KR940003740B1 - Electrolyte and electrolytic condenser - Google Patents
Electrolyte and electrolytic condenser Download PDFInfo
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- KR940003740B1 KR940003740B1 KR1019910020959A KR910020959A KR940003740B1 KR 940003740 B1 KR940003740 B1 KR 940003740B1 KR 1019910020959 A KR1019910020959 A KR 1019910020959A KR 910020959 A KR910020959 A KR 910020959A KR 940003740 B1 KR940003740 B1 KR 940003740B1
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- 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
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Abstract
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Description
제1도는 이 발명의 전해액을 사용한 전해 콘덴서의 105℃ 조건에서의 사용 시간에 따른 정전 용량(capacity) 변화량 관계도이다.1 is a relationship diagram of capacitance change according to the use time at 105 ° C. of an electrolytic capacitor using the electrolyte solution of the present invention.
제2도는 이 발명의 전해액을 사용한 전해 콘덴서의 105℃ 조건에서의 사용 시간에 따른 손실율 관계도이다.2 is a graph showing the relationship between the loss rate according to the use time of the electrolytic capacitor using the electrolyte solution of the present invention at 105 ° C.
제3도는 이 발명의 전해액을 사용한 전해 콘덴서의 105℃ 조건에서의 사용 시간에 따른 누설전류 관계도이다.3 is a leakage current relationship diagram according to the use time of the electrolytic capacitor using the electrolyte solution of the present invention at 105 ° C.
이 발명은 고압용 알루미늄 전해 콘덴서에 관한 것으로서, 상세하게는 고압용 알루미늄 전해 콘덴서의 전해액이다.The present invention relates to a high pressure aluminum electrolytic capacitor, and in detail, is an electrolyte of a high pressure aluminum electrolytic capacitor.
알루미늄 전해 콘덴서는 전극으로 알루미늄 박판을 사용하고 전해질로서 암모늄에 염류와 쌍극성 유기 용매에 용해된 유기산으로 구성되어 있는 액체 전해질을 사용하여 단위 면적당 정전 용량이 높아 부품의 소형, 고용량화에 적합한 콘덴서의 형태이다.The aluminum electrolytic capacitor uses a thin sheet of aluminum as an electrode and a liquid electrolyte composed of salts in ammonium and an organic acid dissolved in a bipolar organic solvent as an electrolyte, and has a high capacitance per unit area. to be.
지금까지의 전해 콘덴서의 전해액은 암모늄 펜타 보레이트(ammonium pentaborate), 암모늄 아디페이트(ammonium adipate) 테트라에틸암모늄 아젤레이트 등과 같은 암모늄염 화합물과, 붕산(boric acid), 피크르산(picric acid)와 같은 2가 유기 카르복실산이 에틸렌 글리콜, 디메틸아세트아미드, 메틸아세트아미드와 같은 쌍극성 유기용매 및 물의 혼합 용매에 용해된 액체 전해액이 사용되어 왔다(영국특허출원 제992,463호 및 대한민국 특허공고 제90-7898).The electrolytic solutions of the electrolytic capacitors to date have been ammonium salt compounds such as ammonium pentaborate, ammonium adipate tetraethylammonium azelate, and divalent organic compounds such as boric acid and picric acid. Liquid electrolytes in which carboxylic acid is dissolved in a mixed solvent of a dipolar organic solvent such as ethylene glycol, dimethylacetamide, methylacetamide and water have been used (British Patent Application No. 992,463 and Korean Patent Publication No. 90-7898).
그러나 상기의 전해액은 고온에서 수화 반응에 의해 전극의 유전체 산화피막을 노화시키고 가스를 다량 발생시키며 저온에서는 전해질의 용해도가 급격히 떨어져 전해질이 석출됨으로써 이를 전해액을 사용한 콘덴서의 작동 온도가 -45∼85℃로 제한될 뿐만 아니라 인가 시간과 온도에 의해 콘덴서의 물리화학적 특성이 변화되는 등 문제점이 있어 왔다.However, the electrolyte solution aging the dielectric oxide film of the electrode by the hydration reaction at a high temperature, and generates a large amount of gas, and at low temperatures, the electrolyte solubility drops sharply, so that the electrolyte is precipitated, the operating temperature of the capacitor using the electrolyte solution is -45 ~ 85 ℃ In addition to being limited to this, there have been problems such as the change in the physicochemical characteristics of the capacitor by the application time and temperature.
