DE753854C - Process for the simultaneous electrolytic roughening and / or formation of several electrodes according to the series system - Google Patents
Process for the simultaneous electrolytic roughening and / or formation of several electrodes according to the series systemInfo
- Publication number
- DE753854C DE753854C DES134164D DES0134164D DE753854C DE 753854 C DE753854 C DE 753854C DE S134164 D DES134164 D DE S134164D DE S0134164 D DES0134164 D DE S0134164D DE 753854 C DE753854 C DE 753854C
- Authority
- DE
- Germany
- Prior art keywords
- formation
- vol
- series system
- electrodes
- electrodes according
- 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
- 238000007788 roughening Methods 0.000 title claims description 10
- 238000000034 method Methods 0.000 title claims description 9
- 230000015572 biosynthetic process Effects 0.000 title claims description 3
- 239000003990 capacitor Substances 0.000 claims description 2
- 239000003792 electrolyte Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 230000005518 electrochemistry Effects 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 238000005530 etching Methods 0.000 description 6
- 239000011888 foil Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical compound [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 150000002366 halogen compounds Chemical class 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- VKJKEPKFPUWCAS-UHFFFAOYSA-M potassium chlorate Chemical compound [K+].[O-]Cl(=O)=O VKJKEPKFPUWCAS-UHFFFAOYSA-M 0.000 description 1
- 239000011833 salt mixture Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000011780 sodium chloride Substances 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
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F3/00—Electrolytic etching or polishing
- C25F3/02—Etching
- C25F3/04—Etching of light metals
-
- 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
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/0438—Processes of manufacture in general by electrochemical processing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating Methods And Accessories (AREA)
Description
Verfahren zur gleichzeitigen elektrolytischen Aufrauhung und/oder Formierung mehrerer Elektroden nach denn Seriensystem Es ist ein Verfahren zur Aufrauhung der Oberfläche einer aus Aluminium bestehenden Elektrode für elektrolytische Kondensatoren bekanntgeworden, bei welchem die Vergrößerung der Elektrodenoberfläche durch eine elektrolytische Aufrauhung erzielt wird, vorzugsweise dadurch, daß Salz- und Säuregemische oder Salzgemische angewendet werden, welche das Elektrodenmetall im stromlosen Zustand der Ätzanlage gar nicht oder nur schwach angreifen.Process for simultaneous electrolytic roughening and / or Formation of several electrodes according to the serial system It is a roughening process the surface of an electrode made of aluminum for electrolytic capacitors become known, in which the enlargement of the electrode surface by a electrolytic roughening is achieved, preferably in that salt and acid mixtures or salt mixtures are used, which the electrode metal in the currentless state the etching system does not attack at all or only weakly.
Bei der Verwendung von Aluminiumelektroden werden vorzugsweise Halogenverbindungen, wie Aluminiumchlorid, Natriumchlorid, Kaliumbromid, Kaliumchlorat od. dgl., allein oder im gegenseitigen Gemisch oder im Gemisch mit Säure, z. B. Salzsäure, verwendef. Hierbei bildet im allgemeinen die Elektrode, welche aufgerauht werden soll, den Pluspol.When using aluminum electrodes, halogen compounds are preferred, such as aluminum chloride, sodium chloride, potassium bromide, potassium chlorate or the like, alone or in a mutual mixture or in a mixture with acid, e.g. B. hydrochloric acid, use. In this case, the electrode which is to be roughened generally forms the Positive pole.
Beim Arbeiten nach diesem Verfahren hat sich gezeigt, daß die bei der Ätzung angewandte Strommenge von ausschlaggebender Bedeutung für den Grad der Aufrauhung ist.When working according to this method it has been shown that the at The amount of electricity applied to the etching is of decisive importance for the degree of Roughening is.
Oftmals ist jedoch eine Steigerung der Ätzstromdichte zwecks Erhöhung der Durchlaufzeit infolge der beschränkten Stromleistung des vorhandenen Generators nicht möglich. Gemäß der Erfindung wird eine Steigerung des Foliendurchlasses dadurch erreicht, daß unter Verwendung des an sich bekannten Seriensystems, bei dem der elektrische Strom die in einem Ätzmittel bzw. in einem Formierungselektrolyten von°inander getrennten, räumlich parallel zu°lnander angeordneten Elektroden im wesentlichen senkrecht zu der zu behandelnden Elelztrod,enoberfläche nacheinander durchfließt, die Räume zwischen den einzelnen Elektroden durch Verwendung von isolierenden Blendenanordnungen elektrisch abgesperrt sind. Hierdurch wird das sonst bei Verwendung des Seriensystems zu befürchtende Auftreten von Nebenschlüssen auf einfache Weise verhindert. Dieses Verfahren ist nicht nur für die Aufrauhung von Elektroden, sondern auch für die Vorformierung von Elektroden anwendbar.However, it is often necessary to increase the etching current density for the purpose of increasing it the lead time due to the limited power output of the existing generator not possible. According to the invention, there is an increase in the film permeability achieved in that using the series system known per se, at that of the electric current in an etchant or in a forming electrolyte of electrodes which are separated from one another and spatially parallel to one another in the one after the other, essentially perpendicular to the surface of the Elelztrod to be treated flows through the spaces between the individual electrodes by using insulating Aperture arrangements are electrically locked. This will otherwise be the case when using the occurrence of shunts to be feared in the series system in a simple manner prevented. This procedure is not just for roughening electrodes, but can also be used for preforming electrodes.
Weitere Einzelheiten des gekennzeichneten Verfahrens gehen aus der nachfolgenden Beschreibung der Zeichnung hervor.Further details of the marked procedure can be found in the following description of the drawing.
In der Zeichnung ist schematisch die Schaltungsanordnung dargestellt.The circuit arrangement is shown schematically in the drawing.
Es sind bei dieser Anordnung acht parallel zueinander verlaufende Aluminiumbänder i vorgesehen. Die Abb. i ist als Draufsicht dargestellt. Mit 2 ist eine kathodische Zuführung und mit 3 eine anodische Zuführung bezeichnet. Diese Zuführungselektroden 2 und 3 sind feststehend angeordnet und bestehen zweckmäßig aus Graphit oder einem anderen von der Ätzlösung nicht angreifbaren Stoff. Die Räume zwischen den einzelnen zu ätzenden Elektroden i und den Graphitelektroden 2 und 3 werden sorgfältig von Blendenanordnungen .4 abgegrenzt. Werden Aluminiumfolien geätzt, so empfiehlt es sich, eine Anordnung nach Abb. -2 zu treffen. Die dort dargestellten Blenden 4 weisen durch ihre Einkerbungen eine sog. Labyrinthdichtung für die fortlaufenden Aluminiumbänder 5 auf. Die beschriebenen Anordnungen können in einem entsprechenden Trog 6 untergebracht werden, welcher mit einer Ätzlösung gefüllt ist. Wird nunmehr das Ätzbad unter Strom gesetzt, so fließt dieser von der kathodischen Elektrode 2 zu der ersten rechten Aluminiumfolie i und bewirkt eine Aufrauhung der anodisch geschalteten Seite der rechten Folie. Der Strom wird durch sämtliche Kammern weitergeleitet, wobei alle Folien attf der einen, nämlich der Plusseite geätzt «-erden. Zur Erreichung einer völligen Aufrauhung kann entweder eine Umpolung des Bades stattfinden oder aber die Folien durchlaufen ein zweites Bad bzw. dasselbe Bad derart, daß nunmehr die aufgerauhte Seite als kathodische Belegung des Bades geschaltet wird. Auch ist es möglich, durch Wechselstrom niedriger Frequenz nach dieser Anordnung beide Seiten gleichzeitig aufzurauhen.In this arrangement there are eight parallel to each other Aluminum strips i provided. Fig. I is shown as a top view. With 2 is a cathodic lead and 3 denotes an anodic lead. These Feed electrodes 2 and 3 are fixed and are expedient made of graphite or another substance that cannot be attacked by the etching solution. The rooms between the individual electrodes to be etched i and the graphite electrodes 2 and 3 are carefully delimited from aperture arrangements .4. Will aluminum foils etched, it is advisable to make an arrangement as shown in Fig. -2. The ones shown there Diaphragms 4 have a so-called labyrinth seal for the continuous through their notches Aluminum bands 5 on. The arrangements described can be in a corresponding Trough 6 are accommodated, which is filled with an etching solution. Will now If the etching bath is energized, it flows from the cathodic electrode 2 to the first right aluminum foil i and causes a roughening of the anodic switched side of the right slide. The current is passed through all chambers, whereby all foils are etched on one side, namely the plus side. To achieve A complete roughening can either take place a reversal of the polarity of the bath or but the foils pass through a second bath or the same bath in such a way that now the roughened side is switched as a cathodic coating of the bath. Also is it is possible by alternating current of low frequency after this arrangement both sides roughening at the same time.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES134164D DE753854C (en) | 1938-10-08 | 1938-10-08 | Process for the simultaneous electrolytic roughening and / or formation of several electrodes according to the series system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES134164D DE753854C (en) | 1938-10-08 | 1938-10-08 | Process for the simultaneous electrolytic roughening and / or formation of several electrodes according to the series system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE753854C true DE753854C (en) | 1953-08-03 |
Family
ID=7539627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DES134164D Expired DE753854C (en) | 1938-10-08 | 1938-10-08 | Process for the simultaneous electrolytic roughening and / or formation of several electrodes according to the series system |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE753854C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1221075B (en) * | 1956-06-16 | 1966-07-14 | Siemens Ag | Arrangement for the electrolytic surface treatment of an essentially monocrystalline, metallically contacted semiconductor element with pn transition |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH128513A (en) * | 1926-01-27 | 1928-11-01 | Aluminium Ind Ag | Process for the electrolytic production of pure aluminum from metallic goods containing aluminum. |
-
1938
- 1938-10-08 DE DES134164D patent/DE753854C/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH128513A (en) * | 1926-01-27 | 1928-11-01 | Aluminium Ind Ag | Process for the electrolytic production of pure aluminum from metallic goods containing aluminum. |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1221075B (en) * | 1956-06-16 | 1966-07-14 | Siemens Ag | Arrangement for the electrolytic surface treatment of an essentially monocrystalline, metallically contacted semiconductor element with pn transition |
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