CN102842432A - Making method for anode body of electrolytic capacitor - Google Patents
Making method for anode body of electrolytic capacitor Download PDFInfo
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- CN102842432A CN102842432A CN2012103178469A CN201210317846A CN102842432A CN 102842432 A CN102842432 A CN 102842432A CN 2012103178469 A CN2012103178469 A CN 2012103178469A CN 201210317846 A CN201210317846 A CN 201210317846A CN 102842432 A CN102842432 A CN 102842432A
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Abstract
The invention discloses a making method for an anode body of an electrolytic capacitor. The making method is characterized by comprising the following steps of: 1) mixing tantalum powder or niobium oxide with an additive and a solvent so as to obtain an anode body block, wherein the additive is paraffin wax, stearic acid, camphor, benzoic acid or sodium benzoate; and the solvent is gasoline, methyl chloroform, alcohol or acetone; 2) immerging the anode body block into the alcohol, the acetone or dichloromethane; 3) washing the anode body block by using water; and 4) sintering the anode body block so as to form the anode body.
Description
Technical field
The present invention relates to the electrochemical capacitor field, particularly the manufacture method of the anode bodies of electrochemical capacitor.
Background technology
Power circuit in the intelligent portable electronic equipment and voicefrequency circuit part need to use tantalum electrolytic capacitor or niobium oxide electrolytic capacitor to realize energy storage and filtering.This type capacitor requires miniaturization, big capacity, and this further has higher requirement to tantalum electric capacity or the employed tantalum powder of niobium oxide capacitor or niobium oxide powder specific volume.The beginning that present specific volume is 100000～300000 μ FV/g tantalum powder or niobium oxide powder is used on a large scale, and the performance of this type electrochemical capacitor (such as life-span, anode bodies leakage current etc.) is not ideal.
Summary of the invention
In order to overcome the deficiency of prior art, the invention provides a kind of anode bodies manufacture method of electrochemical capacitor, when cutting down the consumption of energy, improve the electrical property of anode bodies.
A kind of anode bodies manufacture method of electrochemical capacitor comprises the steps:
1) with tantalum powder or niobium oxide powder and additive and solvent, processes the anode bodies piece; Said additive is paraffin, stearic acid, camphor, glycerine, benzoic acid or Sodium Benzoate, and said solvent is gasoline, trichloroethanes, alcohol or acetone;
2) said anode bodies piece is immersed in alcohol, acetone or the carrene;
3) water cleans said anode bodies piece;
4) said anode bodies piece forms anode bodies through oversintering.
Preferably, said step 2) in 40 ° to 100 ° temperature, carry out.
Preferably, the time that said step 2) continues is 10 to 30 minutes.
Preferably, said step 3) is carried out in 40 ° to 90 ° temperature.
Preferably, the lasting time of said step 3) is 5 to 10 minutes.
Preferably, the specific volume of said tantalum powder or niobium oxide powder is 200-300K μ FV/g.
The invention has the beneficial effects as follows: through adopting alcohol, acetone or carrene additive in the anode bodies piece and dissolution with solvents; Reduced the Impurity removal that carbon etc. is difficult to volatilize that comprises of anode bodies piece; Further will remain in the substance dissolves such as alcohol of anode bodies piece through water; Further reduce the impurity content of anode bodies piece, effectively improved properties of product; Enough micropores obtain discharging in the anode bodies simultaneously, are convenient to the lining of cathode material, have improved the capacity extraction rate; In addition, the impurity through in the dissolving anode bodies piece can shorten in order to remove the sintering time of additive in the anode bodies, has reduced energy consumption.
Embodiment
Embodiment 1
In the tantalum powder, add additive paraffin and gasoline, mix then, then mixture is made into the tantalum anode body piece through modes such as compactings; The use of additive and gasoline can make the tantalum powder form a type spherical false particle, improves the flowability of tantalum powder, is convenient to the tantalum powder and forms the tantalum anode body piece.Wherein the specific volume of tantalum powder is 200-300K μ FV/g.