이 발명은 상기의 문제점들을 해결하기 위하여 안출된 것으로서, 콘덴서의 물리화학적 특성이 온도와 시간에 의해 영향을 받지 않는 전해액과 이를 사용한 전해 콘덴서의 제공을 목적으로 한다.The present invention has been made to solve the above problems, and an object of the present invention is to provide an electrolyte and an electrolytic capacitor using the same, in which the physical and chemical properties of the capacitor are not affected by temperature and time.
상기 목적을 달성하기 위하여, 이 발명은 에틸렌 글리콜(ethylene glycol)과 τ-부틸로락톤(buthyloacton)의 혼합물로 된 전해 용매에 전해질로 암모늄 세바세이트(ammonium sebacate) 및 암모늄 도데칸디오에이트(ammonium dodecandioate)를 용해한 전해액을 제공한다.In order to achieve the above object, the present invention is ammonium sebacate and ammonium dodecandioate as an electrolyte in an electrolytic solvent composed of a mixture of ethylene glycol and τ-butylolactone. The electrolyte solution which melt | dissolved) is provided.
이 발명의 전해 용매는 에틸렌 글리콜과 τ-부틸로락톤의 혼합물로서 에틸렌 글리콜 60∼70중량%, τ-부틸로락톤 30∼40중량%로 이루어진다.The electrolytic solvent of this invention consists of 60-70 weight% of ethylene glycol and 30-40 weight% of τ-butylolactone as a mixture of ethylene glycol and (tau)-butyrolactone.
이 발명의 전해질은 암모늄 세바세이트 이 8∼12중량%, 암모늄 도데칸디오에이트이 1∼3중량%로 상기의 전해 용매에 첨가된다.The electrolyte of the present invention is added to the electrolytic solvent at 8 to 12% by weight of ammonium sebacate and 1 to 3% by weight of ammonium dodecanedioate.
이 발명의 전해액의 전해질 농도는 9∼15중량%로 중고압용 콘덴서 전해액으로 적합한 특정 전도도를 갖는다.The electrolyte concentration of the electrolyte solution of this invention is 9 to 15% by weight, and has a specific conductivity suitable as a medium-pressure capacitor electrolyte.
또한, 이 발명은 알루미늄을 전극으로 사용하고, 에틸렌 글리콜 및 τ-부틸로락톤으로 이루어진 혼합 용매에 암모늄 세바세이트 및 암모늄 도데칸 디오에이트를 용해한 전해액을 사용한 알루미늄 전해 콘덴서를 제공한다.In addition, the present invention provides an aluminum electrolytic capacitor using an electrolyte solution in which aluminum is used as an electrode and an ammonium sebacate and ammonium dodecane dioate are dissolved in a mixed solvent composed of ethylene glycol and τ-butylolactone.
이 콘덴서는 온도에 따른 물리화학적 특성이 안정하며 사용 온도범위 -55∼105℃로 종래의 에틸렌 글리콜에 암모늄 펜타보테이트 및 붕산을 용해한 전해액을 사용한 콘덴서의 사용온도 범위 -25∼85℃에 비하여, 저, 고온 특성이 좋다.The condenser has a stable physicochemical characteristic according to the temperature, and the use temperature range is -55 to 105 ° C, compared to the use temperature range of -25 to 85 ° C, which uses an electrolyte solution in which ammonium pentabotate and boric acid is dissolved in conventional ethylene glycol. Low temperature characteristics are good.
또한 전해 용매에 물을 사용하지 않음으로서 전해액에 의해 전극의 유전체 산화 피막의 노화를 방지하고 가스(수소)의 발생량을 최소화 할 수 있어 시간에 따른 성능의 저하가 발생하지 않는 우수한 특성을 갖는다.In addition, by not using water in the electrolytic solvent, it is possible to prevent aging of the dielectric oxide film of the electrode and minimize the amount of gas (hydrogen) generated by the electrolytic solution, so that the performance does not decrease with time.
다음에 이 발명의 바람직한 실시예를 제시한다. 그러나 다음의 실시예는 이 발명을 보다 쉽게 이해하기 위하여 제공되는 것일뿐 이 발명이 이 실시예에 한정되는 것은 아니다.Next, a preferred embodiment of this invention is presented. However, the following examples are provided only for better understanding of the present invention, and the present invention is not limited to these examples.
[실시예 1]Example 1
에틸렌 글리콜 63중량%와 τ-부틸로락톤 25중량%, 암모늄 세바세이트(ammonium sebacate) 10중량%, 암모늄 도데칸디오에이트(ammonium dodecandioate) 2중량%를 용해한 전해질 용액의 비저항 값은 1026Ωㆍcm/25℃이고, 회화전압(sparkvoltage)는 520볼트(volt)였다.The specific resistance value of the electrolyte solution in which 63% by weight of ethylene glycol, 25% by weight of tau-butyrolactone, 10% by weight of ammonium sebacate, and 2% by weight of ammonium dodecandioate was 1026Ωcm / 25 ° C. and spark voltage was 520 volts.
