JPS6015141B2 - Manufacturing method of solid electrolytic capacitor - Google Patents
Manufacturing method of solid electrolytic capacitorInfo
- Publication number
- JPS6015141B2 JPS6015141B2 JP13988879A JP13988879A JPS6015141B2 JP S6015141 B2 JPS6015141 B2 JP S6015141B2 JP 13988879 A JP13988879 A JP 13988879A JP 13988879 A JP13988879 A JP 13988879A JP S6015141 B2 JPS6015141 B2 JP S6015141B2
- Authority
- JP
- Japan
- Prior art keywords
- solid electrolytic
- manufacturing
- electrolytic capacitor
- manganese nitrate
- aqueous solution
- 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
Links
Landscapes
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Description
【発明の詳細な説明】
本発明は、固体電解コンデンサの製造方法に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a solid electrolytic capacitor.
一般に、固体電解コンデンサは、タンタルやアルミニウ
ム、チタン等の弁作用を有する金属表面に誘電体酸化皮
膜を生成し、さらにこれを硝酸等の金属塩溶液に浸潰し
熱分解して二酸化マンガン等の半導体的性質を有する金
属酸化物を被着した後、カーボン層及び金属層を形成す
ることによって製造される。In general, solid electrolytic capacitors are produced by forming a dielectric oxide film on the surface of a valve-acting metal such as tantalum, aluminum, or titanium, which is then soaked in a metal salt solution such as nitric acid and thermally decomposed to produce a semiconductor such as manganese dioxide. It is manufactured by depositing a metal oxide with chemical properties and then forming a carbon layer and a metal layer.
すなわち、誘電体酸化皮膜の上に半導体層を被看するの
に金属塩の熱分解を行なう必要がある。That is, it is necessary to thermally decompose the metal salt to coat the semiconductor layer on the dielectric oxide film.
例えばタンタル固体電解コンデンサの場合には、タンタ
ル焼結体上に二酸化マンガン層を形成するが、そのため
には焼結体を硝酸マンガンへ浸潰して硝酸マンガンを合
浸し高温（２００〜３００ｏｏ）において熱分解する工
程を数回〜１の数回繰り返さなければならない。それ故
、コンデンサの製造工程中、この浸薄と熱分解に多くの
時間を要し、その簡略化が望まれていた。また、高温に
おいて熱分解を繰り返すために、タンタル酸化皮膜が劣
化し、漏れ電流等の特性を劣化させるという欠′点もあ
った。本発明は、以上の欠点を改良し、製造が容易にな
り、漏れ電流等の特性を向上しうる固体電解コンデンサ
の製造方法の提供を目的とするものである。For example, in the case of tantalum solid electrolytic capacitors, a manganese dioxide layer is formed on a tantalum sintered body, but for this purpose, the sintered body is immersed in manganese nitrate, the manganese nitrate is soaked, and then heated at a high temperature (200 to 300 oo). The decomposition process must be repeated several times to several times. Therefore, during the capacitor manufacturing process, a lot of time is required for this soaking and thermal decomposition, and it has been desired to simplify the process. Furthermore, due to repeated thermal decomposition at high temperatures, the tantalum oxide film deteriorates, resulting in deterioration of characteristics such as leakage current. An object of the present invention is to provide a method for manufacturing a solid electrolytic capacitor that can improve the above-mentioned drawbacks, facilitate manufacturing, and improve characteristics such as leakage current.
本発明は、上記の目的を達成するために、弁作用を有す
る金属に誘電体酸化皮膜を生成した後、硝酸マンガン水
溶液を含浸し熱分解することによって二酸化マンガン層
を設け、カーボン層及び導電層を順次形成する固体電解
コンデンサの製造方法において、Ｎｉ○−Ｓｉ０２から
なる吸着剤の添加された硝酸マンガン水溶液を熱分解す
ることを特徴とする固体電解コンデンサの製造方法を提
供するものである。In order to achieve the above object, the present invention generates a dielectric oxide film on a metal having a valve action, and then impregnates a manganese nitrate aqueous solution and thermally decomposes it to form a manganese dioxide layer, and forms a carbon layer and a conductive layer. The present invention provides a method for manufacturing a solid electrolytic capacitor, which comprises thermally decomposing a manganese nitrate aqueous solution to which an adsorbent consisting of Ni○-Si02 is added.
本発明は、硝酸マンガン水溶液の熱分解の際に、Ｎｉ○
−Ｓ；０２の吸着剤が存在するために、通常、硝酸マン
ガン水溶液の熱分解の際に発生する窒素酸化物がこの吸
着剤に吸着され、熱分解反応が促進され、製造時間が短
縮される）また、熱分解の際の温度も従釆に比べ３０〜
５０００程度に下げることができるので、誘電体酸化皮
膜の劣化も減少でき漏れ電流等の特性も改善される。In the present invention, when thermally decomposing a manganese nitrate aqueous solution,
Due to the presence of the -S;02 adsorbent, nitrogen oxides that are normally generated during thermal decomposition of an aqueous manganese nitrate solution are adsorbed to this adsorbent, promoting the thermal decomposition reaction and shortening the production time. ) Also, the temperature during thermal decomposition is 30~
Since it can be lowered to about 5,000, deterioration of the dielectric oxide film is also reduced and characteristics such as leakage current are improved.
