JP2811703B2 - Electrolyte for driving electrolytic capacitors - Google Patents
Electrolyte for driving electrolytic capacitorsInfo
- Publication number
- JP2811703B2 JP2811703B2 JP1015355A JP1535589A JP2811703B2 JP 2811703 B2 JP2811703 B2 JP 2811703B2 JP 1015355 A JP1015355 A JP 1015355A JP 1535589 A JP1535589 A JP 1535589A JP 2811703 B2 JP2811703 B2 JP 2811703B2
- Authority
- JP
- Japan
- Prior art keywords
- driving
- electrolytic solution
- salt
- electrolyte
- electrolytic
- 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
- Electric Double-Layer Capacitors Or The Like (AREA)
- Secondary Cells (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、電解コンデンサ駆動用電解液に関するもの
である。Description: TECHNICAL FIELD The present invention relates to an electrolytic solution for driving an electrolytic capacitor.
従来の技術 従来、電解コンデンサ駆動用電解液として、エチレン
グリコールに硼酸或いはその塩を溶解した電解液が用い
られている。しかし、この種の電解液は比電導度が低
く、特に低温においては、インピーダンス特性が大きく
低下するという欠点がある。そのため特開昭61−70711
号公報に見られるように、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62−145713号公報にみられるように、マレイン酸の４
級アンモニウム塩を用いる例があるが、これらの電解液
に使用されている電解質を用いて高電導度を得ようとし
た場合、高い火花発生電圧が得られない。このような欠
点を解決するため、特開昭63−207115号公報には、タン
グステン酸，メタタングステン酸，パラタングステン酸
又はその塩を添加する例がある。2. Description of the Related Art Conventionally, an electrolytic solution obtained by dissolving boric acid or a salt thereof in ethylene glycol has been used as an electrolytic solution for driving an electrolytic capacitor. However, this type of electrolyte has a drawback that the specific conductivity is low, and particularly at low temperatures, the impedance characteristics are greatly reduced. Therefore, JP-A-61-70711
As disclosed in JP-A-62-145713, an example of using γ-butyrolactone as a solvent and using a triethylamine salt of phthalic acid is disclosed in JP-A-62-145713.
Although there is an example using a quaternary ammonium salt, a high spark generation voltage cannot be obtained when an attempt is made to obtain high conductivity using the electrolyte used in these electrolytes. In order to solve such a defect, Japanese Patent Application Laid-Open No. 63-207115 discloses an example in which tungstic acid, metatungstic acid, paratungstic acid or a salt thereof is added.
発明が解決しようとする課題 しかしながら、タングステン酸系の添加剤は溶解性が
悪く、得られた電解液の火花発生電圧も十分とはいえな
い。Problems to be Solved by the Invention However, the tungstic acid-based additive has poor solubility, and the spark generation voltage of the obtained electrolyte is not sufficient.
本発明はこのような従来の課題を解消し、高い比電導
度でかつ、高い火花発生電圧を有する電解液を得ること
を目的とする。An object of the present invention is to solve such a conventional problem and to obtain an electrolyte having a high specific conductivity and a high spark generation voltage.
課題を解決するための手段 上記課題を解決するために本発明は、γ−ブチロラク
トンを主体とする溶媒に、フタル酸および／またはフタ
ル酸塩を溶解し、モリブデン酸および／またはその塩を
添加することを特徴とする電解コンデンサ駆動用電解液
である。モリブデン酸塩としては、アルカリ金属塩，ア
ンモニウム塩，アミン塩,4級アンモニウム塩等がある。Means for Solving the Problems To solve the above problems, the present invention dissolves phthalic acid and / or phthalate in a solvent mainly composed of γ-butyrolactone, and adds molybdic acid and / or a salt thereof. An electrolytic solution for driving an electrolytic capacitor. Molybdates include alkali metal salts, ammonium salts, amine salts, quaternary ammonium salts and the like.
フタル酸アミン塩としては、メチルアミン，エチルア
ミン，ジエチルアミン，ジメチルアミン，トリメチルア
ミン，トリエチルアミン，ジメチルエチルアミン，ジエ
チルメチルアミン，ジメチルプロピルアミン，ジエチル
プロピルアミン，トリプロピルアミン等が考えられる
が、特にトリメチルアミン，トリエチルアミン，ジメチ
ルエチルアミン，ジエチルメチルアミンが好ましい。ま
た、フタル酸４級アンモニウム塩としては、テトラメチ
ル，テトラエチル，テトラプロピル，テトラブチル，メ
チルトリエチル，エチルトリメチル，ジエチルジメチ
ル，プロピルトリメチル，プロピルトリエチルアンモニ
ウム等が考えられるが、特に、テトラメチル，テトラエ
チル，メチルトリエチル，エチルトリメチルアンモニウ
ムが好ましい。Examples of the amine salt of phthalic acid include methylamine, ethylamine, diethylamine, dimethylamine, trimethylamine, triethylamine, dimethylethylamine, diethylmethylamine, dimethylpropylamine, diethylpropylamine, and tripropylamine. Among them, trimethylamine, triethylamine, Dimethylethylamine and diethylmethylamine are preferred. Examples of the quaternary ammonium phthalate include tetramethyl, tetraethyl, tetrapropyl, tetrabutyl, methyltriethyl, ethyltrimethyl, diethyldimethyl, propyltrimethyl, and propyltriethylammonium. Particularly, tetramethyl, tetraethyl, methyl Triethyl and ethyltrimethylammonium are preferred.
γ−ブチロラクトンに混合する溶媒としては、たとえ
ばアルコール類（メタノール，エタノール，プロピルア
ルコール，ブチルアルコール，エチレングリコール，プ
ロピレングリコール，グリセリン等）；アミド類（Ｎ−
メチルホルムアミド,N,N−ジメチルホルムアミド,N,N−
ジエチルホルムアミド,N,N−ジエチルアセトアミド
等）；カーボネート類（エチレンカーボネート，プロピ
レンカーボネート等），ジメチルスルホキシド，スルホ
ラン等、およびこれらの２種以上の混合物があげられる
が、特にエチレングリコールが好ましい。なお、上記電
解液に数％の水を加えてもさしつかえない。Examples of the solvent to be mixed with γ-butyrolactone include alcohols (methanol, ethanol, propyl alcohol, butyl alcohol, ethylene glycol, propylene glycol, glycerin, etc.); amides (N-
Methylformamide, N, N-dimethylformamide, N, N-
Examples thereof include diethylformamide, N, N-diethylacetamide and the like; carbonates (ethylene carbonate, propylene carbonate and the like), dimethylsulfoxide, sulfolane, and the like, and a mixture of two or more thereof, with ethylene glycol being particularly preferred. It should be noted that several percent of water may be added to the above electrolyte.
また、モリブデン酸および／またはその塩の添加量
は、0.001％以下では火花発生電圧の向上に、ほとんど
効果がなく、５％以上では溶解性が悪いため析出が生成
するため、0.01〜５％の範囲で用いることが好ましい。When the amount of molybdic acid and / or its salt is 0.001% or less, there is almost no effect on the improvement of the spark generation voltage, and when it is 5% or more, the solubility is poor and the precipitation is generated. It is preferable to use in the range.
作用 モリブデン酸および／またはその塩を添加することに
より、酸化皮膜の修腹能力が向上し、高い火花発生電圧
が得られるものである。Action By adding molybdic acid and / or a salt thereof, the abdominal capacity of the oxide film is improved, and a high spark generation voltage can be obtained.
実施例 以下、本発明による実施例について述べる。Examples Hereinafter, examples according to the present invention will be described.
表１に本発明実施例及び従来の電解液組成例、並びに
30℃における比電導度及び火花発生電圧を示す。Table 1 shows examples of the present invention and examples of conventional electrolyte compositions, and
The specific conductivity and the spark generation voltage at 30 ° C. are shown.
表１から明らかなように従来例の電解液に比較して本
発明の実施例は高い火花発生電圧を得ることができる。 As is clear from Table 1, the embodiment of the present invention can obtain a higher spark generation voltage than the conventional electrolytic solution.
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
て高電導度を有しかつ、火花発生電圧を高くすることが
でき、実用上きわめて有利なものである。Advantageous Effects of the Invention As described above, according to the present invention, it is possible to have a higher electric conductivity and a higher spark generation voltage than a conventional electrolytic solution, and it is extremely advantageous in practical use.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 森 啓治 大阪府門真市大字門真1006番地 松下電 器産業株式会社内 (72)発明者 潮 憲樹 大阪府門真市大字門真1006番地 松下電 器産業株式会社内 (56)参考文献 特開 平１−226146（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) H01G 9/035──────────────────────────────────────────────────の Continued on the front page (72) Keiji Mori, Inventor 1006 Kazuma Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. (56) References JP-A-1-226146 (JP, A) (58) Fields investigated (Int. Cl. 6 , DB name) H01G 9/035
Claims (5)
フタル酸および／またはフタル酸塩を溶解し、モリブデ
ン酸および／またはその塩を添加することを特徴とする
電解コンデンサ駆動用電解液。1. A solvent mainly composed of γ-butyrolactone,
An electrolytic solution for driving an electrolytic capacitor, characterized by dissolving phthalic acid and / or phthalate and adding molybdic acid and / or a salt thereof.
する請求項１記載の電解コンデンサ駆動用電解液。2. The electrolytic solution for driving an electrolytic capacitor according to claim 1, wherein the phthalate is an amine salt.
とを特徴とする請求項１記載の電解コンデンサ駆動用電
解液。3. The electrolytic solution for driving an electrolytic capacitor according to claim 1, wherein the phthalate is a quaternary ammonium salt.
レングリコールであることを特徴とする請求項１記載の
電解コンデンサ駆動用電解液。4. The electrolytic solution for driving an electrolytic capacitor according to claim 1, wherein the solvent mixed with γ-butyrolactone is ethylene glycol.
量が、電解液の重量に基づいて、0.01〜5.0％であるこ
とを特徴とする請求項１記載の電解コンデンサ駆動用電
解液。5. The electrolytic solution for driving an electrolytic capacitor according to claim 1, wherein the amount of molybdic acid and / or a salt thereof is 0.01 to 5.0% based on the weight of the electrolytic solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1015355A JP2811703B2 (en) | 1989-01-24 | 1989-01-24 | Electrolyte for driving electrolytic capacitors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1015355A JP2811703B2 (en) | 1989-01-24 | 1989-01-24 | Electrolyte for driving electrolytic capacitors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02194612A JPH02194612A (en) | 1990-08-01 |
| JP2811703B2 true JP2811703B2 (en) | 1998-10-15 |
Family
ID=11886493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1015355A Expired - Fee Related JP2811703B2 (en) | 1989-01-24 | 1989-01-24 | Electrolyte for driving electrolytic capacitors |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2811703B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002075793A (en) * | 2000-08-25 | 2002-03-15 | Nichicon Corp | Electrolyte for driving aluminum electrolytic capacitor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01226146A (en) * | 1988-03-07 | 1989-09-08 | Nichicon Corp | Driving electrolyte of electrolytic capacitor |
-
1989
- 1989-01-24 JP JP1015355A patent/JP2811703B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02194612A (en) | 1990-08-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |