JPS62264615A - Electrolytic capacitor - Google Patents
Electrolytic capacitorInfo
- Publication number
- JPS62264615A JPS62264615A JP10776986A JP10776986A JPS62264615A JP S62264615 A JPS62264615 A JP S62264615A JP 10776986 A JP10776986 A JP 10776986A JP 10776986 A JP10776986 A JP 10776986A JP S62264615 A JPS62264615 A JP S62264615A
- Authority
- JP
- Japan
- Prior art keywords
- electrolytic capacitor
- carboxylic acid
- quaternary ammonium
- aromatic carboxylic
- ammonium salt
- 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 21
- 239000003792 electrolyte Substances 0.000 claims description 12
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 claims description 10
- 150000003242 quaternary ammonium salts Chemical class 0.000 claims description 8
- -1 aromatic mono- Chemical class 0.000 claims description 7
- 150000000000 tetracarboxylic acids Chemical class 0.000 claims description 4
- 125000004432 carbon atom Chemical group C* 0.000 claims description 3
- 239000002798 polar solvent Substances 0.000 claims description 3
- 125000000217 alkyl group Chemical group 0.000 claims description 2
- 125000001453 quaternary ammonium group Chemical group 0.000 claims 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 9
- 239000008151 electrolyte solution Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 239000011888 foil Substances 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 125000003118 aryl group Chemical group 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000003495 polar organic solvent Substances 0.000 description 4
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- 125000002843 carboxylic acid group Chemical group 0.000 description 3
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 2
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 2
- ATHHXGZTWNVVOU-UHFFFAOYSA-N N-methylformamide Chemical compound CNC=O ATHHXGZTWNVVOU-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- GCAIEATUVJFSMC-UHFFFAOYSA-N benzene-1,2,3,4-tetracarboxylic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C(C(O)=O)=C1C(O)=O GCAIEATUVJFSMC-UHFFFAOYSA-N 0.000 description 2
- UJMDYLWCYJJYMO-UHFFFAOYSA-N benzene-1,2,3-tricarboxylic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1C(O)=O UJMDYLWCYJJYMO-UHFFFAOYSA-N 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 150000005622 tetraalkylammonium hydroxides Chemical class 0.000 description 2
- GLDQAMYCGOIJDV-UHFFFAOYSA-N 2,3-dihydroxybenzoic acid Chemical compound OC(=O)C1=CC=CC(O)=C1O GLDQAMYCGOIJDV-UHFFFAOYSA-N 0.000 description 1
- WSGYTJNNHPZFKR-UHFFFAOYSA-N 3-hydroxypropanenitrile Chemical compound OCCC#N WSGYTJNNHPZFKR-UHFFFAOYSA-N 0.000 description 1
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- UIAFKZKHHVMJGS-UHFFFAOYSA-N beta-resorcylic acid Natural products OC(=O)C1=CC=C(O)C=C1O UIAFKZKHHVMJGS-UHFFFAOYSA-N 0.000 description 1
- 229930188620 butyrolactone Natural products 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001983 dialkylethers Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002334 glycols Chemical class 0.000 description 1
- 150000002596 lactones Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000002762 monocarboxylic acid derivatives Chemical class 0.000 description 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 1
- FOWDZVNRQHPXDO-UHFFFAOYSA-N propyl hydrogen carbonate Chemical compound CCCOC(O)=O FOWDZVNRQHPXDO-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229960004889 salicylic acid Drugs 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000012047 saturated solution Substances 0.000 description 1
- 150000003464 sulfur compounds Chemical class 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 230000005068 transpiration Effects 0.000 description 1
- 238000004804 winding Methods 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) [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］
本発明は、新規な駆動用電解液を使用した電解コンデン
サに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electrolytic capacitor using a novel driving electrolyte.
［従来の技術］
アルミニウム等の弁作用金属の箔をセパレータとともに
巻回してコンデンサ素子とした電解コンデンサは、一般
にコンデンサ素子に駆動用電解液を含浸し、アルミニウ
ム等の金属ケースや合成樹脂製のケースにコンデンサ素
子が収納され密閉した構造を有する。[Prior Art] Electrolytic capacitors are made by winding a foil of a valve metal such as aluminum together with a separator to form a capacitor element.Generally, the capacitor element is impregnated with a driving electrolyte, and the capacitor element is impregnated with a driving electrolyte, and a metal case such as aluminum or a case made of synthetic resin is used. It has a sealed structure in which the capacitor element is housed.
従来、かかる電解コンデンサの駆動用電解液としては、
エチレングリコール等を主溶媒とし、これに電解質とし
て飽和有機酸のアンモニウム塩のように金属からなる電
極を侵食しない塩を溶解した電解液が一般に使用されて
いる。Conventionally, the driving electrolyte for such electrolytic capacitors is
Generally used is an electrolytic solution in which ethylene glycol or the like is used as the main solvent, and a salt that does not corrode metal electrodes, such as an ammonium salt of a saturated organic acid, is dissolved therein as an electrolyte.
