DE2835747C2 - Method for manufacturing a tantalum solid electrolytic capacitor - Google Patents
Method for manufacturing a tantalum solid electrolytic capacitorInfo
- Publication number
- DE2835747C2 DE2835747C2 DE19782835747 DE2835747A DE2835747C2 DE 2835747 C2 DE2835747 C2 DE 2835747C2 DE 19782835747 DE19782835747 DE 19782835747 DE 2835747 A DE2835747 A DE 2835747A DE 2835747 C2 DE2835747 C2 DE 2835747C2
- Authority
- DE
- Germany
- Prior art keywords
- electrolyte
- electrolytic capacitor
- tantalum solid
- manufacturing
- solid electrolytic
- 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
- 239000003990 capacitor Substances 0.000 title claims description 8
- 238000000034 method Methods 0.000 title claims description 6
- 229910052715 tantalum Inorganic materials 0.000 title claims description 6
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 title claims description 6
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 239000007787 solid Substances 0.000 title claims description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 6
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 6
- 239000003792 electrolyte Substances 0.000 claims description 6
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 2
- 229910017604 nitric acid Inorganic materials 0.000 claims description 2
- DDFHBQSCUXNBSA-UHFFFAOYSA-N 5-(5-carboxythiophen-2-yl)thiophene-2-carboxylic acid Chemical compound S1C(C(=O)O)=CC=C1C1=CC=C(C(O)=O)S1 DDFHBQSCUXNBSA-UHFFFAOYSA-N 0.000 claims 1
- -1 fluoride ions Chemical class 0.000 claims 1
- 239000007784 solid electrolyte Substances 0.000 claims 1
- 239000000454 talc Substances 0.000 claims 1
- 229910052623 talc Inorganic materials 0.000 claims 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- H01G9/0029—Processes of manufacture
- H01G9/0032—Processes of manufacture formation of the dielectric layer
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Description
2020th
Die Erfindung betrifft ein Verfahren gemäß dem Oberbegriff des ersten Anspruchs.The invention relates to a method according to the preamble of the first claim.
Nach einem bekannten Verfahren (DE-AS 24 20 375) wird zur Herstellung eines Elektrolytkondensators eine hydratisierte Aluminiumfolie zur Verbesserung des Reststromverhaltens in einem Zitronensäure, Phosphorsäure und Ammoniak enthaltenden Elektrolyten anodisch oxidiert.According to a known method (DE-AS 24 20 375) is to produce an electrolytic capacitor hydrated aluminum foil to improve the residual current behavior in a citric acid, Electrolytes containing phosphoric acid and ammonia are anodically oxidized.
Es ist auch ein Verfahren zur Herstellung von Elektrolyt-Kondensatoren bekannt (DE-AS 12 34 322), nach jo weichem dünne Bänder oder Folien zur Vergrößerung der Oberfläche in einen Elektrolyten eingetaucht und ats Anode geschaltet werden. Bei diesem Aufrauhverfahren, bei dem Partikel des Elektrodenmetalls, beispielsweise Tantal, abgetragen werden, bildet sich in den winzigen Poren auf der Oberfläche der Körper ein Belag, der zu einem relativ hohen Verlustfaktor führt. Um diesem Mangel zu begegnen, wird der Elektrodenkörper für einige Sekunden in eine wäßrige Flußsäurelösung getaucht und anschließend mit Wasser gespült, um die Flußsäurereste zu entfernen. Nachfolgend wird eine Formierung durchgeführt, bei welcher eine dünne, als Dielektrikum wirkende Oxidschicht erzeugt wird. Die so gefertigten Elektroden werden für die Herstellung von Elektrolytkondensatoren verwendet.It is also a method of making electrolytic capacitors known (DE-AS 12 34 322), after jo soft thin ribbons or foils for enlargement the surface can be immersed in an electrolyte and switched ats anode. In this roughening process, in which particles of the electrode metal, for example tantalum, are removed, forms in the tiny pores on the surface of the body create a coating that leads to a relatively high loss factor. Around To counteract this deficiency, the electrode body is immersed in an aqueous hydrofluoric acid solution for a few seconds immersed and then rinsed with water to remove the hydrofluoric acid residues. Below is a Formation carried out in which a thin oxide layer acting as a dielectric is produced. the Electrodes manufactured in this way are used in the manufacture of electrolytic capacitors.
