CN108695074B - A kind of graphene supercapacitor and preparation method thereof - Google Patents
A kind of graphene supercapacitor and preparation method thereof Download PDFInfo
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- CN108695074B CN108695074B CN201810029819.9A CN201810029819A CN108695074B CN 108695074 B CN108695074 B CN 108695074B CN 201810029819 A CN201810029819 A CN 201810029819A CN 108695074 B CN108695074 B CN 108695074B
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-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
- H01G11/10—Multiple hybrid or EDL capacitors, e.g. arrays or modules
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-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
- H01G11/26—Electrodes characterised by their structure, e.g. multi-layered, porosity or surface features
- H01G11/28—Electrodes characterised by their structure, e.g. multi-layered, porosity or surface features arranged or disposed on a current collector; Layers or phases between electrodes and current collectors, e.g. adhesives
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-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
- H01G11/66—Current collectors
- H01G11/72—Current collectors specially adapted for integration in multiple or stacked hybrid or EDL capacitors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Nanotechnology (AREA)
- Materials Engineering (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The present invention relates to the preparation field of electronic component, in particular to a kind of graphene supercapacitor and preparation method thereof.The graphene supercapacitor includes capacitor body, and the capacitor body includes multiple monomer capacitors and interior tab, wherein is connected in series or in parallel between adjacent monomer capacitor by interior tab in the multiple monomer capacitor；Two outer tabs；And outer packing.The preparation method of the graphene supercapacitor includes: that thin polymer film substrate is fixed on substrate by (1)；(2) CO is used2Infrared laser irradiates thin polymer film substrate, obtains patterned graphene anode, graphene cathode and interior tab；(3) graphene anode, graphene cathode and interior tab are cut out；(4) coating electrolyte forms multiple monomer capacitors, wherein being connected between adjacent monomer capacitor by interior tab in the multiple monomer capacitor；(5) it is disposably encapsulated after outer tab being installed, obtains graphene supercapacitor.
Description
Technical field
The present invention relates to the preparation field of electronic component, in particular to a kind of graphene supercapacitor and its preparation side
Method.
Background technique
Supercapacitor is a kind of a kind of novel energy storage apparatus between physical capacitor and secondary cell.This dress
Set its energy savings and release during it is unique, be not only presented as burst rate charge and discharge process, while also having
There is the advantages of high-energy and high-specific-power, i.e., the charge and discharge time, only tens of seconds, power density were higher by 10- compared with battery
100 times；Energy density is then as many as 100 times of physical capacitor.
The active material of capacitor is generally powder body material, and electrode is by matching powder body material, conductive agent and binder etc.
It is prepared at being coated in conductive substrates after slurry.Also there is the specific shape that preparation is combined using mask and spraying technology
Electrode method, but the technique for substantially still falling within slurry.
Occur preparing the new method of Graphene electrodes using laser irradiation in the recent period.Since graphene is a kind of by carbon original
Carbon molecules made of son is arranged and is connected with each other according to hexagon, structure is highly stable, and has high conductivity, high-ductility
The features such as degree, high-intensitive, extra specific surface area so that the supercapacitor using graphene as electrode material show it is excellent
Performance is more suitable for the storage of energy.
In order to adjust capacity and the pressure resistance of capacitor mould group, generally realized by the series/parallel of capacitor.And it goes here and there
Connection/parallel way can substantially be divided into external monomer series-connected/in parallel and internal monomer series-connected/two kinds in parallel again.External series
It operates fairly simple, it is only necessary to the positive and negative anodes of addition monomers are subjected to corresponding serial/parallel connection, and internal series-connection is then
It is directly to form serial/parallel connection in internal structure before packaging during capacitor fabrication, disposable progress is outer later
Encapsulation.In contrast, internal series/parallel only need to be encapsulated once, save partial encapsulation material and tab.
However, being but rarely reported using the graphene supercapacitor that laser irradiation prepares internal series/parallel at present.
Summary of the invention
In order to solve the above-mentioned technical problems, the present invention provides a kind of graphene supercapacitors and preparation method thereof.
According to an aspect of the invention, there is provided a kind of graphene supercapacitor, comprising:
Capacitor body, the capacitor body include multiple monomer capacitors and interior tab；
Wherein, it is connected in series between adjacent monomer capacitor by interior tab in the multiple monomer capacitor, the monomer electricity
Holding includes graphene anode, graphene cathode and electrolyte, and the graphene anode of the monomer capacitor and the first adjacent monomer are electric
The graphene cathode of appearance by interior tab integrally connected, the graphene cathode of the monomer capacitor and the second adjacent monomer capacitor
Graphene anode passes through interior tab integrally connected；
Two outer tabs, described two outer tabs are connected with head end monomer capacitor and tail end monomer capacitor respectively；And
Outer packing, the outer packing is for being packaged the capacitor body.
Optionally, the electrolyte is colloidal electrolyte.
Optionally, the electrolyte includes PVA/ sulfuric acid, PVA/ hydrochloric acid or PVA/ phosphoric acid.
Optionally, the graphene anode, graphene cathode and interior tab are by the same thin polymer film of laser irradiation
What the surface of substrate was formed.
Optionally, the thin polymer film substrate is Kapton or polyetherimide film.
Optionally, interdigitated, parallel strip, helical form or combinations thereof shape is presented in the graphene anode and graphene cathode
Any one of shape.
Optionally, the distance between the graphene anode and graphene cathode are 0.1-0.5mm.
Optionally, the distance between the graphene anode and graphene cathode are 0.2mm.
