DE885449C - Electrolyte for electrolytic capacitors - Google Patents
Electrolyte for electrolytic capacitorsInfo
- Publication number
- DE885449C DE885449C DEB9366D DEB0009366D DE885449C DE 885449 C DE885449 C DE 885449C DE B9366 D DEB9366 D DE B9366D DE B0009366 D DEB0009366 D DE B0009366D DE 885449 C DE885449 C DE 885449C
- Authority
- DE
- Germany
- Prior art keywords
- electrolyte
- electrolytic capacitors
- etched
- anode
- anodes
- 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 10
- 239000003792 electrolyte Substances 0.000 title claims description 10
- CEGOLXSVJUTHNZ-UHFFFAOYSA-K aluminium tristearate Chemical compound [Al+3].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CEGOLXSVJUTHNZ-UHFFFAOYSA-K 0.000 claims description 3
- 229940063655 aluminum stearate Drugs 0.000 claims description 3
- 239000011888 foil Substances 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- FBPFZTCFMRRESA-KVTDHHQDSA-N D-Mannitol Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-KVTDHHQDSA-N 0.000 description 1
- 229930195725 Mannitol Natural products 0.000 description 1
- OTRAYOBSWCVTIN-UHFFFAOYSA-N OB(O)O.OB(O)O.OB(O)O.OB(O)O.OB(O)O.N.N.N.N.N.N.N.N.N.N.N.N.N.N.N Chemical compound OB(O)O.OB(O)O.OB(O)O.OB(O)O.OB(O)O.N.N.N.N.N.N.N.N.N.N.N.N.N.N.N OTRAYOBSWCVTIN-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011874 heated mixture Substances 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 235000010355 mannitol Nutrition 0.000 description 1
- 239000000594 mannitol Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002904 solvent 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
- H01G9/004—Details
- H01G9/022—Electrolytes; Absorbents
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Description
Elektrolyt für Elektrolytkondensatoren Um die Oberfläche der Anode in Elektrolytkondensatoren zu vergrößern, wird die als Anode zumeist verwendete Aluminiumfolie mechanisch aufgerauht oder chemisch geätzt. Dadurch entstehen auf der Oberfläche Vertiefungen, und bei der nachfolgenden Formierung durch elektrischen Strom wird diese vergrößerte Oberfläche gleichmäßig mit der als Dielektrikum wirkenden Oxydschicht bedeckt. Die anodische Aluminiumfolie wird in der Regel mit einer weiteren, aber ungeätzten und nicht formierten, also blanken Aluminiumfolie, die nur als Zuleitung des Stromes zum Elektrolyt dient, unter Zwischenlegen eines Abstandhalters zu einem Winkel aufgerollt. Der Abstandhalter besteht aus Faserstoffen, Papier od. dgl., den man mit einem geeigneten Elektrolyt tränkt und der die negative Belegung des Kondensators darstellt. In den sogenannten trockenen Elektrolytkondensatoren ist der aus geeigneten Salzen, Säuren und Lösungsmitteln zusammengesetzte Elektrolyt ziemlich viskos oder von gallertiger Beschaffenheit. Beim Zusammenbau soll der Elektrolyt möglichst gut die gesamte Oberfläche der Anodenfolie berühren, damit die Kapazität der großen Dielektrikumfläche voll zur Wirkung kommt.Electrolyte for electrolytic capacitors around the surface of the anode In electrolytic capacitors, the anode is mostly used to enlarge Aluminum foil mechanically roughened or chemically etched. This will arise on the surface depressions, and in the subsequent formation by electrical Electricity is this enlarged surface evenly with that acting as a dielectric Oxide layer covered. The anodic aluminum foil is usually covered with another, but unetched and not formed, i.e. bare aluminum foil, which is only used as a supply line of the current to the electrolyte is used, with the interposition of a spacer to one Rolled up angle. The spacer consists of fibers, paper or the like. which one soaks with a suitable electrolyte and which the negative coverage of the Represents capacitor. In the so-called dry electrolytic capacitors is the electrolyte composed of suitable salts, acids and solvents rather viscous or gelatinous in nature. When assembling the electrolyte Touch the entire surface of the anode foil as well as possible to reduce the capacitance the large dielectric surface comes into its own.
In Elektrolytkondensatoren mit geätzten Anoden beobachtet man aber keineswegs eine vergrößerte Kapazität in dem Umfange, wie man sie gegenüber solchen mit blanken Anoden erwarten sollte. Es ist möglich, daß beim Einbau sehr viele kleine Luftblasen an der rauhen geätzten Oberfläche der Anodenfolie sitzenbleiben und auch später beim Betrieb des Kondensators nicht herausgehen.However, one observes in electrolytic capacitors with etched anodes by no means an enlarged capacity to the extent that it is compared with such should expect with bare anodes. It is possible that there will be a large number of small ones during installation Air bubbles on the rough etched surface of the The anode foil remain in place and also do not go out later when operating the capacitor.
