CN105390299A - Preparation method for supercapacitor pole piece - Google Patents
Preparation method for supercapacitor pole piece Download PDFInfo
- Publication number
- CN105390299A CN105390299A CN201510955802.2A CN201510955802A CN105390299A CN 105390299 A CN105390299 A CN 105390299A CN 201510955802 A CN201510955802 A CN 201510955802A CN 105390299 A CN105390299 A CN 105390299A
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- Prior art keywords
- pole piece
- super
- capacitor pole
- slurry
- manufacture method
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/84—Processes for the manufacture of hybrid or EDL capacitors, or components thereof
- H01G11/86—Processes for the manufacture of hybrid or EDL capacitors, or components thereof specially adapted for electrodes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/13—Energy storage using capacitors
Abstract
The invention proposes a preparation method for a supercapacitor pole piece. The preparation method comprises the following steps of S1, pre-mixing a paste including deionized water, active carbon, a conductive agent and a binding agent for preparing the supercapacitor pole piece according to predetermined proportions, and entering the step S2; S2, carrying out high-speed dispersion on the paste to form a paste which can be used for coating, and entering the step S3; S3, applying the paste on a current collector to form the supercapacitor pole piece; and S4, rolling the supercapacitor pole piece at a predetermined temperature. Compared with a traditional intermittent dispersion process, the above preparation method for the supercapacitor pole piece has the advantages that the production efficiency is higher; and moreover, the supercapacitor pole piece produced according to the above preparation method has a better quality, the problems that the paste of the supercapacitor pole piece is long in dispersion time and is difficult to disperse and easy to agglomerate are solved, and the supercapacitor pole piece is better in stability and has a longer service lifetime.
Description
Technical field
The present invention relates to capacitor technology field, particularly a kind of manufacture method of super-capacitor pole piece.
Background technology
Ultracapacitor, also known as electrochemical capacitor, gold electric capacity etc., is a kind of Novel energy storage apparatus between conventional electrostatic capacitor and secondary cell, has the advantage of secondary cell and traditional capacitor concurrently.The features such as it has that power density is high, energy density is large, life-span long (more than hundreds thousand of times), operating temperature range wide (-40 DEG C ~ 65 DEG C), efficiency for charge-discharge are high, pollution-free, have in fields such as new forms of energy (solar energy and wind energy), communication, digital electric, electric power, automobile, engineering machinery, military affairs and Aero-Space and apply very widely.
Pole piece is the core component of ultracapacitor, is made up of active material layer and collector, and its performance quality has critical impact to the capacity, internal resistance etc. of ultracapacitor.At present, national Super capacitor enterprise generally fails effectively to grasp the technology that high-performance pole piece manufactures, ubiquity slurry difficulties in dispersion, easy reunion, causes pole piece to occur a large amount of siccative scraper, and general employing one side batch (-type) rubbing method, pole piece is easily occurred, and tension force is uneven, and variable thickness causes.And in pole piece roll process, the cold rolling techniques that current production generally adopts, makes pole piece poor ductility, cause slurry tack to be deteriorated, roll-in pole piece variable thickness causes, and performance quality is difficult to meet application requirement.Therefore, ultracapacitor industry development faces serious technical bottleneck.
In sum, how to provide that a kind of efficiency is higher, the manufacture method of the super-capacitor pole piece of better quality, become those skilled in the art to need the technical problem of solution badly.
Summary of the invention
The technical problem to be solved in the present invention is: provide that a kind of efficiency is higher, the manufacture method of the super-capacitor pole piece of better quality.
Solution of the present invention is achieved in that the present invention proposes a kind of manufacture method of super-capacitor pole piece, comprises the steps:
S1: to the slurry for making super-capacitor pole piece, comprises deionized water, active carbon, conductive agent and binding agent and stirs in advance by predetermined ratio, and enter S2;
S2: carry out high speed dispersion to slurry, forms the slurry that can apply, and enters S3;
S3: slurry is coated on collector, forms super-capacitor pole piece;
S4: at a predetermined temperature roll-in is carried out to super-capacitor pole piece.
Another technical scheme of the present invention is, on above-mentioned basis, also to comprise the steps:
S5: super-capacitor pole piece is cut.
Another technical scheme of the present invention is, on above-mentioned basis, in step S1, to stir in vacuum environment to slurry.
Another technical scheme of the present invention is, on above-mentioned basis, in step S3, to be evenly coated on collector by slurry, and is disposablely coated with out two-sided pole piece.
