JP3212366B2 - Electrolyte for driving electrolytic capacitors - Google Patents
Electrolyte for driving electrolytic capacitorsInfo
- Publication number
- JP3212366B2 JP3212366B2 JP18437792A JP18437792A JP3212366B2 JP 3212366 B2 JP3212366 B2 JP 3212366B2 JP 18437792 A JP18437792 A JP 18437792A JP 18437792 A JP18437792 A JP 18437792A JP 3212366 B2 JP3212366 B2 JP 3212366B2
- Authority
- JP
- Japan
- Prior art keywords
- acid
- electrolytic solution
- electrolyte
- solution
- electrolytic capacitor
- 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 - Lifetime
Links
Landscapes
- Electric Double-Layer Capacitors Or The Like (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、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。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrolytic solution for driving an electrolytic capacitor (hereinafter referred to as an electrolytic solution).
【０００２】[0002]
【従来の技術】従来より高圧用アルミニウム電解コンデ
ンサの電解液にはエチレングリコ−ルを主体とした溶液
にほう酸を溶解した電解液が多用されている。2. Description of the Related Art Conventionally, as an electrolytic solution for an aluminum electrolytic capacitor for high pressure, an electrolytic solution obtained by dissolving boric acid in a solution mainly containing ethylene glycol has been frequently used.
【０００３】[0003]
【発明が解決しようとする課題】アルミニウム電解コン
デンサの高温度での使用においては、従来のエチレング
リコールを主体とした溶液にほう酸を溶解した電解液で
は、エステル化水の発生により、信頼性を十分確保でき
なかった。また炭素数の多い高級二塩基酸の使用も検討
されたが溶解度が低く実用には至っていない。さらに、
側鎖にアルキル基を有する高級二塩基酸の使用が検討さ
れているが、高級二塩基酸は電解液中に水分が存在して
いる条件では、アルミニウムとの錯体形成能力が強いた
め、水分を含まない電解液として使用するか、電解液に
配合する高級二塩基酸の配合量を低く抑える必要があっ
た。しかし、電解液中の水分を含まない条件での電解コ
ンデンサの製造は事実上、不可能であり、また電解液に
配合する高級二塩基酸の配合量を低く抑えることは結果
的には比抵抗の高い電解液しか得ることができないこと
になる。またアルミニウムとの錯体形成は電解コンデン
サにおいては静電容量の著しい減少、損失の著しい増加
をもたらすため根本的な対策を必要としていた。When an aluminum electrolytic capacitor is used at a high temperature, the conventional electrolytic solution in which boric acid is dissolved in a solution mainly composed of ethylene glycol has sufficient reliability due to generation of esterified water. Could not secure. The use of higher dibasic acids having a large number of carbon atoms has also been studied, but their solubility is low and they have not been put to practical use. further,
The use of higher dibasic acids having an alkyl group in the side chain has been studied, but higher dibasic acids have a strong ability to form a complex with aluminum when water is present in the electrolytic solution. It was necessary to use the electrolyte as a non-containing electrolyte or to reduce the amount of the higher dibasic acid to be incorporated in the electrolyte. However, it is practically impossible to manufacture an electrolytic capacitor under the condition that does not contain water in the electrolytic solution, and keeping the blending amount of higher dibasic acid in the electrolytic solution low results in a specific resistance. Can be obtained only with high electrolyte solution. In addition, formation of a complex with aluminum causes a drastic decrease in capacitance and a remarkable increase in loss in an electrolytic capacitor, so that a fundamental measure is required.
【０００４】[0004]
【課題を解決するための手段】本発明は上記の問題を解
決するためエチレングリコ−ルを主体とした溶液に炭素
数１２〜２２で側鎖にアルキル基を有する高級二塩基酸
またはその塩の中より１種以上を溶解し、グルコン酸、
マンノン酸、ガラクトン酸のうち１種以上を０．１重量
％以上添加したことを特徴とする電解コンデンサの電解
液である。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a solution containing a higher dibasic acid having 12 to 22 carbon atoms and having an alkyl group in a side chain or a salt thereof in a solution mainly containing ethylene glycol. Dissolve one or more from inside, gluconic acid,
An electrolytic solution for an electrolytic capacitor, wherein one or more of mannic acid and galactonic acid are added in an amount of 0.1% by weight or more.
【０００５】[0005]
【作用】本発明の電解液は、配合したグルコン酸、マン
ノン酸、ガラクトン酸等のヘキソン酸により高級二塩基
酸とアルミニウムの錯体形成を完全に防止する作用を有
し、電解コンデンサの静電容量の著しい減少、損失の著
しい増加を防止できるものである。The electrolytic solution of the present invention has the function of completely preventing the complex formation of a higher dibasic acid and aluminum with the hexonic acid such as gluconic acid, mannonic acid, galactonic acid, etc., and the capacitance of the electrolytic capacitor. And a significant increase in loss can be prevented.
