JP3306630B2 - Electrolyte for driving aluminum electrolytic capacitors - Google Patents
Electrolyte for driving aluminum electrolytic capacitorsInfo
- Publication number
- JP3306630B2 JP3306630B2 JP33796391A JP33796391A JP3306630B2 JP 3306630 B2 JP3306630 B2 JP 3306630B2 JP 33796391 A JP33796391 A JP 33796391A JP 33796391 A JP33796391 A JP 33796391A JP 3306630 B2 JP3306630 B2 JP 3306630B2
- Authority
- JP
- Japan
- Prior art keywords
- salt
- compound
- driving
- aluminum electrolytic
- 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.)
- Expired - Fee Related
Links
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、アルミニウム（以下ア
ルミという）電極を有するアルミ電解コンデンサの駆動
用電解液に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrolytic solution for driving an aluminum electrolytic capacitor having aluminum (hereinafter referred to as "aluminum") electrodes.
【０００２】[0002]
【従来の技術】従来、アルミ乾式電解コンデンサの駆動
用電解液としては、一般に、エチレングリコールと硼酸
系、又はエチレングリコールと有機酸系を用いたものが
知られているが、前者は、エステル化によって生成する
水分の為に、アルミ電解コンデンサとした際に、１００
℃以上の環境下でコンデンサの内圧を上昇させ、破壊に
至らしめるという欠点があり、又、後者のごとく、有機
酸またはその塩類だけでは、必要十分な高い火花発生電
圧及び化成性を得ることができないという欠点があっ
た。2. Description of the Related Art Conventionally, as an electrolytic solution for driving an aluminum dry electrolytic capacitor, those using ethylene glycol and boric acid or ethylene glycol and organic acid are generally known. Due to the moisture generated by the aluminum electrolytic capacitor,
It has the drawback of increasing the internal pressure of the capacitor in an environment of ℃ or more, which may lead to destruction.Also, as in the latter case, it is possible to obtain a necessary and sufficient high spark generation voltage and chemical formation only with an organic acid or its salts. There was a disadvantage that it could not be done.
【０００３】[0003]
【発明が解決しようとする課題】本発明の目的は、従来
技術の有する問題点を解消し、高温時におけるアルミ電
解コンデンサの内圧の上昇を抑制し、火花発生電圧を充
分に高めたアルミ電解コンデンサを提供することによっ
て、広範囲の使用温度に耐え、寿命特性を著しく改良
し、コンデンサの信頼性を向上させることを目的とした
ものである。SUMMARY OF THE INVENTION An object of the present invention is to solve the problems of the prior art, to suppress an increase in the internal pressure of an aluminum electrolytic capacitor at high temperatures, and to sufficiently increase the spark generation voltage. Is intended to withstand a wide range of operating temperatures, significantly improve the life characteristics, and improve the reliability of the capacitor.
【０００４】[0004]
【課題を解決するための手段】本発明は、非水系有機溶
媒に次の化１で示される一般式を有する化合物又はその
塩を添加することを特徴とするアルミ電解コンデンサの
駆動用電解液に係るものである。According to the present invention, there is provided an electrolytic solution for driving an aluminum electrolytic capacitor, comprising adding a compound having the general formula shown by the following formula 1 or a salt thereof to a non-aqueous organic solvent. It is related.
【化１】 （但し、Ｒ1〜Ｒ4は、水素原子、又は炭素数１〜５のア
ルキル基、ＯＣＨ 3基もしくはＯＣ2Ｈ5基、ｎは繰り返
し単位である。）Embedded image(However, R1~ RFourIs a hydrogen atom or an atom having 1 to 5 carbon atoms.