Es ist auch ein Verfahren zum Herstellen eines Tantal-Festelektrolytkondensators mit einem gesinterten Tantalkörper bekannt (DE-AS 21 26 409), nach dem zur Bedeckung der gesamten inneren Oberfläche mit einer leitfähigen Schicht und zur Herabsetzung des Verlustwinkeis eine Mangandioxidschicht in einer Stärke von 5—200 Molekülen auf der Elektrode abgeschieden wird. Die Formierung erfolgt dabei in einer Salpetersäureoder Phosphorsäurelösung.It is also a method of manufacturing a tantalum solid electrolytic capacitor with a sintered tantalum body known (DE-AS 21 26 409), after which to cover the entire inner surface with a conductive layer and to reduce the loss angle a manganese dioxide layer with a thickness of 5–200 molecules are deposited on the electrode. The formation takes place in a nitric acid or Phosphoric acid solution.
Bei den bekannten Tantal-Festelektrolytkondensatoren ist stets auf die Polarität der Anschlüsse zu achten, da nur eine geringe Gegenspannungsfestigkeit gegeben ist.With the known tantalum solid electrolytic capacitors, always pay attention to the polarity of the connections, because there is only a low countervoltage resistance.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren gemäß dem Oberbegriff des ersten Anspruchs w anzugeben, bei dem durch die Wahl des Formierelcktrolytcn die Gegenspannungsfestigkeit erhöht istThe invention is based on the object of specifying a method according to the preamble of the first claim w , in which the counter-voltage strength is increased by the choice of the forming tension resistance
Die Lösung dieser Aufgabe wird durch das kennzeichnende Merkmal des ersten Anspruchs erreicht.The solution to this problem is achieved by the characterizing feature of the first claim.
Die mit der Erfindung erzielten Vorteile bestehen ins- br> besondere darin, daß die Gcgenspannungsfestigkcit durch die Anwendung der Fluoridionendotierung um mindestens 25% verbessert wird gegenüber der Gegen-The advantages achieved with the invention consist INS b r> particular that the Gcgenspannungsfestigkcit is improved by the application of fluoride ion doping at least 25% compared to the counter
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19782835747 DE2835747C2 (en) | 1978-08-16 | 1978-08-16 | Method for manufacturing a tantalum solid electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19782835747 DE2835747C2 (en) | 1978-08-16 | 1978-08-16 | Method for manufacturing a tantalum solid electrolytic capacitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2835747A1 DE2835747A1 (en) | 1980-02-28 |
| DE2835747C2 true DE2835747C2 (en) | 1984-05-30 |
Family
ID=6047093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19782835747 Expired DE2835747C2 (en) | 1978-08-16 | 1978-08-16 | Method for manufacturing a tantalum solid electrolytic capacitor |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE2835747C2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115240996B (en) * | 2022-08-02 | 2024-01-12 | 陕西科技大学 | Preparation F - Ion doped delta-MnO 2 Method for preparing electrode material of super capacitor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1234322B (en) * | 1963-09-24 | 1967-02-16 | Siemens Ag | Process for the production of electrolytic capacitors |
| CH532831A (en) * | 1970-03-27 | 1973-02-28 | Kapsch Telephon Telegraph | Laminated bodies for the manufacture of electrical components and methods of manufacturing the same |
-
1978
- 1978-08-16 DE DE19782835747 patent/DE2835747C2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2835747A1 (en) | 1980-02-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8110 | Request for examination paragraph 44 | ||
| 8126 | Change of the secondary classification |
Ipc: H01G 9/24 |
|
| 8127 | New person/name/address of the applicant |
Owner name: TELEFUNKEN ELECTRONIC GMBH, 7100 HEILBRONN, DE |
|
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |