JPS631014A - Electrolyte for capacitor - Google Patents
Electrolyte for capacitorInfo
- Publication number
- JPS631014A JPS631014A JP14458186A JP14458186A JPS631014A JP S631014 A JPS631014 A JP S631014A JP 14458186 A JP14458186 A JP 14458186A JP 14458186 A JP14458186 A JP 14458186A JP S631014 A JPS631014 A JP S631014A
- Authority
- JP
- Japan
- Prior art keywords
- electrolytic solution
- electrolyte
- phosphoric acid
- quaternary phosphonium
- capacitor
- 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】
本発明によれば、電導塵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 According to the present invention, an excellent electrolytic solution for capacitors (hereinafter sometimes simply referred to as electrolytic solution) with high conductive dust 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価直列抵
抗（Ｈ８Ｒ）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 it has been found that the characteristics of the electrolyte that is housed in the outer case together with the capacitor element have a particularly large effect on the impedance or equivalent series resistance (H8R). are doing.
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使用され
ている〇
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ビーターの高周波化
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。For example, electrolytic capacitors have traditionally used ethylene glycol-ammonium adipate based electrolytes.Problems to be solved by the inventionHowever, as the frequency of switching regulators has increased in recent years, even lower frequencies have been used. Capacitors with low impedance or low equivalent series resistance are needed, and the development of electrolytes with high conductivity is desired.
本発明者らは、電導塵の高い電解液を見い出すべく鋭意
検討を行ない、燐酸の四級ホスホニウム塩が高い電導塵
を示すことを見い出し本発明を完成した。The present inventors conducted extensive research to find an electrolytic solution with high conductive dust, and found that a quaternary phosphonium salt of phosphoric acid exhibits high conductive dust, and completed the present invention.
即ち、本発明は燐酸の四級ホスホ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 in that a quaternary phosphonium salt of phosphoric acid is used as a solute.
本発明において溶質として用いられる燐酸の四級ホスホ
ニウム塩における四級ホスホニウム塩としては、テトラ
メチルホスホニウム、テトラエチルホスホニウム、テト
ラプロピルホスホニウム、テトラブチルホスホニウム、
メチルトリエチルホスホニウム、メチルトリプロピルホ
スホニウム、メチルトリブチルホスホニウム、ジメチル
ジエチルホスホニウム、ジメチルジプロピルホスホニウ
ム、ジメチルジブチルホスホニウム、トリメチルエチル
ホスホニウム、トリエチルブチルホスホニウム、トリメ
チルブチルホスホニウム、二チルトリプロピルホスホニ
ウム、エチルトリブチルホスホニウム、ジエチルジプロ
ピルホスホニウム、ジエチルジブチルホスホニウム、ト
リエチルブチルホスホニウム、トリエチルブチルホスホ
ニウム、プロピルトリブチルホスホニウム、ジプロピル
ジブチルホスホニウム、トリプロピルブチルホスホニウ
ム等の脂肪族四級ホスホニウム塩および、１．１−ジメ
チルホスホラニウム、１−メチル−１−エチルホスホラ
ニウム、１．１−ジエチルホスホラニウム、１，１−ジ
エチルホスホラニウム、１−メチル−１−エチルホスホ
ラニウム、１．１−ジエチルホスホラニウム、１．１−
ペンタメチレンホスホリナニウム等の指環式四級ホスホ
ニウム塩を例示することができる。Examples of the quaternary phosphonium salt of phosphoric acid used as a solute in the present invention include tetramethylphosphonium, tetraethylphosphonium, tetrapropylphosphonium, tetrabutylphosphonium,
Methyltriethylphosphonium, methyltripropylphosphonium, methyltributylphosphonium, dimethyldiethylphosphonium, dimethyldipropylphosphonium, dimethyldibutylphosphonium, trimethylethylphosphonium, triethylbutylphosphonium, trimethylbutylphosphonium, dithyltripropylphosphonium, ethyltributylphosphonium, diethyldi Aliphatic quaternary phosphonium salts such as propylphosphonium, diethyldibutylphosphonium, triethylbutylphosphonium, triethylbutylphosphonium, propyltributylphosphonium, dipropyldibutylphosphonium, tripropylbutylphosphonium, and 1.1-dimethylphosphoranium, 1-methyl -1-Ethylphosphoranium, 1.1-diethylphosphoranium, 1,1-diethylphosphoranium, 1-methyl-1-ethylphosphoranium, 1.1-diethylphosphoranium, 1.1-
Examples include ring-type quaternary phosphonium salts such as pentamethylenephospholinanium.
本発明の燐酸の四級ホスホ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、ｒ−７’チロラクトン、γ−パＶロラクト
ン、δ−バＶ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Ｋ、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の毒性が低く、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 the solvent for dissolving the quaternary phosphonium salt of phosphoric acid of the present invention include N-methylformamide, N-ethylformamide, N,N-dimethylformamide, N,N-diethylformamide, N-methylacetamide, N-ethylacetamide, N,N-dimethylacetamide, N,N
- Amide solvents such as diethylacetamide and N-methylpyrrolidinone, lactone solvents such as r-7' tyrolactone, γ-pa-V rolactone, and δ-va-V rolactone, carbonate solvents such as ethylene carbonate, propylene carbonate, butylene carbonate, and ethylene glycol. , glycerin, alcohol-soluble K such as methyl cellosolve, 3-
Examples include nitrile solvents such as methoxypropionitrile, and phosphoric acid ester solvents such as trimethyl phosphate, 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 capacitor sealants or contain halogens.
上記溶媒に対する燐酸の四級ホスホニウム塩の溶解量は
飽和濃度以下、好ましくは１〜４０重量％である。The amount of the quaternary phosphonium salt of phosphoric acid dissolved in the above solvent is below the saturation concentration, preferably 1 to 40% by weight.
また、上記電解液中の溶解塩は中性塩でも酸性塩でも良
い。Further, the dissolved salt in the electrolytic solution may be a neutral salt or an acidic salt.
本発明の電解液は、本質的には、燐酸の四級ホスホニウ
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 phosphonium salt of phosphoric acid and a solvent, but has the following properties: prevention of galvanic corrosion, reduction of leakage current, etc.
Small amounts of co-solutes may be added for various purposes.
発明の効果
本発明で溶質として使用する燐酸の四級ホスホニウム塩
は溶媒に対する溶解性が良く、その電解液は高い電導度
を示し、凝固点〜沸点範囲の広す溶媒と伴疋用いること
により、使用温度範囲の広−コンデンサ用電解液となる
。Effects of the Invention The quaternary phosphonium salt of phosphoric acid used as a solute in the present invention has good solubility in solvents, and its electrolyte exhibits high conductivity. Wide temperature range - suitable as an electrolyte for capacitors.
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
ｒ−ブチロラクトン溶媒に２０重ｔチの燐酸のテトラブ
チルホスホニウム塩を溶解して電解液を得九〇この電解
液の２５℃における電導度は６．５ｍ５１０ｎであった
。Example 1 An electrolytic solution was obtained by dissolving 20 parts of a tetrabutylphosphonium salt of phosphoric acid in an r-butyrolactone solvent.The conductivity of this electrolytic solution at 25°C was 6.5m510n.
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りに
、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７、６ ｍｓ／ｃ１
ｎ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 7.6 ms/c1
It was n.
実施例３
実施例１において、ｒ−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ば６．５ｍｓ／信であった。Example 3 In Example 1, an electrolytic solution was prepared using a propylene carbonate solvent instead of the r-butyrolactone solvent. The electrical conductivity of this electrolyte was 6.5 ms/sec.
Claims (1)
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 phosphonium salt of phosphoric acid as a solute.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14458186A JPS631014A (en) | 1986-06-20 | 1986-06-20 | Electrolyte for capacitor |
| EP87304335A EP0246825B1 (en) | 1986-05-20 | 1987-05-15 | Quaternary salt solution electrolyte for electrolytic capacitors |
| DE8787304335T DE3768141D1 (en) | 1986-05-20 | 1987-05-15 | ELECTROLYTIC SOLUTION OF QUATERNAIAL SALTS FOR ELECTROLYTIC CAPACITOR. |
| US07/050,574 US4774011A (en) | 1986-05-20 | 1987-05-18 | Electrolyte for aluminum electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14458186A JPS631014A (en) | 1986-06-20 | 1986-06-20 | Electrolyte for capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS631014A true JPS631014A (en) | 1988-01-06 |
Family
ID=15365462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14458186A Pending JPS631014A (en) | 1986-05-20 | 1986-06-20 | Electrolyte for capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS631014A (en) |
-
1986
- 1986-06-20 JP JP14458186A patent/JPS631014A/en active Pending
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