（特公昭５８−１３０１９号公報等参照）しかしながら
、上記電解液は電導度が小さく、例えば２５℃の電導度
は高々９．４ｍＳ／ｃｍであった。また電導度を上げる
ために水を１〜３０％加えることが行なわれているが、
この場合陰極箔の腐食や解離したアンモニア（ＮＨ３’
の蒸散のため高温での特性劣化が大きいという欠点があ
った。(Refer to Japanese Patent Publication No. 58-13019, etc.) However, the electrolytic solution has a low conductivity, for example, the conductivity at 25° C. is 9.4 mS/cm at most. Additionally, 1 to 30% water is added to increase the conductivity.
In this case, corrosion of the cathode foil and dissociated ammonia (NH3'
The disadvantage is that the properties deteriorate significantly at high temperatures due to transpiration of .
［発明の解決しようとする問題点コ
本発明は、前述の欠点を解消し、電導度が太く、且つ高
温安定性の優れた電解コンデンサを提供することを目的
とする。[Problems to be Solved by the Invention] An object of the present invention is to eliminate the above-mentioned drawbacks and to provide an electrolytic capacitor that has high conductivity and excellent high-temperature stability.
［問題点を解決するための手段］
本発明は、上記目的を良好に達成するものであり、本発
明は、芳香族カルボン酸の第四アンモニウム塩を溶解せ
しめた有機極性溶媒からなる駆動用電解液が使用された
ことを特徴とする電解コンデンサを提供するものである
。[Means for Solving the Problems] The present invention satisfactorily achieves the above objects. The present invention provides an electrolytic capacitor characterized in that a liquid is used.
駆動用電解液に含まれる芳香族カルボン酸の第四アンモ
ニウム塩を構成する芳香族カルボン酸としては、好まし
くは芳香族のモノ乃至テトラカルボン酸、特にはモノ、
ジ又はテトラカルボン酸が良好に使用される。芳香環は
１個のものが好ましく、また該芳香環に複数のカルボン
酸基を有する場合、カルボン酸基は隣接する位置である
のが好ましい、カルボン酸基は、直接芳香環に接合して
いるものが好ましい、芳香族カルボン酸の好ましい具体
例としては、安１色香酸、フタル酸、サリチル酸、レゾ
ルシル酸、ベンゼントリカルボン酸、ベンゼンテトラカ
ルボン酸などが挙げられる。The aromatic carboxylic acid constituting the quaternary ammonium salt of aromatic carboxylic acid contained in the driving electrolyte is preferably an aromatic mono- to tetracarboxylic acid, particularly a mono- or tetracarboxylic acid.
Di- or tetracarboxylic acids are preferably used. The number of aromatic rings is preferably one, and when the aromatic ring has a plurality of carboxylic acid groups, it is preferable that the carboxylic acid groups are at adjacent positions, and the carboxylic acid groups are directly bonded to the aromatic ring. Preferred specific examples of aromatic carboxylic acids include aromatic acid, phthalic acid, salicylic acid, resorcylic acid, benzenetricarboxylic acid, benzenetetracarboxylic acid, and the like.
これら、芳香族カルボン酸は第四アンモニウム塩である
ことが本発明では必須であり、これ以外のアミン塩、ア
ルカリ金属塩の場合は、電解液の電導度が著しく低下し
てしましい、好ましくない。第四アンモニウム塩として
、好ましくは一般式Ｒ４Ｎ−で示されるが、この場合、
Ｒは、芳香族置換基をもつことがあるアルキル基であり
、その炭素数は好ましくは１〜１０、特に１〜３のもの
が好ましい。In the present invention, it is essential that these aromatic carboxylic acids be quaternary ammonium salts; other amine salts or alkali metal salts are undesirable as they will significantly reduce the conductivity of the electrolytic solution. . The quaternary ammonium salt is preferably represented by the general formula R4N-, in which case,
R is an alkyl group that may have an aromatic substituent, and preferably has 1 to 10 carbon atoms, particularly 1 to 3 carbon atoms.
上記極性有機溶媒としては、電解コンデンサに通常使用
される極性有機溶媒であればいずれも使用できる。好ま
しい溶媒としては、アミド類、ラクトン類、グリコール
類、硫黄化合物類又は炭酸塩類が使用できる。好ましい
具体例としては、炭酸プロピル、ジメチルホルムアミド
、Ｎ−メチルホルムアミド、ブチロラクトン、Ｎ−メチ
ルピロリドン、ジメチルスルホキシド、エチレンシアノ
ヒドリン、エチレングリコール、エチレングリコールモ
ノ又はジアルキルエーテル等が使用できる。As the polar organic solvent, any polar organic solvent commonly used in electrolytic capacitors can be used. As preferred solvents, amides, lactones, glycols, sulfur compounds or carbonates can be used. Preferred specific examples include propyl carbonate, dimethylformamide, N-methylformamide, butyrolactone, N-methylpyrrolidone, dimethyl sulfoxide, ethylene cyanohydrin, ethylene glycol, ethylene glycol mono- or dialkyl ether, and the like.
