JPS62261116A - New electrolytic capacitor - Google Patents
New electrolytic capacitorInfo
- Publication number
- JPS62261116A JPS62261116A JP10392786A JP10392786A JPS62261116A JP S62261116 A JPS62261116 A JP S62261116A JP 10392786 A JP10392786 A JP 10392786A JP 10392786 A JP10392786 A JP 10392786A JP S62261116 A JPS62261116 A JP S62261116A
- Authority
- JP
- Japan
- Prior art keywords
- electrolytic capacitor
- acid
- electrolyte
- present
- salts
- 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 19
- 239000002253 acid Substances 0.000 claims description 15
- 239000003792 electrolyte Substances 0.000 claims description 14
- 150000003839 salts Chemical class 0.000 claims description 9
- 239000002798 polar solvent Substances 0.000 claims description 5
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 9
- 239000008151 electrolyte solution Substances 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 150000007513 acids Chemical class 0.000 description 4
- 150000003863 ammonium salts Chemical class 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-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
- -1 amine salts Chemical class 0.000 description 3
- 239000011888 foil Substances 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
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 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
- 239000003495 polar organic solvent Substances 0.000 description 2
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 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 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 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 Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001346 alkyl aryl ethers Chemical class 0.000 description 1
- 150000001408 amides Chemical class 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
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 150000001983 dialkylethers Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 150000002334 glycols Chemical class 0.000 description 1
- 150000002596 lactones Chemical class 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 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
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 229960004889 salicylic acid Drugs 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 150000003464 sulfur compounds Chemical class 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- PBYZMCDFOULPGH-UHFFFAOYSA-N tungstate Chemical class [O-][W]([O-])(=O)=O PBYZMCDFOULPGH-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Inorganic Insulating Materials (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.
アルミニウム等の弁作用全屈の箔をセパレータとともに
巻回した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
ム等の金層ケースや合成樹脂製のケースにコンデンサ素
子を収納され密閉した構造を有する。Generally, electrolytic capacitors have a capacitor element made of a valve-acting fully bent foil such as aluminum wrapped together with a separator, and the capacitor element is impregnated with a driving electrolyte, and the capacitor element is placed in a gold-layer case made of aluminum or a synthetic resin case. It has a sealed structure.
［従来の技術］
従来、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。（特
公昭５８−１３０１９号公報等参照）
しかし゛ながら、上記電解液は一般に高温負荷試験（例
えば、１２５℃での試験）での ｔａｎδの変化が大き
く、高温安定性に欠けるという欠点があった。[Prior Art] Conventionally, the driving electrolytic solution for an electrolytic capacitor is an electrolytic solution that uses ethylene glycol as the main solvent and dissolves therein as an electrolyte a salt that does not corrode metal electrodes, such as an ammonium salt of an organic acid. is commonly used. (Refer to Japanese Patent Publication No. 58-13019, etc.) However, the above-mentioned electrolytic solution generally has the disadvantage that tan δ changes greatly in high-temperature load tests (for example, tests at 125°C) and lacks high-temperature stability. .
［発明の解決しようとする問題点］
本発明は、前述の欠点を解消し、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 provide an electrolytic capacitor with 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１本発
明は、メタタングステン酸、パラタングステン酸又はそ
の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-mentioned objects.1 The present invention provides a driving method comprising an organic polar solvent in which metatungstic acid, paratungstic acid, or a salt thereof is dissolved. The present invention provides an electrolytic capacitor characterized in that an electrolytic solution is used.
駆動用電解液に含まれるメタタングステンる。これらの
例としては、パラタングステン酸としては、パラタング
ステン酸（１２ＷＯ３・５Ｈ２０）又はメタタングステ
ン酸（Ｈ２ＷｕＯａｏ −ｎ）！２０ 、 ｎ ＝２０
〜４０）が挙げられるが、溶解度の大きさからしてメタ
タングステン酸が好ましい、また、これらタングステン
酸は、溶解度の点から好ましくは塩の形態で用いられる
。これらの墳としては、好ましくはアンモニウム塩又は
第四アンモニウム塩、アミン塩又はアルカリ金属塩等が
例示される。なかでも、メタタングステン酸のアンモニ
ウム塩（（ＮＨａ）６［Ｈ２Ｗ＋２０４ｏ］・ｎＨ２Ｏ
） 、パラタングステン酸のアンモニウム塩（ｒ （Ｎ
Ｈａ ）２０・１２ＷＯ３・５Ｈ２０）、などが高温安
定性が優れているため特に好ましい。Metatungsten contained in the drive electrolyte. Examples of these include paratungstic acid (12WO3.5H20) or metatungstic acid (H2WuOao -n)! 20, n = 20
-40), but metatungstic acid is preferred from the viewpoint of solubility, and these tungstic acids are preferably used in the form of salts from the viewpoint of solubility. Preferred examples of these mounds include ammonium salts, quaternary ammonium salts, amine salts, and alkali metal salts. Among them, ammonium salt of metatungstic acid ((NHa)6[H2W+204o]・nH2O
), ammonium salt of paratungstic acid (r (N
Ha)20.12WO3.5H20), etc. are particularly preferred because they have excellent high temperature stability.
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、ジア
ノヒドリン、エチレングリコール、エチレングリコール
の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, dimethylsulfoxide, ethylene, dianohydrin, ethylene glycol, and mono- or dialkyl ether of ethylene glycol.