Alkyl group, OCH ThreeGroup or OCTwoHFiveGroup, n is repeated
It is a unit. )
【０００５】本発明で使用される上記化１の一般式で示
される化合物（高分子物質）の式中のｎは、繰返し単位
で、ｎは、当該高分子物質の平均分子量が、１０3 〜１
０6（１０００〜１００万）となる範囲内の数であるこ
とが好ましい。当該分子量が、１０3未満では、充分な
特性を発揮し難く、一方、１０6を超えるときには、溶
解性が低下し、かつ、電解液の粘度が過度に上昇して、
いずれにしても本発明の目的を達成し難い。本発明で
は、当該化合物の塩を用いてもよい。当該塩は、例え
ば、第４級アンモニウム塩を含むアンモニウム塩、もし
くはアミン塩よりなる。その例としては、式中のＣＯＯ
Ｈ基のＨ原子が置換されＣＯＯＮＨ4、ＣＯＯＮ（Ｃ
Ｈ3）3基を有する化合物等が挙げられる。In the compound (polymeric substance) represented by the above general formula (I) used in the present invention, n is a repeating unit, and n is an average molecular weight of 10 3 to 10 3 1
0 6 is preferably a number within the range of the (1,000 to 1,000,000). If the molecular weight is less than 10 3, it is difficult to exhibit sufficient properties, while if it exceeds 10 6 , the solubility is reduced, and the viscosity of the electrolyte is excessively increased,
In any case, it is difficult to achieve the object of the present invention. In the present invention, a salt of the compound may be used. The salt comprises, for example, an ammonium salt including a quaternary ammonium salt, or an amine salt. For example, COO in the formula
The H atom of the H group is substituted and COONH 4 , COON (C
H 3 ) A compound having three groups is exemplified.
【０００６】本発明における当該化合物又はその塩の添
加量は、電解液全体量に対して０．１〜３０重量％の範
囲内であることが好ましい。その添加量が０．１重量％
未満では、充分な特性を発揮し難く、一方、３０重量％
を超えるときには、溶解性が低下し、かつ、電解液の粘
度が過度に上昇して、いずれにしても本発明の目的を達
成し難い。In the present invention, the amount of the compound or a salt thereof is preferably in the range of 0.1 to 30% by weight based on the total amount of the electrolytic solution. 0.1% by weight
If it is less than 30% by weight, it is difficult to exhibit sufficient characteristics.
When the value exceeds, the solubility decreases and the viscosity of the electrolyte solution excessively increases, and in any case, it is difficult to achieve the object of the present invention.
【０００７】本発明の電解液に使用される非水系有機溶
媒としては、例えば、エチレングリコールなどの多価ア
ルコール類、Ｎーメチルホルムアミドなどのアミド類、
ガンマーブチロラクトンなどのラクトン類、およびジエ
チレングリコールモノメチルエーテルなどのエーテル類
が挙げられ、その単独又は2種類以上が使用できる。本
発明の電解液には、さらに、水を添加することが出来
る。Examples of the non-aqueous organic solvent used in the electrolytic solution of the present invention include polyhydric alcohols such as ethylene glycol, amides such as N-methylformamide, and the like.
Lactones such as gamma-butyrolactone and ethers such as diethylene glycol monomethyl ether can be used, and one or more of them can be used. Water can be further added to the electrolytic solution of the present invention.
【０００８】本発明では、非水系有機溶媒にブチルオク
タンニ酸アンモニウムなどの有機酸又は無機酸もしくは
その塩類などの溶質、その他の添加剤を加えた電解液
に、上記化合物又はその塩を添加することができる。In the present invention, the above compound or a salt thereof is added to an electrolytic solution obtained by adding a solute such as an organic acid such as ammonium butyloctanoate or an inorganic acid or a salt thereof, and other additives to a non-aqueous organic solvent. be able to.