Under the condition of 40 ° of temperature, the tantalum anode body piece is immersed in the alcohol, and continue 10 minutes, paraffin and gasoline in the tantalum anode body piece fully are dissolved in the alcohol.
The tantalum anode body piece is taken out; Under the condition of 40 ° of temperature, water cleaned the tantalum anode body piece 5 minutes, made that residual alcohol, paraffin and gasoline fully is dissolved in the water in the tantalum anode body piece; Under the temperature more than 40 °, the solubility of these compositions in water is bigger.
The tantalum anode body piece is carried out sintering, form anode bodies.The carbon content of the tantalum anode body that making obtains is reduced to 30 to 100ppm, and simultaneously the oxygen content of tantalum anode body is no more than 5% of oxygen content in original tantalum powder.
Embodiment 2
In the tantalum powder, add additive stearic acid and trichloroethanes, mix then, then mixture is made into the tantalum anode body piece through modes such as compactings; The use of additive and trichloroethanes can make the tantalum powder form a type spherical false particle, improves the flowability of tantalum powder, is convenient to the tantalum powder and forms the tantalum anode body piece.
Under the condition of 70 ° of temperature, the tantalum anode body piece is immersed in the alcohol, and continue 20 minutes, stearic acid and trichloroethanes in the tantalum anode body piece fully are dissolved in the alcohol.
The tantalum anode body piece is taken out, and under the condition of 60 ° of temperature, water cleaned the tantalum anode body piece 7 minutes, made that residual alcohol, stearic acid and trichloroethanes fully is dissolved in the water in the tantalum anode body piece.
The tantalum anode body piece is carried out sintering, form anode bodies.The carbon content of the tantalum anode body that making obtains is reduced to 30 to 100ppm, and simultaneously the oxygen content of tantalum anode body is no more than 5% of oxygen content in original tantalum powder.
Embodiment 3
In the niobium oxide powder, add additive camphor and alcohol, mix then, then mixture is made into the tantalum anode body piece through modes such as compactings; The use of additive and alcohol can make the tantalum powder form a type spherical false particle, improves the flowability of tantalum powder, is convenient to the tantalum powder and forms the tantalum anode body piece.Wherein the specific volume of niobium oxide is 200-300K μ FV/g.
Under the condition of 100 ° of temperature, the tantalum anode body piece is immersed in the acetone, and continue 30 minutes, camphor and alcohol in the tantalum anode body piece fully are dissolved in the acetone.
The tantalum anode body piece is taken out, and under the condition of 90 ° of temperature, water cleaned the tantalum anode body piece 10 minutes, made that residual acetone, camphor and alcohol fully is dissolved in the water in the tantalum anode body piece.
The tantalum anode body piece is carried out sintering, form anode bodies.The carbon content of the tantalum anode body that making obtains is reduced to 30 to 100ppm, and simultaneously the oxygen content of tantalum anode body is no more than 5% of oxygen content in original tantalum powder.Following table is some component content of tantalum powder and the final tantalum anode body that forms:
Claims (6)
1. the anode bodies manufacture method of an electrochemical capacitor is characterized in that, comprises the steps:
1) with tantalum powder or niobium oxide powder and additive and solvent, processes the anode bodies piece; Said additive is paraffin, stearic acid, camphor, glycerine, benzoic acid or Sodium Benzoate, and said solvent is gasoline, trichloroethanes, alcohol or acetone;
2) said anode bodies piece is immersed in alcohol, acetone or the carrene;
3) water cleans said anode bodies piece;
4) said anode bodies piece forms anode bodies through oversintering.
2. the anode bodies manufacture method of electrochemical capacitor as claimed in claim 1 is characterized in that: said step 2) in 40 ° to 100 ° temperature, carry out.
