JP3103370B2 - Electrolyte for driving electrolytic capacitors - Google Patents
Electrolyte for driving electrolytic capacitorsInfo
- Publication number
- JP3103370B2 JP3103370B2 JP02337187A JP33718790A JP3103370B2 JP 3103370 B2 JP3103370 B2 JP 3103370B2 JP 02337187 A JP02337187 A JP 02337187A JP 33718790 A JP33718790 A JP 33718790A JP 3103370 B2 JP3103370 B2 JP 3103370B2
- Authority
- JP
- Japan
- Prior art keywords
- electrolytic solution
- electrolyte
- water
- electrolytic capacitors
- nonionic surfactant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、広温度において安定した特性を有する電解
コンデンサの駆動用電解液（以下電解液という）に関す
るものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrolytic solution for driving an electrolytic capacitor having stable characteristics at a wide temperature (hereinafter referred to as an electrolytic solution).
従来の技術 従来より低圧用電解液としては、エチレングリコール
および水を主溶媒とし、有機酸あるいはその塩を溶解し
てなる電解液が用いられてきた。2. Description of the Related Art Conventionally, as an electrolyte for low pressure, an electrolyte obtained by dissolving an organic acid or a salt thereof with ethylene glycol and water as main solvents has been used.
発明が解決しようとする課題 近年、アルミニウム電解コンデンサの低インピーダン
ス化、小型化、高信頼化に伴い、電解液としては比抵抗
が低く、広温度範囲で安定な電解液が要求されている。
エチレングリコールおよび水を主溶媒とし、有機酸ある
いはその塩を溶解してなる電解液においては、比抵抗を
低くするために、電解液中の水分の配合比を増大したも
のがあるが、水の配合比を増大すると高温度雰囲気下に
おける信頼性が著しく低下するなどの課題があった。Problems to be Solved by the Invention In recent years, as aluminum electrolytic capacitors have been reduced in impedance, miniaturized, and made more reliable, an electrolytic solution having a low specific resistance and being stable in a wide temperature range has been required.
In an electrolytic solution containing ethylene glycol and water as main solvents and dissolving an organic acid or a salt thereof, in order to lower the specific resistance, there is a case where the mixing ratio of water in the electrolytic solution is increased. When the compounding ratio is increased, there has been a problem that reliability under a high temperature atmosphere is remarkably reduced.
課題を解決するための手段 本発明は上述の課題を解決するため、エチレングリコ
ールおよび水を主溶媒とし、有機酸あるいはその塩を溶
解してなる電解液に、アルキルフェノキシポリエチレン
グリコール型非イオン界面活性剤を添加したことを特徴
とする電解液である。Means for Solving the Problems In order to solve the above-mentioned problems, the present invention uses an alkylphenoxypolyethylene glycol type nonionic surfactant in an electrolytic solution containing ethylene glycol and water as main solvents and dissolving an organic acid or a salt thereof. An electrolytic solution characterized by adding an agent.
なお、添加量としては混合溶媒100gに対し、0.01g未
満では、耐水性向上に対する効果がなく、また1.0gを超
える場合は電解液のにごりが大きくなり、発泡性も見ら
れるため、0.01g〜1.0の範囲内が望ましい。In addition, as for the amount of addition to 100 g of the mixed solvent, if it is less than 0.01 g, there is no effect on the improvement of water resistance, and if it exceeds 1.0 g, the smear of the electrolytic solution becomes large, and foaming property is also seen, so 0.01 g to It is desirable to be within the range of 1.0.
作用 本発明に係る電解液はアルキルフェノキシポリエチレ
ングリコール型非イオン界面活性剤の電極表面への強い
吸着性によって、電解液の低比抵抗化に伴う多量の水分
配合においてもアルミニウム電極箔の水和を防止し、高
温雰囲気中においての信頼性を著しく向上する。The electrolytic solution according to the present invention has a strong adsorption property of the alkylphenoxypolyethylene glycol type nonionic surfactant on the electrode surface, so that the aluminum electrode foil can be hydrated even when a large amount of water is added due to the low specific resistance of the electrolytic solution. And significantly improves reliability in a high-temperature atmosphere.
実施例 以下、本発明の実施例について説明する。Examples Hereinafter, examples of the present invention will be described.
第１表は本発明の電解液と従来の電解液の組成、比抵
抗および火花発生電圧についての比較例を示す。第１表
中電解液試料記号Ａ、Ｂは従来例であり、Ｃ、Ｄ、Ｅ、
Ｆはsample−１に示す構造式の、Ｇはsample−２に示す
構造式の、Ｈはsample−３に示す構造式の各々アルキル
フェノキシポリエチレングリコール型非イオン界面活性
剤を用いた本発明例である。Table 1 shows a comparative example of the composition, specific resistance and spark generation voltage of the electrolytic solution of the present invention and the conventional electrolytic solution. The electrolyte sample symbols A and B in Table 1 are conventional examples, and C, D, E,
F is the structural formula shown in sample-1, G is the structural formula shown in sample-2, and H is the structural formula shown in sample-3. In the present invention example using an alkylphenoxypolyethylene glycol type nonionic surfactant. is there.
