JPH02277209A - Electrolyte for driving electrolytic capacitor - Google Patents
Electrolyte for driving electrolytic capacitorInfo
- Publication number
- JPH02277209A JPH02277209A JP9850389A JP9850389A JPH02277209A JP H02277209 A JPH02277209 A JP H02277209A JP 9850389 A JP9850389 A JP 9850389A JP 9850389 A JP9850389 A JP 9850389A JP H02277209 A JPH02277209 A JP H02277209A
- Authority
- JP
- Japan
- Prior art keywords
- electrolyte
- added
- electrolytic capacitor
- trivalent phenol
- dissolved
- 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.)
- Granted
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 15
- 239000003792 electrolyte Substances 0.000 title claims abstract description 14
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000002253 acid Substances 0.000 claims abstract description 12
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims abstract description 10
- WQGWDDDVZFFDIG-UHFFFAOYSA-N pyrogallol Chemical compound OC1=CC=CC(O)=C1O WQGWDDDVZFFDIG-UHFFFAOYSA-N 0.000 claims abstract description 10
- 150000007513 acids Chemical class 0.000 claims abstract description 9
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 5
- 125000004432 carbon atom Chemical group C* 0.000 claims abstract description 5
- 229940079877 pyrogallol Drugs 0.000 claims abstract description 5
- 229960001553 phloroglucinol Drugs 0.000 claims abstract description 4
- QCDYQQDYXPDABM-UHFFFAOYSA-N phloroglucinol Chemical compound OC1=CC(O)=CC(O)=C1 QCDYQQDYXPDABM-UHFFFAOYSA-N 0.000 claims abstract description 4
- 150000003839 salts Chemical class 0.000 claims description 3
- 238000005868 electrolysis reaction Methods 0.000 claims 1
- 229920006395 saturated elastomer Polymers 0.000 abstract description 2
- 239000008151 electrolyte solution Substances 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 239000000243 solution Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 2
- 239000004327 boric acid Substances 0.000 description 2
- 150000002989 phenols Chemical class 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
Landscapes
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
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。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an electrolytic solution for driving an electrolytic capacitor (hereinafter referred to as electrolytic solution).
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
はエチレングリコー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。BACKGROUND OF THE INVENTION Conventionally, an electrolyte solution for high-voltage aluminum electrolytic capacitors has often been an electrolyte solution containing boric acid dissolved in a solution mainly containing ethylene glycol.
発明が解決しようとする問題点
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、
信頼性を充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となる。またアルミニウムとの錯
体形成は電解コンデンサに２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。Problems to be Solved by the Invention When aluminum electrolytic capacitors are used at high temperatures, the conventional electrolyte containing boric acid dissolved in a solution mainly composed of ethylene glycol can cause problems due to the generation of esterified water.
It was not possible to ensure sufficient reliability. The use of higher dibasic acids with a large number of carbon atoms has also been considered, but the solubility is low and this has not been put to practical use. Furthermore, the use of higher dibasic acids having alkyl groups in their side chains is being considered, but higher dibasic acids have a strong ability to form complexes with aluminum in the presence of water in the electrolyte. Therefore, it was necessary to use the electrolyte as a water-free electrolyte, or to keep the amount of higher dibasic acid blended into the electrolyte low. However, it is virtually impossible to manufacture electrolytic capacitors without moisture in the electrolyte, and keeping the amount of higher dibasic acid blended in the electrolyte low ultimately results in This means that only an electrolyte with a high concentration can be obtained. In addition, the formation of complexes with aluminum causes a significant decrease in capacitance and a significant increase in loss in electrolytic capacitors, requiring fundamental countermeasures.
問題点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中より１橿以上
を溶解し、フロログルシン、ピロガロール等の三価のフ
ェノールを０．１重量１％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。Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a solution containing ethylene glycol as a main component containing one of higher dibasic acids or salts thereof having 12 to 22 carbon atoms and an alkyl group in the side chain. This is an electrolytic solution for an electrolytic capacitor, which is characterized by dissolving a liquid or more and adding trivalent phenol such as phloroglucin or pyrogallol in an amount of 0.1% by weight or more.