According to another aspect of the present invention, a kind of graphene supercapacitor is provided, comprising:
Capacitor body, the capacitor body include multiple monomer capacitors and interior tab, wherein the multiple monomer electricity
It is connected in parallel between adjacent monomer capacitor by interior tab in appearance, the monomer capacitor includes graphene anode, graphene cathode
And electrolyte, the graphene anode of the monomer capacitor and the graphene anode of adjacent monomer capacitor are integrally connected by interior tab
It connects, the graphene cathode of the monomer capacitor and the graphene cathode of adjacent monomer capacitor pass through interior tab integrally connected；
Two outer tabs, described two outer tabs are connected with head end monomer capacitor and tail end monomer capacitor respectively；And
Outer packing, the outer packing is for being packaged the capacitor body.
Optionally, the graphene anode, graphene cathode and interior tab are by the same thin polymer film of laser irradiation
What the surface of substrate was formed.
Optionally, the thin polymer film substrate is Kapton or polyetherimide film.
Optionally, interdigitated, parallel strip, helical form or combinations thereof shape is presented in the graphene anode and graphene cathode
Any one of shape.
According to another aspect of the present invention, a kind of graphene supercapacitor, including capacitor body, the electricity are provided
Vessel is the combination of first capacitor device ontology and the second capacitor body；
Wherein, first capacitor device ontology includes multiple monomer capacitors and interior tab；Adjacent list in the multiple monomer capacitor
It is connected in series between body capacitance by interior tab, the monomer capacitor includes graphene anode, graphene cathode and electrolyte, institute
The graphene cathode of the graphene anode and the first adjacent monomer capacitor of stating monomer capacitor passes through interior tab integrally connected, the list
The graphene anode of the graphene cathode of body capacitance and the second adjacent monomer capacitor passes through interior tab integrally connected；
Wherein, the second capacitor body includes multiple monomer capacitors and interior tab；Wherein, phase in the multiple monomer capacitor
It is connected in parallel between adjacent monomer capacitor by interior tab, the monomer capacitor includes graphene anode, graphene cathode and electrolysis
Liquid, the graphene anode of the monomer capacitor and the graphene anode of adjacent monomer capacitor are described by interior tab integrally connected
The graphene cathode of monomer capacitor and the graphene cathode of adjacent monomer capacitor pass through interior tab integrally connected.
According to another aspect of the present invention, a kind of preparation method of graphene supercapacitor is provided, comprising:
(1) thin polymer film substrate is fixed on substrate；
(2) CO is used2Infrared laser irradiates thin polymer film substrate, obtains patterned graphene anode, graphene
Cathode and interior tab；
(3) graphene anode, graphene cathode and interior tab are cut out；
(4) coating electrolyte forms multiple monomer capacitors, wherein in the multiple monomer capacitor between adjacent monomer capacitor
It is connected by interior tab；
(5) it is disposably encapsulated after outer tab being installed, obtains graphene supercapacitor.
Optionally, wherein patterned graphene anode, graphene cathode and interior tab include single described in step (2)
The graphene cathode of the graphene anode of body capacitance and the first adjacent monomer capacitor by interior tab integrally connected, monomer capacitor
The graphene anode of graphene cathode and the second adjacent monomer capacitor passes through interior tab integrally connected.
Optionally, wherein patterned graphene anode, graphene cathode and interior tab include single described in step (2)
The graphene anode of body capacitance and the graphene anode of adjacent monomer capacitor pass through interior tab integrally connected, the graphite of monomer capacitor
The graphene cathode of alkene cathode and adjacent monomer capacitor passes through interior tab integrally connected.
Optionally, the thin polymer film substrate is Kapton or polyetherimide film.
Optionally, the CO2The power of infrared laser is 2-10mW, and it is 1-5mm/s that laser, which sweeps speed,.
Optionally, the CO2The power of infrared laser is 3mW, and it is 2mm/s that laser, which sweeps speed,.
The present invention prepares graphene using laser irradiation, introduces the structure of internal series/parallel to realize capacitor module
Capacity regulating.Compared with prior art, the invention has the following beneficial effects:
1. preparing Graphene electrodes without slurry feedstocks such as additional conductive agent, adhesives；
2. being not necessarily to additional diaphragm and interior tab, Graphene electrodes are integrally formed simultaneously with interior tab；
3. electrode preparation and capacitor package technique relatively coating and mask plate technique significantly simplify, it is readily produced.
Detailed description of the invention
Fig. 1 shows the structural schematic diagram of graphene supercapacitor；
Fig. 2 shows the graphene supercapacitors of internal series-connection provided in an embodiment of the present invention to remove the knot after outer packing
Structure schematic diagram；
Wherein, 11 be outer tab, and 12 be electrolyte, and 13 be Graphene electrodes, and 14 be interior tab；
Fig. 3 shows the knot after the graphene supercapacitor removal outer packing of internal series-connection provided in an embodiment of the present invention
Structure material object photo；
Fig. 4 shows the structural schematic diagram of the graphene supercapacitor of internal parallel provided in an embodiment of the present invention；
Fig. 5 shows the knot after the graphene supercapacitor removal outer packing of internal parallel provided in an embodiment of the present invention
Structure schematic diagram；
Wherein, 21 be outer tab, and 22 be electrolyte, and 23 be Graphene electrodes, and 24 be interior tab；
Fig. 6 shows the structural representation of the graphene supercapacitor of internal series-connection-parallel connection provided in an embodiment of the present invention
Figure；
Fig. 7 shows the preparation method flow chart of graphene supercapacitor provided in an embodiment of the present invention；
Fig. 8 shows the preparation method process of the graphene supercapacitor of internal series-connection provided in an embodiment of the present invention
Figure；
Fig. 9 shows the preparation method process of the graphene supercapacitor of internal parallel provided in an embodiment of the present invention
Figure；
Figure 10 shows the preparation of the graphene supercapacitor of internal series-connection-parallel combination provided in an embodiment of the present invention
Method flow diagram；
Figure 11 shows the charge and discharge data of the graphene supercapacitor of internal series-connection provided in an embodiment of the present invention；With
And
Figure 12 shows the charge and discharge data of the graphene supercapacitor of non-internal series-connection.
