CN1249062A - Capacitor with dual electricity layer - Google Patents
Capacitor with dual electricity layer Download PDFInfo
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- CN1249062A CN1249062A CN97182001A CN97182001A CN1249062A CN 1249062 A CN1249062 A CN 1249062A CN 97182001 A CN97182001 A CN 97182001A CN 97182001 A CN97182001 A CN 97182001A CN 1249062 A CN1249062 A CN 1249062A
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Abstract
The present invention relates to a capacitor with a dual electric layer, wherein said capacitor comprises an electrode made of a carbon material as well as an electrode made of material containing lead dioxide. This capacitor exhibits improved specific characteristics and has a lower cost.
Description
The present invention relates to electrical engineering, and can be used for producing and have can storing and electric double layer (DEL) capacitor of electromotive power output of high specific power characteristic with high speed.
(for example US 4313084 (1982) and 4713734 (1987), and DE 3210420 (1983)) that the double charge layer capacitor of the electrode that has liquid electrolyte and made by all materials with high specific area is known in the art.When using various active carbons, obtained best result as electrode material.The ratio electric capacity of this capacitor surpasses 2F/cu.cm, use simultaneously sprotic electrolyte can make the operating voltage of capacitor be increased to 2-3V (US 4697224 (1987), Nat.Tech.Report, 180,26, #2, pp.220-230).
Aspect technical spirit and the accessible effect and the present invention immediate be that a kind of DEL capacitor that comprises two electrodes and liquid electrolyte (is that concentration is the alkali metal hydroxide aqueous solution of 3-7 mol, has electrode and non-polarizable electrode of being made by nickel oxide that polarizable (negative) made by carbon fibre material.The maximum voltage of described capacitor equals 1.4V, is respectively 46F/cu.cm and 45J/cu.cm than electric capacity and specific energy, (WO97/07518,1997,1,27)).
Although have the technical scheme that a large amount of being intended to improves the DEL capacitor,, how to increase its specific characteristic and remain a problem demanding prompt solution.Thereby particularly, the ratio electric capacity that can be realized by above-mentioned known capacitor and the value and their cost of specific energy are restricted its application on the transporting equipment of electric driving.
Therefore, the main purpose with basic of the present invention is to realize the high energy density of DEL capacitor and lower cost.
The present invention that above-mentioned purpose discloses has from here realized that its essence is that polarizable capacitance electrode is made by material with carbon element, and non-polarizable electrode is made as the material of active component by the oxide that comprises lead.
Can utilize various electrolyte though have the capacitor of kind electrode combination, preferably utilize the aqueous solution of inorganic acid and their mixture.
Make the specific energy of DEL capacitor be increased and its cost is minimized just because of the solution that discloses above.The increase of specific energy is to be increased to 2.2-2.6V by the operating voltage capacitor, and compares with aqueous slkali by the electric capacity that makes obtainable material with carbon element in acid solution and to increase that 1.2-1.4 doubly realizes.
In addition, the reduction of the cost of DEL capacitor is to realize than the oxide electrode of the lead of the oxide electrode cheapness of nickel by use made in accordance with the present invention.
Below in conjunction with the structure of description of drawings according to DEL capacitor of the present invention.
This capacitor has positive electrode 1, negative electrode 2, current feed 3, isolator 4 and the housing 6 that electrolyte 5 is housed.
By following Example essence of the present invention is described.
The positive electrode that uses in this capacitor (non-polarizable electrode) is by containing plumbous oxide (PbO
2) material make, its physical dimension is 125 * 70 * 0.8mm, and negative electrode is the fiber electrode of being made by activated carbon fiber, its physical dimension is 125 * 70 * 1.21mm.Negative electrode has the ratio electric capacity of 512.3F/g.Negative electrode 2 is equipped with plumbous current feed 3, and total weight is 12.8g, and physical dimension is 125 * 70 * 0.2mm, and negative electrode is included in electric two parts of going up in bag interconnection and that be placed in the thick polypropylene separator of 0.1mm 4.The two-part both sides of negative electrode are suppressed on the surface of positive electrode 1.The aqueous sulfuric acid that has concentration and be 1.25g/cu.cm is as electrolyte.
