KR101041883B1 - An electrolyte for an electrolytic condenser - Google Patents
An electrolyte for an electrolytic condenser Download PDFInfo
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- KR101041883B1 KR101041883B1 KR1020080067871A KR20080067871A KR101041883B1 KR 101041883 B1 KR101041883 B1 KR 101041883B1 KR 1020080067871 A KR1020080067871 A KR 1020080067871A KR 20080067871 A KR20080067871 A KR 20080067871A KR 101041883 B1 KR101041883 B1 KR 101041883B1
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- high temperature
- electrolyte solution
- electrolytic capacitor
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- electrolyte
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- 239000003792 electrolyte Substances 0.000 title description 7
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 33
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000003990 capacitor Substances 0.000 claims abstract description 26
- 239000008151 electrolyte solution Substances 0.000 claims abstract description 17
- 239000005711 Benzoic acid Substances 0.000 claims abstract description 13
- 235000010233 benzoic acid Nutrition 0.000 claims abstract description 13
- 239000002253 acid Substances 0.000 claims abstract description 10
- 239000002904 solvent Substances 0.000 claims abstract description 7
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 claims description 9
- BNUHAJGCKIQFGE-UHFFFAOYSA-N Nitroanisol Chemical compound COC1=CC=C([N+]([O-])=O)C=C1 BNUHAJGCKIQFGE-UHFFFAOYSA-N 0.000 claims description 7
- 150000003839 salts Chemical class 0.000 abstract description 8
- 229910052751 metal Inorganic materials 0.000 abstract description 7
- 239000002184 metal Substances 0.000 abstract description 7
- 150000002828 nitro derivatives Chemical class 0.000 abstract description 5
- 230000008961 swelling Effects 0.000 abstract description 4
- 229940021013 electrolyte solution Drugs 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 9
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 4
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 235000011037 adipic acid Nutrition 0.000 description 2
- 239000001361 adipic acid Substances 0.000 description 2
- 150000003863 ammonium salts 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
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical class OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 159000000001 potassium salts Chemical class 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
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/022—Electrolytes; Absorbents
- H01G9/035—Liquid electrolytes, e.g. impregnating materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/145—Liquid electrolytic capacitors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/13—Energy storage using capacitors
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
260℃의 고온에서도 패드 및 벤트 부풀음 등의 외관변화가 없으며, 리플로 후에도 150℃의 초고온에서 전해콘덴서 본래의 기능을 다할 수 있는 초고온 신뢰성 특성을 갖고 있는 전해콘덴서용 전해액이 제공된다.There is no change in appearance such as pad and vent swelling even at a high temperature of 260 ° C., and an electrolyte solution for an electrolytic capacitor having ultra-high reliability characteristics capable of fulfilling the original function of the electrolytic capacitor at an extremely high temperature of 150 ° C. after reflow is provided.
주용매인 에틸렌글리콜과, 1~10wt%의 아젤릭산과, 1~10wt%의 벤조산과, 1~5wt%의 금속염과, 0.05~3wt%의 니트로화합물을 포함하는 전해콘덴서용 전해액을 제공함으로써 그 목적이 달성된다.By providing an electrolytic capacitor electrolyte solution containing ethylene glycol as the main solvent, 1-10 wt% azelic acid, 1-10 wt% benzoic acid, 1-5 wt% metal salt, and 0.05-3 wt% nitro compound. This is achieved.
Description
본 발명은 전해콘덴서용 전해액에 관한 것으로서, 보다 상세하게는 에틸렌글리콜을 주용매로 하여 고온 리플로 특성과 신뢰성 특성이 우수한 전해콘덴서용 전해액에 관한 것이다.The present invention relates to an electrolyte for an electrolytic capacitor, and more particularly, to an electrolyte for an electrolytic capacitor having excellent high temperature reflow characteristics and reliability characteristics using ethylene glycol as a main solvent.
