KR100234950B1 - Electrolyte composition of aluminum electrolytic condenser - Google Patents
Electrolyte composition of aluminum electrolytic condenser Download PDFInfo
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- KR100234950B1 KR100234950B1 KR1019970028310A KR19970028310A KR100234950B1 KR 100234950 B1 KR100234950 B1 KR 100234950B1 KR 1019970028310 A KR1019970028310 A KR 1019970028310A KR 19970028310 A KR19970028310 A KR 19970028310A KR 100234950 B1 KR100234950 B1 KR 100234950B1
- Authority
- KR
- South Korea
- Prior art keywords
- ethylene glycol
- medium pressure
- present
- aluminum electrolytic
- pure water
- Prior art date
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 14
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 14
- 239000000203 mixture Substances 0.000 title abstract description 5
- 239000003792 electrolyte Substances 0.000 title description 11
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000008151 electrolyte solution Substances 0.000 claims abstract description 18
- SATJMZAWJRWBRX-UHFFFAOYSA-N azane;decanedioic acid Chemical compound [NH4+].[NH4+].[O-]C(=O)CCCCCCCCC([O-])=O SATJMZAWJRWBRX-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000003990 capacitor Substances 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- ACVYVLVWPXVTIT-UHFFFAOYSA-N phosphinic acid Chemical compound O[PH2]=O ACVYVLVWPXVTIT-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000000654 additive Substances 0.000 claims abstract description 5
- 230000000996 additive effect Effects 0.000 claims abstract description 5
- 239000002904 solvent Substances 0.000 claims abstract description 5
- 238000002360 preparation method Methods 0.000 abstract description 2
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 13
- JKTYGPATCNUWKN-UHFFFAOYSA-N 4-nitrobenzyl alcohol Chemical compound OCC1=CC=C([N+]([O-])=O)C=C1 JKTYGPATCNUWKN-UHFFFAOYSA-N 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- TVZISJTYELEYPI-UHFFFAOYSA-N hypodiphosphoric acid Chemical compound OP(O)(=O)P(O)(O)=O TVZISJTYELEYPI-UHFFFAOYSA-N 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- YNHYICDBIZUZLT-UHFFFAOYSA-N ethane-1,2-diol;silver Chemical compound [Ag].OCCO YNHYICDBIZUZLT-UHFFFAOYSA-N 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- LVJAURDIQBBQSX-UHFFFAOYSA-N phosphonophosphonic acid Chemical compound P(=O)(O)(O)P(=O)(O)O.P(=O)(O)(O)P(=O)(O)O LVJAURDIQBBQSX-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
- H01G9/022—Electrolytes; Absorbents
- H01G9/035—Liquid electrolytes, e.g. impregnating materials
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
본 발명은 전해액의 제조시 첨가되는 성분들의 조성과 그 첨가량을 적절히 제어하여, 전해액의 고전도도화를 이루어 제품화시 손실각 특성이 향상된 중압용 알루미늄 콘덴서의 전해액을 제공하고자 하는데, 그 목적이 있다.An object of the present invention is to provide an electrolytic solution of an aluminum capacitor for medium pressure in which the loss angle characteristic is improved upon commercialization by appropriately controlling the composition and the amount of the components added during preparation of the electrolytic solution, thereby achieving high conductivity of the electrolytic solution.
상기 목적을 달성하기 위한 본 발명은 중압용 알루미늄 전해 콘덴서에 사용되는 전해액에 있어서, 에틸렌 글리콜과 순수로 이루어지는 용매, 암모늄 세바케이트로 이루어지는 용질 및 첨가제인 차아인산으로 구성되며, 이때 함유량은 에틸렌 글리콜 : 85-89%, 순수 : 3-7%, 암모늄 세바케이트 : 5-9%, 차아인산 : 0.1-0.3%인 중압용 알루미늄 콘덴서의 전해액에 관한 것을 그 요지로 한다.The present invention for achieving the above object is composed of an electrolyte solution used in an aluminum electrolytic capacitor for medium pressure, a solvent consisting of ethylene glycol and pure water, a solute made of ammonium sebacate and hypophosphorous acid as an additive, wherein the content is ethylene glycol: The gist of the medium pressure aluminum capacitor is 85-89%, pure water: 3-7%, ammonium sebacate: 5-9%, hypophosphorous acid: 0.1-0.3%.