Another technical scheme of the present invention is on above-mentioned basis, in step S1, and the composition of slurry, deionized water: active carbon: conductive agent: the ratio of binding agent is 30:8.5:1:0.5.
Another technical scheme of the present invention is on above-mentioned basis, and in step S3, carry out drying by least one drying process to super-capacitor pole piece, baking temperature is between 70 ~ 100 DEG C.
Another technical scheme of the present invention is on above-mentioned basis, and drying process comprises quick-drying operation and slow curing operation.
Another technical scheme of the present invention is on above-mentioned basis, in step S4, carries out roll-in by intensification hot-rolling pressure mode to super-capacitor pole piece.
Another technical scheme of the present invention is on above-mentioned basis, when carrying out roll-in by roll squeezer to super-capacitor pole piece, needs first the big roller of roll squeezer to be increased to predetermined temperature, and carries out constant temp. heating roll-in.
Another technical scheme of the present invention is that, on above-mentioned basis, described predetermined temperature is between 80 ~ 85 DEG C.
Accompanying drawing explanation
The accompanying drawing forming a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.
Fig. 1 is the FB(flow block) of the manufacture method of a kind of super-capacitor pole piece of the present invention.
Embodiment
Describe the present invention below in conjunction with accompanying drawing, the description of this part is only exemplary and explanatory, should not have any restriction to protection scope of the present invention.In addition, those skilled in the art, according to the description of presents, can carry out respective combination to the feature in embodiment in presents and in different embodiment.
The embodiment of the present invention is as follows, refers to Fig. 1, the manufacture method of super-capacitor pole piece, particularly, at least comprise the steps, step S1, to the slurry for making super-capacitor pole piece, comprise deionized water, active carbon, conductive agent and binding agent, by predetermined ratio mixing, stir in advance, it is made fully to mix, to be mixed complete after, enter next step, i.e. step S2.
In step S2, high speed dispersion is carried out to the slurry stirred in advance through step S1, form the slurry that can apply further.It should be noted that, in one embodiment, when carrying out high speed dispersion to slurry, cartridge type can be adopted to rotate high speed dispersing device and carry out adjustment dispersion to the slurry be stirred in advance, its built-in cartridge type Stirring wheel has a lot of aperture, to be more conducive to slurry dispersion; During high speed dispersion, can continous way produce in device, throat-fed is disperseed, slurry after dispersion can flow out by discharging opening simultaneously, can successfully shorten the slurry preparation time, simultaneously greatly improve Stability of Slurry, avoid slurry due to etc. the to be produced and problem of sedimentation.In operating process, the charging aperture that cartridge type rotates high speed dispersing device can be opened, rate of dispersion is set, slurry after stirring pre-in step S1 is disperseed, open discharging opening, slurry high speed dispersion crossed is delivered to turning barrel in dispensing area by screw pump simultaneously, wherein in course of conveying through filter, the excessive particle of particle diameter cannot enter coating feeding area, just can be sifted out.After this process completes, enter step S3.
In step S3, can slurry be coated on collector, to form super-capacitor pole piece, this process is called for short coating, in one embodiment, extruded type suspension coating apparatus online coating while that zero bubble specifically can being adopted two-sided, through multiple tracks baking oven in tape transport process, through quick-drying, slow curing two arid regions, reduce content of moisture in pole piece effectively rapidly, decrease the generation that slurry comes off from collector, improve the consistency of pole piece, homogeneity and stability.During concrete operations, open coating machine feeding device, during slurry after step S2 high speed dispersion is passed through, turning barrel starts automatic charging, two-sided online coating while of carrying out extruding floated, and control thickness, slurry is evenly coated on collector the most at last, until finally form super-capacitor pole piece.After this process completes, enter step S4.
In step S4, at a predetermined temperature roll-in is carried out to super-capacitor pole piece.Particularly, in one embodiment, by super-capacitor pole piece milling train, and adopt hot-rolling compression technology, make pole piece have better ductility, avoid pole piece to occur uneven thickness, the problem of roll-in consistency difference, also make pole piece have better caking property simultaneously.The manufacture method of above-mentioned super-capacitor pole piece, compared with conventional batch dispersing technology, production efficiency is higher, and, through the super-capacitor pole piece better quality that above-mentioned manufacture method is produced, solve the problem that super-capacitor pole piece slurry jitter time is long, be difficult to dispersion and easily reunite, the stability of super-capacitor pole piece and longer service life.
