JPS63293911A - Electrolyte for driving aluminum electrolytic capacitor - Google Patents
Electrolyte for driving aluminum electrolytic capacitorInfo
- Publication number
- JPS63293911A JPS63293911A JP13026087A JP13026087A JPS63293911A JP S63293911 A JPS63293911 A JP S63293911A JP 13026087 A JP13026087 A JP 13026087A JP 13026087 A JP13026087 A JP 13026087A JP S63293911 A JPS63293911 A JP S63293911A
- Authority
- JP
- Japan
- Prior art keywords
- mercapto
- additive
- heterocyclic compound
- thiazoles
- electrolytic 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
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 11
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 11
- 239000003990 capacitor Substances 0.000 title claims description 9
- 239000003792 electrolyte Substances 0.000 title abstract description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000654 additive Substances 0.000 claims abstract description 14
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 12
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims abstract description 12
- 230000000996 additive effect Effects 0.000 claims abstract description 12
- 150000002391 heterocyclic compounds Chemical class 0.000 claims abstract description 7
- 150000003557 thiazoles Chemical class 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- LXUNZSDDXMPKLP-UHFFFAOYSA-N 2-Methylbenzenethiol Chemical compound CC1=CC=CC=C1S LXUNZSDDXMPKLP-UHFFFAOYSA-N 0.000 claims abstract description 5
- UIJGNTRUPZPVNG-UHFFFAOYSA-N benzenecarbothioic s-acid Chemical compound SC(=O)C1=CC=CC=C1 UIJGNTRUPZPVNG-UHFFFAOYSA-N 0.000 claims abstract description 5
- 150000007524 organic acids Chemical class 0.000 claims abstract description 5
- HNKJADCVZUBCPG-UHFFFAOYSA-N thioanisole Chemical compound CSC1=CC=CC=C1 HNKJADCVZUBCPG-UHFFFAOYSA-N 0.000 claims abstract description 5
- 150000001408 amides Chemical class 0.000 claims abstract description 4
- 150000002596 lactones Chemical class 0.000 claims abstract description 4
- 239000012046 mixed solvent Substances 0.000 claims abstract description 4
- YHMYGUUIMTVXNW-UHFFFAOYSA-N 1,3-dihydrobenzimidazole-2-thione Chemical class C1=CC=C2NC(S)=NC2=C1 YHMYGUUIMTVXNW-UHFFFAOYSA-N 0.000 claims abstract 2
- RAIPHJJURHTUIC-UHFFFAOYSA-N 1,3-thiazol-2-amine Chemical compound NC1=NC=CS1 RAIPHJJURHTUIC-UHFFFAOYSA-N 0.000 claims abstract 2
- 229950003476 aminothiazole Drugs 0.000 claims abstract 2
- 239000008151 electrolyte solution Substances 0.000 claims description 12
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 9
- OZJPLYNZGCXSJM-UHFFFAOYSA-N 5-valerolactone Chemical compound O=C1CCCCO1 OZJPLYNZGCXSJM-UHFFFAOYSA-N 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- ATHHXGZTWNVVOU-UHFFFAOYSA-N N-methylformamide Chemical compound CNC=O ATHHXGZTWNVVOU-UHFFFAOYSA-N 0.000 claims description 6
- 125000003396 thiol group Chemical group [H]S* 0.000 claims description 4
- 235000019441 ethanol Nutrition 0.000 claims description 3
- 239000000243 solution Substances 0.000 claims description 3
- 150000005846 sugar alcohols Polymers 0.000 claims description 3
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 claims 2
- IOJUPLGTWVMSFF-UHFFFAOYSA-N benzothiazole Chemical compound C1=CC=C2SC=NC2=C1 IOJUPLGTWVMSFF-UHFFFAOYSA-N 0.000 claims 2
- AFBBKYQYNPNMAT-UHFFFAOYSA-N 1h-1,2,4-triazol-1-ium-3-thiolate Chemical compound SC=1N=CNN=1 AFBBKYQYNPNMAT-UHFFFAOYSA-N 0.000 claims 1
- UHGULLIUJBCTEF-UHFFFAOYSA-N 2-aminobenzothiazole Chemical compound C1=CC=C2SC(N)=NC2=C1 UHGULLIUJBCTEF-UHFFFAOYSA-N 0.000 claims 1
- FLFWJIBUZQARMD-UHFFFAOYSA-N 2-mercapto-1,3-benzoxazole Chemical compound C1=CC=C2OC(S)=NC2=C1 FLFWJIBUZQARMD-UHFFFAOYSA-N 0.000 claims 1
- MARYDOMJDFATPK-UHFFFAOYSA-N 3-hydroxy-1h-pyridine-2-thione Chemical compound OC1=CC=CN=C1S MARYDOMJDFATPK-UHFFFAOYSA-N 0.000 claims 1