以下、本発明を実施例に基づいて説明する。Hereinafter, the present invention will be explained based on examples.
先ず、タンタル粉末を形成、燐結し、化成する。化成後
、焼結体を硝酸マンガン水溶液中に浸潰して液を含浸す
る。硝酸マンガン水溶液中にはＮｉ○−Ｓｉ０２が吸着
剤として添加されている。液を含浸後、暁結体を焼成し
、二酸化マンガン層を形成する。焼成後は、再化成処理
やカーボン塗布、銀ペースト塗布等の処理を行い、コン
デンサを形成する。上記の本発明の方法により製造した
実施例と、従来方法により製造したものについて諸特性
を比較した。First, tantalum powder is formed, phosphorized, and chemically converted. After chemical formation, the sintered body is immersed in an aqueous manganese nitrate solution to impregnate it with the liquid. Ni○-Si02 is added to the manganese nitrate aqueous solution as an adsorbent. After impregnating with the liquid, the Akatsuki compact is fired to form a manganese dioxide layer. After firing, processes such as reconversion treatment, carbon coating, and silver paste coating are performed to form a capacitor. Various characteristics were compared between the examples manufactured by the method of the present invention described above and those manufactured by the conventional method.
硝酸マンガン水溶液の組成及び熱分解条件は表１の通り
であり、表２のような特性結果が得られた。すなわち、
損失及び漏れ電流については初期特性及び放置後の特性
とも本発明による方が従釆例よりも小さく、また放置後
の容量変化率日についても本発明による方が４・さく、
いずれも特性が改善されている。しかも、熱分解時間も
従来の６０％程度に減少でき、製造時間が短縮される。
表１表 ２
以上の通り、本発明によれば、熱分解に要する時間を短
縮できるので製造が簡単になり、また、熱分解の温度を
減少できるので誘電体酸化皮膜の劣化を抑制でき固体電
解コンデンサの諸特性を改善できる。The composition and thermal decomposition conditions of the manganese nitrate aqueous solution are shown in Table 1, and the characteristic results shown in Table 2 were obtained. That is,
Regarding loss and leakage current, both the initial characteristics and the characteristics after being left unused are smaller in the present invention than in the conventional example, and the capacitance change rate after being left unused is also 4.
Both have improved characteristics. Furthermore, the thermal decomposition time can be reduced to about 60% of the conventional time, and the manufacturing time is shortened.
Table 1 Table 2 As described above, according to the present invention, the time required for thermal decomposition can be shortened, which simplifies manufacturing, and the thermal decomposition temperature can also be reduced, suppressing deterioration of the dielectric oxide film and improving solid electrolysis. Capacitor characteristics can be improved.
Claims (1)
、硝酸マンガン水溶液を含浸し熱分解することによって
二酸化マンガン層を設け、カーボン層及び導電層を順次
形成する固体電解コンデンサの製造方法において、Ｎｉ
Ｏ−ＳｉＯ＿２からなる吸着剤の添加された硝酸マンガ
ン水溶液を熱分解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 method for manufacturing a solid electrolytic capacitor, in which a dielectric oxide film is formed on a metal having a valve action, and then a manganese dioxide layer is provided by impregnating a manganese nitrate aqueous solution and thermally decomposed, and a carbon layer and a conductive layer are sequentially formed, Ni
A method for producing a solid electrolytic capacitor, which comprises thermally decomposing a manganese nitrate aqueous solution to which an adsorbent consisting of O-SiO_2 is added.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13988879A JPS6015141B2 (en) | 1979-10-31 | 1979-10-31 | Manufacturing method of solid electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13988879A JPS6015141B2 (en) | 1979-10-31 | 1979-10-31 | Manufacturing method of solid electrolytic capacitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5664426A JPS5664426A (en) | 1981-06-01 |
| JPS6015141B2 true JPS6015141B2 (en) | 1985-04-17 |
Family
ID=15255924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13988879A Expired JPS6015141B2 (en) | 1979-10-31 | 1979-10-31 | Manufacturing method of solid electrolytic capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6015141B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114974898A (en) * | 2022-06-14 | 2022-08-30 | 中国振华(集团)新云电子元器件有限责任公司(国营第四三二六厂) | Capacitor core and manufacturing method thereof, electrolytic capacitor and manufacturing method thereof |
-
1979
- 1979-10-31 JP JP13988879A patent/JPS6015141B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5664426A (en) | 1981-06-01 |
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