JPS63261822A - Electrolyte for driving electrolytic capacitor - Google Patents
Electrolyte for driving electrolytic capacitorInfo
- Publication number
- JPS63261822A JPS63261822A JP9657187A JP9657187A JPS63261822A JP S63261822 A JPS63261822 A JP S63261822A JP 9657187 A JP9657187 A JP 9657187A JP 9657187 A JP9657187 A JP 9657187A JP S63261822 A JPS63261822 A JP S63261822A
- Authority
- JP
- Japan
- Prior art keywords
- salt
- electrolytic capacitor
- electrolyte
- driving
- 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.)
- Granted
Links
- 239000003990 capacitor Substances 0.000 title claims description 18
- 239000003792 electrolyte Substances 0.000 title claims description 9
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 claims description 14
- 239000008151 electrolyte solution Substances 0.000 claims description 11
- -1 alkyl phosphoric acid ester Chemical class 0.000 claims description 10
- 150000003839 salts Chemical class 0.000 claims description 9
- 229910019142 PO4 Inorganic materials 0.000 claims description 7
- 239000010452 phosphate Substances 0.000 claims description 7
- 239000002904 solvent Substances 0.000 claims description 7
- OTLNPYWUJOZPPA-UHFFFAOYSA-N 4-nitrobenzoic acid Chemical compound OC(=O)C1=CC=C([N+]([O-])=O)C=C1 OTLNPYWUJOZPPA-UHFFFAOYSA-N 0.000 claims description 5
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 5
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 claims description 5
- 239000011976 maleic acid Substances 0.000 claims description 5
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims description 5
- CBXCPBUEXACCNR-UHFFFAOYSA-N tetraethylammonium Chemical class CC[N+](CC)(CC)CC CBXCPBUEXACCNR-UHFFFAOYSA-N 0.000 claims description 4
- QEMXHQIAXOOASZ-UHFFFAOYSA-N tetramethylammonium Chemical class C[N+](C)(C)C QEMXHQIAXOOASZ-UHFFFAOYSA-N 0.000 claims description 4
- 125000000217 alkyl group Chemical group 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims 3
- 239000007788 liquid Substances 0.000 claims 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical class CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- UCQFCFPECQILOL-UHFFFAOYSA-N diethyl hydrogen phosphate Chemical compound CCOP(O)(=O)OCC UCQFCFPECQILOL-UHFFFAOYSA-N 0.000 description 1
- WJZUIWBZDGBLKK-UHFFFAOYSA-M dipentyl phosphate Chemical compound CCCCCOP([O-])(=O)OCCCCC WJZUIWBZDGBLKK-UHFFFAOYSA-M 0.000 description 1
- ZJXZSIYSNXKHEA-UHFFFAOYSA-L ethyl phosphate(2-) Chemical compound CCOP([O-])([O-])=O ZJXZSIYSNXKHEA-UHFFFAOYSA-L 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- NVTPMUHPCAUGCB-UHFFFAOYSA-N pentyl dihydrogen phosphate Chemical compound CCCCCOP(O)(O)=O NVTPMUHPCAUGCB-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Electric Double-Layer Capacitors Or The Like (AREA)
- Primary Cells (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
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に関するものであり、詳しく言
えば、アルミ電解コンデンサ駆動用電解液に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to electrolytic capacitors, and more specifically, to an electrolytic solution for driving an aluminum electrolytic capacitor.
従来の技術
従来、電解コンデンサ駆動用電解液としては、エチレン
グリコールにイオノゲンを溶解した電解液が用いられて
いる。この種の電解コンデンサは低温における特性を悪
化させる。以上のような欠点を改良するため、特開昭６
１−７０７１１号公報にみられるように、γ−ブチロラ
クトンを溶媒とし、フタル酸のトリエチルアミン塩を用
いる例や、特開昭５４−７５６４号公報にみられるよう
に、γ−ブチロラクトンとエチレングリコールの混合溶
媒にマレイン酸のアミン塩を用いる例がある。2. Description of the Related Art Conventionally, as an electrolytic solution for driving an electrolytic capacitor, an electrolytic solution in which ionogen is dissolved in ethylene glycol has been used. This type of electrolytic capacitor has poor characteristics at low temperatures. In order to improve the above-mentioned drawbacks,
1-70711, using γ-butyrolactone as a solvent and triethylamine salt of phthalic acid, and JP-A-54-7564, a mixture of γ-butyrolactone and ethylene glycol. There is an example of using an amine salt of maleic acid as a solvent.