【０００６】[0006]
【実施例】以下、本発明の具体的実施例について説明す
る。表１は、エチレングリコールに１０重量％の１，６
−デカンジカルボン酸アンモニウムを配合した電解液総
重量に対し、グルコン酸、マンノン酸、ガラクトン酸等
のヘキソン酸を添加した本発明にかかる電解液と従来の
電解液を用いたアルミニウム電解コンデンサ（定格４０
０Ｖ、２２０μＦ）を１１５℃中で定格電圧を２０００
時間印加した高温負荷試験結果を示すものである。各数
値は試料数１０個の平均値である。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described. Table 1 shows that 10% by weight of 1,6
-An aluminum electrolytic capacitor using an electrolytic solution according to the present invention containing a hexonic acid such as gluconic acid, mannonic acid or galactonic acid and a conventional electrolytic solution with respect to the total weight of the electrolytic solution containing ammonium decanedicarboxylate (rated 40
0V, 220μF) at 115 ° C and rated voltage of 2000
9 shows the results of a high-temperature load test applied over time. Each numerical value is an average value of 10 samples.
【０００７】[0007]
【表１】 [Table 1]
【０００８】ヘキソン酸を配合していない電解液を使用
した電解コンデンサ（試料群記号Ａ）と比較して、本発
明の電解液を使用した電解コンデンサ（試料群記号Ｂ，
Ｃ，Ｄ，Ｅ，Ｆ）は静電容量、損失いずれも安定な特性
を示している。また、各種高級二塩基酸においてヘキソ
ン酸について各種配合比において評価したがいずれの組
成においても同様な効果がみられた。しかし、ヘキソン
酸の添加量は０．１重量％未満ではその効果の安定性が
乏しく、０．１重量％以上の配合が必要である。またヘ
キソン酸の飽和溶解量を越える配合は望ましくない。[0008] Compared with an electrolytic capacitor using an electrolytic solution containing no hexonic acid (sample group symbol A), an electrolytic capacitor using the electrolytic solution of the present invention (sample group symbol B,
C, D, E, and F) show stable characteristics in both capacitance and loss. In addition, hexonic acid was evaluated at various compounding ratios in various higher dibasic acids, but similar effects were observed in all compositions. However, if the amount of hexonic acid added is less than 0.1% by weight, the stability of the effect is poor, and it is necessary to add 0.1% by weight or more. In addition, a compounding amount exceeding the saturated dissolution amount of hexonic acid is not desirable.
【０００９】[0009]
【発明の効果】以上のように、本発明のエチレングリコ
ールを主体とした溶液に炭素数１２〜２２で側鎖にアル
キル基を有する高級二塩基酸またはその塩のなかより１
種以上を溶解し、グルコン酸、マンノン酸、ガラクトン
酸等のヘキソン酸を０．１重量％以上添加したことを特
徴とする電解液の使用は高温度において安定な高圧用電
解コンデンサが得られ、工業的ならびに実用的価値の大
なるものである。As described above, the higher dibasic acid having 12 to 22 carbon atoms and having an alkyl group in the side chain or one of its salts is added to the solution mainly containing ethylene glycol of the present invention.
More than 0.1% by weight of hexonic acid such as gluconic acid, mannonic acid, galactonic acid, etc. are added to dissolve the seeds or more, and the use of the electrolytic solution can provide a high-pressure electrolytic capacitor that is stable at high temperatures. It is of great industrial and practical value.
Claims (1)
炭素数１２〜２２で、側鎖にアルキル基を有する高級二
塩基酸またはその塩の中より１種以上を溶解し、グルコ
ン酸、マンノン酸、ガラクトン酸のうち１種以上を０．
１重量％以上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。A gluconic acid or mannone is prepared by dissolving at least one of higher dibasic acids having 12 to 22 carbon atoms and having an alkyl group in a side chain or a salt thereof in a solution mainly composed of ethylene glycol. acid, one or more of the galactonic acid 0.
An electrolytic solution for driving an electrolytic capacitor, wherein 1% by weight or more is added.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18437792A JP3212366B2 (en) | 1992-06-17 | 1992-06-17 | Electrolyte for driving electrolytic capacitors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18437792A JP3212366B2 (en) | 1992-06-17 | 1992-06-17 | Electrolyte for driving electrolytic capacitors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH065470A JPH065470A (en) | 1994-01-14 |
| JP3212366B2 true JP3212366B2 (en) | 2001-09-25 |
Family
ID=16152142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18437792A Expired - Lifetime JP3212366B2 (en) | 1992-06-17 | 1992-06-17 | Electrolyte for driving electrolytic capacitors |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3212366B2 (en) |
-
1992
- 1992-06-17 JP JP18437792A patent/JP3212366B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH065470A (en) | 1994-01-14 |
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