JPS635508A - Electrolyte for capacitor - Google Patents

Electrolyte for capacitor

Info

Publication number
JPS635508A
JPS635508A JP14869786A JP14869786A JPS635508A JP S635508 A JPS635508 A JP S635508A JP 14869786 A JP14869786 A JP 14869786A JP 14869786 A JP14869786 A JP 14869786A JP S635508 A JPS635508 A JP S635508A
Authority
JP
Japan
Prior art keywords
electrolyte
quaternary phosphonium
electrolytic solution
capacitor
nitric acid
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
Application number
JP14869786A
Other languages
Japanese (ja)
Inventor
森 彰一郎
誠 宇恵
和彦 井田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Petrochemical Co Ltd
Original Assignee
Mitsubishi Petrochemical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Petrochemical Co Ltd filed Critical Mitsubishi Petrochemical Co Ltd
Priority to JP14869786A priority Critical patent/JPS635508A/en
Priority to DE8787304335T priority patent/DE3768141D1/en
Priority to EP87304335A priority patent/EP0246825B1/en
Priority to US07/050,574 priority patent/US4774011A/en
Publication of JPS635508A publication Critical patent/JPS635508A/en
Pending legal-status Critical Current

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  • Networks Using Active Elements (AREA)
  • Electric Double-Layer Capacitors Or The Like (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 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 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(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 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 (ESR). are doing.

たとえば、電解コンデンサには、従来よレエチレングリ
コールーアジピン酸アンモニウム系の電解液が使用され
ている。
For example, electrolytic capacitors have conventionally used a leethylene glycol-ammonium adipate based electrolyte.

発明が解決しようとする問題点 シカシ、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抄、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 As the frequency of switching regulators has become higher in recent years, there is a need for capacitors with lower impedance or lower equivalent series resistance, and the development of electrolytes with higher conductivity is desired. .

問題を解決するための手段 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、硝酸の四級ホスホニウム塩が高い電導塵
を示すことを見r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 conductive dust, found that a quaternary phosphonium salt of nitric acid exhibits high conductive dust, and completed the present invention.

即ち、本発明は硝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 nitric acid is used 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硝酸の四級ホスホ
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、テトラメチルホスホニウム、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、
メチルトリニブルホスホニウム、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、ジエチル
ジブチルホスホニウム、ジメ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、トリメチルエチル
ホスホニウム、トリメチルプロピルホスホニウム、トリ
メチルブチルホスホニウム、エチルトリプロピルホスホ
ニウム、ニブルトリブチルホスホニウム、ジメチルジプ
ロピルホスホニウム、ジエチルジブチルホスホニウム、
トリメチルプロピルホスホニウム、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、ジエチ
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、l、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−
ペンタメデレンホスホリナニウム等の脂環式四級ホスホ
ニウム塩を例示することができる。
Detailed Description of the Invention Examples of the quaternary phosphonium salt of nitric acid used as a solute in the present invention include tetramethylphosphonium, tetramethylphosphonium, tetrapropylphosphonium, tetrabutylphosphonium,
Methyltrinibblephosphonium, methyltripropylphosphonium, methyltributylphosphonium, diethyldibutylphosphonium, dimethyldipropylphosphonium, diethyldibutylphosphonium, trimethylethylphosphonium, trimethylpropylphosphonium, trimethylbutylphosphonium, ethyltripropylphosphonium, nibbletributylphosphonium, dimethyldibutylphosphonium Propylphosphonium, diethyldibutylphosphonium,
Aliphatic quaternary phosphonium salts such as trimethylpropylphosphonium, triethylbutylphosphonium, propyltributylphosphonium, diethyldibutylphosphonium, tripropylbutylphosphonium, and 1.1-dimethylphosphoranium, 1-methyl-1-ethylphosphoranium, 1 , 1-diethylphosphoranium, l, 1-diethylphosphoranium, 1-methyl-1-ethylphosphoranium, 1,1-diethylphosphoranium, 1,1-
Examples include alicyclic quaternary phosphonium salts such as pentamedelenephospholinanium.

本発明の硝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−ジエチルホルムアミド、N、N−ジエチ
ルホルムアミド、N−エチルアセトアミド、N−エチル
アセトアミド、N、N−ジエチルアセトアミド、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−プチロラクトン、T−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、クリ
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 the solvent for dissolving the quaternary phosphonium salt of nitric acid of the present invention include N-methylformamide, N-ethylformamide, N,N-diethylformamide, N,N-diethylformamide, N-ethylacetamide, N-ethylacetamide, N,N-diethylacetamide, N,N
- Amide solvents such as diethylacetamide and N-methylpyrrolidinone, lactone solvents such as r-butyrolactone, T-valerolactone, and δ-valerolactone, carbonate solvents such as ethylene carbonate, propylene carbonate, and butylene carbonate, ethylene glycol, chrycerin, and methyl Examples include alcohol solvents such as cellosolve, nitrile solvents such as 3-methoxypropionitrile, and phosphoric acid ester solvents such as trimethyl phosphate, either alone or in combination. Among these, γ
- A solvent mainly composed of butyrolactone is particularly preferable because it has low toxicity and is less likely to attack capacitor sealants or contain halogens.

上記溶媒に対する硝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重量警である。
The amount of the quaternary phosphonium salt of nitric acid dissolved in the above solvent is below the saturation concentration, preferably 1 to 40 mw.

本発明の電解液は、本質的には、硝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 nitric 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硝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〜沸点範囲の広い溶媒と伴に用いること
によ抄、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 phosphonium salt of nitric acid used as a solute in the present invention has good solubility in solvents, and its electrolyte exhibits high conductivity. This is an electrolyte for capacitors that can be used in 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 r−ブチロラクトン溶媒に20重量シの硝酸のテトラニ
ブルホスホニウム塩を溶解して電解液を得た。この電解
液の25℃における電導度は15.3ms/lIであっ
た。
Example 1 An electrolytic solution was obtained by dissolving 20 wt. The conductivity of this electrolytic solution at 25° C. was 15.3 ms/lI.

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すに
、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20.6 m87c
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 20.6 m87c
It was m.

Claims (1)

【特許請求の範囲】[Claims] 硝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。
An electrolytic solution for capacitors characterized by using a quaternary phosphonium salt of nitric acid as a solute.
JP14869786A 1986-05-20 1986-06-25 Electrolyte for capacitor Pending JPS635508A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP14869786A JPS635508A (en) 1986-06-25 1986-06-25 Electrolyte for capacitor
DE8787304335T DE3768141D1 (en) 1986-05-20 1987-05-15 ELECTROLYTIC SOLUTION OF QUATERNAIAL SALTS FOR ELECTROLYTIC CAPACITOR.
EP87304335A EP0246825B1 (en) 1986-05-20 1987-05-15 Quaternary salt solution electrolyte for electrolytic capacitors
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
JP14869786A JPS635508A (en) 1986-06-25 1986-06-25 Electrolyte for capacitor

Publications (1)

Publication Number Publication Date
JPS635508A true JPS635508A (en) 1988-01-11

Family

ID=15458573

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14869786A Pending JPS635508A (en) 1986-05-20 1986-06-25 Electrolyte for capacitor

Country Status (1)

Country Link
JP (1) JPS635508A (en)

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