CN101532158B - Bar-shaped combination electrode in aluminum foil formation energy-endowing groove and preparation method thereof - Google Patents
Bar-shaped combination electrode in aluminum foil formation energy-endowing groove and preparation method thereof Download PDFInfo
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- CN101532158B CN101532158B CN2009101275636A CN200910127563A CN101532158B CN 101532158 B CN101532158 B CN 101532158B CN 2009101275636 A CN2009101275636 A CN 2009101275636A CN 200910127563 A CN200910127563 A CN 200910127563A CN 101532158 B CN101532158 B CN 101532158B
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Abstract
The invention discloses a bar-shaped combination electrode in aluminum foil formation energy-endowing groove and preparation method thereof. The bar-shaped combination electrode is characterized in that plate electrodes of 1500*520mm in the energy-endowing groove are separated to more than two bar-shaped electrode plates of 50*120mm with distance of 10mm, two ends of the each two bar-shaped electrode plate are welded on stainless steel material like ladder, and holes with different specifications are arranged on the bar-shaped electrode plates according to distribution rule of current density on the aluminum foil. The invention has advantages that the bar-shaped combination electrode not only can shunt, but also can make electrolyte between and round the electrodes fully cycle and temperature and concentration uniform, so that current density on the aluminum foil is reasonably distributed, and temperature and concentration of the electrolyte is easily to control in process range, thereby improving oxide film structure, increasing density, reducing oxygen omission in the film, and increasing performances of the aluminum foil.
Description
Technical field
The present invention relates to be used for the electrode that aluminium electrolutic capacitor forms deielectric-coating (hereinafter referred to as oxide film), bar-shaped combination electrode in particularly a kind of aluminum foil formation energy-endowing groove and preparation method thereof.
Background technology
The electrode of aluminium electrolutic capacitor is an aluminium foil.Deielectric-coating (the γ that the stability of electrical condenser, electrical property (leakage current, tg δ loss angle etc.), life-span and aluminium foil surface form
/-AL
2O
3) the quality quality is directly proportional.The deielectric-coating that aluminium foil surface forms is with γ
/-AL
2O
3It is main anode oxide film.This oxidation is film formed even more, fine and close more, and the electrical property of aluminium foil is good more, and intensity also can be improved.In order to obtain the oxide film of aluminium foil surface, thereby usual method is to apply certain electric weight to carry out electrochemistry and energize and form needed anode oxide film corroding aluminium foil in certain electrolytic solution, is referred to as aluminium foil and changes into.
The aluminium foil chemical synthesizing method is to make to energize in the certain electrolytic solution of aluminium foil immersion in energy-endowing groove to change into.Aluminium foil is between the battery lead plate of energy-endowing groove, applies electric current on the battery lead plate of energy-endowing groove aluminium foil is carried out electrochemical oxidation film formation.By traditional chemical synthesizing method, this moment, aluminium foil entered that the initial current density of energy-endowing groove is bigger (can to surpass 100mA/cm
2), thereby make the formation velocity ratio of oxide film very fast, oxide film generates too anxious; Simultaneously the spacing of battery lead plate has only 160～180mm, will inevitably cause like this that local reaction is very violent, the temperature of electrolytic solution, the scope that concentration all can depart from technique initialization, this moment aluminium foil itself temperature also than higher.Such result causes finally that the density of oxide film is loose, the oxygen vacancy in the film is more serious, what test showed is exactly that specific volume descends, pressure rising time is elongated, leakage current increases, the intensity variation, and the specific volume behind the poach, pressure rising time, leakage current also bigger variation can occur.
In order to improve the structure of oxide film, the oxygen vacancy in the minimizing film is mostly taked to optimize the foreign matter content of chemical synthesis technology, control electrolytic solution or is covered with masking shield at electrode plate surface to improve the over-all properties of aluminium foil.These measures can both be played a role to a great extent, but can not make the reasonable distribution of current density on aluminium foil in the energy-endowing groove better, and the temperature of electrolytic solution, concentration can not tend towards stability to reach the required claimed range of technology.
Summary of the invention
The objective of the invention is provides bar-shaped combination electrode in a kind of aluminum foil formation energy-endowing groove and preparation method thereof for overcoming the deficiencies in the prior art, this strip compound electrode can make aluminium foil (especially starting stage) current density in formation process be tending towards rationalizing, electrolytic solution and the circulation and the energy exchange of electrolytic solution on every side between simultaneously can intensifier electrode, temperature, concentration in the energy-endowing groove are tended towards stability, thereby improve the oxide film structure, increase density, reduce the oxygen vacancy in the film, improve every performance of aluminium foil.
Strip compound electrode in a kind of aluminum foil formation energy-endowing groove of the present invention is combined by the strip electrode plate more than 2, and its preparation method is:
Strip shaped electric poles plate with the battery lead plate of 1500 * 520mm in the energy-endowing groove, 50 * 120mm that to be separated into 2 above spacings be 10mm, be welded on the stainless material as the ladder two ends, again according to the regularity of distribution of current density on aluminium foil, on the strip shaped electric poles plate, stamp the hole of different size, the diameter of hole is 2～18mm, the hole of first combined electrical pole plate from top to bottom, from large to small, the hole on second adjacent combined electrical pole plate is from top to bottom, from large to small.
Advantage of the present invention is: the strip compound electrode not only can play the effect of shunting, but also electrolytic solution between the electrode and electrolytic solution are on every side fully circulated, make temperature, concentration even, thereby guaranteed the reasonable distribution of current density on aluminium foil, the temperature of electrolytic solution, concentration also are easy to be controlled within the processing range, thereby improve the oxide film structure, increase density, reduce the oxygen vacancy in the film, improve every performance of aluminium foil.
This strip compound electrode shows through test of many times: the over-all properties of aluminium foil is greatly improved, thereby has guaranteed the stability of aluminium electrolutic capacitor performance.
Description of drawings
Fig. 1 is the structural representation of strip compound electrode of the present invention.
Among the figure: 1. the hole on the strip shaped electric poles lath 2. strip shaped electric poles plates
Embodiment
The invention will be further elaborated below in conjunction with the drawings and specific embodiments.
Strip compound electrode of the present invention is that first battery lead plate with 1500 * 520mm in the energy-endowing groove is separated into 25 strip battery lead plate bars 1 that spacing is 50 * 120mm of 8～12mm, be welded on the stainless material as the ladder two ends, again according to the regularity of distribution of current density on aluminium foil, (current density is big more to stamp diameter and be the hole 2 of 2～18mm on strip shaped electric poles lath 1, the aperture is more little), the hole of first combined electrical pole plate from top to bottom, from large to small, hole on second adjacent combined electrical pole plate from top to bottom, from large to small, form combination strip shaped electric poles plate, add electrolytic solution in the energy-endowing groove, aluminium foil places between the strip combined electrical pole plate.
This strip compound electrode once carried out the contrast experiment that changes into of 530VF, 660VF, 730VF respectively with same process.The etched foil that experiment is adopted is many and a light paper tinsel (115 μ m) of Guidong, Guangxi electronics technology company limited; The leakage current test is the 500A intelligence TV tester that the two letters in Yangzhou are produced.Two kinds of methods of the testing method of leakage current: first kind: behind the constant voltage 180S with reading leakage current behind the operating voltage constant voltage 60S; Second kind: aluminium foil boosted to behind the 0.9VF read leakage current behind the voltage constant voltage 180S with 0.9VF.(temperature is 85 ℃) contrast scheme: a kind of is to change into by the traditional electrode plate structure; Another kind changes into by strip combined electrical pole plate of the present invention exactly.The experimental result division is as follows:
530VF changes into comparative test result
660VF changes into comparative test result
730VF changes into comparative test result
By above test-results as can be known: the strip combined electrode structure can make the comprehensive electrochemical properties of aluminium foil be greatly improved, thereby has guaranteed the stability of aluminium electrolutic capacitor performance.
Claims (2)
1. the preparation method of the bar-shaped combination electrode in the aluminum foil formation energy-endowing groove, it is characterized in that: with the strip shaped electric poles plate of the battery lead plate of 1500 * 520mm in the energy-endowing groove, 50 * 120mm that to be separated into 2 above spacings be 8～12mm, be welded on the stainless material as the ladder two ends, according to the regularity of distribution of current density on aluminium foil, the hole of stamping different size on the strip shaped electric poles plate forms again; Hole diameter on the described strip shaped electric poles plate is 2～18mm, its distribution mode be first combined electrical pole plate hole from top to bottom, from large to small, the hole on second adjacent combined electrical pole plate is from top to bottom, from large to small.
2. use the strip compound electrode of preparation method's preparation of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101275636A CN101532158B (en) | 2008-12-31 | 2009-03-14 | Bar-shaped combination electrode in aluminum foil formation energy-endowing groove and preparation method thereof |
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|---|---|---|---|
| CN200810107450 | 2008-12-31 | ||
| CN200810107450.5 | 2008-12-31 | ||
| CN2009101275636A CN101532158B (en) | 2008-12-31 | 2009-03-14 | Bar-shaped combination electrode in aluminum foil formation energy-endowing groove and preparation method thereof |
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| CN101532158A CN101532158A (en) | 2009-09-16 |
| CN101532158B true CN101532158B (en) | 2010-08-04 |
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| JP5981297B2 (en) * | 2012-10-17 | 2016-08-31 | 大同メタル工業株式会社 | Manufacturing method of sliding bearing and Sn-based overlay of sliding bearing |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1316552A (en) * | 2000-03-21 | 2001-10-10 | 富士胶片株式会社 | Anodic oxidation device of aluminium material |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1316552A (en) * | 2000-03-21 | 2001-10-10 | 富士胶片株式会社 | Anodic oxidation device of aluminium material |
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Effective date of registration: 20220810 Address after: 834034 no.18-032, Industrial Avenue, huyanghe Industrial Park, Xinjiang Uygur Autonomous Region Patentee after: Xinjiang guangtou Guidong Electronic Technology Co.,Ltd. Address before: 542800 No. 1, Hezhou Avenue, Hezhou, the Guangxi Zhuang Autonomous Region Patentee before: GUANGXI HEZHOU GUIDONG ELECTRONIC TECHNOLOGY Co.,Ltd. |