JPS63100709A - Driving electrolyte for electrolytic capacitor - Google Patents
Driving electrolyte for electrolytic capacitorInfo
- Publication number
- JPS63100709A JPS63100709A JP24588686A JP24588686A JPS63100709A JP S63100709 A JPS63100709 A JP S63100709A JP 24588686 A JP24588686 A JP 24588686A JP 24588686 A JP24588686 A JP 24588686A JP S63100709 A JPS63100709 A JP S63100709A
- Authority
- JP
- Japan
- Prior art keywords
- electrolytic solution
- solvent
- electrolytic capacitor
- corrosion
- 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.)
- Pending
Links
- 239000003990 capacitor Substances 0.000 title claims description 17
- 239000003792 electrolyte Substances 0.000 title description 8
- 239000008151 electrolyte solution Substances 0.000 claims description 14
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 12
- 239000002904 solvent Substances 0.000 claims description 12
- -1 ester compound Chemical class 0.000 claims description 7
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 4
- 239000004327 boric acid Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 230000007797 corrosion Effects 0.000 description 10
- 238000005260 corrosion Methods 0.000 description 10
- 230000006866 deterioration Effects 0.000 description 9
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 4
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 4
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 4
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 150000003863 ammonium salts Chemical class 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 2
- 239000005711 Benzoic acid Substances 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical class OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 239000001361 adipic acid Substances 0.000 description 2
- 235000011037 adipic acid Nutrition 0.000 description 2
- 235000010233 benzoic acid Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 235000019253 formic acid Nutrition 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- BDJRBEYXGGNYIS-UHFFFAOYSA-N nonanedioic acid Chemical class OC(=O)CCCCCCCC(O)=O BDJRBEYXGGNYIS-UHFFFAOYSA-N 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- 235000005985 organic acids Nutrition 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 1
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Chemical class OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- IZJSTXINDUKPRP-UHFFFAOYSA-N aluminum lead Chemical compound [Al].[Pb] IZJSTXINDUKPRP-UHFFFAOYSA-N 0.000 description 1
- 229910052810 boron oxide Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 210000004709 eyebrow Anatomy 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical class OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229940100890 silver compound Drugs 0.000 description 1
- 150000003379 silver compounds Chemical class 0.000 description 1
- 150000003464 sulfur compounds Chemical class 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Chemical class OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
１（＋ 産業上の利用分野
本発明は電解コンデンサの駆動用電解液（以下電解液と
いう。月：関する。[Detailed Description of the Invention] 1 (+ Industrial Application Field) The present invention relates to an electrolytic solution for driving an electrolytic capacitor (hereinafter referred to as electrolytic solution).
１ｏ１ 従来の技術
従来、電解コンデンサの電解液としては、エチレングリ
コールを主溶媒とし、アジピン酸、ギ酸。1o1 Conventional Technology Conventionally, the electrolyte for electrolytic capacitors uses ethylene glycol as the main solvent, adipic acid, and formic acid.
安息香酸などの有機酸のアンモニウム塩、あるいはアミ
ン塩を溶質とするものが知られている。Some are known that use ammonium salts or amine salts of organic acids such as benzoic acid as solutes.
ところで、電解コンデンサの製造に際し、ハロゲン類、
イオウ化合物その他腐食性不純物がある程度混入するこ
とは免れない。混入した不純物はコンデンサの高温負荷
試験時Ｃ二腐食を発生させ、特性の劣化をもたらす。By the way, when manufacturing electrolytic capacitors, halogens,
It is inevitable that sulfur compounds and other corrosive impurities will be mixed in to some extent. The mixed impurities cause C2 corrosion during high-temperature load tests of capacitors, resulting in deterioration of characteristics.
この腐食；：よる劣化を防止するため１：、特公昭５８
−１５５８号公報のよう１：、銀化合物を添加する方法
も提案されているが、溶媒（二対する溶解度が小さく、
腐食防止の十分な効果は得られない。In order to prevent deterioration caused by this corrosion,
1: A method of adding a silver compound has also been proposed, as in Japanese Patent No. 1558, but it has low solubility in solvents (2),
A sufficient effect of corrosion prevention cannot be obtained.
また、特公昭５Ｂ−６２９８号公報のように、酸化ホウ
素を添加する方法も提案されているが。Furthermore, as in Japanese Patent Publication No. 5B-6298, a method of adding boron oxide has also been proposed.
メチル七ロソルプのようにほとんど溶解しない溶媒が多
く、マた溶解しても電導度の低下や高温負荷試験におけ
る特性の劣化が大きかった。更（：。Many solvents, such as methyl heptarosol, hardly dissolve, and even when they do dissolve, the conductivity decreases and the properties in high-temperature load tests are significantly degraded. Further (:.
ホウ酸を添加する方法もあるが、ホウ酸のエステル比重
：より水が発生し、高温負荷試験での特性の劣化が大き
い。There is also a method of adding boric acid, but the ester specific gravity of boric acid generates more water and the characteristics deteriorate significantly in high-temperature load tests.
