JPH11340097A - Electrolytic solution for driving electrolytic capacitor - Google Patents
Electrolytic solution for driving electrolytic capacitorInfo
- Publication number
- JPH11340097A JPH11340097A JP14157498A JP14157498A JPH11340097A JP H11340097 A JPH11340097 A JP H11340097A JP 14157498 A JP14157498 A JP 14157498A JP 14157498 A JP14157498 A JP 14157498A JP H11340097 A JPH11340097 A JP H11340097A
- Authority
- JP
- Japan
- Prior art keywords
- electrolytic solution
- driving
- electrolytic capacitor
- electrolytic
- solution
- 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.)
- Pending
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、アルミニウム電解
コンデンサ駆動用電解液(以下、電解液と称す)の改良に
おいて、特に比抵抗を改善した電解液に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrolytic solution for driving an aluminum electrolytic capacitor (hereinafter referred to as an electrolytic solution), and more particularly to an electrolytic solution having improved specific resistance.
【０００２】[0002]
【従来の技術】従来、低圧アルミニウム電解コンデンサ
用電解液としては、γ−ブチロラクトンを主成分とする
溶媒に、フタル酸やマレイン酸などのカルボン酸類と、
トリエチルアミンとの塩を主溶質として溶解した電解液
を用いている。2. Description of the Related Art Conventionally, as an electrolytic solution for a low-pressure aluminum electrolytic capacitor, a solvent containing γ-butyrolactone as a main component, a carboxylic acid such as phthalic acid or maleic acid,
An electrolytic solution in which a salt with triethylamine is dissolved as a main solute is used.
【０００３】[0003]
【発明が解決しようとする課題】これらを主溶質とした
電解液は比抵抗が高く、アルミニウム電解コンデンサの
低損失化を望む市場の要求に充分に対応できないという
問題があった。The electrolytic solution containing these as main solutes has a high specific resistance, and has a problem that it cannot sufficiently meet the demands of the market for reducing the loss of aluminum electrolytic capacitors.
【０００４】[0004]
【課題を解決するための手段】本発明は、分子量が小さ
く解離定数の大きな３，４−ジヒドロキシ−３−シクロ
ブテン−１，２−ジオンに注目し、その特性を電解液に
適用することによって、上記課題の解決を図ろうとする
ものである。すなわち、γ−ブチロラクトンおよび／ま
たはエチレングリコールからなる溶媒に、〔化２〕で示
される３，４−ジヒドロキシ−３−シクロブテン−１，
２−ジオンまたはその塩を５〜４０ｗｔ％溶質として添
加し、比抵抗の低下を図ることを特徴とするアルミニウ
ム電解コンデンサ用電解液である。SUMMARY OF THE INVENTION The present invention focuses on 3,4-dihydroxy-3-cyclobutene-1,2-dione having a small molecular weight and a large dissociation constant. The purpose of the present invention is to solve the above problems. That is, 3,4-dihydroxy-3-cyclobutene-1, represented by the following chemical formula 2, is added to a solvent composed of γ-butyrolactone and / or ethylene glycol.
An electrolytic solution for an aluminum electrolytic capacitor, characterized in that 2-dione or a salt thereof is added as a solute in an amount of 5 to 40 wt% to reduce specific resistance.
【０００５】[0005]
【化２】 Embedded image
【０００６】[0006]
【発明の実施の形態】３，４−ジヒドロキシ−３−シク
ロブテン−１，２−ジオンは、〔化２〕に示される構造
であり、分子量が小さく解離定数が大きいことから、フ
タル酸やマレイン酸などのカルボン酸を用いた電解液よ
りも比抵抗を低くすることができる。BEST MODE FOR CARRYING OUT THE INVENTION 3,4-Dihydroxy-3-cyclobutene-1,2-dione has a structure represented by the following chemical formula 2, and has a small molecular weight and a large dissociation constant. The specific resistance can be made lower than that of an electrolytic solution using a carboxylic acid.