Specific embodiment
The present invention is done in detail by following specific embodiments for the purpose, feature and effect for fully understanding the present invention
Illustrate, but the present invention is not restricted to this.
According to an aspect of the present invention, a kind of graphene supercapacitor is provided, as shown in Figure 1, comprising:
Capacitor body 101, the capacitor body include multiple monomer capacitors 102 and interior tab 103；
Wherein, it is connected in series between adjacent monomer capacitor 102 by interior tab 103 in the multiple monomer capacitor, it is described
Monomer capacitor 102 includes graphene anode, graphene cathode and electrolyte, the graphene anode of the monomer capacitor 102 and the
For the graphene cathode of one adjacent monomer capacitor 102 by interior 103 integrally connected of tab, the graphene of the monomer capacitor 102 is negative
The graphene anode of pole and the second adjacent monomer capacitor 102 is connected by interior tab one 103；
Two outer tabs 104, described two outer tabs 104 respectively with head end monomer capacitor 102 and tail end monomer capacitor 102
It is connected；And
Outer packing 105, the outer packing is for being packaged the capacitor body.
Further, the electrolyte is colloidal electrolyte.The electrolyte be preferably PVA/ sulfuric acid, PVA/ hydrochloric acid or
One of PVA/ phosphoric acid is a variety of.It on the one hand can guarantee that electrolyte is adhesively fixed in graphene electricity using the colloidal electrolyte
Polar region domain prevents electrolyte flow to interior tab position, on the other hand eliminates additional diaphragm, simplifies preparation process.This field
Technical staff can also be by reasonably attempting using other kinds of electrolyte, and the present invention is not especially limited this.
Wherein, graphene anode, graphene cathode and the interior tab 103 of the monomer capacitor 102 are to pass through laser irradiation
What the surface of same thin polymer film substrate was formed.Graphene supercapacitor of the invention is connected without additional interior tab
Technique.
More preferred, the thin polymer film substrate is Kapton or polyetherimide film.Through CO2It is infrared
The irradiation of laser, the thin polymer film substrate surface form porous graphene.Wherein, the carbon atom structure of porous graphene
At micron order or nanoscale pentagon-heptagon polycrystalline lattice, be connected with each other between lattice, have extra specific surface area, compared with
The features such as good electric conductivity and electrochemical stability, therefore the porous graphene that the thin polymer film substrate surface is formed was both
It can be used as capacitor electrode material, can also be used as interior tab and use, greatly improve the chemical property of capacitor.
Further, interdigitated, parallel strip, helical form or combinations thereof is presented in the graphene anode and graphene cathode
Any one of shape.
More preferred, the shape of the graphene anode and graphene cathode is interdigitated.Using the graphite of interdigitated
Alkene electrode can increase the unilateral effective area of electrode, to increase the capacitance of graphene supercapacitor.
Further, the distance between graphene anode and graphene cathode are 0.1-0.5mm in the monomer capacitor, excellent
Choosing, the distance between the graphene anode and graphene cathode are 0.2mm.If spacing is too small, graphene electricity is easily caused
The short circuit of interpolar, spacing is excessive, then is unfavorable for the migration of ion between the electrodes, increases the charge and discharge of graphene supercapacitor
Time.
Further, quantity >=2 of monomer capacitor 102 can be specifically adjusted according to actual needs, not done herein specific
It limits.
Fig. 2 shows the graphene supercapacitors of the removal outer packing of an internal series-connection provided in an embodiment of the present invention
Structural schematic diagram, the electrode shape of graphene is interdigitated, it will be appreciated to those of skill in the art that the super electricity of graphene
The electrode of the graphene of container may be other shapes.Wherein, 11 be outer tab, and 12 be electrolyte, and 13 be graphene electricity
Pole, 14 be interior tab；Wherein, which includes 4 monomer capacitors and 3 interior tabs 14, wherein 4 monomer capacitors
It is connected in series between middle adjacent monomer capacitor by interior tab 14, wherein the monomer capacitor includes Graphene electrodes 13 and electricity
Solve liquid 12；Capacitor body head and the tail both ends are connect with an outer tab 11 respectively.
The graphene supercapacitor of internal series-connection provided by the invention, Graphene electrodes are without additional conductive agent, bonding
The slurry feedstocks such as agent preparation, simple process, and capacitor body be not necessarily to additional diaphragm and interior tab, Graphene electrodes material with
Interior tab integrally connected, is greatly saved material.The material object of the graphene supercapacitor of the removing outer packing of internal series-connection
As shown in Figure 3.