- OCVLSHAVSIYKLI-UHFFFAOYSA-N 3h-1,3-thiazole-2-thione Chemical compound SC1=NC=CS1 OCVLSHAVSIYKLI-UHFFFAOYSA-N 0.000 claims 1
- FZWLAAWBMGSTSO-UHFFFAOYSA-N Thiazole Chemical compound C1=CSC=N1 FZWLAAWBMGSTSO-UHFFFAOYSA-N 0.000 claims 1
- WHMDPDGBKYUEMW-UHFFFAOYSA-N pyridine-2-thiol Chemical compound SC1=CC=CC=N1 WHMDPDGBKYUEMW-UHFFFAOYSA-N 0.000 claims 1
- HBCQSNAFLVXVAY-UHFFFAOYSA-N pyrimidine-2-thiol Chemical compound SC1=NC=CC=N1 HBCQSNAFLVXVAY-UHFFFAOYSA-N 0.000 claims 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 12
- 229910052802 copper Inorganic materials 0.000 abstract description 12
- 239000010949 copper Substances 0.000 abstract description 12
- 239000011888 foil Substances 0.000 abstract description 5
- PXQLVRUNWNTZOS-UHFFFAOYSA-N sulfanyl Chemical class [SH] PXQLVRUNWNTZOS-UHFFFAOYSA-N 0.000 abstract 3
- 150000001298 alcohols Chemical class 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 239000002904 solvent Substances 0.000 description 3
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- -1 amide [ Chemical class 0.000 description 2
- FLDCSPABIQBYKP-UHFFFAOYSA-N 5-chloro-1,2-dimethylbenzimidazole Chemical compound ClC1=CC=C2N(C)C(C)=NC2=C1 FLDCSPABIQBYKP-UHFFFAOYSA-N 0.000 description 1
- 239000001741 Ammonium adipate Substances 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 235000019293 ammonium adipate Nutrition 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
Landscapes
- Electroplating And Plating Baths Therefor (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明はアルミニウム電解コンデンサの駆動用電解液（
以下電解液という）に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an electrolytic solution for driving an aluminum electrolytic capacitor (
(hereinafter referred to as electrolyte).
従来の技術
従来、電解液としてはエチレングリコールを主体とした
溶媒にアジピン酸またはその塩を溶解した電解液が多用
されている。2. Description of the Related Art Conventionally, an electrolytic solution in which adipic acid or a salt thereof is dissolved in a solvent mainly composed of ethylene glycol has been frequently used.
本発明が解決しようとする問題点
このような有機酸のアンモニウム塩を使用している電解
液では、コンデンサを長期間放置するとアルミニウム電
極箔中に銅が含有している場合には銅が溶解し、さらに
は再析出し、この再析出が著しい場合には電極間の短絡
を起こし、コンデンサの機能が失われる現象が生じる。Problems to be Solved by the Invention With electrolytes that use ammonium salts of organic acids, if a capacitor is left for a long period of time, copper will dissolve if it is contained in the aluminum electrode foil. , and further redeposition, and if this redeposition is significant, a short circuit occurs between the electrodes, causing a phenomenon in which the function of the capacitor is lost.
対策として、電極間距離を確保するため厚いセパレータ
ーの使用等の対策を行ってきたが、電気特性の低下、小
型化への障害となっている。Countermeasures have been taken, such as using thick separators to ensure the distance between electrodes, but these have resulted in a decline in electrical characteristics and become an obstacle to miniaturization.
問題点を解決するための手段
本発明は上述の問題点を解決するため、エチレングリコ
ール、ジエチレングリコール等の多価アルコール類、メ
チルアルコール類、エチルアルコール等のモノアルコー
ル類、ジメチルホルムアミド、モノメチルホルムアミド
等のアミド［、Ｔ−ブチロラクトン、バレロラクトン等
のラクトン類および水のうち、一種あるいは二種以上の
混合溶媒に有機酸を溶解してなる溶液に添加剤として、
０．０１以上のチアゾール類またはメルカプト基を有す
る複素環化合物の少なくとも一種かあるいはチオアニソ
ール、チオクレゾール、チオ安息酸のうち少なくとも一
種を添加することを特徴とするアルミニウム電解コンデ
ンサの駆動用電解液である。Means for Solving the Problems In order to solve the above-mentioned problems, the present invention uses polyhydric alcohols such as ethylene glycol and diethylene glycol, monoalcohols such as methyl alcohol and ethyl alcohol, dimethylformamide, monomethylformamide, etc. As an additive to a solution prepared by dissolving an organic acid in a mixed solvent of one or more of lactones such as amide [, T-butyrolactone, valerolactone, etc.] and water,
An electrolytic solution for driving an aluminum electrolytic capacitor, characterized in that it contains at least one type of heterocyclic compound having 0.01 or more thiazoles or mercapto groups, or at least one type of thioanisole, thiocresol, and thiobenzoic acid. be.
作用
上記の添加剤はアルミニウム電極箔に存在する銅表面に
吸着し、電解液中に溶出する銅の濃度を著しく抑制する
ものである。Function: The above-mentioned additive is adsorbed on the copper surface of the aluminum electrode foil, and significantly suppresses the concentration of copper eluted into the electrolytic solution.
実施例
以下、本発明の実施例を主溶媒のエチレングリコール７
５ｗｔ％に水１５ｗ ｔ％、アジピン酸アンモンｌＱｗ
ｔ％を配合した従来の電解液およびこの電解液に本発明
の各添加剤を第１表に示す添加量を添加した電解液を作
成し、これに銅片を各々浸漬させ、９５℃、１０００時
間に溶出した銅量を調査した。Examples Below, examples of the present invention will be described using ethylene glycol as the main solvent.
5wt% water, 15wt% water, ammonium adipate 1Qw
A conventional electrolytic solution containing t% and an electrolytic solution were prepared by adding each additive of the present invention in the amount shown in Table 1 to this electrolytic solution, and each copper piece was immersed in the electrolytic solution at 95° C. and 1000° C. The amount of copper eluted over time was investigated.
その結果を第１表に示す。The results are shown in Table 1.
なお、銅片（９９，９％）はｌＸ４Ｘ５鶴のサイズのも
のを用い、電解液量は１０１とした。In addition, the copper piece (99.9%) used was one with a size of 1×4×5 cranes, and the amount of electrolyte was 101.
第 １ 表
このように各種添加剤を添加した電解液は、いずれの添
加剤も銅の溶出を抑制する効果が確認された。Table 1 In the electrolytic solution to which various additives were added as described above, it was confirmed that all of the additives were effective in suppressing the elution of copper.
さらに、銅を１％含有するアルミニウム箔を陰極として
、前述の電解液を用いて１６ｗｖ２２０μＦの・コンデ
ンサを製作し、９５℃、５００時間の無負荷試験を実施
した。その結果をショートの発生個数として確認した結
果を第１表に示した。Furthermore, a 16 wv 220 μF capacitor was manufactured using the above electrolyte and an aluminum foil containing 1% copper was used as a cathode, and a no-load test was conducted at 95° C. for 500 hours. The results were confirmed as the number of short circuits, and the results are shown in Table 1.
上記のように本発明の添加剤は銅の溶解、再析出による
電極間のショートを防止する効果をも有することが確認
できた。 ゛
また溶媒の種類、配合比および有機酸塩の種類、濃度を
かえてくり返し試験したが、いずれの条件においても上
述の添加剤の効果が確認された。As described above, it was confirmed that the additive of the present invention also has the effect of preventing short circuits between electrodes due to dissolution and redeposition of copper. ``Also, the test was repeated by changing the type and blending ratio of the solvent and the type and concentration of the organic acid salt, and the effect of the above-mentioned additive was confirmed under all conditions.
なお、添加剤は０．０１％未満では効果が十分ではなく
、また飽和濃度を超える量では好ましくない。It should be noted that if the additive is less than 0.01%, the effect will not be sufficient, and if the amount exceeds the saturation concentration, it is not preferable.
特に添加剤の量は０．０１ｗ ｔ％〜Ｑ、５ｗ ｔ％が
最適である。In particular, the optimum amount of the additive is 0.01wt% to Q, 5wt%.
発明の効果
以上の結果から明らかなように、エチレングリコール、
ジエチレングリコール等の多価アルコール類、メチルア
ルコール、エチルアルコール等のモノアルコール類、ジ
メチルホルムアミド、モノメチルホルムアミド等のアミ
ド類、Ｔ−ブチロラクトン、バレロラクトン等のラクト
ン類および水のうち、一種あるいは二種以上の混合溶媒
に有機酸を溶解してなる溶液に添加剤として０．０１Ｗ
ｔ％以上のチアゾール類またはメルカプト基を有する
複素環化合物の少なくとも一種かあるいはチオアニソー
ル、チオクレゾール、チオ安息酸のうち少なくとも一種
を添加することを特徴とするアルミニウム電解コンデン
サの駆動用電解液は、アルミニウム電極箔中に銅が含有
している場合においても、電気特性の低下、小型化への
障害となることなしに、電極間の短絡、ショートを防止
でき、工業的ならびに実用的価値の大なるものである。As is clear from the results beyond the effects of the invention, ethylene glycol,
One or more of polyhydric alcohols such as diethylene glycol, monoalcohols such as methyl alcohol and ethyl alcohol, amides such as dimethylformamide and monomethylformamide, lactones such as T-butyrolactone and valerolactone, and water. Add 0.01W as an additive to a solution of an organic acid dissolved in a mixed solvent.
