CN101477898B - Low leakage aluminum electrolysis capacitor working electrolytic solution and preparation thereof - Google Patents
Low leakage aluminum electrolysis capacitor working electrolytic solution and preparation thereof Download PDFInfo
- Publication number
- CN101477898B CN101477898B CN2008102080310A CN200810208031A CN101477898B CN 101477898 B CN101477898 B CN 101477898B CN 2008102080310 A CN2008102080310 A CN 2008102080310A CN 200810208031 A CN200810208031 A CN 200810208031A CN 101477898 B CN101477898 B CN 101477898B
- Authority
- CN
- China
- Prior art keywords
- weight
- electrolyte
- preparation
- capacitor
- electrolytic solution
- 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.)
- Active
Links
Landscapes
- Electric Double-Layer Capacitors Or The Like (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention relates to a working electrolyte for the low electric leakage of an aluminum electrolytic capacitor, and a preparation method thereof. The working electrolyte comprises glycol, ammonium adipate, pure water and 3,4,5-trihydroxybenzoic acid, and the weight percentages are as follows: (74%-86%): (8%-15%): (5%-10%): (0.6%-1.2%). The preparation comprises the following steps: glycol is heated to 80-90 DEG C; 8-15 wt% of ammonium adipate and 5-10 wt% of pure water are added into and mixed with glycol; the mixture is heated to 100-110 DEG C; 0.6-1.2 wt% of 3,4,5-trihydroxybenzoic acid is added and stirred; and then the mixture is cooled to a room temperature, thereby obtaining the aluminum electrolytic capacitor electrolyte. The aluminum electrolytic capacitor made of the electrolyte in the invention has obviously reduced leakage current, thereby improving the working stability of the capacitor.
Description
Technical field
The invention belongs to electrolyte and preparation field thereof, particularly relate to a kind of low leakage aluminum electrolysis capacitor working electrolytic solution and preparation method thereof.
Background technology
To proposing more and more higher requirement in the upper limit working temperature of aluminium electrolytic capacitor, useful life. as be applied in the capacitor of electronic products such as automotive electronics, display, charger, electric ballast, because the ripple current that electric capacity passes through is bigger, self-heating and continuous operation make capacitor be in the operational environment of high temperature for a long time; The high-voltage electrolysis capacitor that is used for electronic products such as Switching Power Supply, electricity-saving lamp, resistance to elevated temperatures requires high.
Working electrolyte for aluminium electrolytic capacitor is the negative electrode of aluminium electrolytic capacitor, its performance plays a decisive role to capacitor performance, existing electrolyte prescription is mainly by solute and solvent composition, and solute is organic carboxyl acid and salt thereof, and solvent has ethylene glycol, butyrolactone, water or its mixture.Adopt this prescription electrolyte aluminium electrolytic capacitor product in use, often because of withstand voltage low, the drum end occurs even explosion phenomenon is arranged, and the upper limit working temperature of this capacitor product only can reach about 85 ℃, can not satisfy the high temperature resistant and wide temperature range of Switching Power Supply and energy-saving lamp electronic product.
Patent 200410051254.2 discloses working electrolyte for aluminium electrolytic capacitor, comprise solvent, solute, anticorrosive with additive and property-modifying additive, anticorrosive is one or more materials that are selected from oxine, sweet mellow wine, phosphate monoester, the organic acid with additive; The constituent of property-modifying additive comprises: polyvinyl alcohol and/or polyethylene glycol, ortho phosphorous acid and/or ammonium hypophosphite, boric acid and/or ammonium pentaborate, and ethylene glycol; In addition, it can also comprise disappear hydrogen agent and waterproof mixture, the high temperature high voltage resistant and the corrosion resistance of aluminium electrolytic capacitor have been improved widely, reduced the generation of hydrogen effectively, thereby prevent that capacitor from producing the drum end even blast, and can prevent capacitor from high temperature hydration taking place and cause it to lose efficacy, adopt the aluminium electrolytic capacitor of above-mentioned Working electrolyte, it can be worked under the 315V-500V rated operational voltage, and upper limit working temperature is 125 ℃.Though invention high temperature high voltage resistant and the generation that has reduced hydrogen reduce the leakage current DeGrain to capacitor.