According to another aspect of the present invention, a kind of graphene supercapacitor is provided, as shown in Figure 4, comprising:
Capacitor body 201, the capacitor body include multiple monomer capacitors 202 and interior tab 203；
Wherein, it is connected in parallel between adjacent monomer capacitor 202 by interior tab 203 in the multiple monomer capacitor 202, institute
Stating monomer capacitor 202 includes graphene anode, graphene cathode and electrolyte, the graphene anode of the monomer capacitor 202 and
The graphene anode of adjacent monomer capacitor passes through interior 203 integrally connected of tab, the graphene cathode and phase of the monomer capacitor 202
The graphene cathode of adjacent monomer capacitor 202 passes through interior 203 integrally connected of tab；
Two outer tabs 204, described two outer tabs 204 respectively with head end monomer capacitor 202 and tail end monomer capacitor 202
It is connected；And
Outer packing 205, the outer packing 205 is for being packaged the capacitor body.
Further, graphene anode, graphene cathode and interior tab 203 are to pass through laser in the monomer capacitor 202
Irradiate the surface formation of same thin polymer film substrate.Graphene supercapacitor of the invention, without additional interior tab
Joining Technology.
More preferred, the thin polymer film substrate is Kapton or polyetherimide film.Through CO2It is infrared
The irradiation of laser, the thin polymer film substrate surface form porous graphene.Wherein, the carbon atom structure of porous graphene
At micron order or nanoscale pentagon-heptagon polycrystalline lattice, be connected with each other between lattice, have extra specific surface area, compared with
The features such as good electric conductivity and electrochemical stability, therefore the porous graphene that the thin polymer film substrate surface is formed was both
It can be used as capacitor electrode material, can also be used as interior tab and use, greatly improve the chemical property of capacitor.
Further, 202 graphene anodes of the monomer capacitor and graphene cathode present interdigitated, parallel strip,
Any one of helical form or combinations thereof shape.
More preferred, the shape of the graphene anode and graphene cathode is interdigitated.Using the graphite of interdigitated
Alkene electrode can increase the unilateral effective area of electrode, to increase the capacitance of graphene supercapacitor.
Fig. 5 shows the knot of the graphene supercapacitor of the removing outer packing of internal parallel provided in an embodiment of the present invention
Structure schematic diagram, Graphene electrodes shape are interdigitated, it will be appreciated to those of skill in the art that graphene supercapacitor
Graphene electrodes may be other shapes.Wherein, 21 be outer tab, and 22 be electrolyte, and 23 be Graphene electrodes, and 24 be interior
Tab；Wherein, which includes 2 monomer capacitors and 2 interior tabs 24, wherein adjacent in 2 monomer capacitors
It is connected in parallel between monomer capacitor by interior tab 24, wherein the monomer capacitor includes Graphene electrodes 23 and electrolyte 22；
Capacitor body head and the tail both ends are connect with an outer tab 21 respectively.
The graphene supercapacitor of internal parallel provided by the invention, Graphene electrodes are without additional conductive agent, bonding
The slurry feedstocks such as agent preparation, simple process, and capacitor body be not necessarily to additional diaphragm and interior tab, Graphene electrodes material with
Interior tab integrally connected, is greatly saved material.
According to another aspect of the present invention, a kind of graphene supercapacitor is provided, as shown in fig. 6, including capacitor
Ontology, the capacitor body are the combination of first capacitor device ontology 301 and the second capacitor body 401.
Further, the first capacitor device ontology 301 includes multiple monomer capacitors 302 and interior tab 303, wherein institute
It states in multiple monomer capacitors and is connected in series between adjacent monomer capacitor 302 by interior tab 303, the monomer capacitor 302 includes
Graphene anode, graphene cathode and electrolyte, the graphene anode of the monomer capacitor 302 and the first adjacent monomer capacitor
302 graphene cathode passes through interior 303 integrally connected of tab, the graphene cathode of the monomer capacitor 302 and the second adjacent list
The graphene anode of body capacitance 302 passes through interior 303 integrally connected of tab；Second capacitor body 401 includes multiple monomers
Capacitor 402 and interior tab 403, wherein pass through interior tab 403 simultaneously between adjacent monomer capacitor 402 in the multiple monomer capacitor
Connection connection, the monomer capacitor 402 include graphene anode, graphene cathode and electrolyte, the graphite of the monomer capacitor 402
The graphene anode of alkene anode and adjacent monomer capacitor 402 passes through 403 integrally connected of interior tab, the stone of the monomer capacitor 402
The graphene cathode of black alkene cathode and adjacent monomer capacitor 402 passes through 403 integrally connected of interior tab.
Wherein, the present invention is to the number of first capacitor device ontology and the second capacitor body, the number and list of monomer capacitor
The connection relationship of body capacitance is not particularly limited, and those skilled in the art can according to actual needs be adjusted it.
Further, the graphene anode, graphene cathode and interior tab are by the same polymer thin of laser irradiation
What the surface of film substrate was formed.
Further, interdigitated, parallel strip, helical form or combinations thereof is presented in the graphene anode and graphene cathode
Any one of shape.
According to another aspect of the invention, a kind of preparation method of graphene supercapacitor is provided, as shown in fig. 7,
Include:
Step S110: thin polymer film substrate is fixed on substrate；
Step S120: CO is used2Infrared laser irradiates thin polymer film substrate, obtain patterned graphene anode,
Graphene cathode and interior tab；
Step S130: graphene anode, graphene cathode and interior tab are cut out；
Step S140: coating electrolyte forms multiple monomer capacitors, wherein adjacent monomer electricity in the multiple monomer capacitor
It is connected between appearance by interior tab；
Step S150: it is disposably encapsulated after the outer tab of installation, obtains graphene supercapacitor.
