DE943303C - Process for enlarging the surface of electrodes for electrolytic capacitors - Google Patents
Process for enlarging the surface of electrodes for electrolytic capacitorsInfo
- Publication number
- DE943303C DE943303C DEN2149D DEN0002149D DE943303C DE 943303 C DE943303 C DE 943303C DE N2149 D DEN2149 D DE N2149D DE N0002149 D DEN0002149 D DE N0002149D DE 943303 C DE943303 C DE 943303C
- Authority
- DE
- Germany
- Prior art keywords
- electrodes
- enlarging
- electrolytic capacitors
- metal
- electrode core
- 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
- 238000000034 method Methods 0.000 title claims description 5
- 239000003990 capacitor Substances 0.000 title description 5
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 239000002923 metal particle Substances 0.000 claims description 2
- 238000005554 pickling Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 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
- 239000013078 crystal Substances 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007788 roughening Methods 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
- H01G9/04—Electrodes or formation of dielectric layers thereon
- H01G9/048—Electrodes or formation of dielectric layers thereon characterised by their structure
- H01G9/055—Etched foil electrodes
-
- 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
- H01G9/04—Electrodes or formation of dielectric layers thereon
- H01G9/048—Electrodes or formation of dielectric layers thereon characterised by their structure
- H01G9/052—Sintered electrodes
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Description
Verfahren zur Vergrößerung der Oberfläche von Elektroden für Elektrolytkondensatoren Die Erfindung betrifft ein Verfahren zur Vergrößerting der Oberfläche von Elektroden für Elektrolytkondensatoren, bei dem der Elektrodenkern mit kleinen, vü#rzugsweise# aus dernselben Meta,11 wie der Elektrodenkern hestehenden Met211-teilche bedeckt ist.Process for increasing the surface area of electrodes for electrolytic capacitors The invention relates to a method for enlarging the surface of electrodes for electrolytic capacitors, in which the electrode core with small, preferably # from the same meta 11 as the electrode core covered Met211 particles is.
Bekanntlith wächst die Kapazität eines Kon#den7 satoirs p-ropo#rtion!al mit der Größe, der Elektroldenoberfläche und umgekehrt propertional mit der Dicke der Dielektrikumschicht zwischen den Elektroden. Dieder ETfin#dung zugrunde- liegende Aufgabe besteht deTin, bei elektrolyti-sthen Kondensajtoren eine sehr große EI-,Ictrodenobt-rfläche zu erhalten, so daß große Kapazitäten in einern ganz kleinen Ra= untergebraicht werden können.As it is known, the capacity of a con # den7 satoir p-ropo # rtion! Al is growing with the size, the electrode surface and vice versa proportionally with the thickness the dielectric layer between the electrodes. The underlying finding The task is deTin, with electrolytic capacitors a very large egg, ictrodenob-surface so that large capacities are subdivided into a very small Ra = can be.
Zu diesem Zweck ist bereits voirgeschilagen worden, die Elektrodenoberfläche aufzurauhen oder mit Unebenheiten zu versehen. Es hatsich gezeigt, daß durch Profilierung oder mechanisches Aufrauhen der Oberfläche mir ane geringe Vergrößerung erzielt wird. Bekanntlich entsteht durch Ätzen odar Beizen reiner Metalle eine Oberflächenaufranhung, da sich die verschiedenen KristaLle des Metalls mit ungleicher Geschwindigkeit im Ätzmittel lös-en.For this purpose, the electrode surface has already been voirgeschilagen to roughen or to provide bumps. It has been shown that by profiling or mechanical roughening of the surface achieved with a low magnification will. It is well known that pure metals are produced by etching or pickling a surface agglomeration, since the different crystals of the metal with dissolve in the etchant at unequal speed.
Trotzdem zeigt es sich. auch heim noirmalen Beizen von Aluminium,,dim ails Matarial für die eT-wähnten Elektrolden zunächst in Betracht kommt, daß die erwarterte besondere Vergrößerung der Oberfläche beim fertiggestellten Kondensator nicht auftritt, was, wenn man von deer -erwähnten Er-Kenntnis ausgefit, vermutlich der Tatsache zuzuschreiben istt, daß infolge der zu schnellen und wirksamen Beiebearbeitung die zuerst entstandenen Spitzen jeweüs wieder weggebeizt -werden.Nevertheless it shows. also used in noirmal pickling of aluminum, dim ails Matarial for the eT-mentioned Electrolden comes first into consideration that the expected particular enlargement of the surface of the completed condenser does not occur, which, if one is trained by the-mentioned He-Knowledge, presumably it is due to the fact that as a result of being processed too quickly and efficiently the tips that emerged first are pickled away again.
Es wurde auch schon voirgeschilagen, eine rauhe und po-röse, OL-!ejrfläche der Elektroden von Elektron lytkond,en-satoren dadurch zu erhalten, daß man die Oberflä,die, die später mit einem dielektri#schen Fil-m üb,eirz-olgen wird, der sitch den Unteibenheiten der MetaU, schicht anpaßt, durch Aufspritzen, eines film,hIldenden Metalls in geschmolzenem Zustand nach dem Prinzip des Scheopschen Metallspritzverfahrens auf eine steife Unterlage erzellgt.It has also been voirgeschilagen, a rough and porous, orienteering surface to obtain the electrodes of electron condensers by making the The surface that will later be covered with a dielectric film, the sitch to the inefficiencies of the metaU, adapts layer, by spraying on, a film, supporting Metal in a molten state according to the principle of Scheop's metal spraying process erected on a stiff surface.
Auch hierbei werden jedoch die aufgesp-ritzten Metallteilchen. mechanisch in erfie,'blichem Maße beansprucht. Da- das Metall in flüssigem oder doch nahezu flüssIgglem Zustand mit großer Gewaft auf die tragende , Oberfläche - aufgesichleudert wird, zeigen die einzelnen Pa#ftikel eihe wenn auch unjegelmäßIge, so. doch im wesentlichen, flache Gestalt, während gerade möglichst aufrecht stehende Vorsprünge erwünsicIlt sind.Here too, however, the split-open metal particles are removed. mechanically stressed to the usual extent. DA, the metal in liquid state or nearly flüssIgglem with great Gewaft to the supporting Surface area - is aufgesichleudert showing individual Pa # ftikel eIHE though unjegelmäßIge do so. but essentially flat shape, while protrusions that are as upright as possible are desirable.
Ein, wesentlich besseres Restiltat wird gemäß der Erfindung dadurch erhaken, daß Metallte-,ilchen in siuspendiertem Zustand auf dien Elektrodenkewn aufgebracht und südann mit seiner Oberfläche zusammengesintert werden. Hierbei ergibt sich noch der Vorteil, daß die Üblichen, sehT dünnen Elektrodenbleche verwendet warden. können, se daß der Materiialverbirauch gering bleibt, der Kondensator leicht ist und die Elektroden aufgarofit werden können. Die Bleche haben z. B. eine: Dicke von werriger aJs i nim.According to the invention, this results in a much better restiltat hook that metal parts, in a suspended state, on the electrode knees applied and then sintered together with its surface. This results in There is also the advantage that the usual, very thin electrode sheets are used be. can, se that the material consumption remains low, the capacitor easily and the electrodes can be heated up. The sheets have z. B. a: Thick von werriger aJs i nim.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE943303X | 1933-11-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE943303C true DE943303C (en) | 1956-05-17 |
Family
ID=3888609
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEN2149D Expired DE943303C (en) | 1933-11-16 | 1934-11-06 | Process for enlarging the surface of electrodes for electrolytic capacitors |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE943303C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1225301B (en) * | 1956-08-06 | 1966-09-22 | Siemens Ag | Process for the production of a tantalum electrode with an enlarged, effective surface for electrolytic capacitors |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB396453A (en) * | 1931-02-10 | 1933-08-10 | Alexander Frederic Fekete | Improvements in electrical insulators, electrical condensers and the like |
CH163672A (en) * | 1931-05-02 | 1933-08-31 | Philips Nv | Electrolytic capacitor. |
-
1934
- 1934-11-06 DE DEN2149D patent/DE943303C/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB396453A (en) * | 1931-02-10 | 1933-08-10 | Alexander Frederic Fekete | Improvements in electrical insulators, electrical condensers and the like |
CH163672A (en) * | 1931-05-02 | 1933-08-31 | Philips Nv | Electrolytic capacitor. |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1225301B (en) * | 1956-08-06 | 1966-09-22 | Siemens Ag | Process for the production of a tantalum electrode with an enlarged, effective surface for electrolytic capacitors |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0003125B1 (en) | Process for the electrolytic etching of a recrystallised aluminium foil and its application | |
DE943303C (en) | Process for enlarging the surface of electrodes for electrolytic capacitors | |
DE3231662C2 (en) | Process for electrochemical etching of aluminum foils | |
DE3612885A1 (en) | METHOD FOR ETCHING CAPACITOR ALUMINUM FILM | |
DE2458079C2 (en) | Process for the production of a magnetic head using thin-film technology | |
DE2450834C3 (en) | Method for aluminizing the inside of the screen pan of a television picture tube | |
DE879128C (en) | Electrodes with a greatly enlarged surface for electrolytic capacitors | |
CH183310A (en) | Process for the manufacture of electrodes for electrolytic capacitors. | |
DE526636C (en) | Electric capacitor | |
DE876728C (en) | Process for processing the surface of electrodes for electrolytic capacitors | |
CH183306A (en) | Process for the manufacture of electrodes for electrolytic capacitors. | |
AT149299B (en) | Electrode system with asymmetrical conductivity. | |
DE736758C (en) | Process for the production of a dry rectifier of the selenium type with a carrier electrode made of light metal | |
DE2036101B2 (en) | METHOD OF MANUFACTURING A DRY ELECTROLYTE CONDENSER WITH A SEMI-CONDUCTIVE LEAD DIOXIDE LAYER | |
DE717683C (en) | Electrode for electrolytic capacitors with chemically roughened surface | |
AT153123B (en) | Process for the production of an electrode system with asymmetrical conductivity. | |
DE595325C (en) | Carrier electrode with valve metal coating, especially for electrolytic capacitors and rectifiers | |
DE735369C (en) | Oxide cathode produced by dispersion with the aid of ultrasonic vibrations | |
AT155563B (en) | Electrolytic capacitor. | |
AT159861B (en) | Aluminum in sheet, wire or tube form and process for its production. | |
AT149200B (en) | Process for processing the surface of electrodes for electrolytic capacitors. | |
DE889807C (en) | Electrical capacitor, the dielectric of which consists of conversion products of the occupancy | |
AT155395B (en) | High vacuum valve tube. | |
DE692123C (en) | Method and device for producing thin tin coatings on strips and sheets | |
DE500414C (en) | Process for the production of insulating layers less than 0.01 mm thick |