JPS635510A - Electrolyte for capacitor - Google Patents
Electrolyte for capacitorInfo
- Publication number
- JPS635510A JPS635510A JP14869986A JP14869986A JPS635510A JP S635510 A JPS635510 A JP S635510A JP 14869986 A JP14869986 A JP 14869986A JP 14869986 A JP14869986 A JP 14869986A JP S635510 A JPS635510 A JP S635510A
- Authority
- JP
- Japan
- Prior art keywords
- quaternary ammonium
- electrolytic solution
- electrolyte
- capacitor
- solvents
- 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
- Electric Double-Layer Capacitors Or The Like (AREA)
- Networks Using Active Elements (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
本発明によれば、電導度の高い優れたコンデンサ用電解
液（以下単に電解液と称することがある）が得られる。DETAILED DESCRIPTION OF THE INVENTION Industrial Field of Application According to the present invention, an excellent electrolytic solution for capacitors (hereinafter sometimes simply referred to as electrolytic solution) with high conductivity can be obtained.
従来の技術
］ンデンサの特性は種々の要因によって決定されている
が、特にコンデンサ素子とともに外装ケースに収納され
る電解液の特性は、インピーダンスあるいは等個直列抵
抗（ＥＳＲ）に大きな影響を及ぼすことが判明している
。[Prior art] The characteristics of a capacitor are determined by various factors, but in particular, the characteristics of the electrolyte that is housed in the outer case together with the capacitor element can have a large effect on impedance or equal series resistance (ESR). It's clear.
たとえば、電解コンデンサには、従来よりエチレンクリ
コール−アジピン酸アンモニウム系の電解液が実用され
ている。For example, ethylene glycol-ammonium adipate-based electrolytes have been used in electrolytic capacitors.
発明が解決しようとする問題点
しかし、近年のスイッチングレギュレーターの高周波化
に伴ない、更に低インピーダンスあるいは低等価直列抵
抗のコンデンサが必要となり、高電導度の電解液の開発
が望まれている。Problems to be Solved by the Invention However, as the frequency of switching regulators has increased in recent years, capacitors with lower impedance or lower equivalent series resistance are required, and the development of electrolytes with high conductivity is desired.
問題を解決するための手段
本発明者らは、電導度の高い電解液を見い出すへく鋭意
検討を行ない、チオシアン酸の四級アンモニウム塩が高
い電導度を示すことを見い出し本発明を完成した。Means for Solving the Problem The present inventors conducted extensive research to find an electrolytic solution with high conductivity, and completed the present invention by discovering that quaternary ammonium salts of thiocyanic acid exhibit high conductivity.
即ち、本発明はチオシアン酸の四級アンモニウム塩を溶
質として使用することを特徴とするコンデンサ用電解液
を提供するものである。That is, the present invention provides an electrolytic solution for a capacitor characterized by using a quaternary ammonium salt of thiocyanic acid as a solute.
発明の詳細な説明
本発明において溶質として用いられるチオシアン酸の四
級アンモニウム塩における四級アンモニウム塩としては
、テトラエチルアンモニウム、テトラプロピルアンモニ
ウム、テトラブチルアンモニウム、メチルトリエチルア
ンモニウム、メチルトリプロピルアンモニウム、メチル
トリブチルアンモニウム、ジメチルジエチルアンモニウ
ム、ジメチルジエチルアンモニウム、ジメチルジプチル
アンモニウム、エチルトリプロピルアンモニウム、エテ
ルトリブチルアンモニウム等の脂肪族四級７ンモニウム
塩、Ｎ、Ｎ−ジメチルピロリジニウム、Ｎ、Ｎ−ジメチ
ルピペリジニウム、Ｎ−メチル−Ｎ−エチルピロリジニ
ウム、Ｎ−メチル−Ｎ−エチルピペリジニウム、Ｎ、Ｎ
−ペンタメチレンピペリジニウム等の脂環式四級アンモ
ニウム塩、Ｎ−エチルピリジニウム等の芳香族四級アン
モニウム塩を例示することができる。Detailed Description of the Invention Examples of quaternary ammonium salts in the quaternary ammonium salt of thiocyanic acid used as a solute in the present invention include tetraethylammonium, tetrapropylammonium, tetrabutylammonium, methyltriethylammonium, methyltripropylammonium, and methyltributylammonium. , aliphatic quaternary heptammonium salts such as dimethyldiethylammonium, dimethyldiethylammonium, dimethyldiptylammonium, ethyltripropylammonium, etheltributylammonium, N,N-dimethylpyrrolidinium, N,N-dimethylpiperidinium, N-methyl-N-ethylpyrrolidinium, N-methyl-N-ethylpiperidinium, N,N
Examples include alicyclic quaternary ammonium salts such as -pentamethylene piperidinium and aromatic quaternary ammonium salts such as N-ethylpyridinium.
