JPS63268232A - Manufacture of solid electrolytic capacitor - Google Patents
Manufacture of solid electrolytic capacitorInfo
- Publication number
- JPS63268232A JPS63268232A JP10353187A JP10353187A JPS63268232A JP S63268232 A JPS63268232 A JP S63268232A JP 10353187 A JP10353187 A JP 10353187A JP 10353187 A JP10353187 A JP 10353187A JP S63268232 A JPS63268232 A JP S63268232A
- Authority
- JP
- Japan
- Prior art keywords
- solid electrolytic
- layer
- electrolytic capacitor
- manganese dioxide
- silver
- 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 abstract description 23
- 239000007787 solid Substances 0.000 title claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 238000000034 method Methods 0.000 claims abstract description 12
- 239000007784 solid electrolyte Substances 0.000 claims description 9
- 239000012670 alkaline solution Substances 0.000 claims description 8
- 239000000243 solution Substances 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 4
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims description 3
- 229910052783 alkali metal Inorganic materials 0.000 claims description 3
- 150000001340 alkali metals Chemical class 0.000 claims description 3
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 3
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 3
- 239000000908 ammonium hydroxide Substances 0.000 claims description 3
- 150000008044 alkali metal hydroxides Chemical class 0.000 claims 1
- 229910001860 alkaline earth metal hydroxide Inorganic materials 0.000 claims 1
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 abstract description 24
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract description 7
- 229910052709 silver Inorganic materials 0.000 abstract description 7
- 239000004332 silver Substances 0.000 abstract description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 5
- 229910002804 graphite Inorganic materials 0.000 abstract description 5
- 239000010439 graphite Substances 0.000 abstract description 5
- MIVBAHRSNUNMPP-UHFFFAOYSA-N manganese(2+);dinitrate Chemical compound [Mn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MIVBAHRSNUNMPP-UHFFFAOYSA-N 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 239000004020 conductor Substances 0.000 abstract description 3
- 238000013508 migration Methods 0.000 abstract description 3
- 230000005012 migration Effects 0.000 abstract description 3
- 239000011347 resin Substances 0.000 abstract description 3
- 229920005989 resin Polymers 0.000 abstract description 3
- 229910052715 tantalum Inorganic materials 0.000 abstract description 3
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 abstract description 3
- 229910000679 solder Inorganic materials 0.000 abstract description 2
- 238000012546 transfer Methods 0.000 abstract description 2
- 238000005406 washing Methods 0.000 abstract description 2
- 230000003113 alkalizing effect Effects 0.000 abstract 1
- 238000007743 anodising Methods 0.000 abstract 1
- 238000007598 dipping method Methods 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 238000000197 pyrolysis Methods 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 13
- 239000007864 aqueous solution Substances 0.000 description 8
- 239000007788 liquid Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005979 thermal decomposition reaction Methods 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- BDAGIHXWWSANSR-UHFFFAOYSA-M Formate Chemical compound [O-]C=O BDAGIHXWWSANSR-UHFFFAOYSA-M 0.000 description 1
- JVTAAEKCZFNVCJ-UHFFFAOYSA-M Lactate Chemical compound CC(O)C([O-])=O JVTAAEKCZFNVCJ-UHFFFAOYSA-M 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- ITHZDDVSAWDQPZ-UHFFFAOYSA-L barium acetate Chemical compound [Ba+2].CC([O-])=O.CC([O-])=O ITHZDDVSAWDQPZ-UHFFFAOYSA-L 0.000 description 1
- RQPZNWPYLFFXCP-UHFFFAOYSA-L barium dihydroxide Chemical compound [OH-].[OH-].[Ba+2] RQPZNWPYLFFXCP-UHFFFAOYSA-L 0.000 description 1
- 229910001863 barium hydroxide Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical class OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001599 direct drying Methods 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- UUCCCPNEFXQJEL-UHFFFAOYSA-L strontium dihydroxide Chemical compound [OH-].[OH-].[Sr+2] UUCCCPNEFXQJEL-UHFFFAOYSA-L 0.000 description 1
- 229910001866 strontium hydroxide Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229940095064 tartrate Drugs 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/022—Electrolytes; Absorbents
- H01G9/025—Solid electrolytes
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は固体電解コンデンサの製造方法に関するもので
あシ、特に樹脂外装固体電解コンデンサの湿中特性にお
ける漏れ電流の安定な固体電解コンデンサを得ることで
ある。[Detailed Description of the Invention] Industrial Application Field The present invention relates to a method for manufacturing a solid electrolytic capacitor, and in particular to a method for producing a solid electrolytic capacitor with stable leakage current in wet characteristics of a resin-clad solid electrolytic capacitor. be.