전해콘덴서는 전기부품의 하나로 다양한 전자기 부품에 대하여 주로 전원 회로용이나 디지털 회로의 노이즈 필터용 등으로 사용되는 것으로서, 알루미늄 전해콘덴서, 탄탈전해콘덴서, 세라믹전해콘덴서, 필름전해콘덴서, 전기이중층전해콘덴서 등 여러 가지가 있다. 특히, 회로의 소형화가 진행되면서 SMD type의 전해 콘덴서용 전해액도 다양하게 개발되어 왔다. 전해액의 리플로 특성과 고온신뢰성 특성을 만족시키기 위해 부틸로락톤에 이미딘염을 주용질로 한 전해액을 제공한 적이 있었으나 상기 전해액은 250℃ 리플로 특성과 105℃신뢰성 특성은 만족하나 250℃이상 즉 260℃의 고온 리플로 테스트시 패드(pad) 및 벤트(vent) 부풀음이 발생하고 150℃의 초고온에서는 전해콘덴서 본래의 기능을 다하지 못하는 문제점이 있었다.An electrolytic capacitor is one of the electrical components used mainly for power circuits and noise filters of digital circuits for various electromagnetic components. Aluminum electrolytic capacitors, tantalum electrolytic capacitors, ceramic electrolytic capacitors, film electrolytic capacitors, electric double layer electrolytic capacitors, etc. There are many ways. In particular, as miniaturization of circuits has progressed, various electrolyte solutions for SMD type electrolytic capacitors have been developed. In order to satisfy the reflow characteristics and the high temperature reliability characteristics of the electrolyte solution, an electrolyte solution containing imidine salt as the main solute has been provided. However, the electrolyte solution satisfies the 250 ° C reflow property and the 105 ° C reliability property, but is not less than 250 ° C. In the high temperature reflow test of 260 ° C., pads and vents swelled, and at the high temperature of 150 ° C., there was a problem in that the electrolytic capacitor did not perform its original function.
따라서 본 발명의 목적은 상기와 같은 종래기술의 문제점을 해결하기 위한 것으로서, 260℃의 고온에서도 패드 및 벤트 부풀음 등의 외관변화가 없으며, 리플로 후에도 150℃의 초고온에서 전해콘덴서 본래의 기능을 다할 수 있는 초고온 신뢰성 특성을 갖고 있는 전해콘덴서용 전해액을 제공함에 있다.Therefore, an object of the present invention is to solve the problems of the prior art as described above, there is no change in the appearance of the pad and vent swelling even at a high temperature of 260 ℃, and after the reflow to perform the original function of the electrolytic capacitor at a very high temperature of 150 ℃ The present invention provides an electrolytic capacitor electrolyte having ultra high temperature reliability.
상기한 바와 같은 본 발명의 목적은 종래기술과는 달리 표면 실장형(SMD TYPE)에는 잘 사용하지 않던 에틸렌글리콜을 주용매로 하고 또한 종래의 전해액에서와는 달리 금속염을 사용하여 260℃ 고온 리플로 특성과 150℃ 고온 신뢰성을 동시에 만족시키는 전해콘덴서용 전해액을 제공할 수 있게 된다.As described above, the object of the present invention is to use ethylene glycol, which was not used well in the surface mount type (SMD TYPE), as a main solvent, and to use a metal salt unlike the conventional electrolyte solution, and to achieve high temperature reflow characteristics at 260 ° C. It is possible to provide an electrolytic capacitor electrolyte solution that satisfies the high temperature reliability of 150 ℃ at the same time.
상기한 바와 같은 본 발명의 목적을 달성하기 위하여 본 발명은, 주용매인 에틸렌글리콜과, 1~10wt%의 아젤릭산과, 1~10wt%의 벤조산과, 1~5wt%의 금속염과, 0.05~3wt%의 니트로화합물을 포함하는 전해콘덴서용 전해액을 제공한다.In order to achieve the object of the present invention as described above, the present invention, the main solvent is ethylene glycol, 1-10 wt% azelic acid, 1-10wt% benzoic acid, 1-5wt% metal salt, 0.05-3wt It provides an electrolytic capacitor electrolyte solution containing nitro compound of%.
상기에서 금속염은 포탄슘염을 사용함이 바람직하고, 상기 니트로화합물은 p-니트로 아니솔을 사용함이 바람직하다.In the above metal salt, potassium salt is preferably used, and the nitro compound is preferably p-nitro anisole.
본 발명의 전해콘덴서용 전해액은 표면실장형(SMD TYPE)에는 잘 사용하지 않던 에틸렌 글리콜을 주용매로 하고 금속염인 포탄슘염을 사용하므로서 250℃이상의 고온 리플로 특성이 우수하고 150℃이상의 초고온 신뢰성 특성이 우수한 콘덴서를 제공할 수 있게 되어 고온에서 사용되는 콘덴서의 제공이 용이한 효과를 얻을 수 있게 된다.The electrolyte solution for the electrolytic capacitor of the present invention is excellent in high temperature reflow characteristics of 250 ° C. or higher and ultra high temperature reliability characteristics of 150 ° C. or higher by using ethylene glycol, which is not well used in surface mount type, as the main solvent and potassium salt, which is a metal salt. Since this excellent capacitor can be provided, the effect of providing the capacitor used at high temperature can be easily obtained.
본 발명의 실시를 위해 주용매로는 에틸렌글리콜을 사용한다.Ethylene glycol is used as the main solvent for the practice of the present invention.