（ハ）発明が解決しようとする問題点
従来の電解液では、高温負荷中に腐食が発生し、高温負
荷でのコンデンサ特性の劣化が大きいなどの問題があっ
た。(c) Problems to be Solved by the Invention Conventional electrolytes have problems such as corrosion occurring during high-temperature loads and significant deterioration of capacitor characteristics under high-temperature loads.
本発明は、この様な腐食を防止し、更１ニコンデンサ特
性の劣化も少ない電解液を提供するものである。The present invention provides an electrolytic solution that prevents such corrosion and also causes less deterioration of capacitor characteristics.
！−１−１問題点を解決するための手段本発明は、溶質
と溶媒からなる電解液（−、ホウ酸とエチレングリコー
ルを混合し加熱脱水固化したエステル化合物（以下、Ｂ
ＥＣ）という。）を添加したことを特徴とする。! -1-1 Means for Solving Problems The present invention uses an electrolytic solution (-) consisting of a solute and a solvent, and an ester compound (hereinafter referred to as B
EC). ) is added.
咋）作 用
ＢＥＧはほとんどの有機溶媒に溶解し、腐食防止剤とし
て働くと共（＝、水の発生もなく高温負荷時のコンデン
サ特性の劣化が防止できる。Function: BEG dissolves in most organic solvents, acts as a corrosion inhibitor, and prevents deterioration of capacitor characteristics during high-temperature loads without generating water.
（へ）実施例
本発明（二於いて、溶媒としては、メチルセロソルブ、
エチルセロソルフ、メチルカルピトール、エチルカルピ
トール、ジメチルホルムアミド、γ−プチルククトン、
Ｎ−メチルピロリドン、エチレングリコール、！たはそ
れらの混合溶媒などが用いられる。(f) Examples of the present invention (2) As the solvent, methyl cellosolve,
Ethyl cellosol, methyl calpitol, ethyl calpitol, dimethyl formamide, γ-butyl cuctone,
N-methylpyrrolidone, ethylene glycol,! or a mixed solvent thereof.
本発明（二於いて、溶質としてはアジピン酸、ギ酸、安
息香酸などの有機酸のアンモニウム塩やアミン塩、ある
いはホク酸、マレイン酸、アゼライン酸等の各アンモニ
ウム塩やアミン塩が用いられる。In the present invention (2), ammonium salts and amine salts of organic acids such as adipic acid, formic acid, and benzoic acid, and ammonium salts and amine salts of phosphoric acid, maleic acid, and azelaic acid are used as solutes.
本発明は上述した溶質および溶媒からなる電解液：二、
ホウ酸とエチレングリコールを混合し加熱脱水固化した
ＢＥＧを添加し、溶解するものである。The present invention provides an electrolytic solution comprising the above-mentioned solute and solvent: 2.
BEG, which is obtained by mixing boric acid and ethylene glycol and solidifying it by heating and dehydrating, is added and dissolved.
このＢＥＧの添加量は、実用的Ｃは溶媒１００ｍ１！に
対して３１以上２０１１以下である。The amount of BEG added is practically 100ml of solvent! 31 or more and 2011 or less.
以下１本発明を具体的な実施例に於て、更（＝詳述する
。＠１表に本発明の典型的実施例としての４種類の電解
液［Ｂｌ〜（Ｄｌおよびに）と比較のための従来の電解
液囚（Ｅｌを示す。Below, the present invention will be further explained in detail in specific examples.@1 Table shows four types of electrolytes [Bl to (Dl and Ni) and comparative examples] as typical examples of the present invention. A conventional electrolyte container (El is shown) for
第１表
第２表は、上記各電解液ＩＡＩ〜（Ｆｌを夫々定格４０
ｏｖ、ｔｏｏμＦの素子に含浸してなるアルミニクム電
解コンデンサを１０５℃の高温雰囲気中で０．６人のリ
ップル電流を重畳して高温負荷試験を行った結果を示す
。Table 1 and Table 2 show each of the above electrolytes IAI~(Fl) with a rating of 40
The results of a high-temperature load test are shown in which an aluminum electrolytic capacitor impregnated with an ov, too μF element was subjected to a ripple current of 0.6 people in a high-temperature atmosphere of 105°C.
尚、試料コンデンサの構造は１周知の構造であり、化成
したエツチドアルミニクム箔と陰へ箔をセパレータ紙を
介して巻回したコンデンサ素子（ユ電解液を含浸し、こ
の素子をアルミニウムケースに収納し、ゴム貼積眉板に
て封口したものである。The structure of the sample capacitor is a well-known structure, consisting of a capacitor element (impregnated with an electrolyte and placed in an aluminum case) consisting of chemically etched aluminum foil and foil wrapped around a separator paper. It was stored and sealed with a rubberized eyebrow board.
