GB894725A - Improvements in or relating to electrolytic capacitors - Google Patents
Improvements in or relating to electrolytic capacitorsInfo
- Publication number
- GB894725A GB894725A GB2774859A GB2774859A GB894725A GB 894725 A GB894725 A GB 894725A GB 2774859 A GB2774859 A GB 2774859A GB 2774859 A GB2774859 A GB 2774859A GB 894725 A GB894725 A GB 894725A
- Authority
- GB
- United Kingdom
- Prior art keywords
- silver
- film
- capacitor
- electrode
- hydroxide
- 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 abstract 7
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract 7
- 229910052709 silver Inorganic materials 0.000 abstract 6
- 239000004332 silver Substances 0.000 abstract 6
- -1 silver halide Chemical class 0.000 abstract 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract 2
- 230000001464 adherent effect Effects 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 abstract 2
- NDVLTYZPCACLMA-UHFFFAOYSA-N silver oxide Chemical compound [O-2].[Ag+].[Ag+] NDVLTYZPCACLMA-UHFFFAOYSA-N 0.000 abstract 2
- JHJLBTNAGRQEKS-UHFFFAOYSA-M sodium bromide Chemical compound [Na+].[Br-] JHJLBTNAGRQEKS-UHFFFAOYSA-M 0.000 abstract 2
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 abstract 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 abstract 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 abstract 1
- 229910052783 alkali metal Inorganic materials 0.000 abstract 1
- 150000001340 alkali metals Chemical class 0.000 abstract 1
- 239000001099 ammonium carbonate Substances 0.000 abstract 1
- 235000012501 ammonium carbonate Nutrition 0.000 abstract 1
- 239000000908 ammonium hydroxide Substances 0.000 abstract 1
- 238000007743 anodising Methods 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 238000005868 electrolysis reaction Methods 0.000 abstract 1
- 150000004820 halides Chemical class 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 150000002739 metals Chemical class 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 150000002978 peroxides Chemical class 0.000 abstract 1
- 229910052700 potassium Inorganic materials 0.000 abstract 1
- 229910001923 silver oxide Inorganic materials 0.000 abstract 1
- 229910000108 silver(I,III) oxide Inorganic materials 0.000 abstract 1
- 229910052708 sodium Inorganic materials 0.000 abstract 1
- 229910000029 sodium carbonate Inorganic materials 0.000 abstract 1
- 235000017550 sodium carbonate Nutrition 0.000 abstract 1
- 239000011780 sodium chloride Substances 0.000 abstract 1
- 229910052715 tantalum Inorganic materials 0.000 abstract 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 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
- H01G9/042—Electrodes or formation of dielectric layers thereon characterised by the material
- H01G9/0425—Electrodes or formation of dielectric layers thereon characterised by the material specially adapted for cathode
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
894,725. Electrolytic capacitors; anodizing metals. HUNT (CAPACITORS) Ltd., A. H. July 28, 1960 [Aug. 13, 1959; Jan. 7, 1960], Nos. 27748/59 and 649/60. Classes 37 and 41. An electrolytic capacitor contains a silver cathode electrode which bears on its electrolyte-contacting face a thin adherent film of silver oxide or peroxide with or without silver halide (e.g. Ag Br) in addition, the film preferably containing at least 15% oxide ; the capacitor anode may comprise filmed tantalum. The adherent film of the silver electrode, which may be silver foil with the film on both faces as in a semi-wet type of capacitor, a silver container coated on its inside with the film as in a wet type of capacitor, or silver gauze, may be formed electrolytically by making the electrode, either the silver foil or the silver container of the bath, the anode during the electrolysis therein of an aqueous solution of an alkali metal (e.g. Na or K) carbonate, bicarbonate or hydroxide, or ammonium carbonate or hydroxide, or mixtures thereof, with or without a soluble halide (e.g. NaBr), using a current density of not more than 20 m.a./sq. inch. Examples of baths are (i) 10% Na2CO3 + 2% NaCl; and (ii) 200 g/l. KOH + 30 g/l. KBr.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2774859A GB894725A (en) | 1959-08-13 | 1959-08-13 | Improvements in or relating to electrolytic capacitors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2774859A GB894725A (en) | 1959-08-13 | 1959-08-13 | Improvements in or relating to electrolytic capacitors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB894725A true GB894725A (en) | 1962-04-26 |
Family
ID=10264635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2774859A Expired GB894725A (en) | 1959-08-13 | 1959-08-13 | Improvements in or relating to electrolytic capacitors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB894725A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4713731A (en) * | 1982-05-03 | 1987-12-15 | Standard Oil Company | Double layer capacitor |
| US20230094064A1 (en) * | 2020-03-19 | 2023-03-30 | Biotronik Se & Co. Kg | Capacitor with conductive adhesion layer |
-
1959
- 1959-08-13 GB GB2774859A patent/GB894725A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4713731A (en) * | 1982-05-03 | 1987-12-15 | Standard Oil Company | Double layer capacitor |
| US20230094064A1 (en) * | 2020-03-19 | 2023-03-30 | Biotronik Se & Co. Kg | Capacitor with conductive adhesion layer |
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