Capacitor is discharged under the direct current of 2.5A.Discharge voltage is reduced to 0.8V from 2.2V.
Under above-mentioned discharging condition, the specific energy of capacitor is 56.2J/g (270J/cu.cm).The interior resistance of capacitor equals 10.1 * 10
-3Ohm.In whole discharge process, the current potential on the lead oxides electrode that can not polarize is reduced to 1.625V from 1.71V, that is, in fact remain unchanged.
The capacitor of Ti Chuing makes it possible to achieve the connection in series-parallel connection of a plurality of capacitors herein, and realizes the various capacitor groups of preparation on this basis.
The discharge voltage range of utilization expansion can be so that the specific energy of capacitor increases.
Above-mentioned example is illustrative, is not construed as limiting the invention.Thereby those skilled in the art can make various changes and remodeling.Thereby the embodiment of the capacitor of Ti Chuing can implement herein, and wherein electrolyte is constrained between the electrode by means of surface tension, and making does not need to be used to fill electrolytical special container or housing.
Wherein use inorganic aqueous acid as electrolytical embodiment although understand one, still, other electrolyte also can use, for example moisture inorganic salts, the thixotropic admixture of acid and salt, and the solid electrolyte of proton conductive (film).
All these changes and remodeling all are believed to comprise in the scope of the present invention as the feature of following appended claim.
Claims (4)
1. double charge layer capacitor is characterized in that it comprises:
Basically the polarizable electrode of making by material with carbon element;
Basically the non-polarizable electrode of making by the material that contains plumbous oxide; And electrolyte.
2. double charge layer capacitor is characterized in that it comprises:
Basically the polarizable electrode of making by material with carbon element;
Basically the non-polarizable electrode of making by the material that contains plumbous oxide;
Electrolyte; And
Described electrode and described electrolytical housing wherein are housed.
3. as the described capacitor of the arbitrary claim in front, it is characterized in that it comprises the isolator that is used for isolated electrode.
4. as the described capacitor of the arbitrary claim in front, it is characterized in that electrolyte is the aqueous solution of inorganic acid and composition thereof basically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB971820015A CN1183563C (en) | 1997-11-11 | 1997-11-11 | Capacitor with dual electricity layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB971820015A CN1183563C (en) | 1997-11-11 | 1997-11-11 | Capacitor with dual electricity layer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1249062A true CN1249062A (en) | 2000-03-29 |
| CN1183563C CN1183563C (en) | 2005-01-05 |
Family
ID=5178248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB971820015A Expired - Fee Related CN1183563C (en) | 1997-11-11 | 1997-11-11 | Capacitor with dual electricity layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1183563C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100470693C (en) * | 2001-05-03 | 2009-03-18 | C&T公司 | Electric double-layer capacitor |
| CN101847515A (en) * | 2010-02-26 | 2010-09-29 | 上海奥威科技开发有限公司 | Lead-based super capacitor |
-
1997
- 1997-11-11 CN CNB971820015A patent/CN1183563C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100470693C (en) * | 2001-05-03 | 2009-03-18 | C&T公司 | Electric double-layer capacitor |
| CN101847515A (en) * | 2010-02-26 | 2010-09-29 | 上海奥威科技开发有限公司 | Lead-based super capacitor |
| CN101847515B (en) * | 2010-02-26 | 2011-12-21 | 上海奥威科技开发有限公司 | Lead-based super capacitor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1183563C (en) | 2005-01-05 |
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Owner name: ELTON JOINT VENTURE CORPORATION Free format text: FORMER OWNER: SECRET JOINT-STOCK COMPANY (ESMA) Effective date: 20140122 Owner name: YINGKAER-M CO., LTD. Free format text: FORMER OWNER: EKSIN NPP Effective date: 20140122 |
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