JP2625464B2 - Electrolyte for driving electrolytic capacitors - Google Patents
Electrolyte for driving electrolytic capacitorsInfo
- Publication number
- JP2625464B2 JP2625464B2 JP63023494A JP2349488A JP2625464B2 JP 2625464 B2 JP2625464 B2 JP 2625464B2 JP 63023494 A JP63023494 A JP 63023494A JP 2349488 A JP2349488 A JP 2349488A JP 2625464 B2 JP2625464 B2 JP 2625464B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- electrolyte
- electrolytic solution
- electrolytic capacitors
- butyrolactone
- 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
- Secondary Cells (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: TECHNICAL FIELD The present invention relates to an electrolytic solution for driving an electrolytic capacitor (hereinafter referred to as an electrolytic solution).
従来の技術 従来、電解液としてはγ−ブチロラクトンとエチレン
グリコールとからなる混合溶媒に、マレイン酸のアルキ
ルアンモニウム塩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, an electrolytic solution in which an alkyl ammonium salt of maleic acid is dissolved in a mixed solvent composed of γ-butyrolactone and ethylene glycol has been frequently used.
発明が解決しようとする問題点 近年、アルミニウム電解コンデンサの小型化、高信頼
化に伴い、電解液としては比抵抗が低く高温度で安定な
電解液が要求されている。しかし、初期において低い比
抵抗を有するものの、高温度における試験においてγ−
ブチロラクトン中において溶質であるマレイン酸はエチ
レングリコールとの重合反応により著しく減少するた
め、電解液の比抵抗が上昇し、電解コンデンサの損失角
の正接（tanδ）が著しく増加する問題を有していた。Problems to be Solved by the Invention In recent years, with the miniaturization and high reliability of aluminum electrolytic capacitors, there has been a demand for an electrolytic solution having low specific resistance and stable at high temperature as an electrolytic solution. However, although having a low specific resistance in the initial stage, in a test at a high temperature, γ-
Maleic acid, which is a solute in butyrolactone, is significantly reduced by the polymerization reaction with ethylene glycol, so that the specific resistance of the electrolytic solution increases and the tangent (tan δ) of the loss angle of the electrolytic capacitor has a problem of remarkably increasing. .
問題点を解決するための手段 本発明は、上記の問題点を解決するもので、γ−ブチ
ロラクトン95〜20重量％とエチレングリコール５〜80重
量％とからなる混合溶媒に、マレイン酸のアルキルアン
モニウム塩を溶解し、重合防止剤としてヒドロキノンモ
ノメチルエーテル、Ｎ−メチルニトロソアニリンまたは
クペロンのうち少なくとも１種を0.05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であ
る。Means for Solving the Problems The present invention solves the above-mentioned problems, and an alkyl ammonium maleate is added to a mixed solvent consisting of 95 to 20% by weight of γ-butyrolactone and 5 to 80% by weight of ethylene glycol. An electrolytic solution for driving an electrolytic capacitor, wherein a salt is dissolved and at least one of hydroquinone monomethyl ether, N-methylnitrosoaniline and cupperone is added as a polymerization inhibitor in an amount of 0.05% by weight or more.
作用 重合防止剤として、ヒドロキノンモノメチルエーテ
ル、Ｎ−メチルニトロソアニリンまたはクペロンを添加
すると、高温下におけるマレイン酸のカルボキシル基と
エチレングリコールのヒドロキシル基との重合反応によ
るマレイン酸エステルの生成が抑制され、高温下での電
解液の比抵抗増加を抑えることができる。Action When hydroquinone monomethyl ether, N-methylnitrosoaniline or cuperone is added as a polymerization inhibitor, the production of maleic ester by the polymerization reaction between the carboxyl group of maleic acid and the hydroxyl group of ethylene glycol at high temperature is suppressed, The increase in the specific resistance of the electrolyte below can be suppressed.
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表は電解液組成と温度30℃における電解液の比抵
抗値を示す。Table 1 shows the composition of the electrolyte and the specific resistance of the electrolyte at a temperature of 30 ° C.
第２表は第１表に示す電解液で定格10V、100μＦのコ
ンデンサを試作し、105℃で定格電圧印加の高温負荷試
験を行った結果を示す。漏れ電流は定格電圧印加１分後
の値を示す。各々の特性値は試料数20個の平均値であ
る。 Table 2 shows the results of a trial production of a 10 V rated, 100 μF capacitor using the electrolyte shown in Table 1 and a high-temperature load test at 105 ° C. with a rated voltage applied. The leakage current indicates a value one minute after the application of the rated voltage. Each characteristic value is an average value of 20 samples.
第２表から判るように電解液Ｃ、Ｄ、Ｅ、Ｆを用いた
本発明のコンデンサは高温負荷試験においても、損失変
化が小さく優れた耐久性を与える。 As can be seen from Table 2, the capacitor of the present invention using the electrolytes C, D, E, and F has a small loss change and provides excellent durability even in a high-temperature load test.
なお、上述の混合溶媒はγ−ブチロラクトン95〜20重
量％と多価アルコール５〜80重量％であることが好まし
く、最適比は前者が80重量％、後者が20重量％である。The above-mentioned mixed solvent is preferably 95 to 20% by weight of γ-butyrolactone and 5 to 80% by weight of a polyhydric alcohol, and the optimum ratio is 80% by weight for the former and 20% by weight for the latter.
多価アルコールが５重量％未満では高温負荷試験での
静電容量変化が大となり、80重量％を超えると低温での
容量変化率が大きくなる。If the polyhydric alcohol is less than 5% by weight, the change in capacitance in a high temperature load test is large, and if it exceeds 80% by weight, the rate of change in capacitance at low temperatures is large.
またヒドロキノンモノメチルエーテル、Ｎ−メチルニ
トロソアニリン、クペロンの添加量は0.05重量％以上が
好ましく、0.05重量％未満では重合防止効果を十分作用
させることができない。なお、添加量が飽和濃度を超え
ることは好ましくない。Further, the addition amount of hydroquinone monomethyl ether, N-methylnitrosoaniline and cupron is preferably 0.05% by weight or more, and if less than 0.05% by weight, the effect of preventing polymerization cannot be sufficiently exerted. In addition, it is not preferable that the amount added exceeds the saturation concentration.
発明の効果 以上の結果から明らかなように、γ−ブチロラクトン
95〜20重量％とエチレングリコール５〜80重量％とから
なる混合溶媒に、マレイン酸のアルキルアンモニウム塩
を溶解し、重合防止剤としてヒドロキノンモノメチルエ
ーテル、Ｎ−メチルニトロソアニリンまたはクペロンの
うち少なくとも１種を0.05重量％以上添加したアルミニ
ウム電解コンデンサの電解液は、初期の比抵抗が低く、
かつ高温下での比抵抗増加が小さいので、広温度範囲で
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。Effects of the Invention As is apparent from the above results, γ-butyrolactone
An alkyl ammonium salt of maleic acid is dissolved in a mixed solvent consisting of 95 to 20% by weight and 5 to 80% by weight of ethylene glycol, and at least one of hydroquinone monomethyl ether, N-methylnitrosoaniline and cupperone is used as a polymerization inhibitor. The electrolytic solution of the aluminum electrolytic capacitor to which 0.05% by weight or more is added has a low initial specific resistance,
In addition, since the increase in specific resistance at high temperatures is small, it exhibits excellent characteristics in a wide temperature range, and has great industrial and practical value.
Claims (1)
ングリコール５〜80重量％とからなる混合溶媒に、マレ
イン酸のアルキルアンモニウム塩を溶解し、重合防止剤
としてヒドロキノンモノメチルエーテル、Ｎ−メチルニ
トロソアニリンまたはクペロンのうち少なくとも１種を
0.05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。An alkylammonium salt of maleic acid is dissolved in a mixed solvent consisting of 95 to 20% by weight of γ-butyrolactone and 5 to 80% by weight of ethylene glycol, and hydroquinone monomethyl ether, N-methyl nitroso is used as a polymerization inhibitor. At least one of aniline or cuperon
An electrolytic solution for driving an electrolytic capacitor, wherein 0.05% by weight or more is added.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63023494A JP2625464B2 (en) | 1988-02-02 | 1988-02-02 | Electrolyte for driving electrolytic capacitors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63023494A JP2625464B2 (en) | 1988-02-02 | 1988-02-02 | Electrolyte for driving electrolytic capacitors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01198012A JPH01198012A (en) | 1989-08-09 |
| JP2625464B2 true JP2625464B2 (en) | 1997-07-02 |
Family
ID=12112055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63023494A Expired - Fee Related JP2625464B2 (en) | 1988-02-02 | 1988-02-02 | Electrolyte for driving electrolytic capacitors |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2625464B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4520002B2 (en) * | 2000-09-08 | 2010-08-04 | ニチコン株式会社 | Electrolytic solution for driving aluminum electrolytic capacitors |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01103820A (en) * | 1987-10-16 | 1989-04-20 | Nichicon Corp | Electrolyte for driving electrolytic capacitor |
-
1988
- 1988-02-02 JP JP63023494A patent/JP2625464B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01198012A (en) | 1989-08-09 |
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