An electrolytic solution for driving an aluminum electrolytic capacitor is characterized in that at least one of thiazoles or a heterocyclic compound having a mercapto group or at least one of thioanisole, thiocresol, and thiobenzoic acid is added in an amount of t% or more, Even if copper is contained in the aluminum electrode foil, it can prevent short circuits between electrodes without degrading electrical properties or hindering miniaturization, and has great industrial and practical value. It is something.
Claims (3)
多価アルコール類、メチルアルコール、エチルアルコー
ル等のモノアルコール類、ジメチルホルムアミド、モノ
メチルホルムアミド等のアミド類、γ−ブチロラクトン
、バレロラクトン等のラクトン類および水のうち、一種
あるいは二種以上の混合溶媒に有機酸を溶解してなる溶
液に添加剤と、して０．０１ｗｔ％以上のチアゾール類
またはメルカプト基を有する複素環化合物の少なくとも
一種かあるいはチオアニソール、チオクレゾール、チオ
安息酸のうち少なくとも一種を添加することを特徴とす
るアルミニウム電解コンデンサの駆動用電解液。(1) Among polyhydric alcohols such as ethylene glycol and diethylene glycol, monoalcohols such as methyl alcohol and ethyl alcohol, amides such as dimethylformamide and monomethylformamide, lactones such as γ-butyrolactone and valerolactone, and water, An additive is added to a solution prepared by dissolving an organic acid in one or more mixed solvents, and 0.01 wt% or more of thiazoles or at least one heterocyclic compound having a mercapto group, thioanisole, thiocresol, etc. An electrolytic solution for driving an aluminum electrolytic capacitor, characterized in that it contains at least one kind of thiobenzoic acid.
アゾール、アミノベンゾチアゾールからなることを特徴
とする特許請求の範囲第１項記載のアルミニウム電解コ
ンデンサの駆動用電解液。(2) The electrolytic solution for driving an aluminum electrolytic capacitor according to claim 1, wherein the thiazole is composed of aminothiazole, benzothiazole, or aminobenzothiazole.
ルカプトベンゾイミダゾール、２−メルカプトベンゾオ
キサゾール、２−メルカプトピリジン、２−メルカプト
−３−ピリジノール、２−メルカプトピリミジン、２−
メルカプトチアゾール、３−メルカプト−１Ｈ−１，２
，４−トリアゾールからなることを特徴とする特許請求
の範囲第１項記載のアルミニウム電解コンデンサの駆動
用電解液。(3) The above-mentioned heterocyclic compound having a mercapto group is 2-mercaptobenzimidazole, 2-mercaptobenzoxazole, 2-mercaptopyridine, 2-mercapto-3-pyridinol, 2-mercaptopyrimidine, 2-
Mercaptothiazole, 3-mercapto-1H-1,2
, 4-triazole, as set forth in claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13026087A JPS63293911A (en) | 1987-05-27 | 1987-05-27 | Electrolyte for driving aluminum electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13026087A JPS63293911A (en) | 1987-05-27 | 1987-05-27 | Electrolyte for driving aluminum electrolytic capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63293911A true JPS63293911A (en) | 1988-11-30 |
Family
ID=15030011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13026087A Pending JPS63293911A (en) | 1987-05-27 | 1987-05-27 | Electrolyte for driving aluminum electrolytic capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63293911A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5563230A (en) * | 1994-09-09 | 1996-10-08 | National Science Council | Chiral smectic liquid crystalline polymers |
| JP2006332279A (en) * | 2005-05-25 | 2006-12-07 | Nichicon Corp | Electrolyte for driving electrolytic capacitor, and electrolytic capacitor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61166122A (en) * | 1985-01-18 | 1986-07-26 | 松下電器産業株式会社 | Electrolytic liquid for aluminum electrolytic capacitor |
| JPS62114206A (en) * | 1985-11-14 | 1987-05-26 | 旭硝子株式会社 | Electrolyte for electrolytic capacitor |
-
1987
- 1987-05-27 JP JP13026087A patent/JPS63293911A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61166122A (en) * | 1985-01-18 | 1986-07-26 | 松下電器産業株式会社 | Electrolytic liquid for aluminum electrolytic capacitor |
| JPS62114206A (en) * | 1985-11-14 | 1987-05-26 | 旭硝子株式会社 | Electrolyte for electrolytic capacitor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5563230A (en) * | 1994-09-09 | 1996-10-08 | National Science Council | Chiral smectic liquid crystalline polymers |
| JP2006332279A (en) * | 2005-05-25 | 2006-12-07 | Nichicon Corp | Electrolyte for driving electrolytic capacitor, and electrolytic capacitor |
| JP4555154B2 (en) * | 2005-05-25 | 2010-09-29 | ニチコン株式会社 | Electrolytic solution for electrolytic capacitor and electrolytic capacitor |
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