従来の技術 従来のこの種の固体電解コンデンサはタンタル。Conventional technology Conventional solid electrolytic capacitors of this type are tantalum.
チタン、ニオブ、アルミニウム等の皮膜形成金属の陽極
体の表面を陽極酸化して誘電体酸化皮膜を形成し、次い
で硝酸マンガン水溶液でその表面を３ヘー／
濡らし、熱処理することにより酸化皮膜上に二酸化マン
ガンの固体電解質層を形成し、更にグラファイト、銀の
導電性物質で被覆した後、金属ケース内への封入、又は
樹脂外装被覆を施して完成されている。The surface of the anode body of a film-forming metal such as titanium, niobium, aluminum, etc. is anodized to form a dielectric oxide film, and then the surface is wetted with a manganese nitrate aqueous solution at 3 H/min and heat treated to form a dielectric film on the oxide film. After forming a solid electrolyte layer of manganese and coating it with conductive materials such as graphite and silver, the device is sealed in a metal case or coated with a resin exterior.
ところで、固体電解コンデンサの特性を左右する固体電
解質としての二酸化マンガン層の形成に関しては、従来
よシ種々の工夫が施されておシ、例えば先に形成させた
誘電体酸化皮膜をできるだけ傷めないようにするべく、
熱分解条件を緩和する効果をもたらす物質を予じめ硝酸
マンガン溶液に加えたシ、或いは形成された二酸化マン
ガンの改質をはかるべく同じく硝酸マンガンに添加物を
施す多くの試みがなされている。By the way, with regard to the formation of a manganese dioxide layer as a solid electrolyte that influences the characteristics of solid electrolytic capacitors, various measures have been taken in the past, for example, to avoid damaging the previously formed dielectric oxide film as much as possible. In order to
Many attempts have been made to pre-add substances to the manganese nitrate solution which have the effect of mitigating the thermal decomposition conditions, or to similarly apply additives to the manganese nitrate in order to modify the manganese dioxide formed.
発明が解決しようとする問題点
しかしながら、従来の方法で作成された樹脂外装固体電
解コンデンサについて、これらを例えば、８５℃９０％
の高温高湿の条件下で定格電圧印加、又は無負荷放置し
た場合、経過時間とともに漏れ電流値の増大、耐圧の低
下、及び短絡不良の発生するものが散見される。この現
象は無負荷放置の場合が顕著である。Problems to be Solved by the Invention However, regarding resin-clad solid electrolytic capacitors made by conventional methods, for example, 85°C 90%
When the rated voltage is applied or left unloaded under high temperature and high humidity conditions, leakage current increases, breakdown voltage decreases, and short circuit failures occur over time. This phenomenon is noticeable when left unloaded.
この原因は、高温高湿下で銀がイオン化して誘電体酸化
皮膜上まで移動するいわゆるマイグレーション現象によ
るものである。This is due to the so-called migration phenomenon in which silver is ionized under high temperature and high humidity and migrates onto the dielectric oxide film.