The preparation method of graphene supercapacitor provided by the invention, using CO2Infrared laser irradiates polymer thin
The mode of film substrate prepares graphene anode, graphene cathode and interior tab.It can be by predefined parameter (such as before laser irradiation
Distance etc. between Graphene electrodes and interior tab integrally connected situation, graphene positive and negative anodes) design the stone with predetermined shape
Black alkene electrode and interior tab.Wherein, the shape of Graphene electrodes include but is not limited to interdigitated, parallel strip, helical form and its
Any one of combined shaped.
A kind of preparation method of graphene supercapacitor provided in an embodiment of the present invention, includes the following steps:
Step S210: thin polymer film substrate is fixed on substrate；
More preferred, thin polymer film substrate includes but is not limited to Kapton and polyetherimide film.
The selection of substrate is not particularly limited, those skilled in the art can according to actual needs be adjusted it.
More preferred, the substrate is glass or acrylic board.
It further, further include cleaning substrate step, it may be assumed that substrate is put into and is contained in spirituous container, then container is put
Enter supersonic wave cleaning machine and carry out ultrasonic cleaning, then replaces alcohol to repeat the above steps with water, to remove substrate surface
Dust.
Thin polymer film substrate is fixed on substrate using well known method, further limit is not done to fixing means herein
It is fixed.
Step S220: CO is used2Infrared laser irradiates thin polymer film substrate, obtain patterned graphene anode,
Graphene cathode and interior tab；
The effect of this step is: on the one hand, by thin polymer film substrate surface laser irradiation at the graphite of pre-set dimension
Alkene electrode and interior tab；On the other hand, the thin polymer film substrate surface of insulation is made to form conductive porous stone through laser irradiation
Black alkene electrode and interior tab.
Further, the CO2The power of infrared laser is 2-10mW, and it is 1-5mm/s that laser, which sweeps speed, if laser
Power and scanning speed are less than this range, then can not form grapheme material, if laser power and scanning speed exceed this model
It encloses, then graphene can be peeled off from thin polymer film substrate surface, Structural Faults, can not be used as electrode.
In addition, CO2The power control of infrared laser is swashed in which can guarantee thin polymer film substrate portions in 2-10mW
Light is irradiated into graphene, it may be assumed that close to CO2The part of infrared laser is illuminated at graphene, and close to the polymer thin of substrate
Film substrate is not illuminated at graphene, and ingredient is still the polymer of insulation.
Preferably, the CO2The power of infrared laser is 3mW, and it is 2mm/s, the graphite obtained at this time that laser, which sweeps speed,
Alkene structure is most complete, and it is best to do the supercapacitor electrical property that electrode is prepared using this graphene.
Further, the distance between the graphene anode in monomer capacitor and graphene cathode are 0.1-0.5mm, preferably
For 0.2mm.The size of spacing can be realized by being pre-adjusted the size of laser aperture.If spacing is too small, graphite is easily caused
The interelectrode short circuit of alkene, spacing is excessive, then is unfavorable for the migration of ion between the electrodes, increases filling for graphene supercapacitor
Discharge time.
Step S230: graphene anode, graphene cathode and interior tab are cut out；
Specifically, by thin polymer film substrate along through CO2The patterned graphene that infrared laser irradiates is just
The outer profile of pole, graphene cathode and interior tab is integrally cut；
Step S240: coating electrolyte forms multiple monomer capacitors, wherein adjacent monomer electricity in the multiple monomer capacitor
It is connected between appearance by interior tab；
Further, the electrolyte is colloidal electrolyte, preferably in PVA/ sulfuric acid, PVA/ hydrochloric acid or PVA/ phosphoric acid
It is one or more.It on the one hand can guarantee that electrolyte is adhesively fixed in Graphene electrodes region using the colloidal electrolyte, prevent
On the other hand electrolyte flow eliminates additional diaphragm to interior tab position, simplify preparation process.
Step S250: it is disposably encapsulated after the outer tab of installation, obtains graphene supercapacitor.
Fig. 8 shows a kind of preparation method of the graphene supercapacitor of internal series-connection provided in an embodiment of the present invention,
It is illustrated by taking interdigitated Graphene electrodes as an example below, it should be understood by those skilled in the art that, Graphene electrodes may be used also
Think other shapes.Specifically comprise the following steps:
Step S310: thin polymer film substrate is fixed on substrate；
More preferred, thin polymer film substrate is Kapton or polyetherimide film.
The selection of substrate is not particularly limited, those skilled in the art can according to actual needs be adjusted it.
More preferred, the substrate is glass or acrylic board.
It further, further include cleaning substrate step, it may be assumed that substrate is put into and is contained in spirituous container, then container is put
Enter supersonic wave cleaning machine and carry out ultrasonic cleaning, then replaces alcohol to repeat the above steps with water, to remove substrate surface
Dust.
Thin polymer film substrate is fixed on substrate using well known method, further limit is not done to fixing means herein
It is fixed.
Step S320: CO is used2Infrared laser irradiates thin polymer film substrate, is obtaining concatenated interdigitated graphene just
Pole, graphene cathode and interior tab；
Graphene anode, graphene cathode and interior tab pass through the surface shape of the same thin polymer film substrate of laser irradiation
At.The graphene anode of monomer capacitor and the graphene cathode of the first adjacent monomer capacitor and interior tab are integrally connecteds；It is single
The graphene of the graphene cathode of body capacitance and the second adjacent monomer capacitor anode and interior tab are integrally connecteds.
Further, the CO2The power of infrared laser is 3mW, and it is 2mm/s that laser, which sweeps speed,.
Further, the distance between graphene anode and graphene cathode are 0.2mm.
Step S330: graphene anode, graphene cathode and the interior tab of interdigitated are cut out；
Wherein, the unilateral effective area that electrode can be increased using the Graphene electrodes of interdigitated, to increase graphene
The capacitance of supercapacitor.