Description
본 발명은 중압용 알루미늄 전해 콘덴서에 사용되는 전해액에 관한 것으로, 보다 상세하게는 제품화시 손실각 특성이 우수한 중압용 알루미늄 전해 콘덴서의 전해액에 관한 것이다.The present invention relates to an electrolyte used in an aluminum electrolytic capacitor for medium pressure, and more particularly, to an electrolyte solution for an aluminum electrolytic capacitor for medium pressure having excellent loss angle characteristics during commercialization.
일반적으로 알루미늄 전해 콘덴서는 저압용(100WV이하), 중압용(160-350WV), 고압용(400WV이상)으로 분류되며, 이러한 분류의 기준은 일반적으로 전해 콘덴서의 내부에 장입되는 전해액에 따라 결정된다.Generally, aluminum electrolytic capacitors are classified into low pressure (less than 100WV), medium pressure (160-350WV), and high pressure (more than 400WV), and the criteria for this classification are generally determined by the electrolyte loaded into the electrolytic capacitor. .
상기와 같이 분류되는 전해액 중에서 정격전압이 250-350WV정도인 중압용 알루미늄 전해 콘덴서의 사용되는 전해액의 일례를 들면, 에틸렌 글리콜(Ethylene Glycol)과 디에틸렌 글리콜(Diethylene Glycol)로 이루어지는 용매, 암모늄 세바케이트(Ammonium Sebacate)로 이루어지는 용질 및 파라 니트로벤질 알콜(p-Nitrobenzyl Alcohol) 등의 수소가스 흡수제로 구성되는 전해액을 들 수 있다. 이러한 전해액은 에틸렌 글리콜과 디에틸렌 글리콜의 혼합용매를 적용하여 우수한 내전압(sparking voltage)특성을 보인다.Examples of the electrolyte used in the medium pressure aluminum electrolytic capacitor having a rated voltage of about 250-350 WV among the electrolytes classified as above include a solvent consisting of ethylene glycol and diethylene glycol, and ammonium sebacate. And an electrolyte solution composed of a solute made of (Ammonium Sebacate) and a hydrogen gas absorbent such as paranitrobenzyl alcohol (p-Nitrobenzyl Alcohol). This electrolyte shows excellent sparking voltage characteristics by applying a mixed solvent of ethylene glycol and diethylene glycol.
하지만, 상기와 같은 전해액은 비저항이 600-700Ω·㎝/25℃ 정도로 비교적 높은 편이어서 제품화시 손실각(tanδ)이 크고, 또한 단자부식 등이 발생할 확율이 높다는 문제점이 있다.However, the electrolyte solution as described above has a relatively high resistivity of 600-700 Ω · cm / 25 ° C., resulting in a large loss angle (tan δ) during commercialization and a high probability of occurrence of terminal corrosion.
이에, 본 발명자는 상기한 바와같은 문제점을 해결하기 위하여 연구와 실험을 거듭하고, 그 결과에 근거하여 본 발명을 제안하게 된 것으로, 본 발명은 전해액의 제조시 첨가되는 성분들의 조성과 그 첨가량을 적절히 제어하여, 전해액의 고전도도화를 이루어 제품화시 손실각 특성이 향상된 중압용 알루미늄 전해 콘덴서의 전해액을 제공하고자 하는데, 그 목적이 있다.Accordingly, the present inventors have repeatedly conducted research and experiments to solve the above problems, and based on the results, the present invention proposes a composition and the amount of the components added during the preparation of the electrolyte solution. Properly controlled to achieve a high conductivity of the electrolytic solution to provide an electrolyte solution of the medium-pressure aluminum electrolytic capacitor with improved loss angle characteristics during the production, it is an object.