問題点を解決するだめの手段
本発明は、このような欠点を改善するもので、固体電解
コンデンサの製造に際し、二酸化マンガン層等の固体電
解質層の形成後、二酸化マンガン層等の固体電解質層を
著しく溶解しない程度のアルカリ金属、アルカリ土類金
属の水酸化物の希薄アルカリ溶液及びこれらの弱酸塩の
希薄アルカリ溶液、或は水酸化アンモニウム溶液の夫々
単独、又は混合溶液に浸漬し、湯洗乾燥又は湯洗熱処理
、或はこれらの溶液に浸漬して直に乾燥又は熱処理を施
すことなどにより二酸化マンガン層等の固体電解質層の
アルカリ処理を施し、しかる後グラファイト、銀導電性
物質の陰極層を形成する方法である。Means for Solving the Problems The present invention is intended to improve these drawbacks, and in manufacturing a solid electrolytic capacitor, after forming a solid electrolyte layer such as a manganese dioxide layer, the solid electrolyte layer such as a manganese dioxide layer is Immerse in dilute alkaline solutions of hydroxides of alkali metals and alkaline earth metals to the extent that they do not dissolve significantly, dilute alkaline solutions of weak acid salts of these metals, or ammonium hydroxide solutions, either alone or in a mixture, and wash with hot water and dry. Alternatively, the solid electrolyte layer such as the manganese dioxide layer is subjected to alkali treatment by hot water washing heat treatment, immersion in these solutions and direct drying or heat treatment, and then a cathode layer of graphite or silver conductive material is applied. This is a method of forming.
なお、上記アルカリ金属又はアルカリ土類金属６へ−７
の弱酸塩溶液を使用する場合、充分な溶解度をもつもの
であって二酸化マンガン等の固体電解質を著しく変質さ
せないものであれば、アニオン側の形態は問わない。In addition, when using a weak acid salt solution of the alkali metal or alkaline earth metal 6 to 7, as long as it has sufficient solubility and does not significantly alter the solid electrolyte such as manganese dioxide, the anion side The form does not matter.
これに適する上記塩類としては、炭酸塩、炭酸水素塩、
酢酸塩、蟻酸塩、酒石酸塩、クエン酸塩。The above salts suitable for this purpose include carbonates, hydrogen carbonates,
Acetate, formate, tartrate, citrate.
乳酸塩等がある。There are lactate, etc.
作用
このような本発明の方法によれば、二酸化マンガン層が
アルカリ性を帯びるだめ銀のイオン化が防止でき、従っ
てマイグレーションが生じないため、高温高湿の条件下
であっても、漏れ電流の増大、耐圧の低下、短絡不良な
どが発生しない。Effect: According to the method of the present invention, since the manganese dioxide layer becomes alkaline, ionization of silver can be prevented and migration does not occur, so even under high temperature and high humidity conditions, increase in leakage current, No drop in withstand voltage or short circuit failures will occur.
実施例 以下、本発明の一実施例につき説明する。Example An embodiment of the present invention will be described below.
〔実施例１〕
陽極酸化により誘電体酸化皮膜を形成させた多孔質タン
タル焼結体に硝酸マンガン水溶液を含浸させ、２５０℃
で熱分解して酸化皮膜上に二酸化マンガン層を形成させ
、再化成終了後、６ｏ℃６１、−＞
０．１Ｍ／βの水酸化ナトリウム水溶液に３０分間浸漬
し、湯洗乾燥後、グラファイト層を施し、更に銀層、半
田層を設け、トランスファー樹脂モールドで外装して固
体電解コンデンサとした。[Example 1] A porous tantalum sintered body on which a dielectric oxide film was formed by anodic oxidation was impregnated with an aqueous manganese nitrate solution and heated at 250°C.
A manganese dioxide layer is formed on the oxide film by thermal decomposition, and after completion of re-formation, it is immersed in a sodium hydroxide aqueous solution of 61°C -> 0.1M/β for 30 minutes, washed with hot water and dried, and then a graphite layer is formed. A silver layer and a solder layer were applied, and the capacitor was packaged with a transfer resin mold to form a solid electrolytic capacitor.
これについて、温度８５℃湿度９０％の条件下で無負荷
放置する耐湿試験を行い、１０００時間後、常温で耐圧
特性、短絡故障発生率を、二酸化マンガン層のアルカリ
処理しない以外は全く同様に作成した従来品と比較した
。Regarding this, we conducted a humidity test by leaving it under no load at a temperature of 85 degrees Celsius and a humidity of 90%, and after 1000 hours, the pressure resistance characteristics and short circuit failure rate were measured at room temperature using the same method except that the manganese dioxide layer was not treated with alkali. compared with the conventional product.