第 ２ 表 １０５℃高温負荷 ここでＬＯは漏れ電流、Δｃ／ａは容量変化率を示す。Table 2 105℃ high temperature load Here, LO represents a leakage current, and Δc/a represents a capacitance change rate.
第２表から明らかなよう＋：、１０５℃の０．６ Ａの
リップル電流を加えたコンデンサの高温負荷試験におい
て、従来の電解液内および（Ｅ）では腐食が発生すると
共に、特性の劣化も著しい。As is clear from Table 2, in a high-temperature load test of a capacitor with a ripple current of 0.6 A at 105°C, corrosion occurred in the conventional electrolyte and (E), and the characteristics also deteriorated. Significant.
尚、腐食とは、コンデンサ素子より封口部に至るアルミ
リード部分の腐食をいう。Note that corrosion refers to corrosion of the aluminum lead portion extending from the capacitor element to the sealing portion.
一方１本発明Ｉ：係る電解液（：おいては、溶媒１００
ｊｌ：、対して、ＢＥＧｔ−５１以上添加しりｔＯＩＣ
Ｄ）［Ｆ］の電解液では、１ｏｏｏ時間経過後も腐食な
どの異常もなく、特性の劣化も小さい。On the other hand, 1 Invention I: The electrolytic solution (: in which the solvent is 100%
jl:, for BEGt-51 or more added tOIC
D) With the electrolytic solution [F], there was no abnormality such as corrosion even after 100 hours had passed, and the deterioration of characteristics was small.
ただ溶媒１０ＣＩ：ｍｌ二対してＢ１１ｅ（）を２１添
加した電解液（Ｂ）においては、１０００時間経過後Ｃ
二若干の腐食がみられたが従来の電解液Ｃ：比しては改
善されており、また特性の劣化も小さい。However, in the electrolyte solution (B) in which 21 parts of B11e () was added to 10 CI: ml of solvent, after 1000 hours, C
2. Although some corrosion was observed, it was improved compared to conventional electrolytic solution C, and the deterioration of characteristics was also small.
而して、ＢＥＧの添加量は溶媒１００−に対して３１１
以上であることが好ましい。またＢＥＧの添加量が２０
Ｉｉを越えると、腐食防止効果はあるものの、電解液の
比抵抗の増加によるｔａｎδが大きくなり、高温負荷試
験における特性劣化が大きくなり、好ましくない。Therefore, the amount of BEG added is 311 to 100 of the solvent.
It is preferable that it is above. Also, the amount of BEG added is 20
If it exceeds Ii, although there is a corrosion-preventing effect, tan δ increases due to an increase in the specific resistance of the electrolytic solution, and characteristic deterioration in high-temperature load tests increases, which is not preferable.
（ト）発明の詳細
な説明したようＣ二１本発明（二よる電解液は、長期の
高温負荷（一対しても特性の劣化が少ないので、電解コ
ンデンサの長寿命化を図ることができ本発明（二より、
電解コンデンサの性能が飛躍的：：改善される。(G) As described in detail of the invention, the electrolytic solution according to the present invention (2) has little deterioration in characteristics even under long-term high temperature loads, so it is possible to extend the life of electrolytic capacitors. Invention (second part,
The performance of electrolytic capacitors is dramatically improved.
Claims (2)
ングリコールを混合し加熱脱水固化したエステル化合物
を添加したことを特徴とする電解コンデンサの駆動用電
解液。(1) An electrolytic solution for driving an electrolytic capacitor, characterized in that an ester compound obtained by mixing boric acid and ethylene glycol and solidifying the mixture by heating and dehydrating is added to an electrolytic solution consisting of a solvent and a solute.
対して３ｇ以上２０ｇ以下であることを特徴とする特許
請求の範囲第１項に記載の電解コンデンサの駆動用電解
液。(2) The electrolytic solution for driving an electrolytic capacitor according to claim 1, wherein the amount of the ester compound added is 3 g or more and 20 g or less per 100 ml of the solvent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24588686A JPS63100709A (en) | 1986-10-16 | 1986-10-16 | Driving electrolyte for electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24588686A JPS63100709A (en) | 1986-10-16 | 1986-10-16 | Driving electrolyte for electrolytic capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63100709A true JPS63100709A (en) | 1988-05-02 |
Family
ID=17140268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24588686A Pending JPS63100709A (en) | 1986-10-16 | 1986-10-16 | Driving electrolyte for electrolytic capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63100709A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6338806B1 (en) * | 1998-08-31 | 2002-01-15 | Matsushita Electric Industrial Co., Ltd. | Electrolytic capacitor and driving electrolyte thereof |
-
1986
- 1986-10-16 JP JP24588686A patent/JPS63100709A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6338806B1 (en) * | 1998-08-31 | 2002-01-15 | Matsushita Electric Industrial Co., Ltd. | Electrolytic capacitor and driving electrolyte thereof |
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