상기 목적을 달성하기 위한 본 발명은 중압용 알루미늄 전해 콘덴서에 사용되는 전해액에 있어서, 에틸렌 글리콜과 순수로 이루어지는 용매, 암모늄 세바케이트로 이루어지는 용질 및 첨가제인 차아인산(Hypophosphoric acid)으로 구성되며, 이때 함유량은 에티렌 글리콜 : 85-89중량%(이하, "%"라 한다), 순수 : 3-7%, 암모늄 세바케이트 : 5-9%, 차아인산 : 0.1-0.3%인 중압용 알루미늄 콘덴서의 전해액에 관한 것이다.The present invention for achieving the above object is composed of a hypophosphoric acid (Hypophosphoric acid) which is a solute and an additive consisting of a solvent consisting of ethylene glycol and pure water, an ammonium sebacate in an electrolyte solution used in an aluminum electrolytic capacitor for medium pressure. Silver Ethylene Glycol: 85-89% by weight (hereinafter referred to as "%"), Pure Water: 3-7%, Ammonium Sebacate: 5-9%, Hypophosphoric Acid: 0.1-0.3% It is about.
이하, 본 발명을 상세히 설명한다.Hereinafter, the present invention will be described in detail.
본 발명은 에틸렌 글리콜과 순수로 이루어지는 용매, 암모늄 세바케이트로 이루어지는 용질 및 첨가제인 차아인산으로 구성되는 전해액에 관한 것으로, 다음에서는 이들의 함유량에 대한 한정 이유를 설명한다.The present invention relates to an electrolytic solution composed of a solvent consisting of ethylene glycol and pure water, a solute consisting of ammonium sebacate, and hypophosphorous acid as an additive, and the reason for limitation on these contents will be described below.
상기 에틸렌 글리콜은 전해질을 용해시키고 특성을 좌우하는 역할을 하는 것으로, 그 함량이 85%미만인 경우에는 용해도의 저하로 비저항이 상승하고, 89%를 초과하는 경우에는 내전압이 저하되어 신뢰성이 불량하다. 따라서, 본 발명에서는 에틸렌 글리콜의 함량을 85-89%로 한정함이 바람직하다.The ethylene glycol dissolves the electrolyte and plays a role in determining the properties. When the content is less than 85%, the specific resistance increases due to the decrease in solubility, and when the content exceeds 89%, the withstand voltage is lowered and the reliability is poor. Therefore, in the present invention, it is preferable to limit the content of ethylene glycol to 85-89%.
상기 순수는 전도도를 높이기 위하여 첨가하는 것으로, 그 함량이 3% 미만인 경우에는 내전압이 저하하며, 비저항이 상승하고, 7%를 초과하는 경우에는 신뢰성이 저하하며, 105℃와 같은 고온영역에서 제품을 사용할 수 없게된다. 따라서, 본 발명에서는 순수한 함량을 3-7%로 한정함이 바람직하다.The pure water is added to increase the conductivity, when the content is less than 3%, the withstand voltage is lowered, the specific resistance is increased, when it exceeds 7%, the reliability is lowered, and the product is It becomes unusable. Therefore, in the present invention, it is preferable to limit the pure content to 3-7%.
상기 암모늄 세바케이트는 주전해질 역할을 하는 것으로, 그 함량이 5%미만인 경우에는 내전압이 저하되고, 9%를 초과하는 경우에는 용해도 저하로 용질이 석출되는 문제점이 있다. 따라서, 본 발명에서는 암모늄 세바케이트의 함량을 5-9%로 한정함이 바람직하다.The ammonium sebacate serves as a main electrolyte, and if the content is less than 5%, the breakdown voltage is lowered, and if it exceeds 9%, the solute is precipitated due to a decrease in solubility. Therefore, in the present invention, it is preferable to limit the content of ammonium sebacate to 5-9%.
상기 차아인산은 수소가스를 흡수하여 부식발생을 억제하기 위해 첨가하는 첨가제로서, 그 함량이 0.1% 미만인 경우에는 부식발생이 유발하고, 0.3%를 초과하는 경우에는 비저항이 상승하고 내전압이 저하하는 문제점이 있다. 따라서, 본 발명에서는 차아인산의 함량을 0.1-0.3%로 한정함이 바람직하다.Hypophosphoric acid is an additive that is added to absorb hydrogen gas to inhibit corrosion. If the content is less than 0.1%, corrosion occurs, and if it exceeds 0.3%, the specific resistance increases and the breakdown voltage decreases. There is this. Therefore, in the present invention, it is preferable to limit the content of hypophosphorous acid to 0.1-0.3%.
이하, 실시예를 통하여 본 발명을 보다 상세히 설명한다.Hereinafter, the present invention will be described in more detail with reference to Examples.