〔実施例２〕
アルカリ処理液として６０°Ｃ０，１Ｍ７１水酸化カリ
ウム水溶液を使用したこと以外は実施例つと全く同様に
作成して耐湿試験を実施例１と同様に行なった。[Example 2] A sample was prepared in exactly the same manner as in Example 1, except that a 60°C, 1M 71 potassium hydroxide aqueous solution was used as the alkaline treatment liquid, and a moisture resistance test was conducted in the same manner as in Example 1.
〔実施例３〕
アルカリ処理液として６０℃０．１ Ｍ／ｌ 水酸化ス
トロンチウム水溶液を使用した以外は実施例１と同様な
処理を行なって完成品とし耐湿試験を行なった。[Example 3] A finished product was subjected to the same treatment as in Example 1, except that a 60° C. 0.1 M/l strontium hydroxide aqueous solution was used as the alkaline treatment liquid, and a moisture resistance test was conducted.
〔実施例４〕 ７１＼−。[Example 4] 71\-.
アルカリ処理液として６０℃０．１Ｍ／β水酸化バリウ
ム水溶液を使用した以外は実施例１と同様な処理を行な
って完成品とし、実施例１と同様な耐湿試験を行なった
。A finished product was prepared by performing the same treatment as in Example 1, except that a 60° C. 0.1 M/β barium hydroxide aqueous solution was used as the alkaline treatment liquid, and the same moisture resistance test as in Example 1 was conducted.
〔実施例５〕
アルカリ処理液として６０℃０゜８Ｍ／ｌ の炭酸ナト
リウム水溶液を使用した以外は実施例１と同様な処理を
行なって完成品とし、実施例１と同様な耐湿試験を行な
った。[Example 5] The same treatment as in Example 1 was performed except that an aqueous sodium carbonate solution of 60°C, 0°, and 8M/l was used as the alkaline treatment liquid to obtain a finished product, and the same moisture resistance test as in Example 1 was conducted. .
〔実施例６〕
アルカリ処理液として６０℃Ｏ，ＢＭ／ｌの炭酸カリウ
ム水溶液を使用した以外は実施例１と同様な処理を行な
って完成品とし、実施例１と同様な耐湿試験を行なった
。[Example 6] A finished product was obtained by performing the same treatment as in Example 1, except that an aqueous potassium carbonate solution of 60° C.O., BM/l was used as the alkaline treatment liquid, and the same moisture resistance test as in Example 1 was conducted. .
アルカリ処理液として６０℃ｏ＜Ｍ／ｌ 酢酸ストｏ
ンテウム水溶液を使用した以外は実施例１と同様な処理
を行なって完成品とし、実施例１と同様な耐湿試験を行
なった。As an alkaline treatment solution, 60°C o<M/l acetic acid stoichiometry
A finished product was obtained by performing the same treatment as in Example 1, except that an aqueous solution of Nteum was used, and the same moisture resistance test as in Example 1 was conducted.
〔実施例８〕
アルカリ処理液として６０℃０．４Ｍ／（Ｊ酢酸バリウ
ム水溶液を使用した以外は実施例１と同様な処理を行な
って完成品とし、実施例１と同様な耐湿試験を行なった
。[Example 8] The same treatment as in Example 1 was performed except that a 60°C 0.4 M/(J barium acetate aqueous solution was used as the alkaline treatment liquid) to obtain a finished product, and the same moisture resistance test as in Example 1 was conducted. .
〔実施例９〕
アルカリ処理液として６０ ’（：０．８ Ｍ／ｌ水酸
化アンモニウム水溶液を使用した以外は実施例１と同様
な処理を行なって完成品とし、実施例１と同様な耐湿試
験を行なった。[Example 9] A finished product was prepared by performing the same treatment as in Example 1, except that a 60' (:0.8 M/l ammonium hydroxide aqueous solution) was used as the alkaline treatment liquid, and the same moisture resistance test as in Example 1 was carried out. I did it.
この実施例１〜９により製作した固体電解コンデンサと
実施例１で述べた従来品との耐湿試験の結果を比較させ
て次表および図面に示す。なお、表に短絡故障発生率を
示し、図に耐圧特性を示す。The results of the humidity test between the solid electrolytic capacitors manufactured in Examples 1 to 9 and the conventional product described in Example 1 are compared and shown in the following table and drawings. The table shows the short-circuit failure rate, and the figure shows the voltage resistance characteristics.