作用
本発明の電解液は、配合したフロログルシン、ピロガロ
ール等の三価のフェノールにより高級二塩基酸とアルミ
ニウムの側鎖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。Function The electrolytic solution of the present invention has the effect of completely preventing the formation of side chains of higher dibasic acids and aluminum due to the blended trivalent phenols such as phloroglucin and pyrogallol, resulting in a significant reduction in the capacitance of electrolytic capacitors. This can prevent a significant increase in losses.
実施例 以下、本発明の実施例について説明する。Example Examples of the present invention will be described below.
第１表は、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、フロログルシン、ピロガロール等の三価フェ
ノール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４００■、
２２０μＦ）を１１５°Ｃ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。Table 1 shows that 10% by weight of 1°6-
Aluminum electrolytic capacitors (rated at 400 cm,
220 μF) at 115° C. and the rated voltage was applied for 2000 hours. Each numerical value is an average value of 10 samples.
三価のフェノール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，Ｏ
，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三価のフェノ
ール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、三価の
フェノールの添加量は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
。また三価のフェールの飽和溶解量を超える配合は望ま
しくない。Compared to electrolytic capacitors using an electrolyte containing no trivalent phenol (sample group symbol A), electrolytic capacitors using the electrolyte of the present invention (sample group symbols B, C, and O)
, E%F) shows stable characteristics in both capacitance and loss. In addition, trivalent phenol was evaluated at various blending ratios in various higher dibasic acids, and similar effects were observed in all compositions. However, if the amount of trivalent phenol added is less than 0.1% by weight, the stability of the effect is poor, and therefore it is necessary to add trivalent phenol in an amount of 0.1% by weight or more. Also, it is not desirable to mix more than the saturated amount of trivalent fer dissolved.
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中より１種以上を溶解し、
フロ０グルシン、ピロガロール等の三価のフェノールを
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。Effects of the Invention As described above, one or more higher dibasic acids or salts thereof having 12 to 22 carbon atoms and an alkyl group in the side chain are dissolved in the solution mainly composed of ethylene glycol of the present invention,
The use of an electrolytic solution characterized by the addition of 0.1% by weight or more of trivalent phenols such as fluoroglucine and pyrogallol makes it possible to obtain high-voltage electrolytic capacitors that are stable at high temperatures, and has industrial and practical value. It is a big thing.
Claims (1)
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、フロログルシン、ピロ
ガロール等の三価のフェノールを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 solution mainly composed of ethylene glycol containing 12 or more carbon atoms
Electrolysis characterized by dissolving one or more of higher dibasic acids having an alkyl group in the side chain or their salts in 22, and adding 0.1% by weight or more of trivalent phenol such as phloroglucin and pyrogallol. Electrolyte for driving capacitors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9850389A JP2802094B2 (en) | 1989-04-18 | 1989-04-18 | Electrolyte for driving electrolytic capacitors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9850389A JP2802094B2 (en) | 1989-04-18 | 1989-04-18 | Electrolyte for driving electrolytic capacitors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02277209A true JPH02277209A (en) | 1990-11-13 |
| JP2802094B2 JP2802094B2 (en) | 1998-09-21 |
Family
ID=14221446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9850389A Expired - Fee Related JP2802094B2 (en) | 1989-04-18 | 1989-04-18 | Electrolyte for driving electrolytic capacitors |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2802094B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006332268A (en) * | 2005-05-25 | 2006-12-07 | Nichicon Corp | Electrolyte for driving electrolytic capacitor |
| US7859828B2 (en) * | 2004-09-07 | 2010-12-28 | Panasonic Corporation | Electrolytic solution for electrolytic capacitor, and electrolytic capacitor using the same |
-
1989
- 1989-04-18 JP JP9850389A patent/JP2802094B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7859828B2 (en) * | 2004-09-07 | 2010-12-28 | Panasonic Corporation | Electrolytic solution for electrolytic capacitor, and electrolytic capacitor using the same |
| JP2006332268A (en) * | 2005-05-25 | 2006-12-07 | Nichicon Corp | Electrolyte for driving electrolytic capacitor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2802094B2 (en) | 1998-09-21 |
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