DE878417C - Electrolyte, especially for electrolytic capacitors - Google Patents
Electrolyte, especially for electrolytic capacitorsInfo
- Publication number
- DE878417C DE878417C DES16208D DES0016208D DE878417C DE 878417 C DE878417 C DE 878417C DE S16208 D DES16208 D DE S16208D DE S0016208 D DES0016208 D DE S0016208D DE 878417 C DE878417 C DE 878417C
- Authority
- DE
- Germany
- Prior art keywords
- electrolyte
- mol
- electrolytic capacitors
- ammonia
- glycol
- 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
- 239000003792 electrolyte Substances 0.000 title claims description 11
- 239000003990 capacitor Substances 0.000 title claims description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 12
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 12
- 229910021529 ammonia Inorganic materials 0.000 claims description 6
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 6
- 239000004327 boric acid Substances 0.000 claims description 6
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 2
- 238000002425 crystallisation Methods 0.000 description 4
- 230000008025 crystallization Effects 0.000 description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 150000005846 sugar alcohols Polymers 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)
- Electric Double-Layer Capacitors Or The Like (AREA)
Description
Elektrolyt, insbesondere für elektrolytische Kondensatoren Es ist bekannt, einen Elektrolyt, insbesondere für elektrolytische Kondensatoren derart herzustellen, .daß man ein Ausgangsgemisch, welches aus einem mehrwertigen Alkohol, wie Glycerin oder Glykol, einer schwachen Säure, wie Borsätre, und Ammoniak, vorzugsweise in Form von Ammoniakwasser besteht, einer Wärmebehan#dlung, insbesondere über ioo' C, vorteilhaft bis etwa 140' C, unterzieht. Es hat sich nun gezeigt, daß solche Elektrolyte beim spannungslosen Lagern häufig kristallisieren. Diese Kristallisation wird für den an damit hergestellten Kondensatoren auftretenden Kapazitätsabfall bei spannungslosem Lagern verantwortlich gemacht.Electrolyte, especially for electrolytic capacitors It is known to produce an electrolyte, especially for electrolytic capacitors, in such a way that a starting mixture consisting of a polyhydric alcohol such as glycerol or glycol, a weak acid such as boric acid and ammonia, preferably in the form consists of ammonia water, subjecting it to a heat treatment, in particular above 100 ° C., advantageously up to about 140 ° C. It has now been shown that such electrolytes often crystallize when stored without tension. This crystallization is responsible for the drop in capacitance that occurs in capacitors produced with it when the device is stored without voltage.
Die vorliegende Erfindung bezieht sich nun auf einen Elektrolyt, welcher aus den eingangs erwä!hnten Bestandteilen aufgebaut ist, und bezweckt, eine Kristallisation bei spannungslosem Laggern zu vermeiden. Es hat sich nämlich gezeigt, daß diese Kristallisation vermieden werden kann, wenn bestimmte Mengenverhältnisse der Bestandteile eingehalten werden.The present invention now relates to an electrolyte which is built up from the components mentioned at the outset and aims at crystallization to be avoided with de-energized storage. It has been shown that this Crystallization can be avoided if certain proportions of the components be respected.
Gemäß der Erfindung wird dies dadurch erreicht, daß der Elektrolyt auf etwa 1,4 Mol Glykol etwa i Mol Borsäure und etwa 1/2 Mol Ammoniak enthält. Der Elektrolyt wird gemäß der Erfindung aus den angegebenen Komponenten gemischt und vorzugsweise bis auf eine Temperatur von etwa 138' C gebracht. Es hat sich gezeigt, daß das Optim-um unmittelbar bei den angegebenen Werten von 1,4 Mol Glykol auf i Mol Borsäure und 1/2 Mol Ammoniak liegt. Ein solcher Elektrolyt zeigte auch bei längerem spannungslosen La,-ein keine Kristallisationserscheinunggen.According to the invention, this is achieved in that the electrolyte contains about 1 mole of boric acid and about 1/2 mole of ammonia for about 1.4 moles of glycol. According to the invention, the electrolyte is mixed from the specified components and preferably brought to a temperature of about 138 ° C. It has been shown that the Optim-um is directly at the stated values of 1.4 mol of glycol to 1 mol of boric acid and 1/2 mol of ammonia. Such an electrolyte did not show any crystallization phenomena even after a prolonged period of de-energized La, -ein.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES16208D DE878417C (en) | 1942-01-25 | 1942-01-25 | Electrolyte, especially for electrolytic capacitors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES16208D DE878417C (en) | 1942-01-25 | 1942-01-25 | Electrolyte, especially for electrolytic capacitors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE878417C true DE878417C (en) | 1953-06-01 |
Family
ID=7475090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DES16208D Expired DE878417C (en) | 1942-01-25 | 1942-01-25 | Electrolyte, especially for electrolytic capacitors |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE878417C (en) |
-
1942
- 1942-01-25 DE DES16208D patent/DE878417C/en not_active Expired
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