[실시예]EXAMPLE
에틸렌 글리콜과 순수를 혼합시킨 후, 암모늄 세바케이트와 차아인산을 첨가하고, 가열하여 온도를 90℃로 상승시킨 다음 2시간 교반시켜 전해액을 제조하였다. 또한, 종래 방법에 의해 에틸렌 글리콜과 디에틸렌 글리콜을 혼합시킨 후, 암모늄 세바케이트와 파라 니트로벤질 알콜을 첨가하여 전해액을 제조하였다.After mixing ethylene glycol and pure water, ammonium sebacate and hypophosphoric acid were added, and heated to raise the temperature to 90 ° C. and stirred for 2 hours to prepare an electrolyte solution. In addition, ethylene glycol and diethylene glycol were mixed by a conventional method, and then ammonium sebacate and para nitrobenzyl alcohol were added to prepare an electrolyte solution.
이때, 첨가량은 하기 표1과 같았으며, 상기 제조된 전해액의 비저항(Ω·㎝/25℃), 내전압, pH를 측정하여 하기 표1에 나타내었다. 또한, 상기 전해액으로 알루미늄 전해 콘덴서를 제조(250WV 470㎌, ø25×40L)하여 제품특성(손실각)을 측정하여 그 결과를 하기 표1에 나타내었다.At this time, the addition amount was as shown in Table 1, and the specific resistance (Ω · cm / 25 ℃), withstand voltage, pH of the prepared electrolyte is measured and shown in Table 1 below. In addition, an aluminum electrolytic capacitor was manufactured using the electrolyte (250 WV 470 kPa, ø25 × 40 L), and the product characteristics (loss angles) were measured. The results are shown in Table 1 below.
하기 표1에서 에틸렌 글리콜은 'EG'로, 암모늄 세바케이트는 'AS'로, 디에틸렌 글리콜은 'DEG'로, 파라 니트로벤질 알콜은 'p-NBA'로 표기하였다.In Table 1, ethylene glycol is 'EG', ammonium sebacate is 'AS', diethylene glycol is 'DEG', and para nitrobenzyl alcohol is designated as 'p-NBA'.
상기 표1에서 알 수 있는 바와같이, 본 발명의 조건을 만족하는 발명예(3, 4)은 종래예(1, 2)에 비하여 내전압특성을 동등 이상의 수준을 유지하면서, 비저항이 상당히 낮았고 이로인해 제품화시 손실각 특성도 향상되었다.As can be seen from Table 1, Inventive Examples (3, 4) satisfying the conditions of the present invention compared with the prior art examples (1, 2), while maintaining the level of withstand voltage characteristics equal or more, the specific resistance was considerably low and because of this The loss angle characteristics of the product were also improved.
이에 반하여, 비교예(5, 6)은 본 발명과 같은 성분을 갖기는 하지만, 그 조성범위가 본 발명의 한정범위를 벗어나 그 전해액 특성 및 제품특성이 발명예(3, 4) 보다 현저히 뒤떨어짐을 알 수 있다.On the contrary, although Comparative Examples (5, 6) have the same components as the present invention, their composition range is beyond the scope of the present invention and their electrolyte and product characteristics are significantly inferior to the Inventive Examples (3, 4). Able to know.
상술한 바와같이, 본 발명에 의하면, 정격전압이 250-350WV정도인 중압용 알루미늄 전해 콘덴서에 사용되는 전해액의 성분조성을 적절히 제어하므로서, 전해액의 고전 도도화를 이루어 비저항이 350-450Ω·㎝/25℃정도로 낮아져, 제품화시 손실각 특성이 향상되는 중압용 알루미늄 콘덴서의 전해액이 제공되는 효과가 있다.As described above, according to the present invention, by appropriately controlling the composition of the electrolyte solution used for the medium voltage aluminum electrolytic capacitor having a rated voltage of about 250-350WV, the electrolytic solution has a high conductivity, resulting in a specific resistance of 350-450Ω · cm / 25. It is lowered to about ℃, there is an effect that the electrolyte solution of the aluminum capacitor for medium pressure that improves the loss angle characteristics during commercialization.
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| KR1019970028310A KR100234950B1 (en) | 1997-06-27 | 1997-06-27 | Electrolyte composition of aluminum electrolytic condenser |
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