【０００９】[0009]
【実施例】以下、本発明を実施例及び比較例に基づいて
説明する。 実施例１ 次の化２の式の化合物を使用し、エチレングリコール
（ＥＧ）を溶媒として、表１の組成に基づき電解液を調
整した。得られた電解液について、火花発生電圧、ｐＨ
値及び粘度を測定した。その結果を表１に示す。The present invention will be described below based on examples and comparative examples. Example 1 An electrolytic solution was prepared based on the composition shown in Table 1 using a compound represented by the following chemical formula 2 and ethylene glycol (EG) as a solvent. Regarding the obtained electrolyte, spark generation voltage, pH
The values and viscosities were measured. Table 1 shows the results.
【００１０】[0010]
【化２】 （但し、ｎは２００〜４００である。）Embedded image (However, n is 200 to 400.)
【００１１】比較例１ 上記化２の式の化合物に代えて、ホウ酸アンモニウムを
使用した以外は、実施例１と同様にして、表１の組成に
基づき電解液を調整し、火花発生電圧、ｐＨ値及び粘度
を測定した。その結果を表１に示す。Comparative Example 1 An electrolyte was prepared based on the composition shown in Table 1 in the same manner as in Example 1 except that ammonium borate was used in place of the compound represented by the above formula. The pH value and the viscosity were measured. Table 1 shows the results.
【００１２】比較例２ 上記化２の式の化合物に代えて、２ーブチルオクタン二
酸アンモニウムを使用した以外は、実施例１と同様にし
て、表１の組成に基づき電解液を調整し、火花発生電
圧、ｐＨ値及び粘度を測定した。その結果を表１に示
す。Comparative Example 2 An electrolytic solution was prepared on the basis of the composition shown in Table 1 in the same manner as in Example 1 except that ammonium 2-butyloctanediate was used in place of the compound of the above formula. The voltage, pH value and viscosity were measured. Table 1 shows the results.
【００１３】[0013]
【表１】 [Table 1]
【００１４】表１から、本発明の電解液は、従来の電解
液に比べ、火花発生電圧を約１００ｖｏｌｔ以上高くす
ることができることが分かった。又、表１から、本発明
の電解液は、従来の電解液に比べ、粘度を約１０倍以上
高くすることができることも分かった。From Table 1, it was found that the electrolytic solution of the present invention can increase the spark generation voltage by about 100 volts or more as compared with the conventional electrolytic solution. Table 1 also shows that the electrolytic solution of the present invention can increase the viscosity about 10 times or more as compared with the conventional electrolytic solution.
【００１５】[0015]
【発明の効果】以上本発明によれば、電解液の火花発生
電圧を高くし、また、その粘凋性から電解液の保持性を
高め、かつ、高温特性の優れたアルミ電解コンデンサを
提供することができた。従って、本発明によれば、従来
技術の有する問題点を解消し、高温時におけるアルミ電
解コンデンサの内圧の上昇を抑制し、火花発生電圧を充
分に高めたアルミ電解コンデンサを提供することによっ
て、広範囲の使用温度に耐え、寿命特性を著しく改良
し、コンデンサの信頼性を向上させることができる。As described above, according to the present invention, there is provided an aluminum electrolytic capacitor which increases the spark generation voltage of an electrolytic solution, enhances the retention of the electrolytic solution due to its viscosity, and has excellent high-temperature characteristics. I was able to. Therefore, according to the present invention, by solving the problems of the prior art, suppressing an increase in the internal pressure of the aluminum electrolytic capacitor at high temperatures, by providing an aluminum electrolytic capacitor with a sufficiently high spark generation voltage, a wide range of , The life characteristics can be remarkably improved, and the reliability of the capacitor can be improved.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 篠原 三千生 埼玉県富士見市水谷東３−11−１ 富山 薬品工業株式会社 志木工場内 (56)参考文献 特開 平３−126210（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H01G 9/035 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Michio Shinohara 3-11-1 Mizutani Higashi, Fujimi-shi, Saitama Toyama Pharmaceutical Co., Ltd. Shiki Plant (56) References JP-A-3-126210 (JP, A) ( 58) Fields surveyed (Int.Cl. 7 , DB name) H01G 9/035
Claims (5)
般式を有する化合物又はその塩を添加することを特徴と
するアルミ電解コンデンサの駆動用電解液。 【化１】 （但し、Ｒ1〜Ｒ4は、水素原子、又は炭素数１〜５のア
ルキル基、ＯＣＨ 3基もしくはＯＣ2Ｈ5基、ｎは繰り返
し単位である。）1. A non-aqueous organic solvent comprising a compound represented by the following chemical formula 1.