（以下余白）
９へ一ン
表
試験コンデンサ： ３５Ｖ４．７μＦ
試験条件 二８５°０９０％中に１０００時間無負
荷放置
発明の効果
上記表及び図面より明らかなように、本発明による製造
方法により製作した固体電解コンデンサ１０７、−２
は、従来品に比べ耐圧特性、短絡故障発生率を著しく改
善することができ、これにより本発明の製造方法は工業
的利用価値の高いものである。(Space below) Test capacitor: 35V4.7μF Test conditions: Left unloaded for 1000 hours in 285°090% Effect of the invention As is clear from the above table and drawings, the capacitor manufactured by the manufacturing method of the present invention The solid electrolytic capacitor 107,-2 can significantly improve the withstand voltage characteristics and short-circuit failure rate compared to conventional products, and thus the manufacturing method of the present invention has high industrial utility value.
図は本発明の固体電解コンデンサの製造方法の効果を説
明するだめの温度８５℃、湿度９０％の条件下での固体
電解コンデンサの耐湿試験後の耐圧特性図である。The figure is a breakdown voltage characteristic diagram after a humidity test of a solid electrolytic capacitor under conditions of a temperature of 85° C. and a humidity of 90%, for explaining the effects of the method for manufacturing a solid electrolytic capacitor of the present invention.
Claims (6)
化皮膜を形成し、更にこの上に固体電解質層を形成した
後、固体電解質層を著しく溶解しない程度のアルカリ性
溶液により固体電解質層をアルカリ処理することを特徴
とする固体電解コンデンサの製造方法。(1) Film-forming metal is used as an anode body, a dielectric oxide film is formed on the surface of the anode, and a solid electrolyte layer is further formed on this, and then the solid electrolyte layer is removed using an alkaline solution that does not dissolve the solid electrolyte layer significantly. A method for manufacturing a solid electrolytic capacitor, characterized by alkali treatment.
化物を使用することを特徴とする特許請求の範囲第１項
に記載の固体電解コンデンサの製造方法。(2) The method for manufacturing a solid electrolytic capacitor according to claim 1, characterized in that an alkali metal hydroxide is used as the solute of the alkaline solution.
水酸化物を使用することを特徴とする特許請求の範囲第
１項に記載の固体電解コンデンサの製造方法。(3) The method for manufacturing a solid electrolytic capacitor according to claim 1, characterized in that an alkaline earth metal hydroxide is used as the solute of the alkaline solution.
塩を使用することを特徴とする特許請求の範囲第１項に
記載の固体電解コンデンサの製造方法。(4) The method for manufacturing a solid electrolytic capacitor according to claim 1, characterized in that a weak acid salt of an alkali metal is used as the solute of the alkaline solution.
弱酸塩を使用することを特徴とする特許請求の範囲第１
項に記載の固体電解コンデンサの製造方法。(5) Claim 1 characterized in that a weak acid salt of an alkaline earth metal is used as the solute of the alkaline solution.
A method for manufacturing a solid electrolytic capacitor as described in .
使用することを特徴とする特許請求の範囲第１項に記載
の固体電解コンデンサの製造方法。(6) The method for manufacturing a solid electrolytic capacitor according to claim 1, characterized in that an ammonium hydroxide solution is used as the alkaline solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10353187A JPS63268232A (en) | 1987-04-27 | 1987-04-27 | Manufacture of solid electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10353187A JPS63268232A (en) | 1987-04-27 | 1987-04-27 | Manufacture of solid electrolytic capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63268232A true JPS63268232A (en) | 1988-11-04 |
Family
ID=14356465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10353187A Pending JPS63268232A (en) | 1987-04-27 | 1987-04-27 | Manufacture of solid electrolytic capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63268232A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106548870A (en) * | 2015-09-21 | 2017-03-29 | 中国振华（集团）新云电子元器件有限责任公司 | It is a kind of improve tantalum capacitor breakdown voltage by film method |
-
1987
- 1987-04-27 JP JP10353187A patent/JPS63268232A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106548870A (en) * | 2015-09-21 | 2017-03-29 | 中国振华（集团）新云电子元器件有限责任公司 | It is a kind of improve tantalum capacitor breakdown voltage by film method |
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