第１表から明らかなように、本発明例に係る試料記号
Ｃ、Ｄ、Ｅ、Ｆ、Ｇ、Ｈの電解液は従来の電解液に比
べ、低比抵抗化に伴う多量の水分配合においても耐電圧
の低下がみられない。 As is evident from Table 1, the electrolytes of sample symbols C, D, E, F, G, and H according to the examples of the present invention can be used even in a large amount of water mixed with a lower specific resistance than conventional electrolytes. No decrease in withstand voltage is observed.
第２表は、第１表に示す電解液を用いて試作した定格
100wv 300μＦのアルミニウム電解コンデンサの105℃
2000時間高温負荷試験を行った結果を示す。Table 2 shows the ratings made using the electrolyte shown in Table 1.
105 ℃ of 100wv 300μF aluminum electrolytic capacitor
The results of a 2000-hour high-temperature load test are shown.
第２表から明らかなように、本発明に係る試料記号
Ｃ、Ｄ、Ｅ、Ｆ、Ｇ、Ｈの電解液を用いた電解コンデン
サは、従来の電解液を用いた電解コンデンサに比べ、多
量の水分配合による信頼性の低下が改善されている。 As is clear from Table 2, the electrolytic capacitors using the electrolytes of the sample symbols C, D, E, F, G and H according to the present invention have a larger amount than the electrolytic capacitors using the conventional electrolytes. The decrease in reliability due to the blending of water is improved.
発明の効果 以上の結果から明らかなように、エチレングリコール
および水を主溶媒とし、有機酸あるいはその塩を溶解し
てなる電解液にアルキルフェノキシポリエチレングリコ
ール型非イオン界面活性剤を添加したことを特徴とする
アルミニウム電解コンデンサの駆動用電解液は、低比抵
抗化に伴う多量の水分配合においてもアルミニウム電極
箔の水和反応を防止し、広温度範囲において優れた特性
を示し、工業的ならびに実用的価値の大なるものであ
る。EFFECT OF THE INVENTION As is clear from the above results, an alkylphenoxypolyethylene glycol type nonionic surfactant is added to an electrolytic solution obtained by dissolving an organic acid or a salt thereof with ethylene glycol and water as main solvents. The electrolytic solution for driving an aluminum electrolytic capacitor prevents the hydration reaction of aluminum electrode foil even when a large amount of water is mixed with low specific resistance, and exhibits excellent characteristics in a wide temperature range, and is suitable for industrial and practical use. It is of great value.
Claims (2)
水を主溶媒とし、有機酸あるいはその塩を溶解してなる
電解液に、 （Ｒはアルキル基、ｎ、ｍは０〜20の整数） によって表される、アルキルフェノキシポリエチレング
リコール型非イオン界面活性剤を添加したことを特徴と
する電解コンデンサの駆動用電解液。1. An electrolytic solution comprising ethylene glycol and 20 to 30% by weight of water as a main solvent and an organic acid or a salt thereof dissolved therein. (R is an alkyl group, n and m are integers of 0 to 20). An electrolytic solution for driving an electrolytic capacitor, wherein an alkylphenoxypolyethylene glycol type nonionic surfactant is added.
コール型非イオン界面活性剤の添加量が混合溶媒100gに
対し0.01g〜1.0gであることを特徴とする特許請求の範
囲の請求項（１）記載の電解コンデンサの駆動用電解
液。2. The electrolytic solution according to claim 1, wherein the amount of the alkylphenoxy polyethylene glycol type nonionic surfactant is 0.01 g to 1.0 g per 100 g of the mixed solvent. Electrolyte for driving capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02337187A JP3103370B2 (en) | 1990-11-30 | 1990-11-30 | Electrolyte for driving electrolytic capacitors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02337187A JP3103370B2 (en) | 1990-11-30 | 1990-11-30 | Electrolyte for driving electrolytic capacitors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04206708A JPH04206708A (en) | 1992-07-28 |
| JP3103370B2 true JP3103370B2 (en) | 2000-10-30 |
Family
ID=18306269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP02337187A Expired - Fee Related JP3103370B2 (en) | 1990-11-30 | 1990-11-30 | Electrolyte for driving electrolytic capacitors |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3103370B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021049015A1 (en) * | 2019-09-13 | 2021-03-18 | サン電子工業株式会社 | Capacitor |
-
1990
- 1990-11-30 JP JP02337187A patent/JP3103370B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04206708A (en) | 1992-07-28 |
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