Specifically, by thin polymer film substrate along through CO2The graphene for the interdigitated that infrared laser irradiates is just
The outer profile of pole, graphene cathode and interior tab is integrally cut；
Step S340: coating electrolyte forms multiple monomer capacitors, wherein adjacent monomer electricity in the multiple monomer capacitor
It is connected in series between appearance by interior tab；
Further, the electrolyte is colloidal electrolyte, preferably in PVA/ sulfuric acid, PVA/ hydrochloric acid or PVA/ phosphoric acid
It is one or more.It on the one hand can guarantee that electrolyte is adhesively fixed in Graphene electrodes region using the colloidal electrolyte, prevent
On the other hand electrolyte flow eliminates additional diaphragm to interior tab position, simplify preparation process.
Step S350: it is disposably encapsulated after the outer tab of installation, obtains the graphene supercapacitor of internal series-connection.
Wherein, the packaging method and encapsulating material that the present invention uses are it is known in the art that can be aluminum plastic film, PPE
The encapsulating materials such as plastic cement, here, the present invention does not do excessive restriction.
Fig. 9 shows a kind of preparation method of the graphene supercapacitor of internal parallel provided in an embodiment of the present invention,
It is illustrated by taking interdigitated Graphene electrodes as an example below, it should be understood by those skilled in the art that, Graphene electrodes may be used also
Think other shapes.Specifically comprise the following steps:
Step S410: thin polymer film substrate is fixed on substrate；
More preferred, thin polymer film substrate is Kapton or polyetherimide film.
The selection of substrate is not particularly limited, those skilled in the art can according to actual needs be adjusted it.
More preferred, the substrate is glass or acrylic board.
It further, further include cleaning substrate step, it may be assumed that substrate is put into and is contained in spirituous container, then container is put
Enter supersonic wave cleaning machine and carry out ultrasonic cleaning, then replaces alcohol to repeat the above steps with water, to remove substrate surface
Dust.
Thin polymer film substrate is fixed on substrate using well known method, further limit is not done to fixing means herein
It is fixed.Step S420: CO is used2Infrared laser irradiates thin polymer film substrate, obtains interdigitated graphene anode in parallel, stone
Black alkene cathode and interior tab；
Graphene anode, graphene cathode and interior tab are the surface shapes by the same thin polymer film substrate of laser irradiation
At.The graphene anode and interior tab of graphene anode and adjacent monomer capacitor are integrally connecteds in monomer capacitor；Monomer
Graphene cathode and interior tab are integrally connecteds in the graphene cathode and adjacent monomer capacitor of capacitor.
Further, the CO2The power of infrared laser is 3mW, and it is 2mm/s that laser, which sweeps speed,.
Further, the distance between graphene anode and graphene cathode are 0.2mm.
Step S430: graphene anode, graphene cathode and the interior tab of interdigitated are cut out；
The unilateral effective area of electrode can be increased using the Graphene electrodes of interdigitated, to increase the super electricity of graphene
Capacity of condenser.
Specifically, by thin polymer film substrate along through CO2The graphene for the interdigitated that infrared laser irradiates is just
The outer profile of pole, graphene cathode and interior tab is integrally cut；
Step S440: coating electrolyte forms multiple monomer capacitors, wherein adjacent monomer electricity in the multiple monomer capacitor
It is connected in parallel between appearance by interior tab；
Further, the electrolyte is colloidal electrolyte, preferably in PVA/ sulfuric acid, PVA/ hydrochloric acid or PVA/ phosphoric acid
It is one or more.It on the one hand can guarantee that electrolyte is adhesively fixed in Graphene electrodes region using the colloidal electrolyte, prevent
On the other hand electrolyte flow eliminates additional diaphragm, simplifies preparation process to interior tab position.
Step S450: it is disposably encapsulated after the outer tab of installation, obtains the graphene supercapacitor of internal parallel.
Wherein, the packaging method and encapsulating material that the present invention uses are it is known in the art that can be aluminum plastic film, PPE
The encapsulating materials such as plastic cement, here, the present invention does not do excessive restriction.
Figure 10 shows a kind of graphene supercapacitor of internal series-connection-parallel combination provided in an embodiment of the present invention
Preparation method is illustrated by taking interdigitated Graphene electrodes as an example below, it should be understood by those skilled in the art that, graphene
Electrode can also be other shapes.Specifically comprise the following steps:
Step S510: thin polymer film substrate is fixed on substrate；
More preferred, thin polymer film substrate is Kapton or polyetherimide film.
The selection of substrate is not particularly limited, those skilled in the art can according to actual needs be adjusted it.
More preferred, the substrate is glass or acrylic board.
It further, further include cleaning substrate step, it may be assumed that substrate is put into and is contained in spirituous container, then container is put
Enter supersonic wave cleaning machine and carry out ultrasonic cleaning, then replaces alcohol to repeat the above steps with water, to remove substrate surface
Dust.
Thin polymer film substrate is fixed on substrate using well known method, further limit is not done to fixing means herein
It is fixed.
