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JPH0682593B2 - Method for manufacturing solid electrolytic capacitor - Google Patents
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JPH0682593B2 - Method for manufacturing solid electrolytic capacitor - Google Patents

Method for manufacturing solid electrolytic capacitor

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Publication number
JPH0682593B2
JPH0682593B2 JP21093088A JP21093088A JPH0682593B2 JP H0682593 B2 JPH0682593 B2 JP H0682593B2 JP 21093088 A JP21093088 A JP 21093088A JP 21093088 A JP21093088 A JP 21093088A JP H0682593 B2 JPH0682593 B2 JP H0682593B2
Authority
JP
Japan
Prior art keywords
acid
electrolytic capacitor
salt
solid electrolytic
cathode
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
Application number
JP21093088A
Other languages
Japanese (ja)
Other versions
JPH0258817A (en
Inventor
敦子 金子
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Chemi Con Corp
Original Assignee
Nippon Chemi Con Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Chemi Con Corp filed Critical Nippon Chemi Con Corp
Priority to JP21093088A priority Critical patent/JPH0682593B2/en
Publication of JPH0258817A publication Critical patent/JPH0258817A/en
Publication of JPH0682593B2 publication Critical patent/JPH0682593B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、誘電体金属酸化物皮膜上に電解重合により固
体電解質のポリマー膜が形成された固体電解コンデンサ
の製造方法に関する。
Description: TECHNICAL FIELD The present invention relates to a method for producing a solid electrolytic capacitor in which a polymer film of a solid electrolyte is formed on a dielectric metal oxide film by electrolytic polymerization.

(従来の技術及び発明が解決しようとする問題点) 従来、固体電解コンデンサとして、アルミニウム、タン
タル等の金属を陽極体とし、その陽極体表面を酸化して
形成した酸化金属皮膜上にピロール、チオフエン等の重
合体を電解重合により、ポリマー膜を形成したものが知
られている。
(Problems to be Solved by Related Art and Invention) Conventionally, as a solid electrolytic capacitor, a metal such as aluminum or tantalum is used as an anode body, and a pyrrole or thiophene is formed on a metal oxide film formed by oxidizing the surface of the anode body. It is known that a polymer film is formed by electrolytically polymerizing such polymers.

その場合、電解重合時の電解液中の支持塩としては、シ
ュウ酸、アジピン酸、ボロジサリチル酸アンモニウム塩
等、化成性のあるものを使用していたが、生成する重合
膜の電導度は十分高いとは言えず、また熱安定性の点で
も問題を有しており、ライフ中の劣下も著しかった。
In that case, as the supporting salt in the electrolytic solution at the time of electrolytic polymerization, oxalic acid, adipic acid, ammonium salts of borodisalicylic acid, etc. were used, but those having a chemical conversion property were used, but the conductivity of the resulting polymerized film was sufficient. It was not high, and it also had a problem in terms of thermal stability.

(問題点を解決するための手段) 本発明は、かかる問題点を解決するためになされたもの
であり、固体電解コンデンサの製造の誘電体金属酸化物
皮膜上に、電解重合により固体電解質のポリマー膜を形
成する工程において、支持塩としてのボロジサリチル酸
の塩、及び芳香族スルホン酸又はその塩を添加すること
により、熱安定性の高い重合膜、そして優れた電気的特
性を有する固体電解コンデンサが得られることを見出だ
し、本発明に到達したものである。
(Means for Solving Problems) The present invention has been made to solve the above problems, and a polymer of a solid electrolyte is formed by electrolytic polymerization on a dielectric metal oxide film in the production of a solid electrolytic capacitor. By adding a salt of borodisalicylic acid as a supporting salt and an aromatic sulfonic acid or a salt thereof in the step of forming a film, a polymer film having high thermal stability, and a solid electrolytic capacitor having excellent electrical characteristics The present invention has been achieved and the present invention has been achieved.

本発明において使用される芳香族スルホン酸としては、
ベンゼンスルホン酸、置換ベンゼンスルホン酸、例えば
p−トルエンスルホン酸、ドデシルベンゼンスルホン酸
等、ナフタレンスルホン酸、置換ナフタレンスルホン酸
等、芳香族化合物にスルホン酸が置換したものが挙げら
れる。
As the aromatic sulfonic acid used in the present invention,
Examples thereof include benzenesulfonic acid and substituted benzenesulfonic acids, for example, p-toluenesulfonic acid, dodecylbenzenesulfonic acid, naphthalenesulfonic acid, substituted naphthalenesulfonic acid and the like, and aromatic compounds substituted with sulfonic acid.

また、電解重合により形成される固体電解質のポリマー
膜を構成する電導性高分子化合物としては、ポリアセチ
レン、ポリピロール、ポリチオフエン、ポリシアノアセ
チレン、ポリイソチアナフテン、ポリジアセチレン、ポ
リアニリン、ポリフタロシアニン、アズレン等非ベンゼ
ン系芳香族化合物、及びこれらのポリマーを構成するモ
ノマーの誘導体の重合体等が挙げられる。
Further, as the conductive polymer compound constituting the polymer film of the solid electrolyte formed by electrolytic polymerization, polyacetylene, polypyrrole, polythiophene, polycyanoacetylene, polyisothianaphthene, polydiacetylene, polyaniline, polyphthalocyanine, azulene and the like non- Examples thereof include benzene-based aromatic compounds, and polymers of derivatives of monomers constituting these polymers.

さらに、支持塩としてのボロジサリチル酸の塩として
は、ボロジサリチル酸アンモニウム塩、ボロジサリチル
酸モノアルキルアンモニウム塩、ボロジサリチル酸ジア
ルキルアンモニウム塩、ボロジサリチル酸トリアルキル
アンモニウム塩、ボロジサリチル酸テトラアルキルアン
モニウム塩等が挙げられる。
Further, as salts of borodisalicylic acid as a supporting salt, ammonium borodisalicylate, monoalkylammonium borodisalicylate, dialkylammonium borodisalicylate, trialkylammonium borodisalicylate, tetraalkylammonium borodisalicylate Etc.

(実施例) 以下に、実施例にて本発明を具体的に説明するが、本発
明はこれら実施例のみに限定されるものではない。な
お、いずれの実施例並びに比較例についても、陽極とし
て3cm×5cm、厚さ90μmの高純度アルミニウム箔を用
い、このアルミニウムを35Vの電圧で陽極酸化を行い、
表面に酸化アルミニウムの誘電体層を形成した化成箔を
共通に用いた。
(Examples) Hereinafter, the present invention will be specifically described with reference to Examples, but the present invention is not limited to these Examples. In each of the Examples and Comparative Examples, a high purity aluminum foil having a size of 3 cm × 5 cm and a thickness of 90 μm was used as an anode, and this aluminum was anodized at a voltage of 35 V.
A chemical conversion foil having a dielectric layer of aluminum oxide formed on the surface was commonly used.

実施例1: ボロジサリチル酸のテトラエチルアンモニウム塩0.09M/
l、テトラエチルアンモニウムp−トルエンスルホン酸
塩0.01M/lを含むアセトニトリル溶液中で、前記化成箔
を陽極、陰極にステンレス板を用いて、ピロールを15mA
/cm2の電流密度で1時間電解重合し、カーボンペースト
と銀ペーストで陰極を取り出し樹脂封口した。
Example 1: Borodisalicylic acid tetraethylammonium salt 0.09 M /
l, in a solution of tetraethylammonium p-toluenesulfonate 0.01M / l in acetonitrile, the chemical conversion foil was used as an anode, a stainless steel plate was used as a cathode, and pyrrole was 15mA.
Electrolysis was carried out for 1 hour at a current density of / cm 2 , and the cathode was taken out with a carbon paste and a silver paste and the resin was sealed.

実施例2: ボロジサリチル酸のトルエチルアンモニウム塩0.8M/l、
2−ナフタリンスルホン酸0.02M/lを含むアセトニトリ
ル溶液中で、化成箔を陽極に、陰極にPt板を用いてアズ
レンを10mA/cm2で1時間電解重合し、カーボンペースト
と銀ペーストで陰極を取り出し樹脂封口した。
Example 2: Tolethylammonium salt of borodisalicylic acid 0.8 M / l,
In a acetonitrile solution containing 0.02 M / l of 2-naphthalenesulfonic acid, azurene is electrolytically polymerized at 10 mA / cm 2 for 1 hour by using a conversion foil as an anode and a Pt plate as a cathode, and the cathode is made of carbon paste and silver paste. The resin was taken out and sealed.