On the basis of above-described embodiment, in another embodiment of the present invention, also comprise the steps, namely in step S5, super-capacitor pole piece is cut.Through the super-capacitor pole piece that above-mentioned four steps are made, just can proceed to a point cutting process, according to the use occasion of super-capacitor pole piece, determine its width, and constantly adjust slitter blade position as required, open cutting machine automatic cutting pattern, start to cut, until cut.During concrete operations, available Full-automatic pole sheet cutting machine is cut pole piece, and it is high not only to cut efficiency, and cuts better effects if.
On the basis of above-described embodiment, in another embodiment of the present invention, in step S1, to the slurry of super-capacitor pole piece, when namely deionized water, active carbon, conductive agent and binding agent stir, preferably in vacuum environment, slurry is stirred.Particularly, planetary de-airing mixer can be adopted to carry out slurry stir in advance.In this step, by stirring slurry under vacuum conditions, can effectively prevent slurry from whipping process, producing bubble, thus affect the quality of slurry.
On the basis of above-described embodiment, in another embodiment of the present invention, in step S3, slurry is evenly coated on collector, and is disposablely coated with out two-sided pole piece.
On the basis of above-described embodiment, in another embodiment of the present invention, during operation, by coating machine feeding device, in being passed through by slurry after step S2 high speed dispersion, turning barrel starts automatic charging, two-sided online coating while of carrying out extruding floated, controls thickness, is evenly coated on collector by slurry.Particularly, open coating machine tape transport and material loading pattern, the slurry that high speed dispersion is crossed, by screw pump, is delivered to turning barrel in dispensing area through sieves, then starts the coating of automatic charging on-line uninterruption by screw pump.Note in coating process, with or without problems such as siccative scrapers, removing in time when occurring; Notice that rolling is with or without playing the problems such as drum in rolling place, monitoring and adjusting discharge capacity, make coating thickness uniformity, until rolling completes in time.The advantage of this operation be employing zero bubble two-sided while extruded type to suspend online coating, be disposablely coated with out two-sided pole piece, effectively can shorten coating duration, improve coating efficiency.
On the basis of above-described embodiment, in another embodiment of the present invention, in step S1, for the component ratio of slurry, be specially deionized water: active carbon: conductive agent: the ratio of binding agent is 30:8.5:1:0.5.The mixed slurry of this ratio, after being made into super-capacitor pole piece, its homogeneity and stability etc. are optimum.
On the basis of above-described embodiment, in another embodiment of the present invention, in step S3, after super-capacitor pole piece is coated with, at least also need to carry out drying by one drying process to super-capacitor pole piece, and baking temperature is between 70 ~ 100 DEG C.During concrete operations, start coating machine baking box, and the temperature of baking box is adjusted to the arbitrary temperature between 70 ~ 100 DEG C, and in the given time super-capacitor pole piece is toasted.Super-capacitor pole piece after overbaking, can effectively prevent slurry from coming off from collector, improve the consistency of pole piece, homogeneity and stability.
On the basis of above-described embodiment, in another embodiment of the present invention, the above-mentioned baking drying process to super-capacitor pole piece, specifically comprises quick-drying and slow curing two procedures.Particularly, super-capacitor pole piece is in tape transport process, can repeatedly through baking box, and through the quick-drying of baking box and slow curing two arid regions, remove effectively fast or reduce moisture in super-capacitor pole piece, to come off the possibility occurred from collector to reduce slurry, and then improve the quality of super-capacitor pole piece.
On the basis of above-described embodiment, in another embodiment of the present invention, in step S4, by intensification hot-rolling pressure mode, roll-in is carried out to the super-capacitor pole piece wound in step S3.More specifically, in one embodiment, before roll-in, in advance the large roll temperature of pole piece roller compression machine is increased to predetermined temperature, again pole piece is connected head and the tail unwinding and rewinding place according to roller bearing direction tape transport, open pole piece milling train automatic roll pattern, regulate roll-in speed to start to carry out constant temp. heating roll-in, and roll-in is to predetermined thickness, until roll-in completes.Adopt constant temperature roll-in mode to carry out roll-in, compare the cold roll-in of normal temperature, collector effectively can be prevented to be out of shape wrinkling, have good ductility, coat can be bonded on collector better simultaneously, reduces to fall to expect risk.
On the basis of above-described embodiment, in another embodiment of the present invention, in above-mentioned steps, when carrying out predetermined temperature roll-in to super-capacitor pole piece, predetermined temperature is between 80 ~ 85 DEG C.At this temperature, super-capacitor pole piece roll-in to predetermined thickness, just a point cutting process can be proceeded to afterwards.