本発明のチオシアン酸の四級アンモニウム塩を溶解させ
る溶媒としては、Ｎ−メチルホルムアミド、Ｎ−エチル
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−メチルアセトアミド、Ｎ
−エチルアセトアミド、Ｎ、Ｎ−ジメチルアセトアミド
、Ｎ、Ｎ−ジエチルアセトアミド、Ｎ−メチルピロリジ
ノン等のアミド溶媒、γ−ブチロラクトン、ｒ−バレロ
ラクトン、δ−バレロラクトン等のラクトン溶媒、エチ
レンカーボネート、プロピレンカーボネート、ブチレン
カーボネート等のカーボネート溶媒、エチレングリコー
ル、グリセリン、メチルセロソルブ等のアルコール溶媒
、３−メトキシプロピオニトリル等のニトリル溶媒、お
よびトリメチルホスフェート等の燐酸エステル溶媒の単
独あるいは混合溶媒を例示することができる。これらの
中でもγ−ブチロラクトンを主体とする溶媒が毒性が低
く、コンデンサの封孔剤のアタックやハロゲンの混入が
少ない等のことから特に好ましい。Examples of solvents for dissolving the quaternary ammonium salt of thiocyanic acid of the present invention include N-methylformamide, N-ethylformamide, N,N-dimethylformamide, N,N
-diethylformamide, N-methylacetamide, N
- Amide solvents such as ethylacetamide, N,N-dimethylacetamide, N,N-diethylacetamide, N-methylpyrrolidinone, lactone solvents such as γ-butyrolactone, r-valerolactone, δ-valerolactone, ethylene carbonate, propylene carbonate Examples include carbonate solvents such as butylene carbonate, alcohol solvents such as ethylene glycol, glycerin, and methyl cellosolve, nitrile solvents such as 3-methoxypropionitrile, and phosphoric acid ester solvents such as trimethyl phosphate, either alone or in combination. . Among these, a solvent mainly composed of γ-butyrolactone is particularly preferred because it has low toxicity and is less likely to attack the capacitor sealant or be contaminated with halogen.
上記溶媒に対するチオシアン酸の四級アンモニウム塩の
溶解量は飽和濃度以下、１〜４０重景％である。The amount of the quaternary ammonium salt of thiocyanate dissolved in the above solvent is below the saturation concentration, which is 1 to 40% by weight.
本発明の電解液は、本質的には、チオシアン酸の四級ア
ンモニウム塩と溶媒よりなるが、電蝕防止、漏れ電流の
低減等、種々の目的で少量の助溶質を添加しても差し支
えない。The electrolytic solution of the present invention essentially consists of a quaternary ammonium salt of thiocyanate and a solvent, but a small amount of co-solute may be added for various purposes such as preventing galvanic corrosion and reducing leakage current. .
発明の効果
本発明で溶質として使用するチオシアン酸の四級アンモ
ニウム塩は溶媒に対する溶解性が良く、そのｔＳ液は高
い電導度を示し、凝固点〜沸点範囲の広い溶媒と伴に用
いることにより、使用温度範囲の広いコンデンサ用電解
液となる。Effects of the Invention The quaternary ammonium salt of thiocyanate used as a solute in the present invention has good solubility in solvents, and its tS liquid exhibits high conductivity. This is an electrolyte for capacitors that has a wide temperature range.
実験例 以下に実施例を挙げて本発明を更に具体的に説明する。Experimental example The present invention will be explained in more detail with reference to Examples below.
実施例１
γ−ブチロラクトン溶媒に２０重量シのチオシアン酸の
テトラエチルアンモニウム塩を溶解して電解液を得た。Example 1 An electrolytic solution was obtained by dissolving 20 weight units of tetraethylammonium salt of thiocyanic acid in a γ-butyrolactone solvent.
この電解液の２５℃における電導度ば２０．５ ｍ３／
副であった。The electrical conductivity of this electrolyte at 25°C is 20.5 m3/
He was a deputy.
実施例２
実施例１において、γ−ブチロラクトン溶媒の代わしに
、Ｎ、Ｎ−ジメチルホルムアミド溶媒を使用した電解液
を作成した。この電解液の電導度は２６．４ ｍＳ／Ｃ
Ｍであった。Example 2 In Example 1, an electrolytic solution was prepared using N,N-dimethylformamide solvent instead of the γ-butyrolactone solvent. The conductivity of this electrolyte is 26.4 mS/C
It was M.
実施例３
実施例１において、γ−ブチロラクトン溶媒の代わりに
、プロピレンカーボネート溶媒を使用した電解液を作成
した。この電解液の電導度は１６．４ｍＳ、／ｍであっ
た。Example 3 In Example 1, an electrolytic solution was prepared using a propylene carbonate solvent instead of the γ-butyrolactone solvent. The conductivity of this electrolytic solution was 16.4 mS,/m.
Claims (1)
ることを特徴とするコンデンサ用電解液。An electrolytic solution for capacitors characterized by using a quaternary ammonium salt of thiocyanate as a solute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14869986A JPS635510A (en) | 1986-06-25 | 1986-06-25 | Electrolyte for capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14869986A JPS635510A (en) | 1986-06-25 | 1986-06-25 | Electrolyte for capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS635510A true JPS635510A (en) | 1988-01-11 |
Family
ID=15458618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14869986A Pending JPS635510A (en) | 1986-06-25 | 1986-06-25 | Electrolyte for capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS635510A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5808284A (en) * | 1996-01-11 | 1998-09-15 | Accumed International, Inc. | System and method for use of a circular bar code |
-
1986
- 1986-06-25 JP JP14869986A patent/JPS635510A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5808284A (en) * | 1996-01-11 | 1998-09-15 | Accumed International, Inc. | System and method for use of a circular bar code |
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