実施例3: ボロジサリチル酸のアンモニウム塩0.09M/l、ドデシル
ベンゼンスルホン酸0.01M/lを含むアセトニトリル溶液
中で、化成箔を陽極に、ステンレス板を陰極に用いて、
3−メチルピロールを15mA/cm2で1時間電解重合し、カ
ーボンペーストと銀ペーストで陰極を取り出し樹脂封口
した。
Example 3: Borodisalicylic acid ammonium salt 0.09 M / l, in an acetonitrile solution containing dodecylbenzenesulfonic acid 0.01 M / l, a chemical conversion foil as an anode, using a stainless steel plate as a cathode,
3-Methylpyrrole was electropolymerized at 15 mA / cm 2 for 1 hour, and the cathode was taken out with a carbon paste and a silver paste and the resin was sealed.

実施例4: 0.09M/lボロジサリチル酸テトラn−ブチルアンモニウ
ム塩、0.01M/lベンゼンスルホン酸を含むTHF溶液中で、
化成箔を陽極に、陰極にPt板を用いて、3−エチルチオ
フェンを10mA/cm2で1時間電解重合し、カーボンペース
トと銀ペーストを用いて陰極を引出し、樹脂封口した。
Example 4: 0.09 M / l borodisalicylic acid tetra n-butylammonium salt, in a THF solution containing 0.01 M / l benzenesulfonic acid,
Using the formed foil as an anode and a Pt plate as a cathode, 3-ethylthiophene was electrolytically polymerized at 10 mA / cm 2 for 1 hour, and the cathode was pulled out using a carbon paste and a silver paste, and the resin was sealed.

実施例5: 0.09M/lのボロジサリチル酸ジisoプロピルアンモニウム
塩、0.01M/lの2,6−ナフタリンジスルホン酸を含むアセ
トニトリル溶液中で、3,4−ジメチルチオフェンを化成
箔を陽極に、Ptを陰極に用いて、10mA/cm2で1時間電解
重合し、カーボンペーストと銀ペーストを用いて陰極を
引き出し樹脂封口した。
Example 5: 0.09 M / l borodisalicylic acid diisopropylammonium salt, 0.01 M / l in a solution of 2,6-naphthalene disulfonic acid in acetonitrile, 3,4-dimethylthiophene was formed into a positive electrode with a conversion foil. Using Pt as a cathode, electrolytic polymerization was carried out at 10 mA / cm 2 for 1 hour, and the cathode was drawn out using a carbon paste and a silver paste to seal the resin.

比較例1: 0.31M/lのボロジサリチル酸アンモニウム塩10重量%を
含む水1重量%、アセトニトリル88重量%の溶液中で、
化成箔にピロール1重量%を化成電位以上(1〜10mA/c
m2)で、2時間電解重合し、カーボンペーストと銀ペー
ストで陽極を取り出し樹脂封口した。
Comparative Example 1: In a solution of 1% by weight of water and 88% by weight of acetonitrile containing 10% by weight of 0.31 M / l ammonium borodisalicylic acid salt,
1% by weight of pyrrole in the chemical conversion foil above the chemical conversion potential (1-10mA / c
m 2 ), electropolymerization was carried out for 2 hours, the anode was taken out with a carbon paste and a silver paste, and the resin was sealed.

比較例2: ボロジサリチル酸のアンモニウム塩0.09M/l、テトラエ
チルアンモニウムフルオロボーレイト0.01M/lを含むア
セトニトリル液中で、化成箔上に、ピロールを15mA/cm2
で1時間電解重合し、カーボンペーストと銀ペーストで
陰極を取り出し樹脂封口した。
Comparative example 2: Borodisalicylic acid ammonium salt 0.09M / l, in an acetonitrile solution containing tetraethylammonium fluoroborate 0.01M / l, on the formed foil, pyrrole 15mA / cm 2
Electrolytic polymerization was carried out for 1 hour, and the cathode was taken out with a carbon paste and a silver paste and the resin was sealed.

以上の結果を下記第1表、第2表に示す。The above results are shown in Tables 1 and 2 below.

なお、第1表は初期の値、第2表は105℃で2000時間の
寿命試験実施後の値である。
In addition, Table 1 shows initial values, and Table 2 shows values after a life test of 2000 hours at 105 ° C.

第1表、第2表からみて、本発明実施例により得られる
固体電解コンデンサは熱安定性及び耐久性のすぐれたも
のであることが判る。
It can be seen from Tables 1 and 2 that the solid electrolytic capacitors obtained by the examples of the present invention have excellent thermal stability and durability.

(発明の効果) 以上詳細に説明した通り、本発明方法によれば、電解重
合用支持塩としてのボロジサリチル酸の塩及び芳香族ス
ルホン酸又はその塩を添加することにより、熱安定性の
高い重合膜、そして優れた電気的特性を有する固体電解
コンデンサを得ることができる。
(Effects of the Invention) As described in detail above, according to the method of the present invention, by adding a salt of borodisalicylic acid and an aromatic sulfonic acid or a salt thereof as a supporting salt for electrolytic polymerization, high thermal stability is achieved. It is possible to obtain a polymer film and a solid electrolytic capacitor having excellent electrical characteristics.

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】固体電解コンデンサの製造の際の誘電体金
属酸化物皮膜上に、電解重合により固体電解質のポリマ
ー膜を形成する工程において、支持塩としてのボロジサ
リチル酸の塩、及び芳香族スルホン酸又はその塩を添加
することを特徴とする固体電解コンデンサの製造方法。
1. A step of forming a polymer film of a solid electrolyte by electrolytic polymerization on a dielectric metal oxide film in the production of a solid electrolytic capacitor, wherein a salt of borodisalicylic acid as a supporting salt and an aromatic sulfone are used. A method for producing a solid electrolytic capacitor, which comprises adding an acid or a salt thereof.
【請求項2】芳香族スルホン酸が、p−トルエンスルホ
ン酸、2−ナフタリンスルホン酸又はドデシルベンゼン
スルホン酸のいずれかであることを特徴とする請求項1
記載の固体電解コンデンサの製造方法。
2. The aromatic sulfonic acid is any one of p-toluenesulfonic acid, 2-naphthalenesulfonic acid and dodecylbenzenesulfonic acid.
A method for producing the solid electrolytic capacitor described.
JP21093088A 1988-08-25 1988-08-25 Method for manufacturing solid electrolytic capacitor Expired - Fee Related JPH0682593B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21093088A JPH0682593B2 (en) 1988-08-25 1988-08-25 Method for manufacturing solid electrolytic capacitor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21093088A JPH0682593B2 (en) 1988-08-25 1988-08-25 Method for manufacturing solid electrolytic capacitor

Publications (2)

Publication Number Publication Date
JPH0258817A JPH0258817A (en) 1990-02-28
JPH0682593B2 true JPH0682593B2 (en) 1994-10-19

Family

ID=16597435

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21093088A Expired - Fee Related JPH0682593B2 (en) 1988-08-25 1988-08-25 Method for manufacturing solid electrolytic capacitor

Country Status (1)

Country Link
JP (1) JPH0682593B2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0267708A (en) * 1988-09-02 1990-03-07 Nitsuko Corp Manufacture of organic semiconductor solid electrolytic capacitor
JPH08143771A (en) * 1994-11-25 1996-06-04 Nec Corp Heat-resistant poltaniline, derivative therefrom, solid electrolytic capacitor, and process for producing the same
JPH1060234A (en) * 1996-08-16 1998-03-03 Nec Toyama Ltd Electroconductive polymer and its production and solid electrolytic capacitor using the same
JP2015023123A (en) * 2013-07-18 2015-02-02 カーリットホールディングス株式会社 Method for manufacturing solid electrolytic capacitor

Also Published As

Publication number Publication date
JPH0258817A (en) 1990-02-28

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