Characterized by adding a compound having the general formula or a salt thereof
Electrolyte for driving aluminum electrolytic capacitors. Embedded image(However, R1~ RFourIs a hydrogen atom or an atom having 1 to 5 carbon atoms.
Alkyl group, OCH ThreeGroup or OCTwoHFiveGroup, n is repeated
It is a unit. )
加量が、０．１〜３０重量％の範囲内である、請求項１
に記載のアルミ電解コンデンサの駆動用電解液。2. The compound according to claim 1, wherein the amount of the compound or the salt thereof is in the range of 0.1 to 30% by weight.
An electrolytic solution for driving an aluminum electrolytic capacitor as described in (1).
ニウム塩、アミン塩、もしくは第４級アンモニウム塩で
ある、請求項１に記載のアルミ電解コンデンサの駆動用
電解液。3. The electrolytic solution for driving an aluminum electrolytic capacitor according to claim 1, wherein the salt of the compound according to claim 1 is an ammonium salt, an amine salt or a quaternary ammonium salt.
０3 〜１０6の範囲内である、請求項１に記載のアルミ
電解コンデンサの駆動用電解液。4. The compound according to claim 1, wherein the compound has a molecular weight of 1.
0 3 to 10 6 is in the range of, driving electrolyte for aluminum electrolytic capacitor according to claim 1.
くはその塩類などの溶質を含有する電解液に、請求項１
における化合物又はその塩を添加することを特徴とす
る、請求項１に記載のアルミ電解コンデンサの駆動用電
解液。5. An electrolytic solution containing a solute such as an organic acid or an inorganic acid or a salt thereof in a non-aqueous organic solvent.
The electrolytic solution for driving an aluminum electrolytic capacitor according to claim 1, wherein the compound or salt thereof is added.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33796391A JP3306630B2 (en) | 1991-11-28 | 1991-11-28 | Electrolyte for driving aluminum electrolytic capacitors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33796391A JP3306630B2 (en) | 1991-11-28 | 1991-11-28 | Electrolyte for driving aluminum electrolytic capacitors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05152167A JPH05152167A (en) | 1993-06-18 |
| JP3306630B2 true JP3306630B2 (en) | 2002-07-24 |
Family
ID=18313643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33796391A Expired - Fee Related JP3306630B2 (en) | 1991-11-28 | 1991-11-28 | Electrolyte for driving aluminum electrolytic capacitors |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3306630B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003022939A (en) * | 2001-07-10 | 2003-01-24 | Nichicon Corp | Electrolyte for driving electrolytic capacitor |
| KR100540701B1 (en) * | 2003-04-22 | 2006-01-11 | 엔이씨 도낀 가부시끼가이샤 | Electrochemical cell |
| JP4804063B2 (en) * | 2005-08-02 | 2011-10-26 | 日立エーアイシー株式会社 | Electrolytic solution for electrolytic capacitors |
| JP5929490B2 (en) * | 2012-05-11 | 2016-06-08 | 住友化学株式会社 | Resin composition, separator for non-aqueous electrolyte secondary battery and method for producing the same, and non-aqueous electrolyte secondary battery |
| JP5998622B2 (en) * | 2012-05-11 | 2016-09-28 | 住友化学株式会社 | Resin composition, separator for non-aqueous electrolyte secondary battery and method for producing the same, and non-aqueous electrolyte secondary battery |
-
1991
- 1991-11-28 JP JP33796391A patent/JP3306630B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05152167A (en) | 1993-06-18 |
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