본 발명에서 사용하는 아젤릭산(Azelaic Acid)은 콘덴서의 비저항과 내전압특성을 좌우하는 것으로 함량이 1wt%이하에서는 비저항이 높아 tanδ특성이 저하되고, 10wt%이상이 되면 내전압 특성 및 고온특성이 저하되기 때문에 본 발명에서의 아젤릭산 사용은 1~10wt%로 정한다.Azelaic acid used in the present invention depends on the resistivity and withstand voltage characteristics of the capacitor, and the content of the resistivity is high at a content of 1 wt% or less, and thus the tanδ characteristic is lowered. The use of azelic acid in the present invention is determined to be 1 ~ 10wt%.
또한 본 발명에서 사용하는 벤조산은 콘덴서의 고온내열성 특성을 좌우하는 것으로 그 첨가량이 1wt%이하이거나 10wt%이상이 되면 고온내열특성이 저하될 수 있어서 신뢰성 보증에 문제가 될 수 있으므로 본 발명에서의 벤조산 첨가는 1~10wt%로 정한다.In addition, the benzoic acid used in the present invention depends on the high temperature heat resistance characteristics of the condenser. If the amount is 1 wt% or less or 10 wt% or more, the benzoic acid in the present invention may be a problem in reliability assurance because the high temperature heat resistance may be deteriorated. Addition is set at 1-10 wt%.
또한 본 발명에서 사용하는 금속염, 바람직하게는 포탄슘염은 약 1~5wt%를 사용함이 바람직한데, 상기 금속염은 콘덴서의 고온 내열성 특성을 좌우 하는 것으로 1wt%이하나 5wt%이상을 사용하게 되면 전해액의 고내열성 및 내전압성 특성이 저하되므로 상기 범위로 사용한다.In addition, the metal salt used in the present invention, preferably potassium salt is preferably used in about 1 ~ 5wt%, the metal salt is used to determine the high temperature heat resistance characteristics of the capacitor is less than 1wt% but 5wt% or more of the electrolyte solution Since high heat resistance and voltage resistance characteristics fall, it is used in the said range.
본 발명에서의 니트로화합물은 p-니트로 아니솔을 사용함이 바람직한데 그 함량은 0.05~3wt%로 한다. 왜냐하면 상기 니트로 화합물은 고온리플로 공정에서 발생하는 가스를 억제하여 신뢰성 특성을 우수하게 하나 0.05wt% 이하에서는 목적하는 특성효과가 적게 되고, 3wt%이상이 첨가되면 내전압 특성 등이 저하되는 등 역효과가 나기 때문이다.The nitro compound in the present invention is preferably used p-nitro anisole, the content is 0.05 ~ 3wt%. Because the nitro compound suppresses the gas generated in the high temperature reflow process, it has excellent reliability characteristics, but less than 0.05wt% of the desired characteristic effect, and when 3wt% or more is added, adverse effects such as lowering the withstand voltage characteristics Because I am.
이하에서는 바람직한 본 발명의 실시예를 종래예와 비교예들을 통하여 보다 상세하게 설명한다. 여기에서의 실시예는 본 발명을 보다 상세히 설명하기 위한 예이지 본 발명을 이로 한정하는 것은 아니다.Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to conventional examples and comparative examples. Examples herein are examples for explaining the present invention in more detail, but the present invention is not limited thereto.
이하 실시 예에서의 %는 wt%를 나타낸다.In the following examples,% represents wt%.
[종래 예][Original example]
전해액 조성 중 감마부틸로락톤 75%와 프탈산이미딘염 25%로 구성되는 전해액을 사용하는 콘덴서를 택하였다.In the electrolyte composition, a capacitor using an electrolyte solution composed of gamma butyrolactone 75% and imidine phthalate salt 25% was selected.
[비교예 1]Comparative Example 1
전해액 조성을 에틸렌글리콜 87%, 아젤릭산 5%, 벤조산 5%, 암모늄염 2% 그리고 p-니트로아니솔 1%로 한 콘덴서를 사용하였다.A condenser having an electrolyte composition of 87% ethylene glycol, 5% azelic acid, 5% benzoic acid, 2% ammonium salt and 1% p-nitroanisole was used.
[비교예 2]Comparative Example 2
비교 예 2는 에틸렌글리콜 87%, 아디핀산 5%, 벤조산 5%, 포탄슘염 2% 그리고 p-니트로아니솔 1%의 조성으로 되는 전해액을 사용하는 콘덴서를 사용하였다.In Comparative Example 2, a capacitor using an electrolyte solution composed of 87% ethylene glycol, 5% adipic acid, 5% benzoic acid, 2% potassium salt, and 1% p-nitroanisole was used.
[비교예 3]Comparative Example 3
전해액 조성을 에틸렌글리콜 87%, 아젤릭산 11%, 벤조산 5%, 포탄슘염 2%, p-니트로아니솔 1%로 한 콘덴서를 사용하였다.A condenser having an electrolyte composition of 87% ethylene glycol, 11% azelic acid, 5% benzoic acid, 2% potassium salt, and 1% p-nitroanisole was used.
[본 발명의 실시예]Embodiment of the Invention
본 발명의 실시 예에서는 에틸렌글리콜 87%, 아젤릭산 5%, 벤조산 5%, 포탄슘염 2%, p-니트로아니솔 1%를 함유하는 전해액을 사용하는 콘덴서를 만들었다.In the embodiment of the present invention, a condenser using an electrolyte solution containing 87% ethylene glycol, 5% azelic acid, 5% benzoic acid, 2% potassium salt, and 1% p-nitroanisole was made.
상기와 같은 종래 예, 비교 예들 및 본 발명의 실시 예로 된 콘덴서의 적용 예를 동일 조건에서 실험한 결과를 표1에 나타내었다.Table 1 shows the results of the experiments under the same conditions of the conventional examples, the comparative examples and the application examples of the embodiment of the present invention.
<표 1>TABLE 1
16wv 220㎌ φ10ㅧ 10(mm)16wv 220㎌ φ10 ㅧ 10 (mm)
*리플로 특성 : 260℃ 5초 리플로 전 후 "L"치수 변화* Reflow Characteristics: "L" dimension change after 260 ℃ for 5 seconds before reflow
상기 표로부터 확인할 수 있듯이 종래의 감마부틸로락톤과 프탈산이미딘염만을 사용한 전해액으로 된 것은 패드(pad), 벤트(vent) 부풀음이 발생하였고, 특히 150℃ 고온에서는 액출이 발생하여 고장이 일어났다.As can be seen from the above table, the conventional electrolyte solution using only gamma butyrolactone and imidine phthalate salt produced pad and vent swelling, and especially at 150 ° C. high temperature caused leakage and failure.
또한 주 용질로 아젤릭산과 벤조산, 암모늄염을 사용한 비교 예 1의 경우 고온 리플로 후 외관 변화가 발생하고 150℃ 고온 신뢰성 중 손실(tan δ) 특성 불량이 발생하였다.In addition, in Comparative Example 1 using azelic acid, benzoic acid, and ammonium salts as main solutes, the appearance change after high temperature reflow occurred, and a loss (tan δ) characteristic defect occurred during 150 ° C high temperature reliability.
주 용질로는 아디핀산과 벤조산, 포탄슘염을 함께 사용한 비교 예2의 경우에는 고온 리플로 후 외관 변화가 일어났고, 주 용질로 아젤릭산과 벤조산, 포탄슘염을 사용하였지만 아젤릭산을 본 발명의 범위(1~10wt%)보다 많게 11wt%를 사용한 비교 예 3의 경우 고온 리플로 후 벤트가 부푸는 불량이 발생하였다.In Comparative Example 2 using adipic acid, benzoic acid, and potassium salt as the main solutes, the appearance change occurred after high temperature reflow.Azelic acid, benzoic acid, and potassium salts were used as the main solutes. In the case of Comparative Example 3 using more than 11wt%), the swelling of the vent after the high temperature reflow occurred.
그러나 본 발명의 범위 내에서 주 용질로서 아젤릭산과 벤조산, 포탄슘염을 함께 첨가한 본 발명의 실시 예의 경우 고온 리플로 후 외관 변화 및 150℃ 고온 신뢰성 수명 특성이 우수한 것으로 파악 되었다.However, within the scope of the present invention, in the embodiment of the present invention, in which azelic acid, benzoic acid, and potassium salt were added together as the main solutes, the appearance change after the high temperature reflow and the high temperature reliability lifetime characteristics of 150 ° C were excellent.
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| JP2002064036A (en) * | 2000-08-21 | 2002-02-28 | Nippon Chemicon Corp | Electrolytic solution for electrolytic capacitor and electrolytic capacitor using it |
| JP2005303062A (en) * | 2004-04-13 | 2005-10-27 | Rubycon Corp | Electrolytic capacitor and electrolytic solution for driving the same |
| KR100780063B1 (en) * | 2006-08-30 | 2007-11-30 | 삼화전기주식회사 | An electrolyte for an electrolytic condenser |
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| JP2002064036A (en) * | 2000-08-21 | 2002-02-28 | Nippon Chemicon Corp | Electrolytic solution for electrolytic capacitor and electrolytic capacitor using it |
| JP2005303062A (en) * | 2004-04-13 | 2005-10-27 | Rubycon Corp | Electrolytic capacitor and electrolytic solution for driving the same |
| KR100780063B1 (en) * | 2006-08-30 | 2007-11-30 | 삼화전기주식회사 | An electrolyte for an electrolytic condenser |
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