The manufacture method of super-capacitor pole piece as above, compared with conventional batch dispersing technology, adopt that slurry stirs in advance, the coating of high speed dispersion, coating machine, roll squeezer roll-in and cutting machine cut, production efficiency effectively improves, and, through the super-capacitor pole piece better quality that above-mentioned manufacture method is produced, solve super-capacitor pole piece slurry jitter time length, be difficult to disperse and easy problem of reuniting, the stability of super-capacitor pole piece is better, longer service life.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a manufacture method for super-capacitor pole piece, is characterized in that, comprises the steps:
S1: to the slurry for making super-capacitor pole piece, comprises deionized water, active carbon, conductive agent and binding agent and stirs in advance by predetermined ratio, and enter S2;
S2: carry out high speed dispersion to slurry, forms the slurry that can apply, and enters S3;
S3: slurry is coated on collector, forms super-capacitor pole piece;
S4: at a predetermined temperature roll-in is carried out to super-capacitor pole piece.
2. the manufacture method of super-capacitor pole piece according to claim 1, is characterized in that, also comprises the steps:
S5: super-capacitor pole piece is cut.
3. the manufacture method of super-capacitor pole piece according to claim 1, is characterized in that, in step S1, stirs in vacuum environment to slurry.
4. the manufacture method of super-capacitor pole piece according to claim 1, is characterized in that, in step S3, is evenly coated on collector by slurry, and is disposablely coated with out two-sided pole piece.
5. the manufacture method of super-capacitor pole piece according to claim 1, is characterized in that, in step S1, and the composition of slurry, deionized water: active carbon: conductive agent: the ratio of binding agent is 30:8.5:1:0.5.
6. the manufacture method of the super-capacitor pole piece according to claim 4 or 5, is characterized in that, in step S3, carry out drying by least one drying process to super-capacitor pole piece, baking temperature is between 70 ~ 100 DEG C.
7. the manufacture method of super-capacitor pole piece according to claim 6, is characterized in that, drying process comprises quick-drying operation and slow curing operation.
8. the manufacture method of super-capacitor pole piece according to claim 2, is characterized in that, in step S4, carries out roll-in by intensification hot-rolling pressure mode to super-capacitor pole piece.
9. the manufacture method of super-capacitor pole piece according to claim 8, is characterized in that, when carrying out roll-in by roll squeezer to super-capacitor pole piece, needs first the big roller of roll squeezer to be increased to predetermined temperature, and carries out constant temp. heating roll-in.
10. the manufacture method of super-capacitor pole piece according to claim 9, is characterized in that, described predetermined temperature is between 80 ~ 85 DEG C.
Priority Applications (1)
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| CN201510955802.2A CN105390299A (en) | 2015-12-16 | 2015-12-16 | Preparation method for supercapacitor pole piece |
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| CN201510955802.2A CN105390299A (en) | 2015-12-16 | 2015-12-16 | Preparation method for supercapacitor pole piece |
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Cited By (4)
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| CN105632772A (en) * | 2016-03-17 | 2016-06-01 | 东华大学 | Preparation method for titanium dioxide photoanode of titanium-based flexible dye-sensitized solar cell |
| CN106128796A (en) * | 2016-06-08 | 2016-11-16 | 湖南耐普恩科技有限公司 | A kind of ultracapacitor, current collector of super capacitor and processing method thereof |
| CN106129326A (en) * | 2016-08-30 | 2016-11-16 | 中航锂电（洛阳）有限公司 | A kind of preparation method of water system stack type lithium ion battery pole piece |
| CN114280371A (en) * | 2021-12-23 | 2022-04-05 | 合肥国轩高科动力能源有限公司 | Lithium battery coating pole piece quality consistency detection method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105632772A (en) * | 2016-03-17 | 2016-06-01 | 东华大学 | Preparation method for titanium dioxide photoanode of titanium-based flexible dye-sensitized solar cell |
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| CN106129326A (en) * | 2016-08-30 | 2016-11-16 | 中航锂电（洛阳）有限公司 | A kind of preparation method of water system stack type lithium ion battery pole piece |
| CN106129326B (en) * | 2016-08-30 | 2018-12-07 | 中航锂电（洛阳）有限公司 | A kind of preparation method of water system stack type lithium ion battery pole piece |
| CN114280371A (en) * | 2021-12-23 | 2022-04-05 | 合肥国轩高科动力能源有限公司 | Lithium battery coating pole piece quality consistency detection method |
| CN114280371B (en) * | 2021-12-23 | 2024-03-12 | 合肥国轩高科动力能源有限公司 | Quality consistency detection method for lithium battery coated pole piece |
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