カルボン酸第四アンモニウム塩の極性有機溶媒中におけ
る含有量は、種々に選ぶことができるが、飽和溶液の状
態が最も比抵抗が小さい。Although the content of the carboxylic acid quaternary ammonium salt in the polar organic solvent can be selected variously, the resistivity is the lowest in the state of a saturated solution.
かくして芳香族カルボン酸第四アンモニウム塩の含有量
（濃度）は、電解液中好ましくは１〜５０重量％、特に
は５〜４０重量％が適切である。Thus, the content (concentration) of the aromatic carboxylic acid quaternary ammonium salt in the electrolytic solution is preferably 1 to 50% by weight, particularly 5 to 40% by weight.
本発明で芳香族カルボン酸の第四アンモニウム塩を含む
駆動用電解液を得る場合、上記第四アンモニウム塩を有
機極性溶媒に添加することもできるが、溶媒中で、該第
四アンモニウム塩を形成する原料物質、例えば、芳香族
カルボン酸又はその無水物と、テトラアルキルアンモニ
ウムハイドロキサイドとを別個に溶媒に加えて、溶媒中
で形成することができる。When obtaining a driving electrolyte containing a quaternary ammonium salt of an aromatic carboxylic acid in the present invention, the quaternary ammonium salt can be added to an organic polar solvent, but the quaternary ammonium salt is formed in the solvent. It can be formed in a solvent by separately adding raw materials such as aromatic carboxylic acid or its anhydride and tetraalkylammonium hydroxide to the solvent.
本発明において、電解液中の水の含有は必ずしも必須で
はないが、水が含有された場合には、比抵抗を更に小さ
くできるため好ましい。In the present invention, water is not necessarily required to be contained in the electrolytic solution, but it is preferable if water is contained because the specific resistance can be further reduced.
しかし、水の含有量を過度に多くした場合には、ケース
の膨れ、電極箔の腐食を増大させるので、水の含有量は
、電解液中好ましくは０．１〜２０重量％、特には０．
５〜１５重量％が好ましい。。However, if the water content is excessively increased, it increases the swelling of the case and the corrosion of the electrode foil, so the water content in the electrolyte is preferably 0.1 to 20% by weight, especially 0 ．．
5 to 15% by weight is preferred. .
本発明の電解コンデンサには、種々の態様のコンデンサ
が包含される。典型的態様としては、紙等の適宜のセパ
レータで分離したアルミニウム箔陽極とアルミニウム箔
陰極とを使用し、これらを円筒状に巻いたものをコンデ
ンサ素子とし、この素子に駆動用電解液を含浸させる。The electrolytic capacitor of the present invention includes various types of capacitors. In a typical embodiment, an aluminum foil anode and an aluminum foil cathode separated by a suitable separator such as paper are used, these are wound into a cylindrical shape to form a capacitor element, and this element is impregnated with a driving electrolyte. .
電解液の含浸量としてはセパレータに対して、好ましく
は５０〜３００重量％とされる。電解液が含浸された素
子は、＃食性を有する金属や合成樹脂等のケースに収納
し、密封した構造にされる。The amount of electrolytic solution impregnated is preferably 50 to 300% by weight based on the separator. The element impregnated with the electrolyte is housed in a case made of corrosive metal, synthetic resin, or the like, and sealed.
以下１本発明の実施例について説明する。An embodiment of the present invention will be described below.
［実施例］
各実施例は、水酸化テトラアルキルアンモニラム水溶液
（１０％水溶液）と芳香族カルボン酸を等当量で混合溶
解させたものをエバポレーターにより水を除いてゲル状
の塩とし、これを溶質として極性有機溶媒に溶解させ、
必要ならば、使用した芳香族カルボン酸を加えることで
ｐＨを調整し、電解液とした。[Example] In each example, an aqueous solution of tetraalkyl ammonium hydroxide (10% aqueous solution) and an aromatic carboxylic acid were mixed and dissolved in equal amounts, water was removed using an evaporator, and a gel-like salt was obtained. Dissolved in a polar organic solvent as a solute,
If necessary, the pH was adjusted by adding the aromatic carboxylic acid used to prepare an electrolytic solution.