メタ又はパラタングステン酸又はその塩の有機極性溶媒
中における含有量は、種々に選ぶことができるが、これ
らタングステン酸又はその塩の有機極性溶媒中の濃度が
、小さいときには、比抵抗は十分に小さくならず、逆に
あまり大きくとも比抵抗は所定以上には太きくならない
、かくして、これらタングステン酸又はその塩の含有量
（濃度）は、電解液中好ましくは０．５〜７０重量％、
特には１〜４０重量％が適切である。The content of meta- or para-tungstic acid or its salt in the organic polar solvent can be selected variously, but when the concentration of these tungstic acids or its salts in the organic polar solvent is small, the specific resistance is sufficiently small. On the contrary, even if it is too large, the specific resistance will not increase beyond a certain level.Thus, the content (concentration) of these tungstic acids or their salts is preferably 0.5 to 70% by weight in the electrolytic solution.
Particularly suitable is 1 to 40% by weight.
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
くできるので好ましいが、過度に大きくした場合には、
高温におけるコンデンサの内圧を増大させる。かくして
、水の含有量は、好ましくは０．１〜２０重量％、特に
は０．５〜ｌＯ重量％であるのが好ましい。In the present invention, the inclusion of water in the electrolytic solution is not necessarily essential, but it is preferable if the electrolyte contains water because it can further reduce the specific resistance, but if it is made too large,
Increases the internal pressure of the capacitor at high temperatures. The water content is thus preferably between 0.1 and 20% by weight, in particular between 0.5 and 10% by weight.
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１紙等の適宜のスペ
ーサ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 spacer 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、耐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 electrolyte 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 corrosion-resistant metal or synthetic resin, and sealed. made into a structure.
以下に１本発明の好ましい態様を示した具体例により、
更に説明する。The following is a specific example showing a preferred embodiment of the present invention.
I will explain further.
なお１本発明は、上記の説明及び実施例により、制限的
に解釈されるべきでなく、本発明の範囲内で種々の変更
が可能である。例えば、本発明で使用される駆動用電解
液には、タングステン酸塩の場合などは、これらを形成
する物質を別個に添加してもよく、また必要により、本
発明の目的を阻害しない範囲で他の物質、例えば、０−
フタル酸、マレイン酸、蟻酸、アジピン酸又はサリチル
酸等の酸又はそれらの塩を溶解させうることはもちろん
である。Note that the present invention should not be construed as being limited by the above description and examples, and various changes can be made within the scope of the present invention. For example, in the case of tungstate salts, substances that form these may be added separately to the driving electrolyte used in the present invention, and if necessary, within a range that does not impede the purpose of the present invention. Other substances, e.g. 0-
It is of course possible to dissolve acids such as phthalic acid, maleic acid, formic acid, adipic acid or salicylic acid or their salts.
［実施例］
電解コンデンサに関する駆動用電解液として、メタタン
グステン酸アンモニウム１５０ｇヲエチレングリコール
に溶解させた５００ｇの電解液（ｐＨｌｌｉ、ｌ、’
２．５重量％の水を含有）を調製した。[Example] As a driving electrolyte for an electrolytic capacitor, 500 g of an electrolyte (pHlli, l, '
(containing 2.5% by weight water) was prepared.
上記駆動用電解液を使用して、アルミニウムを電極とす
る電解コンデンサ（８３Ｖ 、 ２２０ＩＡＦ ）を製
作し、高温負荷試験（１２５°Ｃ）におけるｔａｎδの
変化を測定した。その結果を比較例とともに下に示す。An electrolytic capacitor (83 V, 220 IAF) with aluminum electrodes was manufactured using the above driving electrolyte, and the change in tan δ was measured in a high temperature load test (125° C.). The results are shown below along with comparative examples.
実施例２
第１表に示される組成の駆動用電解液を調製した。かか
る駆動用電解液を使用して実施例１と同様にして電解コ
ンデンサを製作し、高温負荷試験（１２５℃）における
ｔａｎ δの変化を測定した。Example 2 A driving electrolytic solution having the composition shown in Table 1 was prepared. An electrolytic capacitor was manufactured using this driving electrolyte in the same manner as in Example 1, and the change in tan δ was measured in a high temperature load test (125° C.).
第１表 ［発明の効果］Table 1 [Effect of the invention]
Claims (2)
の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。(1) An electrolytic capacitor characterized in that a driving electrolyte comprising an organic polar solvent in which metatungstic acid, paratungstic acid, or a salt thereof is dissolved is used.
の塩が有機極性溶媒中、１〜６０重量％である特許請求
の範囲（１）の電解コンデンサ。(2) The electrolytic capacitor according to claim (1), wherein metatungstic acid, paratungstic acid, or a salt thereof is contained in an organic polar solvent in an amount of 1 to 60% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10392786A JPS62261116A (en) | 1986-05-08 | 1986-05-08 | New electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10392786A JPS62261116A (en) | 1986-05-08 | 1986-05-08 | New electrolytic capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62261116A true JPS62261116A (en) | 1987-11-13 |
Family
ID=14367062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10392786A Pending JPS62261116A (en) | 1986-05-08 | 1986-05-08 | New electrolytic capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62261116A (en) |
-
1986
- 1986-05-08 JP JP10392786A patent/JPS62261116A/en active Pending
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