Step S520: CO is used2Infrared laser irradiates thin polymer film substrate, obtains first capacitor device ontology and second
Interdigitated graphene anode, graphene cathode and the interior tab of capacitor body；
Interdigitated graphene anode, graphene cathode and the interior pole of the first capacitor device ontology and the second capacitor body
Ear is formed by the surface of the same thin polymer film substrate of laser irradiation.In the first capacitor device ontology in monomer capacitor
The graphene cathode and interior tab of graphene anode and the first adjacent monomer capacitor are integrally connecteds；The graphene of monomer capacitor
The graphene of cathode and the second adjacent monomer capacitor anode and interior tab are integrally connecteds.It is single in second capacitor body
The graphene anode and interior tab of body capacitance graphene anode and adjacent monomer capacitor are integrally connecteds；The graphite of monomer capacitor
Graphene cathode and interior tab are integrally connecteds in alkene cathode and adjacent monomer capacitor.
Further, the CO2The power of infrared laser is 3mW, and it is 2mm/s that laser, which sweeps speed,.
Further, the distance between graphene anode and graphene cathode are 0.2mm.
Step S530: graphene anode, graphene cathode and the interior tab of interdigitated are cut out；
Specifically, by thin polymer film substrate along through CO2The graphene for the interdigitated that infrared laser irradiates is just
The outer profile of pole, graphene cathode and interior tab is integrally cut；
Step S540: coating electrolyte forms multiple monomer capacitors, wherein adjacent monomer electricity in the multiple monomer capacitor
It is connected in series or in parallel between appearance by interior tab；
Further, the electrolyte is colloidal electrolyte, preferably in PVA/ sulfuric acid, PVA/ hydrochloric acid or PVA/ phosphoric acid
It is one or more.It on the one hand can guarantee that electrolyte is adhesively fixed in Graphene electrodes region using the colloidal electrolyte, prevent
On the other hand electrolyte flow eliminates additional diaphragm to interior tab position, simplify preparation process.
Step S550: it is disposably encapsulated after the outer tab of installation, obtains internal series-connection-parallel connection graphene super capacitor
Device.
Wherein, the packaging method and encapsulating material that the present invention uses are it is known in the art that can be aluminum plastic film, PPE
The encapsulating materials such as plastic cement, here, the present invention does not do excessive restriction.
The preparation method of graphene supercapacitor provided in this embodiment, can effectively improve graphene supercapacitor
Production efficiency, disposably can be completed required Graphene electrodes and interior tab, production technology relatively coating and mask plate work
Skill significantly simplifies, and is readily produced.
In addition, the graphene supercapacitor in the present invention can be used as microelectronic device memory element, miniature electronic
Circuit voltage stabilizing element (such as logistics data tracks), is widely used in every field.
Performance test
The graphene supercapacitor of internal series-connection and/or parallel-connection structure of the invention compared with the existing technology go here and there by middle outside
Connection/parallel-connection structure graphene supercapacitor only need to be encapsulated once compared to preparation process is greatly simplified, save part
Encapsulating material and interior tab Joining Technology；And it is internal after the series connection of multiple monomer capacitors, capacitance is compared to side of the same race
The capacitance of the graphene supercapacitor of the identical non-internal series-connection structure of unilateral effective area of method preparation improves 20~30
Times.
Below by the performance for testing the graphene supercapacitor for confirming the internal series-connection provided through this embodiment
Really it is better than the graphene supercapacitor of non-internal series-connection:
Prepare the graphene supercapacitor of a non-internal series-connection, material, preparation process and its parameter with this hair
The graphene supercapacitor of the bright internal series-connection using above-described embodiment method preparation is identical, and uniquely different is exactly capacitor
Device ontology is a monomer capacitor, and capacitor body is the monomer capacitor of 4 internal series-connections in the embodiment of the present invention.
Wherein, the electrode unilateral side effective area of two kinds of supercapacitors is 30mm2, between graphene positive and negative electrode between
Gap is 0.2mm, and the thin polymer film substrate used is Kapton, and the power of laser is 3mW, and laser sweeps speed and is
2mm/s.Then to the graphene supercapacitor of the graphene supercapacitor of the internal series-connection assembled and non-internal series-connection
Carry out charge-discharge test.
Figure 11 shows the charge and discharge data of the graphene supercapacitor of internal series-connection provided in an embodiment of the present invention,
In, charging and discharging currents 1mA, charging-discharging cycle 262s, charging voltage 2.3V.
According to formula: capacitance=charging and discharging currents × charging-discharging cycle/2 × charging voltage can obtain internal series-connection stone
The capacitor of black alkene supercapacitor is c=1 × 262/2 × 2.3=56.96mF.
Figure 12 shows the charge and discharge data of the graphene supercapacitor of non-internal series-connection, wherein charging and discharging currents
0.2mA, charging-discharging cycle general 55s, charging voltage 2.3V.
According to formula: capacitance=charging and discharging currents × charging-discharging cycle/2 × charging voltage can obtain non-internal series-connection
The capacitor of graphene supercapacitor is c=0.2 × 55/2 × 2.3=2.39mF.
By calculating it is found that the capacitance of the graphene supercapacitor of internal series-connection is the graphene of non-internal series-connection
24 times of the capacitance of supercapacitor.By using internal series-connection structure, graphene supercapacitor is greatly improved
Capacitor, effect is very significant.
It will be appreciated by those skilled in the art that realizing that all or part of step in above-described embodiment method can pass through
Program instructs the related hardware to complete.