3. the anode bodies manufacture method of electrochemical capacitor as claimed in claim 1 is characterized in that: the time that said step 2) continues is 10 to 30 minutes.
4. the anode bodies manufacture method of electrochemical capacitor as claimed in claim 1, it is characterized in that said: said step 3) is carried out in 40 ° to 90 ° temperature.
5. the anode bodies manufacture method of electrochemical capacitor as claimed in claim 1 is characterized in that said: the time that said step 3) continues is 5 to 10 minutes.
6. the anode bodies manufacture method of electrochemical capacitor as claimed in claim 1, it is characterized in that said: the specific volume of said tantalum powder or niobium oxide powder is 200-300K μ FV/g.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210317846.9A CN102842432B (en) | 2012-08-31 | 2012-08-31 | The manufacture method of the anode bodies of electrochemical capacitor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210317846.9A CN102842432B (en) | 2012-08-31 | 2012-08-31 | The manufacture method of the anode bodies of electrochemical capacitor |
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| CN102842432A true CN102842432A (en) | 2012-12-26 |
| CN102842432B CN102842432B (en) | 2016-07-06 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105428071A (en) * | 2016-01-12 | 2016-03-23 | 深圳顺络电子股份有限公司 | Manufacturing method of anode |
| CN105931843A (en) * | 2016-06-30 | 2016-09-07 | 中国振华（集团）新云电子元器件有限责任公司 | Anode sintering method of tantalum electrolytic capacitor |
| CN106128763A (en) * | 2016-06-14 | 2016-11-16 | 东莞市联洲知识产权运营管理有限公司 | A kind of preparation method of Large Copacity novel high-energy solid electrolyte niobium capacitor |
| CN106847560A (en) * | 2017-02-17 | 2017-06-13 | 中国振华（集团）新云电子元器件有限责任公司 | A kind of method for improving shaping tantalum block surface property |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996001163A1 (en) * | 1994-07-01 | 1996-01-18 | H.C. Starck, Inc. | REMOVAL OF BINDER FROM Ta PRODUCTS |
| CN101460426A (en) * | 2006-07-06 | 2009-06-17 | Avx有限公司 | Binder removal from particulate bodies |
| CN101814380A (en) * | 2009-02-20 | 2010-08-25 | 阿维科斯公司 | Anode for a solid electrolytic capacitor containing a non-metallic surface treatment |
-
2012
- 2012-08-31 CN CN201210317846.9A patent/CN102842432B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996001163A1 (en) * | 1994-07-01 | 1996-01-18 | H.C. Starck, Inc. | REMOVAL OF BINDER FROM Ta PRODUCTS |
| CN101460426A (en) * | 2006-07-06 | 2009-06-17 | Avx有限公司 | Binder removal from particulate bodies |
| CN101814380A (en) * | 2009-02-20 | 2010-08-25 | 阿维科斯公司 | Anode for a solid electrolytic capacitor containing a non-metallic surface treatment |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105428071A (en) * | 2016-01-12 | 2016-03-23 | 深圳顺络电子股份有限公司 | Manufacturing method of anode |
| CN105428071B (en) * | 2016-01-12 | 2019-01-18 | 深圳顺络电子股份有限公司 | A kind of manufacturing method of anode |
| CN106128763A (en) * | 2016-06-14 | 2016-11-16 | 东莞市联洲知识产权运营管理有限公司 | A kind of preparation method of Large Copacity novel high-energy solid electrolyte niobium capacitor |
| CN105931843A (en) * | 2016-06-30 | 2016-09-07 | 中国振华（集团）新云电子元器件有限责任公司 | Anode sintering method of tantalum electrolytic capacitor |
| CN106847560A (en) * | 2017-02-17 | 2017-06-13 | 中国振华（集团）新云电子元器件有限责任公司 | A kind of method for improving shaping tantalum block surface property |
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| Publication number | Publication date |
|---|---|
| CN102842432B (en) | 2016-07-06 |
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