명을 보다 상세히 설명한다.Hereinafter, the present invention will be described in more detail.
상기한 목적을 달성하기 위하여 본 발명에서는 주용매인 프로톤성 극성 용매에 전해질 및 첨가제가 참가되어 조성되는 알루미늄 전해콘덴서용 전해액에 화학식(Ⅰ)(poly ethylene Glycol p-iso octylphenyl ether)과 같은 일반식을 갖는 비이온성 계면 활성제를 전체 전해액 중량에 대하여 5%이하로 첨가하여 본 발명의 전해액을 조성함이 바람직한데, 그 이유는 다음과 같다.In order to achieve the above object, in the present invention, a general formula such as polyethylene glycol p-iso octylphenyl ether is used in an electrolytic solution for aluminum electrolytic capacitors in which an electrolyte and an additive are added to a protic polar solvent as a main solvent. It is preferable to form the electrolyte solution of the present invention by adding a nonionic surfactant having a weight of 5% or less with respect to the total electrolyte solution, for the following reasons.
비이온성 계면 활성제는 전해 콘덴서내에서 전극과 산화피막, 전해액 사이에서 화학반응이 일어날 때 화학적 상태의 안정화에 기여하는 성분으로서, 그 첨가량이 전해액 전체 중량에 대하여 5% 이상일 경우에는 상기 효과가 포화될 뿐만 아니라 전해액의 점도가 증가하여 비저항이 증가되므로서 전도도가 저하되며, 제품화시 Al박막 내부까지 전해액의 침투가 용이하지 못한 문제점이 있기 때문이다.The nonionic surfactant is a component that contributes to stabilization of the chemical state when a chemical reaction occurs between the electrode, the oxide film, and the electrolyte in the electrolytic capacitor, and when the addition amount is 5% or more based on the total weight of the electrolyte, the effect is saturated. In addition, the conductivity of the electrolyte decreases as the specific resistance increases due to an increase in the viscosity of the electrolyte, and it is not easy to penetrate the electrolyte to the inside of the Al thin film during commercialization.
이때, 비이온성 계면활성제는 n=9~10이고, Conco Nix-100, Igepal CA-630, Neutronyx 605, 및 Triton X-100으로 이루어진 그룹중에서 선택된 1종 또는 2종이상을 첨가함이 보다 바람직하다.In this case, the nonionic surfactant is n = 9 ~ 10, it is more preferable to add one or two or more selected from the group consisting of Conco Nix-100, Igepal CA-630, Neutronyx 605, and Triton X-100. .
이하, 실시예를 통하여 본 발명을 보다 구체적으로 설명한다.Hereinafter, the present invention will be described in more detail with reference to Examples.
[실시예]EXAMPLE
하기표 1과 같이 알루미늄 전해 콘덴서용 전해액을 조성시킨다음, 전해 콘덴서에 적용시켜 비저항 및 내전압을 측정하고 그 결과를 하기표 2에 나타내었다.The electrolytic solution for aluminum electrolytic capacitors was prepared as shown in Table 1, and then applied to the electrolytic capacitors to measure specific resistance and breakdown voltage, and the results are shown in Table 2 below.
이때, 비이온성 계면 활성제로는 Triton X-100을 사용하였다. 그리고 비저항은 25℃에서 전도도 미터(Conductivity Meter)를 이용하여 측정하고, 내전압은 상온에서 순도 99.99%의 Al박을 전극으로 하고 양극 알루미늄 박에 5mA/㎠의 정전류를 흘려 더 이상 전압이 상승하지 못하고 알루미늄박 표면에 계속 형성되면 산화피막이 파괴되어 불꽃이 튀는 전압을 내전압(SPV)으로 정하였다.At this time, Triton X-100 was used as the nonionic surfactant. The specific resistance is measured by using a conductivity meter at 25 ° C. Withstand voltage is a 99.99% purity Al foil as an electrode at room temperature, and a constant current of 5 mA / cm 2 flows through the aluminum foil to prevent the voltage from rising anymore. When the film was continuously formed on the surface of the aluminum foil, the oxide film was broken and the sparking voltage was set as the breakdown voltage (SPV).
*EG:에틸렌 글리콜(Ethylene Glycol)* EG: Ethylene Glycol
DEG:디에틸렌 글리콜(Di-Ethylene Glycol)DEG: Diethylene glycol (Di-Ethylene Glycol)
BA:벤질알콜(Benzyl Alchol)BA: Benzyl Alchol
EC:에칠셀로솔브(Ethyl Cellosolve)EC: Ethyl Cellosolve
Am.2.4:암모늄-2-4-디메틸-4-카르보메톡시 언테카네 디카르복시레이트(Ammonium 2.4-dimethy-4-carbome thoxy undecamedicarboxylate)Am.2.4: Ammonium 2.4-4-dimethy-4-carbome thoxy undecamedicarboxylate
Am.P:암모늄 펜타보레이트(Ammonium Pentaborate)Am.P: Ammonium Pentaborate
M:마니톨(Mannitol)M: Mannitol
P-NBA:파라 니트로 벤질 알콜(P-Nitro Benzyl Alchol)P-NBA: Paranitro benzyl alcohol (P-Nitro Benzyl Alchol)
Am.H:암모늄 하이포 포스파이트(Ammonium Hypophosphite)Am.H: Ammonium Hypophosphite
상기표 2에 나타난 바와 같이, 본 발명의 범위를 만족하는 발명에(a~d)의 경우에는 본 발명의 범위를 만족하지 못하는 종래의 경우인 비교예(1~4)에 비하여 비저항 및 내전압 특성이 동등이상으로 우수함을 알 수 있다.As shown in Table 2, in the case of the invention (a ~ d) to satisfy the scope of the present invention, the specific resistance and withstand voltage characteristics compared to the comparative examples (1 to 4) of the conventional case that does not satisfy the scope of the present invention It can be seen that this is superior to the equivalent.
상술한 바와같이, 본 발명은 비 이온성 계면 활성제를 적정범위로 첨가하므로서 정전용량, 전도도 등과 같은 특성을 그대로 유지함과 동시에 화성성 및 내전압이 향상된 알루미늄 전해 콘덴서를 제공할수 있는 효과가 있다.As described above, the present invention has an effect of providing an aluminum electrolytic capacitor having improved chemical resistance and withstand voltage while maintaining properties such as capacitance and conductivity while adding a nonionic surfactant in an appropriate range.
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