Die Kapazitätsausbeute der Elektrolytkondensatoren mit aufgerauhten oder geätzten Anoden wird nun erheblich verbessert, wenn man zum Elektrolyt gemäß der Erfindung einen Zusatz von Aluminiumstearat macht.The capacitance yield of the electrolytic capacitors with roughened or etched anodes is now vastly improved if one goes to the electrolyte according to of the invention makes an addition of aluminum stearate.
In einem normalen Elektrolyt, der aus einer erhitzten Mischung von 9o g Glykol, 40 9 Mannit, 67,5 g Ammoniumpentaborat und 37,5 g Borsäure gewonnen wurde, wurde mit einer geätzten Anode eine fünffache Kapazitätserhöhung gegenüber einer blanken Anode gemessen. Bei Zusatz von a'oio Aluminiumstearat zum Elektrolyt erhielt man hingegen eine Kapazitätserhöhung um den Faktor 5,78. Die Wirkung des genannten Zusatzes ist deshalb so überraschend, weil der gleiche Zusatz bei einem Elektrolytkondensator mit nicht aufgeräuhten oder geätzten Anoden keinerlei kapazitätsverbessernde Wirkung zeigt:In a normal electrolyte, made up of a heated mixture of 90 g of glycol, 40 g of mannitol, 67.5 g of ammonium pentaborate and 37.5 g of boric acid were obtained was compared with an etched anode a five-fold increase in capacity measured on a bare anode. When adding a'oio aluminum stearate to the electrolyte on the other hand, a capacity increase by a factor of 5.78 was obtained. The effect of the That said additive is so surprising because the same additive in one Electrolytic capacitors with non-roughened or etched anodes do not have any capacity-improving properties Effect shows:
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEB9366D DE885449C (en) | 1943-02-16 | 1943-02-16 | Electrolyte for electrolytic capacitors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEB9366D DE885449C (en) | 1943-02-16 | 1943-02-16 | Electrolyte for electrolytic capacitors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE885449C true DE885449C (en) | 1953-08-06 |
Family
ID=6956295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEB9366D Expired DE885449C (en) | 1943-02-16 | 1943-02-16 | Electrolyte for electrolytic capacitors |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE885449C (en) |
-
1943
- 1943-02-16 DE DEB9366D patent/DE885449C/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE885449C (en) | Electrolyte for electrolytic capacitors | |
| DE695509C (en) | Method for curing electrostatic capacitors | |
| DE879572C (en) | Electrolyte for electrolytic capacitors | |
| DE757349C (en) | Electrolyte with additive to keep the viscosity or the power factor constant for electrolytic capacitors | |
| DE758425C (en) | Method of manufacturing an electrolytic capacitor | |
| DE1564666C3 (en) | Process for the production of an aluminum electrolytic capacitor | |
| DE2049098C3 (en) | Electrolyte for electrolytic capacitors | |
| DE717683C (en) | Electrode for electrolytic capacitors with chemically roughened surface | |
| DE762274C (en) | Electrolytic capacitor for high voltages | |
| US2153999A (en) | Electrolytic condenser | |
| DE854439C (en) | Method and device for making recordings on a metallized recording medium | |
| DE896391C (en) | Process for the treatment of etched electrodes for electrolytic capacitors | |
| DE767865C (en) | Process for the production of an electrode with a porous surface for electrolytic capacitors | |
| DE767900C (en) | Electrolyte for electrolytic capacitors | |
| DE521992C (en) | Process for the production of thin foils from electrically insulating material | |
| DE879571C (en) | Process for improving aluminum oxide layers as a dielectric in electrolytic capacitors | |
| DE761838C (en) | Process for the production of electrical connections at the end of capacitors from metallized dielectric strips | |
| DE642336C (en) | Electrical wound capacitor with inserted connection electrodes | |
| DE963537C (en) | Electrolytic capacitor with artificially enlarged electrode surface | |
| DE2061745A1 (en) | Process for the production of an electrode sheet made of aluminum for electrolytic capacitors | |
| DE2836878B1 (en) | Process for the anodic production of hydrophobic oxide layers on aluminum foils | |
| DE1614508C2 (en) | ||
| DE399833C (en) | Process for the production of resistor frames on capacitor coverings | |
| DE714199C (en) | Process for improving the electrical properties of films made of polyvinyl chloride | |
| DE876728C (en) | Process for processing the surface of electrodes for electrolytic capacitors |