発明が解決しようとする問題点
しかし、従来の問題点として、γ−ブチロラクトンを溶
媒とし、フタル酸のトリエチルアミン塩を用いた場合、
比電導度が低く、また１０５°Ｃ中では高い安定性を示
すが、１２６°Ｃ中ではあ″１シ安定でないという欠点
である。また、γ−ブチロラクトンとエチレングリコー
ルの混合溶媒にマレイン酸のアミン塩を用いた場合、比
電導度は十分高い値が得られるが、高温での安定性に欠
け１０５°Ｃ中でも安定性は低いという欠点がある。Problems to be Solved by the Invention However, as a conventional problem, when using γ-butyrolactone as a solvent and triethylamine salt of phthalic acid,
It has a low specific conductivity, and although it shows high stability at 105°C, it is not very stable at 126°C. When an amine salt is used, a sufficiently high value of specific conductivity can be obtained, but there is a drawback that it lacks stability at high temperatures and has low stability even at 105°C.
本発明はこのような従来の欠点を解決するもので、高電
導度で、高温劣化の小さい電解液を提供し、電解コンデ
ンサの損失特性の改善、並びに高温で長寿命化を図るこ
とを目的とする。The present invention solves these conventional drawbacks, and aims to provide an electrolytic solution with high conductivity and little deterioration at high temperatures, to improve the loss characteristics of electrolytic capacitors, and to extend their lifespan at high temperatures. do.
問題点を解決するだめの手段
上記問題点を解決するだめに、本発明はγ−ブチロラク
トンを主体とする溶媒に、マレイン酸のテトラメチルア
ンモニウム塩あるいは、テトラエチルアンモニウム塩を
溶解して溶質とし、さらにアルキルリン酸エステルもし
くはその塩および／まだはＰ−ニトロ安息香酸もしくは
その塩を添加剤として用いる電解コンデンサ駆動用電解
液である。Means for Solving the Problems In order to solve the above problems, the present invention dissolves a tetramethylammonium salt or a tetraethylammonium salt of maleic acid as a solute in a solvent mainly composed of γ-butyrolactone, and further This is an electrolytic solution for driving an electrolytic capacitor that uses an alkyl phosphate or a salt thereof and/or P-nitrobenzoic acid or a salt thereof as additives.
アルキルリン酸エステルのアルキル基はどのようなもの
を用いても効果は認められるが、好ましくハ、モノエチ
ルリン酸エステル、モツプチルリン酸エステル、モツプ
チルリン酸エステル、モノペンチルリン酸エステル、ジ
エチルリン酸エステル、ジプロピルリン酸エステル、ジ
プチルリン酸エステル、ジペンチルリン酸エステルおよ
びこれらの塩である。Although any alkyl group in the alkyl phosphate ester can be used, the effect is recognized, but C. monoethyl phosphate, motsuputyl phosphate, motsuputyl phosphate, monopentyl phosphate, diethyl phosphate, dipropyl phosphate ester, diptyl phosphate, dipentyl phosphate, and salts thereof.
アルキルリン酸エステルもしくはその塩の添加量は、電
解液量に対して０．０１〜５．０重量％が好ましい。こ
れは０．０１重量％以下では効果がなく、５．０重量％
を越えると電導度低下が大きくなるからである。The amount of the alkyl phosphoric acid ester or its salt added is preferably 0.01 to 5.0% by weight based on the amount of the electrolytic solution. This has no effect below 0.01% by weight, and 5.0% by weight
This is because if the value exceeds 100%, the conductivity will decrease significantly.
Ｐ−ニトロ安息香酸もしくはその塩の添加量は電解液量
に対して０．０１〜６．０重量％が好ましい。The amount of P-nitrobenzoic acid or its salt added is preferably 0.01 to 6.0% by weight based on the amount of electrolyte.