Summary of the invention
Technical problem to be solved by this invention provides a kind of low leakage aluminum electrolysis capacitor working electrolytic solution and preparation method thereof, and its leakage current of aluminium electrolytic capacitor of being made by electrolyte of the present invention obviously reduces, and has improved the capacitor job stability.
A kind of low leakage aluminum electrolysis capacitor working electrolytic solution of the present invention consists of: ethylene glycol, ammonium adipate, pure water, 3,4, and the 5-trihydroxybenzoic acid, its percentage by weight is: 74%-86%: 8%-15%: 5%-10%: 0.6%-1.2%.
The preparation method of a kind of low leakage aluminum electrolysis capacitor working electrolytic solution of the present invention comprises:
(74-86) weight % ethylene glycol is heated to 80-90 ℃, add the ammonium adipate of (8-15) weight % and (5-10) pure water of weight %, and with its mixing, be heated to 100-110 ℃ again, add 3,4 of (0.6-1.2) weight %, 5-trihydroxybenzoic acid (gallic acid), stir, be cooled to room temperature, make aluminum electrolytic capacitor electrolyte.
Beneficial effect
Its leakage current of aluminium electrolytic capacitor of being made by electrolyte of the present invention obviously reduces, and has improved the capacitor job stability.
Embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used to the present invention is described and be not used in and limit the scope of the invention.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Embodiment 1
A kind of working electrolyte for aluminium electrolytic capacitor proportioning is an ethylene glycol 75
Weight%, ammonium adipate 15
Weight%, pure water 8.8
Heavy Amount%, 3,4,5-trihydroxybenzoic acid (gallic acid) 1.2
Weight%.
75 weight % ethylene glycol are heated to 80-90 ℃, add the ammonium adipate of 15 weight % and the pure water of 8.8 weight %, and with its mixing, be heated to 100-110 ℃ again, add 3,4 of 1.2 weight %, 5-trihydroxybenzoic acid (gallic acid), stir, be cooled to room temperature, make aluminum electrolytic capacitor electrolyte.
Embodiment 2
A kind of working electrolyte for aluminium electrolytic capacitor proportioning is an ethylene glycol 80
Weight%, ammonium adipate 12
Weight%, pure water 7
Weight%, 3,4,5-trihydroxybenzoic acid (gallic acid) 1
Weight%.
Embodiment 3
A kind of working electrolyte for aluminium electrolytic capacitor proportioning is an ethylene glycol 85
Weight%, ammonium adipate 8
Weight%, pure water 6
Weight%, 3,4,5-trihydroxybenzoic acid (gallic acid) 1
Weight%.
Claims (2)
1. low leakage aluminum electrolysis capacitor working electrolytic solution consists of: ethylene glycol, ammonium adipate, pure water, 3,4, and the 5-trihydroxybenzoic acid, its percentage by weight is respectively: 74%-86%: 8%-15%: 5%-10%: 0.6%-1.2%.
2. the preparation method of a low leakage aluminum electrolysis capacitor working electrolytic solution comprises:
With percentage by weight is that the ethylene glycol of 74-86% is heated to 80-90 ℃, the adding percentage by weight is that ammonium adipate and the percentage by weight of 8-15% is the pure water of 5-10%, and with its mixing, be heated to 100-110 ℃ again, adding percentage by weight is 3,4 of 0.6-1.2%, the 5-trihydroxybenzoic acid, stir, be cooled to room temperature, make aluminum electrolytic capacitor electrolyte.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102080310A CN101477898B (en) | 2008-12-29 | 2008-12-29 | Low leakage aluminum electrolysis capacitor working electrolytic solution and preparation thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102080310A CN101477898B (en) | 2008-12-29 | 2008-12-29 | Low leakage aluminum electrolysis capacitor working electrolytic solution and preparation thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101477898A CN101477898A (en) | 2009-07-08 |
| CN101477898B true CN101477898B (en) | 2010-12-15 |
Family
ID=40838583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102080310A Active CN101477898B (en) | 2008-12-29 | 2008-12-29 | Low leakage aluminum electrolysis capacitor working electrolytic solution and preparation thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101477898B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112863878B (en) * | 2021-01-06 | 2022-07-26 | 广州金立电子有限公司 | Low-leakage aluminum electrolytic capacitor working electrolyte |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1183562C (en) * | 1998-10-13 | 2005-01-05 | 松下电器产业株式会社 | Aluminium electrolyte capacitor |
| CN1707710A (en) * | 2005-04-11 | 2005-12-14 | 万裕三信电子(东莞)有限公司 | Aluminium electrolytic capacitor and electrolyte |
| CN1744247A (en) * | 2004-08-30 | 2006-03-08 | 广东风华高新科技股份有限公司 | Aluminium electrolytic capacitor working electrolyte and capacitor obtained thereof |
-
2008
- 2008-12-29 CN CN2008102080310A patent/CN101477898B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1183562C (en) * | 1998-10-13 | 2005-01-05 | 松下电器产业株式会社 | Aluminium electrolyte capacitor |
| CN1744247A (en) * | 2004-08-30 | 2006-03-08 | 广东风华高新科技股份有限公司 | Aluminium electrolytic capacitor working electrolyte and capacitor obtained thereof |
| CN1707710A (en) * | 2005-04-11 | 2005-12-14 | 万裕三信电子(东莞)有限公司 | Aluminium electrolytic capacitor and electrolyte |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101477898A (en) | 2009-07-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101866751A (en) | Temperature-resistant electrolyte for aluminum electrolysis and application thereof | |
| CN101114544A (en) | Working electrolyte for wide temperature high voltage aluminium electrolytic capacitor and method for making same thereof | |
| CN102074365A (en) | High-voltage working electrolyte and preparation method thereof | |
| CN103666403A (en) | Vehicle engine cooling liquid | |
| CN106158380A (en) | A kind of electrolyte of high-pressure aluminum electrolytic capacitor and preparation method thereof | |
| CN102915843B (en) | Wide temperature high voltage aluminium electrolytic capacitor Working electrolyte and preparation method thereof | |
| CN103632850A (en) | High-sparking voltage boron series-free working electrolyte and preparation method thereof | |
| CN104845595A (en) | Non-aqueous propylene glycol composition for automobile engine | |
| CN114231258A (en) | Low-conductivity cooling liquid and preparation method thereof | |
| WO2014023055A1 (en) | Electrolyte for aluminum electrolytic capacitor and aluminum electrolytic capacitor | |
| CN101477899B (en) | Aluminum electrolysis capacitor working electrolyte for energy saving lamp and preparation thereof | |
| CN105140034B (en) | A kind of flame-retardant electrolyte and preparation method thereof | |
| CN101922009A (en) | Formulation of corrosion inhibitor used for inhibiting corrosion of magnesium alloy in automobile engine coolant | |
| CN101477898B (en) | Low leakage aluminum electrolysis capacitor working electrolytic solution and preparation thereof | |
| CN102842431B (en) | Working electrolyte of LED aluminium electrolytic capacitor and preparation method thereof | |
| CN108231419A (en) | A kind of high temperature resistance and the electrolyte of aluminium electrolutic capacitor of high pressure and preparation method thereof | |
| CN101477902B (en) | High temperature durable and wide temperature range aluminum electrolysis capacitor working electrolyte and preparation thereof | |
| CN104241641B (en) | A kind of lead-acid accumulator anode diachylon | |
| CN101840786A (en) | Working electrolyte of aluminum electrolytic capacitor for energy-saving lamp and preparation method thereof | |
| CN101894673B (en) | Aluminum electrolytic capacitor electrolyte and preparation method thereof | |
| CN101477901B (en) | Fire retarding electrolytic solution and preparation thereof | |
| JP3751048B2 (en) | Electrolytic solution and electrochemical device using the same | |
| CN107090276A (en) | A kind of corrosion-resistant antifreeze fluid | |
| CN102723203A (en) | Preparation method of electrolyte for aluminum electrolytic capacitor | |
| CN104517734A (en) | Working electrolyte and preparation method thereof of high-temperature resistant aluminum electrolytic capacitor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |