CN107833759A - A kind of silk screen print method prepares the preparation method of graphene electrode of super capacitor - Google Patents
A kind of silk screen print method prepares the preparation method of graphene electrode of super capacitor Download PDFInfo
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- CN107833759A CN107833759A CN201710953853.0A CN201710953853A CN107833759A CN 107833759 A CN107833759 A CN 107833759A CN 201710953853 A CN201710953853 A CN 201710953853A CN 107833759 A CN107833759 A CN 107833759A
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- graphene
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- super capacitor
- electrode
- graphite oxide
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Classifications
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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
-
- 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
- H01G11/22—Electrodes
- H01G11/30—Electrodes characterised by their material
- H01G11/32—Carbon-based
- H01G11/36—Nanostructures, e.g. nanofibres, nanotubes or fullerenes
-
- 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 discloses the preparation method, wherein that a kind of silk screen print method prepares graphene electrode of super capacitor, the preparation method of graphene electrode of super capacitor comprises the following steps：a）Prepare graphite oxide；B) graphite oxide progress reduction treatment preparation is obtained into graphene powder；B) graphene powder is configured to slurry；D) target substrate surface is printed on using the method for silk-screen printing and obtains Graphene electrodes.
Description
Technical field
The present invention relates to the preparation field of electronic component, more particularly to graphene, Graphene electrodes preparing technical field.
Background technology
In recent years, ultracapacitor with its high-energy, fast charging and discharging, high power density, the advantage such as have extended cycle life,
The position occupied in energy storage material becomes more and more important.It is single in view of environmental protection and designing and developing the dynamical system of electric automobile
Only battery can not meet the requirement of dynamical system, and high power density electrochemical capacitor and high density cell parallel are obtained
AC-battery power source can meet the needs of high power density, and energy regenerating can be realized.
The most critical part of ultracapacitor is electrode material.Because graphene has high conductivity, high tenacity, height
The features such as intensity, extra specific surface area, the specific surface area of single-layer graphene can be up to 2630 m2/ g so that graphene turns into reason
The ultracapacitor energy storage material thought.
With the continuous development of microdevice, electric capacity used is also required to develop to the direction of small size, low thickness, and uses
Interdigited electrode material can effectively reduce the thickness of ultracapacitor.The preparation method master of graphene film interdigital electrode at present
If the method for laser engraving reduction.Graphene oxide is first prepared into thin-film material by this method, then with laser with appropriate work(
Rate is carved, and obtains being pre-designed the electrode structure of shape.The thin-film material that this method drawback is to prepare is in laser engraving mistake
Cheng Zhong, being excited the degree of oxidation of luminous power and graphene oxide influences greatly, to cause the not repeated of electrode fabrication, is difficult to realize
Batch production.At the same time, chemical reducing agent is usually added in order to improve the efficiency of laser reduction, in production aid in also
Original, and this kind of chemical reducing agent is remained in Graphene electrodes, significantly impacts the electric conductivity of electrode.
The present invention proposes a kind of method for preparing graphene interdigital electrode, can solve the problems, such as resistance in electrode, and
And batch production can be realized.This method is first thoroughly reduced graphene oxide with chemical reduction method in aqueous, is led to
Cross ultracentrifugal method to dispose the impurity in solution and ion, dry and obtain graphene powder.Again by graphene powder
Slurry is configured to, being printed on target substrate surface using the method for silk-screen printing obtains electrode of super capacitor.The electrode can lead to
Cross electric capacity encapsulation flow and be fabricated to ultracapacitor.Graphene electrode of super capacitor is prepared using the method for silk-screen printing, by
It is fully to reduce in advance in active material, so as to reduce electric capacity internal resistance, obtained electrode material electrical efficiency obtains fully
Play.At the same time, designed by electrode shape, it is possible to achieve the preparation of all kinds of interdigital electrodes.
The content of the invention
Purport of the present invention provides the preparation method that a kind of silk screen print method prepares graphene electrode of super capacitor.
A kind of preparation method of graphene, comprises the following steps：
a）By graphite oxidation into graphite oxide solution；
B) it is 7-9 the graphite oxide solution that step a is obtained to be adjusted into PH；
C) reducing agent is added in the graphite oxide solution for obtaining step b, the graphene solution reduced；
d）By the graphene solution that step c is obtained through centrifuging, filtering, being dried to obtain graphene powder, by graphene powder and work
Property material, auxiliary material are mixedly configured into slurry；
E) using silk-screen printing method by the slurry that step d) is configured in target substrate surface printing graphene interdigited electrode
。
Wherein, step c）Including：The graphite oxide and reducing agent are configured to mixed liquor with water, with to the oxidation stone
Ink carries out reduction treatment.
Wherein, the mass ratio of reducing agent described in mixed liquor and the graphite oxide is reducing agent：Graphite oxide=0.1 ~
0.5。
Wherein, the reducing agent includes any of vitamin C, hydrazine hydrate, sodium borohydride or its combination.
Wherein, weight item is in slurry in the step d)：Graphene powder 20%-40%, active material and auxiliary material
It is 9 to expect proportion:1 to 8:2.
Wherein, step d）In, auxiliary material is superconduction graphite+CMC or butadiene-styrene rubber+CMC or PVDF.
A kind of graphene ultracapacitor, it is characterised in that the graphene electrode of super capacitor system prepared using the present invention
It is standby to form.
According to the preparation method of the graphene of above-described embodiment, the method for first reducing and preparing electrode afterwards is used in the present invention,
The problem of electrode internal resistance is excessive caused by avoiding reducing degree deficiency existing for laser engraving method, meanwhile, pass through screen template
Design can obtain various informative electrode structure, so as to suitable for different components assembling and its performance play.
Meanwhile graphene possesses excellent mechanical property, basic reason is the individual layer of graphene or few Rotating fields, in stone
In black alkene preparation process, graphite oxide easily forms individual layer or few layer result in the solution, well dispersed, still, to aoxidizing stone
After ink is reduced, because the group of graphite oxide molecule interlayer removes, graphene is easy to occur to sink to gather, and loses graphene
Premium properties, therefore, by PH regulations to alkalescence in graphite oxide solution, then carry out reducing agent reduction, can effectively keep
Electrostatic interaction between graphene molecules layer, pre- anti-settling, individual layer or few layer graphene is made.
Brief description of the drawings：Fig. 1 is interdigitated Graphene electrodes.
Embodiment
Embodiment 1
First, 1g graphite and the 23ml concentrated sulfuric acids, 0.4g sodium nitrate are reacted 8 hours, reaction temperature is 4 DEG C, the 4g into reactant
Potassium permanganate, 80 DEG C are reacted 3 hours, add 40ml water, add 5ml hydrogen peroxide, graphite oxide is prepared；
Sodium hydroxide is added into obtained graphite oxide solution, regulation PH is 8, ultrasonic wave 30min, adds reducing agent vitamin
C, vitamin C are 1 with graphite oxide mass ratio：3, reduced graphene solution is obtained,
Then, graphene solution centrifuged, filter, be dried to obtain graphene powder.、
Graphene powder is mixed with active material, PVDF, dissolved in organic solvent, wherein, the quality point of graphene powder
Number is 30%, and active material and PVDF mass ratio are 9:2, outfit obtains electrode slurry.
Using screen process press, interdigital electrode is printed in target substrate according to the size of target electrode.
After the pole drying printed, make to obtain ultracapacitor by the packaging process of ultracapacitor.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art is not departing from the principle and objective of the present invention
In the case of above-described embodiment can be changed within the scope of the invention, change, replace and modification.
Claims (7)
1. a kind of silk screen print method prepares the preparation method of graphene electrode of super capacitor, it is characterised in that including following step
Suddenly：
a）By graphite oxidation into graphite oxide solution；
B) it is 7-9 the graphite oxide solution that step a is obtained to be adjusted into PH；
C) reducing agent is added in the graphite oxide solution for obtaining step b, the graphene solution reduced；
d）By the graphene solution that step c is obtained through centrifuging, filtering, being dried to obtain graphene powder, by graphene powder and work
Property material, auxiliary material are mixedly configured into slurry；
E) using silk-screen printing method by the slurry that step d) is configured in target substrate surface printing graphene interdigited electrode
。
2. a kind of silk screen print method as claimed in claim 1 prepares the preparation method of graphene electrode of super capacitor, it is special
Sign is, the step c）Including：The graphite oxide and reducing agent are configured to mixed liquor with water, with to the graphite oxide
Carry out reduction treatment.
3. a kind of silk screen print method as claimed in claim 2 prepares the preparation method of graphene electrode of super capacitor, it is special
Sign is that the mass ratio of the reducing agent described in the mixed liquor and the graphite oxide is reducing agent：Graphite oxide=0.1 ~
0.5。
4. a kind of silk screen print method as claimed in claim 3 prepares the preparation method of graphene electrode of super capacitor, it is special
Sign is that the reducing agent includes any of vitamin C, hydrazine hydrate, sodium borohydride or its combination.
5. a kind of silk screen print method as any one of claim 2 ~ 4 prepares the preparation of graphene electrode of super capacitor
Method, it is characterised in that weight item is in slurry in the step d)：Graphene powder 20%-40%, active material and auxiliary
Material proportion scope is 9:1 to 8:2.
6. a kind of silk screen print method as claimed in claim 1 prepares the preparation method of graphene electrode of super capacitor, it is special
Sign is, the step d）In, auxiliary material is superconduction graphite+CMC or butadiene-styrene rubber+CMC or PVDF.
A kind of 7. graphene ultracapacitor, it is characterised in that the graphene prepared using the method as described in claim 1-7
Electrode of super capacitor is prepared.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108511207A (en) * | 2018-05-24 | 2018-09-07 | 西安电子科技大学 | The preparation method of CVD graphene planes micro super capacitors |
| CN109659164A (en) * | 2019-01-04 | 2019-04-19 | 西北工业大学 | A kind of production method of plane interdigitated electrode structure supercapacitor |
| CN109841426A (en) * | 2019-01-21 | 2019-06-04 | 宁波石墨烯创新中心有限公司 | Graphene-based flexible electrode and preparation method thereof |
| CN111261427A (en) * | 2020-01-21 | 2020-06-09 | 南京邮电大学 | Preparation method of graphene flexible supercapacitor based on screen printing |
| CN112993163A (en) * | 2019-12-12 | 2021-06-18 | 中国科学院大连化学物理研究所 | Flexible self-powered device and preparation method thereof |
| CN114678226A (en) * | 2022-04-11 | 2022-06-28 | 中北大学南通智能光机电研究院 | Preparation method of screen printing electrode based on graphene conductive aqueous slurry |
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| WO2013035900A1 (en) * | 2011-09-07 | 2013-03-14 | 한국과학기술원 | Method for manufacturing graphene film and pattern thereof |
| CN103241732A (en) * | 2013-04-19 | 2013-08-14 | 中国科学院过程工程研究所 | Method for large-scale preparation of high-quality graphene |
| CN104211047A (en) * | 2013-05-30 | 2014-12-17 | 纳米新能源（唐山）有限责任公司 | Graphene, graphene electrode, graphene supercapacitor and preparation method thereof |
| CN106744841A (en) * | 2016-12-21 | 2017-05-31 | 广东工业大学 | A kind of preparation method of the three-dimensional porous graphene film that single-layer graphene is constructed |
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Patent Citations (4)
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| WO2013035900A1 (en) * | 2011-09-07 | 2013-03-14 | 한국과학기술원 | Method for manufacturing graphene film and pattern thereof |
| CN103241732A (en) * | 2013-04-19 | 2013-08-14 | 中国科学院过程工程研究所 | Method for large-scale preparation of high-quality graphene |
| CN104211047A (en) * | 2013-05-30 | 2014-12-17 | 纳米新能源（唐山）有限责任公司 | Graphene, graphene electrode, graphene supercapacitor and preparation method thereof |
| CN106744841A (en) * | 2016-12-21 | 2017-05-31 | 广东工业大学 | A kind of preparation method of the three-dimensional porous graphene film that single-layer graphene is constructed |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108511207A (en) * | 2018-05-24 | 2018-09-07 | 西安电子科技大学 | The preparation method of CVD graphene planes micro super capacitors |
| CN109659164A (en) * | 2019-01-04 | 2019-04-19 | 西北工业大学 | A kind of production method of plane interdigitated electrode structure supercapacitor |
| CN109659164B (en) * | 2019-01-04 | 2021-01-05 | 西北工业大学 | Manufacturing method of planar comb tooth type super capacitor |
| CN109841426A (en) * | 2019-01-21 | 2019-06-04 | 宁波石墨烯创新中心有限公司 | Graphene-based flexible electrode and preparation method thereof |
| CN112993163A (en) * | 2019-12-12 | 2021-06-18 | 中国科学院大连化学物理研究所 | Flexible self-powered device and preparation method thereof |
| CN111261427A (en) * | 2020-01-21 | 2020-06-09 | 南京邮电大学 | Preparation method of graphene flexible supercapacitor based on screen printing |
| CN114678226A (en) * | 2022-04-11 | 2022-06-28 | 中北大学南通智能光机电研究院 | Preparation method of screen printing electrode based on graphene conductive aqueous slurry |
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