これは０．０１重量％以下では効果がなく、Ｓ、Ｏ重量
係を越えると火花電圧が低下するからである。This is because if it is less than 0.01% by weight, there is no effect, and if it exceeds the weight ratio of S and O, the spark voltage decreases.
作用
γ−ブチロラクトンを主体とする溶媒に、マレイン酸の
テトラメチルアンモニウム塩あるいは、テトラエチルア
ンモニウム塩を溶質として組合わせた場合非常に高い電
寿度が得られる。Function: When a solvent mainly composed of γ-butyrolactone is combined with a tetramethylammonium salt or a tetraethylammonium salt of maleic acid as a solute, a very high electric life can be obtained.
γ−ブチロラクトンを主体とする溶媒の時、マレイン酸
は高温中で比較的分解しにくく、またテトラメチルアン
モニウムあるいはテトラエチルアンモニウムとの反応も
起こりにくい。このため高温中での特性変化がきわめて
低い電解液が得られると考えられる。When the solvent is mainly composed of γ-butyrolactone, maleic acid is relatively difficult to decompose at high temperatures, and reaction with tetramethylammonium or tetraethylammonium is also difficult to occur. Therefore, it is thought that an electrolytic solution with extremely low change in properties at high temperatures can be obtained.
さらにアルキルリン酸エステル、あるいはｐ −二トロ
安息香酸がアルミニウム電極箔表面に吸着し、誘電体酸
化皮膜を保護することにより、静電容量の減少及びｔａ
ｎδの増加が大幅に抑制できるものと考えられる。Furthermore, alkyl phosphoric acid ester or p-nitrobenzoic acid adsorbs to the surface of the aluminum electrode foil and protects the dielectric oxide film, thereby reducing capacitance and ta
It is considered that the increase in nδ can be significantly suppressed.
実施例 以下、本発明による実施例について述べる。Example Examples according to the present invention will be described below.
表１に本発明の実施例及び従来の電解液組成例、並びに
常温における比電導度を示す。Table 1 shows examples of the present invention and conventional electrolyte compositions, as well as specific conductivities at room temperature.
（以下余白）
表１ 実施例並びに従来例の電解液組成及び比電導度衣
１から明らかなように、従来の電解液と比較して高い比
電導度を得ることができる。(The following is a blank space) Table 1 As is clear from the electrolyte composition and specific conductivity of Examples and Conventional Examples, a higher specific conductivity can be obtained compared to the conventional electrolyte.
表２に、表１の従来例１、従来例２、実施例１、実施例
２、実施例３および実施例６の電解液を用いたコンデン
サの初期特性を示す。試料コンデンサは６．３ Ｖ １
０００μＦ（φ１ｏ×１２．５）のアルミ電解コンデン
サである。Table 2 shows the initial characteristics of capacitors using the electrolytes of Conventional Example 1, Conventional Example 2, Example 1, Example 2, Example 3, and Example 6 shown in Table 1. The sample capacitor is 6.3 V 1
It is an aluminum electrolytic capacitor of 000μF (φ10×12.5).
表２ 初期特性比較
表２から明らかなように、実施例は従来例と比較してｔ
ａｎδを低くすることができる。Table 2 Initial Characteristic Comparison As is clear from Table 2, the example has a t
anδ can be lowered.
第１図〜第３図に、表２で示したアルミ電解コンデンサ
の１２６°Ｃにおける特性経時変化を示している。第１
図は定格電圧印加における静電容量変化、第２図は定格
電圧印加における損失角の正接変化、第３図は電圧印加
なしにおける漏れ電流変化を示す図である。Figures 1 to 3 show changes in characteristics over time at 126°C of the aluminum electrolytic capacitors shown in Table 2. 1st
The figure shows the capacitance change when the rated voltage is applied, FIG. 2 shows the loss angle tangent change when the rated voltage is applied, and FIG. 3 shows the leakage current change when no voltage is applied.
この第１図〜第３図から明らかなように、高温中におい
ても特性変化はきわめて小さく、信頼性の高いコンデン
サを得ることができる。As is clear from FIGS. 1 to 3, the change in characteristics is extremely small even at high temperatures, and a highly reliable capacitor can be obtained.
発明の効果
以上のように本発明によれば、従来の電解液と比較して
、損失特性を改善でき、しかも１２６°Ｃという高温中
でもきわめて安定な信頼性の高い電解コンデンサを提供
でき、工業的価値の犬なるものである。Effects of the Invention As described above, according to the present invention, it is possible to provide a highly reliable electrolytic capacitor that has improved loss characteristics compared to conventional electrolytes and is extremely stable even at a high temperature of 126°C. It is a dog of value.
第１図〜第３図はそれぞれ従来の電解液および本発明の
電解液を用いた定格６．３ ”７１０００μＦ（φｔｏ
ｘ１２．ｓ）のアルミ電解コンデンサの１２５°Ｃにお
ける特性経時変化を示したものであり、第１図は定格電
圧印加における静電容量変化、第２図は定格電圧印加に
おける損失角の正接変化、第３図は電圧印加なしにおけ
る漏れ電流変化を示した特性図である。Figures 1 to 3 show the rated 6.3"71000μF (φto
x12. Figure 1 shows the change in capacitance when the rated voltage is applied, Figure 2 shows the change in the tangent of the loss angle when the rated voltage is applied, and Figure 3 shows the changes in the characteristics of the aluminum electrolytic capacitor (s) at 125°C. The figure is a characteristic diagram showing changes in leakage current when no voltage is applied.
Claims (4)
ン酸のテトラメチルアンモニウム塩あるいはテトラエチ
ルアンモニウム塩を溶質とし、アルキルリン酸エステル
もしくはその塩、および／またはＰ−ニトロ安息香酸も
しくはその塩を添加溶解したことを特徴とする電解コン
デンサ駆動用電解液。(1) Add and dissolve an alkyl phosphoric acid ester or its salt and/or P-nitrobenzoic acid or its salt in a solvent mainly composed of γ-butyrolactone, using a tetramethylammonium salt or a tetraethylammonium salt of maleic acid as a solute. An electrolytic solution for driving an electrolytic capacitor, which is characterized by:
のような化学構造のものである特許請求の範囲第１項記
載の電解コンデンサ駆動用電解液。 （Ａ）▲数式、化学式、表等があります▼（Ｂ）▲数式
、化学式、表等があります▼ Ｒはアルキル基(2) The alkyl phosphate ester is the following (A) or (B)
The electrolytic solution for driving an electrolytic capacitor according to claim 1, which has a chemical structure as follows. (A) ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ (B) ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ R is an alkyl group
が電解液重量に対して０．０１〜０．０重量％であるこ
とを特徴とする特許請求の範囲第２項記載の電解コンデ
ンサ駆動用電解液。(3) The electrolyte for driving an electrolytic capacitor according to claim 2, wherein the amount of the alkyl phosphate ester or its salt added is 0.01 to 0.0% by weight based on the weight of the electrolytic solution. liquid.
解液重量に対して０．０１〜６．０重量％であることを
特徴とする特許請求の範囲第１項記載の電解コンデンサ
駆動用電解液。(4) For driving an electrolytic capacitor according to claim 1, wherein the amount of P-nitrobenzoic acid or its salt added is 0.01 to 6.0% by weight based on the weight of the electrolytic solution. Electrolyte.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9657187A JPH07120615B2 (en) | 1987-04-20 | 1987-04-20 | Electrolytic solution for driving electrolytic capacitors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9657187A JPH07120615B2 (en) | 1987-04-20 | 1987-04-20 | Electrolytic solution for driving electrolytic capacitors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63261822A true JPS63261822A (en) | 1988-10-28 |
| JPH07120615B2 JPH07120615B2 (en) | 1995-12-20 |
Family
ID=14168685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9657187A Expired - Fee Related JPH07120615B2 (en) | 1987-04-20 | 1987-04-20 | Electrolytic solution for driving electrolytic capacitors |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07120615B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63302514A (en) * | 1987-06-02 | 1988-12-09 | Nichicon Corp | Electrolyte for driving aluminum electrolytic capacitor |
-
1987
- 1987-04-20 JP JP9657187A patent/JPH07120615B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63302514A (en) * | 1987-06-02 | 1988-12-09 | Nichicon Corp | Electrolyte for driving aluminum electrolytic capacitor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07120615B2 (en) | 1995-12-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |