GB505998A - Improvements in or relating to the treatment of electrodes for electrolytic devices,such as electrolytic condensers - Google Patents
Improvements in or relating to the treatment of electrodes for electrolytic devices,such as electrolytic condensersInfo
- Publication number
- GB505998A GB505998A GB31924/37A GB3192437A GB505998A GB 505998 A GB505998 A GB 505998A GB 31924/37 A GB31924/37 A GB 31924/37A GB 3192437 A GB3192437 A GB 3192437A GB 505998 A GB505998 A GB 505998A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrodes
- bath
- electrolytic
- foil
- isopropanol
- 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
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 abstract 4
- 239000011888 foil Substances 0.000 abstract 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract 2
- 238000009835 boiling Methods 0.000 abstract 2
- 229910000792 Monel Inorganic materials 0.000 abstract 1
- 239000000956 alloy Substances 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 238000000866 electrolytic etching Methods 0.000 abstract 1
- 238000005530 etching Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000011780 sodium chloride Substances 0.000 abstract 1
- 239000007921 spray Substances 0.000 abstract 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- ing And Chemical Polishing (AREA)
- Cell Electrode Carriers And Collectors (AREA)
Abstract
505,998. Electrolytic etching. DUBILIER CONDENSER CO. (1925), Ltd. Nov. 19, 1937, No. 31924. Convention date, Nov. 19, 1936. [Class 41] [Also in Groups XXII, IV, XIII, and XXIII] Mechanically roughened foil, for use as an electrode in electrolytic condensers &c., may be subsequently chemically or electro-chemically etched. The process may be that described in Specification 467,024. Alternatively, the strip passes from the bath E to a bath G, Fig. 3, of sodium chloride solution and travels between electrodes G<SP>3</SP> connected to the negative lead of a source of current H, while a brush H<SP>1</SP> connected to the positive lead bears on the foil. The electrodes may be formed of the alloy sold under the Registered Trade Mark "Monel." The bath is maintained at boiling point either by the electric current alone or by a separate heater. The strip is then washed by sprays K<SP>1</SP>, passed through a bath M of isopropanol, and dried over an electric heater O<SP>1</SP>. Alternatively, the isopropanol is sprayed on to the foil. The tendency to etch the upper surface to a greater extent than the lower surface may be compensated for by passing the film through the bath closer to the lower electrode G<SP>3</SP>, Fig. 4. The use of electrodes G<SP>4</SP>, G<SP>5</SP>, Fig. 5, comprising series of parallel rods leads to uniform boiling and the free escape of gases. Electrodes R, Fig. 6, or R<SP>1</SP>, Fig. 7, counteract the tendency to excessive etching at the edges.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US505998XA | 1936-11-19 | 1936-11-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB505998A true GB505998A (en) | 1939-05-19 |
Family
ID=21966204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB31924/37A Expired GB505998A (en) | 1936-11-19 | 1937-11-19 | Improvements in or relating to the treatment of electrodes for electrolytic devices,such as electrolytic condensers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB505998A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE948725C (en) * | 1952-07-10 | 1956-09-06 | Western Electric Co | Process for the production of an electrode for electrolytic capacitors from a tantalum foil |
| DE1031891B (en) * | 1952-03-13 | 1958-06-12 | Dr Karl Kilchling | Process for roughening electrodes for electrolytic capacitors |
-
1937
- 1937-11-19 GB GB31924/37A patent/GB505998A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1031891B (en) * | 1952-03-13 | 1958-06-12 | Dr Karl Kilchling | Process for roughening electrodes for electrolytic capacitors |
| DE948725C (en) * | 1952-07-10 | 1956-09-06 | Western Electric Co | Process for the production of an electrode for electrolytic capacitors from a tantalum foil |
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