【０００７】[0007]
【実施例】以下、実施例の具体的内容について説明す
る。主溶媒にはγ−ブチロラクトン、副溶媒にはエチレ
ングリコールを用い、従来例として、主溶質にはフタル
酸水素トリエチルアミン、また本発明の実施例として
３，４−ジヒドロキシ−３−シクロブテン−１，２−ジ
オントリエチルアミンを用いた。また従来例，比較例及
び実施例とも、亜燐酸０．１ｗｔ％を添加している。表
１に実施例及び従来例の電解液組成、比抵抗を示す。
３，４−ジヒドロキシ−３−シクロブテン−１，２−ジ
オントリエチルアミン２ｗｔ％の比較例２の比抵抗は１
６９Ω・ｃｍで従来例と同等(従来例 １７０Ω・ｃｍ）
となり、５〜４０ｗｔ％の実施例１〜５で，１２５〜１
０４Ω・ｃｍとなり、２６〜３９％の低比抵抗化が可能
である。上記の通り、３，４−ジヒドロキシ−３−シク
ロブテン−１，２−ジオントリエチルアミン濃度が５ｗ
ｔ％未満では比抵抗低下が十分に行われず、また、４０
ｗｔ％を超えると溶解しなくなることから、５〜４０ｗ
ｔ％の範囲が適当である。DESCRIPTION OF THE PREFERRED EMBODIMENTS The concrete contents of the embodiments will be described below. Γ-butyrolactone is used as a main solvent, ethylene glycol is used as a sub-solvent, triethylamine hydrogen phthalate is used as a conventional solute, and 3,4-dihydroxy-3-cyclobutene-1,2 is used as an example of the present invention. -Dionetriethylamine was used. Further, in the conventional example, the comparative example and the example, 0.1 wt% of phosphorous acid is added. Table 1 shows the composition of the electrolytic solution and the specific resistance of the example and the conventional example.
The specific resistance of Comparative Example 2 containing 2 wt% of 3,4-dihydroxy-3-cyclobutene-1,2-dionetriethylamine was 1
69 Ω · cm equivalent to the conventional example (conventional example 170 Ω · cm)
In Examples 1 to 5 of 5 to 40 wt%, 125 to 1
04 Ω · cm, and a low specific resistance of 26 to 39% is possible. As described above, the 3,4-dihydroxy-3-cyclobutene-1,2-dionetriethylamine concentration is 5 w
If it is less than t%, the specific resistance is not sufficiently reduced.
If it exceeds 5 wt%, it will not be dissolved.
A range of t% is appropriate.
【０００８】[0008]
【表１】 [Table 1]
【０００９】次に上記〔表１〕に示した従来例、比較例
および実施例の電解液を使用して作製した定格１６Ｖ−
４７００μＦのアルミニウム電解コンデンサ各２０個に
ついて、静電容量、ｔａｎδ、漏れ電流の初期特性及び
高温負荷試験（１０５℃中において定格電圧印加、１０
００時間）後の静電容量変化率、ｔａｎδ、漏れ電流、
外観を調査した結果を〔表２〕に示す。Next, a rated voltage of 16 V which was produced using the electrolytes of the conventional example, comparative example and example shown in Table 1 above.
For each of 20 4700 μF aluminum electrolytic capacitors, capacitance, tan δ, initial characteristics of leakage current and high temperature load test (applied rated voltage at 105 ° C., 10
00 hour), tan δ, leakage current,
Table 2 shows the results of the examination of the appearance.
【００１０】[0010]
【表２】 [Table 2]
【００１１】〔表２〕の通り、実施例１〜５では、従来
例と比較してｔａｎδの低減が可能であり、また、１０
５℃ １０００時間後の高温負荷特性も従来例より安定
している。As shown in Table 2, in Examples 1 to 5, tan δ can be reduced as compared with the conventional example.
The high-temperature load characteristics after 5 hours at 5 ° C. are more stable than the conventional example.
【００１２】[0012]
【発明の効果】上記のとおり、３，４−ジヒドロキシ−
３−シクロブテン−１，２−ジオンまたはその塩を溶質
として用いたアルミニウム電解コンデンサ用電解液は、
従来よりも比抵抗を大きく低下させることが可能で、ま
た、高温安定性においても優れており、本電解液を用い
たアルミニウム電解コンデンサは、従来より低損失化、
信頼性改善が十分可能であり、工業的価値大なるもので
ある。As described above, 3,4-dihydroxy-
An electrolytic solution for an aluminum electrolytic capacitor using 3-cyclobutene-1,2-dione or a salt thereof as a solute is:
It is possible to lower the specific resistance much more than before, and it is also excellent in high temperature stability.The aluminum electrolytic capacitor using this electrolyte solution has lower loss than before,
It is possible to improve the reliability sufficiently and has great industrial value.
Claims (1)
レングリコールとからなる溶媒に、〔化１〕で示される
３，４−ジヒドロキシ−３−シクロブテン−１，２−ジ
オンまたはその塩を５〜４０ｗｔ％溶質として添加した
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。 【化１】 1. A solvent comprising γ-butyrolactone and / or ethylene glycol, wherein 5 to 40% by weight of 3,4-dihydroxy-3-cyclobutene-1,2-dione or a salt thereof represented by the following chemical formula (1) is dissolved. An electrolytic solution for driving an aluminum electrolytic capacitor, wherein the electrolytic solution is added as a component. Embedded image
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14157498A JPH11340097A (en) | 1998-05-22 | 1998-05-22 | Electrolytic solution for driving electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14157498A JPH11340097A (en) | 1998-05-22 | 1998-05-22 | Electrolytic solution for driving electrolytic capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11340097A true JPH11340097A (en) | 1999-12-10 |
Family
ID=15295153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14157498A Pending JPH11340097A (en) | 1998-05-22 | 1998-05-22 | Electrolytic solution for driving electrolytic capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11340097A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006075721A1 (en) * | 2005-01-12 | 2006-07-20 | Sumitomo Chemical Company, Limited | Composition containing oxocarbon and use thereof |
| WO2006135029A1 (en) * | 2005-06-17 | 2006-12-21 | Sumitomo Chemical Company, Limited | Electrolyte containing oxocarbon and use thereof |
| JP2007095871A (en) * | 2005-09-28 | 2007-04-12 | Nichicon Corp | Electrolyte for drive of electrolytic capacitor |
| EP1895613A1 (en) * | 2005-06-17 | 2008-03-05 | Sumitomo Chemical Company, Limited | Electrolyte containing oxocarbon molecule and use thereof |
| JP2008262900A (en) * | 2007-03-16 | 2008-10-30 | Sony Corp | Non-aqueous electrolyte and non-aqueous electrolyte battery using the same |
| EP1741740A4 (en) * | 2004-04-30 | 2009-07-01 | Sumitomo Chemical Co | Polymer having oxocarbon group and use thereof |
-
1998
- 1998-05-22 JP JP14157498A patent/JPH11340097A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1741740A4 (en) * | 2004-04-30 | 2009-07-01 | Sumitomo Chemical Co | Polymer having oxocarbon group and use thereof |
| WO2006075721A1 (en) * | 2005-01-12 | 2006-07-20 | Sumitomo Chemical Company, Limited | Composition containing oxocarbon and use thereof |
| US7977393B2 (en) | 2005-01-12 | 2011-07-12 | Sumitomo Chemical Company, Limited | Composition containing oxocarbon and use thereof |
| WO2006135029A1 (en) * | 2005-06-17 | 2006-12-21 | Sumitomo Chemical Company, Limited | Electrolyte containing oxocarbon and use thereof |
| EP1895613A1 (en) * | 2005-06-17 | 2008-03-05 | Sumitomo Chemical Company, Limited | Electrolyte containing oxocarbon molecule and use thereof |
| EP1895613A4 (en) * | 2005-06-17 | 2011-01-05 | Sumitomo Chemical Co | Electrolyte containing oxocarbon molecule and use thereof |
| JP2007095871A (en) * | 2005-09-28 | 2007-04-12 | Nichicon Corp | Electrolyte for drive of electrolytic capacitor |
| JP4662263B2 (en) * | 2005-09-28 | 2011-03-30 | ニチコン株式会社 | Electrolytic solution for electrolytic capacitor drive |
| JP2008262900A (en) * | 2007-03-16 | 2008-10-30 | Sony Corp | Non-aqueous electrolyte and non-aqueous electrolyte battery using the same |
| JP4569639B2 (en) * | 2007-03-16 | 2010-10-27 | ソニー株式会社 | Nonaqueous electrolyte for nonaqueous electrolyte secondary battery and nonaqueous electrolyte secondary battery using the same |
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Legal Events
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