It will also be appreciated that apparatus structure shown in attached drawing or embodiment is only schematical, logic knot is indicated
Structure.Wherein, the module shown as separation unit may be or may not be to be physically separated.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (17)
1. a kind of graphene supercapacitor characterized by comprising
Capacitor body, the capacitor body include multiple monomer capacitors and interior tab；
Wherein, it is connected in series between adjacent monomer capacitor by interior tab in the multiple monomer capacitor, the monomer capacitor packet
Include graphene anode, graphene cathode and electrolyte, the graphene anode of the monomer capacitor and the first adjacent monomer capacitor
Graphene cathode passes through interior tab integrally connected, the graphite of the graphene cathode of the monomer capacitor and the second adjacent monomer capacitor
Alkene anode passes through interior tab integrally connected；
Two outer tabs, described two outer tabs are connected with head end monomer capacitor and tail end monomer capacitor respectively；And
Outer packing, the outer packing is for being packaged the capacitor body；
Wherein, the graphene anode, graphene cathode and interior tab are by the same thin polymer film substrate of laser irradiation
What surface was formed.
2. graphene supercapacitor according to claim 1, which is characterized in that electrolyte is colloidal electrolyte.
3. graphene supercapacitor according to claim 2, which is characterized in that the electrolyte include PVA/ sulfuric acid,
PVA/ hydrochloric acid or PVA/ phosphoric acid.
4. graphene supercapacitor according to claim 1, which is characterized in that the thin polymer film substrate is polyamides
Imines film or polyetherimide film.
5. graphene supercapacitor according to claim 1, which is characterized in that the graphene anode and graphene are negative
Any one of interdigitated, parallel strip, helical form or combinations thereof shape is presented in pole.
6. graphene supercapacitor according to claim 1-5, which is characterized in that the graphene anode and
The distance between graphene cathode is 0.1-0.5mm.
7. graphene supercapacitor according to claim 6, which is characterized in that the graphene anode and graphene are negative
The distance between pole is 0.2mm.
8. a kind of graphene supercapacitor characterized by comprising
Capacitor body, the capacitor body include multiple monomer capacitors and interior tab；
Wherein, it is connected in parallel between adjacent monomer capacitor by interior tab in the multiple monomer capacitor, the monomer capacitor packet
Include graphene anode, graphene cathode and electrolyte, the graphene anode of the monomer capacitor and the graphite of adjacent monomer capacitor
For alkene anode by interior tab integrally connected, the graphene cathode of the monomer capacitor and the graphene cathode of adjacent monomer capacitor are logical
Cross interior tab integrally connected；
Two outer tabs, described two outer tabs are connected with head end monomer capacitor and tail end monomer capacitor respectively；And
Outer packing, the outer packing is for being packaged the capacitor body
Wherein, the graphene anode, graphene cathode and interior tab are by the same thin polymer film substrate of laser irradiation
What surface was formed.
9. graphene supercapacitor according to claim 8, which is characterized in that the thin polymer film substrate is polyamides
Imines film or polyetherimide film.
10. according to the described in any item graphene supercapacitors of claim 8-9, which is characterized in that the graphene anode
Any one of interdigitated, parallel strip, helical form or combinations thereof shape is presented with graphene cathode.
11. a kind of graphene supercapacitor, including capacitor body, which is characterized in that the capacitor body is wanted for right
Ask any one of capacitor body and the claim 8-10 of any one of 1-7 graphene supercapacitor graphene super
The combination of the capacitor body of capacitor.
12. a kind of preparation method of such as described in any item graphene supercapacitors of claim 1-11, which is characterized in that packet
It includes:
(1) thin polymer film substrate is fixed on substrate；
(2) CO is used2Infrared laser irradiates thin polymer film substrate, obtain patterned graphene anode, graphene cathode and
Interior tab；
(3) graphene anode, graphene cathode and interior tab are cut out；
(4) coating electrolyte forms multiple monomer capacitors, wherein passing through between adjacent monomer capacitor in the multiple monomer capacitor
Interior tab connection；
(5) it is disposably encapsulated after outer tab being installed, obtains graphene supercapacitor.
13. preparation method according to claim 12, which is characterized in that wherein, patterned graphite described in step (2)
Alkene anode, graphene cathode and interior tab include that the graphene anode of monomer capacitor and the graphene of the first adjacent monomer capacitor are born
By interior tab integrally connected, the graphene anode of the graphene cathode of monomer capacitor and the second adjacent monomer capacitor passes through interior for pole
Tab integrally connected.
14. preparation method according to claim 12, which is characterized in that wherein, patterned graphite described in step (2)
Alkene anode, graphene cathode and interior tab include that the graphene anode of monomer capacitor and the graphene anode of adjacent monomer capacitor lead to
Interior tab integrally connected is crossed, the graphene cathode of monomer capacitor and the graphene cathode of adjacent monomer capacitor pass through interior tab one
Connection.
15. preparation method according to claim 12, which is characterized in that the thin polymer film substrate is that polyimides is thin
Film or polyetherimide film.
16. the described in any item preparation methods of 2-15 according to claim 1, which is characterized in that the CO2The function of infrared laser
Rate is 2-10mW, and it is 1-5mm/s that laser, which sweeps speed,.
17. preparation method according to claim 16, which is characterized in that the CO2The power of infrared laser is 3mW, is swashed
It is 2mm/s that light device, which sweeps speed,.
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| CN106847536A (en) * | 2017-01-05 | 2017-06-13 | 戴雪青 | A kind of preparation method of Graphene ultracapacitor |
| CN107206741A (en) * | 2014-11-26 | 2017-09-26 | 威廉马歇莱思大学 | Graphene mixing material for the induced with laser of electronic installation |
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| CN107293409B (en) * | 2017-08-21 | 2018-09-04 | 洛阳师范学院 | A kind of water-fastness full-solid-state minisize ultracapacitor and preparation method thereof |
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| CN105914045A (en) * | 2016-04-08 | 2016-08-31 | 纳智源科技（唐山）有限责任公司 | Super capacitor |
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