이 용액을 전해액으로 하여 전극을 알루미늄 박판을 사용하여 제조한 알루미늄 전해 콘덴서는 초기 물리적 특성이 용량 222μF, 손실율 11%, 누설전류 12μA, 임피던스 4Ω의 값을 나타내었다. 또한 상기 전해액으로 제조된 알루미늄 전해 콘덴서의 항구성 실험을 인가하여 105℃의 항온조에서 전압인가 시간에 따른 용량 변화율, 손실 변화량 및 누설전류를 측정하여 그 결과를 각각 제1도, 제2도, 제3도에 나타내었다.The aluminum electrolytic capacitor produced by using this solution as an electrolyte using an aluminum thin plate exhibited initial physical properties of 222 μF capacity, 11% loss rate, 12 μA leakage current, and 4 Ω impedance. In addition, by applying the endurance test of the aluminum electrolytic capacitor made of the electrolyte solution, the capacity change rate, loss change amount and leakage current according to the voltage application time were measured in a 105 ° C thermostat, and the results are shown in FIGS. 1, 2, and 3, respectively. It is shown in the figure.
[비교예 1]Comparative Example 1
에틸렌 글리콜 61.5중량% 및 물 10중량%로 암모늄 펜타보레이트(ammonium pentaborate) 16.5 중량%, 붕산(boric acid) 13중량%를 용해한 전해질 용액은 비저항 값은 1650Ωㆍcm/25℃이고, 회화전압(sparkvoltage)는 470볼트(volt)였다.Electrolyte solution in which 16.5% by weight of ammonium pentaborate and 13% by weight of boric acid in 61.5% by weight of ethylene glycol and 10% by weight of water had a specific resistance of 1650 Ωcm / 25 ° C and a spark voltage. ) Was 470 volts.
이 용액을 전해액으로 하여 전극을 알루미늄 박판을 전극으로 사용한 알루미늄 전해 콘덴서는 초기 물리적 특성이 용량 215μF, 손실율 20%, 누설전류 35μA, 임피던스 5Ω의 값을 나타내었다. 또한 상기 전해액으로 제조된 알루미늄 전해 콘덴서의 정격 전압을 인가하여 105℃의 항온조에서 전압인가 시간에 따른 용량 변화율, 손실 변화량 및 누설전류를 측정하여 그 결과를 각각 제1도, 제2도, 제3도에 나타내었다.An aluminum electrolytic capacitor using this solution as an electrolyte and using an aluminum thin plate as an electrode exhibited initial physical properties of 215 μF capacity, 20% loss rate, 35 μA leakage current, and 5 Ω impedance. In addition, by applying the rated voltage of the aluminum electrolytic capacitor made of the electrolyte solution and measuring the capacity change rate, the loss change amount and the leakage current according to the voltage application time in a 105 ° C thermostat, and the results are shown in FIGS. 1, 2, 3 It is shown in the figure.
상기의 결과 이 발명의 알루미늄 전해 콘덴서 전해액을 사용한 알루미늄 전해 콘덴서는 종래 전해액에 비하여 정전 용량이 크고, 손실과 누설전류가 적고, 온도와 시간에 따른 물리화학적 특성의 변화가 적어서 중고압용 콘덴서 용도로 적합하다.As a result, the aluminum electrolytic capacitor using the aluminum electrolytic capacitor electrolytic solution of the present invention has a higher electrostatic capacity, less loss and leakage current, and less change in physicochemical characteristics with temperature and time than the conventional electrolytic solution, which is suitable for the use of a high pressure capacitor. Do.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019910020959A KR940003740B1 (en) | 1991-11-22 | 1991-11-22 | Electrolyte and electrolytic condenser |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019910020959A KR940003740B1 (en) | 1991-11-22 | 1991-11-22 | Electrolyte and electrolytic condenser |
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| Publication Number | Publication Date |
|---|---|
| KR930011024A KR930011024A (en) | 1993-06-23 |
| KR940003740B1 true KR940003740B1 (en) | 1994-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| KR1019910020959A Expired - Fee Related KR940003740B1 (en) | 1991-11-22 | 1991-11-22 | Electrolyte and electrolytic condenser |
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| KR930011024A (en) | 1993-06-23 |
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