種々調製した電解液を使用してアルミニウムを電極とす
る電解コンデンサ（ＩＯＶ 、 １０００μＦ）を製作
し、高温負荷試験（１２５°Ｃ）におけるｔａｎ δの
変化を測定した。その結果を比較例とともに表１に示す
。表中（）内は重量％を示す。Electrolytic capacitors (IOV, 1000 μF) with aluminum electrodes were fabricated using variously prepared electrolytes, and changes in tan δ were measured during a high temperature load test (125°C). The results are shown in Table 1 along with comparative examples. In the table, the numbers in parentheses indicate weight %.
表１
［発明の効果］
本発明の電解コンデンサは、高温負荷試験（１２５℃）
でのｔａｎ δの変化が小さい高温安定性の優れた電解
コンデンサが得られる。Table 1 [Effects of the invention] The electrolytic capacitor of the present invention was subjected to a high temperature load test (125°C)
An electrolytic capacitor with excellent high-temperature stability and a small change in tan δ can be obtained.
Claims (4)
機極性溶媒からなる駆動用電解液が使用されたことを特
徴とする電解コンデンサ。(1) An electrolytic capacitor characterized in that a driving electrolyte made of an organic polar solvent containing a quaternary ammonium salt of an aromatic carboxylic acid is used.
性溶媒中、１〜８０重量％である特許請求の範囲（１）
の電解コンデンサ。(2) Claim (1) in which the quaternary ammonium salt of aromatic carboxylic acid is 1 to 80% by weight in the organic polar solvent.
electrolytic capacitor.
ルボン酸である特許請求の範囲（１）又は（２）の電解
コンデンサ。(3) The electrolytic capacitor according to claim (1) or (2), wherein the aromatic carboxylic acid is an aromatic mono- or tetracarboxylic acid.
のアルキル基の炭素数が１〜１０である特許請求の範囲
（１）〜（３）のいずれかの電解コンデンサ。(4) The electrolytic capacitor according to any one of claims (1) to (3), wherein the alkyl group of the quaternary ammonium represented by the general formula R_4N^+ has 1 to 10 carbon atoms.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10776986A JPS62264615A (en) | 1986-05-13 | 1986-05-13 | Electrolytic capacitor |
| US07/049,297 US4734821A (en) | 1986-05-13 | 1987-05-13 | Electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10776986A JPS62264615A (en) | 1986-05-13 | 1986-05-13 | Electrolytic capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62264615A true JPS62264615A (en) | 1987-11-17 |
Family
ID=14467540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10776986A Pending JPS62264615A (en) | 1986-05-13 | 1986-05-13 | Electrolytic capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62264615A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01304720A (en) * | 1988-06-01 | 1989-12-08 | Elna Co Ltd | Electrolytic capacitor |
| US5485346A (en) * | 1992-09-29 | 1996-01-16 | Matsushita Electric Industrial Co., Ltd. | Electrolyte for driving electrolytic capacitor and the electrolytic capacitor |
| US6128179A (en) * | 1998-03-23 | 2000-10-03 | Matsushita Electric Industrial Co., Ltd. | Aluminum electrolytic capacitor |
| WO2008013095A1 (en) | 2006-07-27 | 2008-01-31 | Nichicon Corporation | Ionic compound |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS617617A (en) * | 1984-06-21 | 1986-01-14 | エルナ−株式会社 | Electrolyte for driving electrolytic condenser |
| JPS6193610A (en) * | 1984-10-12 | 1986-05-12 | エルナ−株式会社 | Electrolytic liquid for driving electrolytic capacitor |
| JPS62145715A (en) * | 1985-12-20 | 1987-06-29 | 三菱油化株式会社 | Electrolyte for electrolytic capacitor |
-
1986
- 1986-05-13 JP JP10776986A patent/JPS62264615A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS617617A (en) * | 1984-06-21 | 1986-01-14 | エルナ−株式会社 | Electrolyte for driving electrolytic condenser |
| JPS6193610A (en) * | 1984-10-12 | 1986-05-12 | エルナ−株式会社 | Electrolytic liquid for driving electrolytic capacitor |
| JPS62145715A (en) * | 1985-12-20 | 1987-06-29 | 三菱油化株式会社 | Electrolyte for electrolytic capacitor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01304720A (en) * | 1988-06-01 | 1989-12-08 | Elna Co Ltd | Electrolytic capacitor |
| US5485346A (en) * | 1992-09-29 | 1996-01-16 | Matsushita Electric Industrial Co., Ltd. | Electrolyte for driving electrolytic capacitor and the electrolytic capacitor |
| US6128179A (en) * | 1998-03-23 | 2000-10-03 | Matsushita Electric Industrial Co., Ltd. | Aluminum electrolytic capacitor |
| WO2008013095A1 (en) | 2006-07-27 | 2008-01-31 | Nichicon Corporation | Ionic compound |
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