CN207966756U - A kind of graphene ultracapacitor - Google Patents
A kind of graphene ultracapacitor Download PDFInfo
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- CN207966756U CN207966756U CN201820055810.0U CN201820055810U CN207966756U CN 207966756 U CN207966756 U CN 207966756U CN 201820055810 U CN201820055810 U CN 201820055810U CN 207966756 U CN207966756 U CN 207966756U
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- 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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Abstract
The utility model is related to the preparation field of electronic component, more particularly to a kind of graphene ultracapacitor.Including：Capacitor body, the capacitor body include multiple monomer capacitances and interior lug；Wherein, it is connected in series with by interior lug between adjacent monomer capacitance in the multiple monomer capacitance, the monomer capacitance includes graphene anode, graphene cathode and electrolyte, for the graphene cathode of the graphene anode of the monomer capacitance and the first adjacent monomer capacitance by interior lug integrally connected, the graphene anode of the graphene cathode of the monomer capacitance and the second adjacent monomer capacitance passes through interior lug integrally connected；Two outer lugs, described two outer lugs are connected with head end monomer capacitance and tail end monomer capacitance respectively；And outer packing, the outer packing is for being packaged the capacitor body.
Description
Technical field
The utility model is related to the preparation field of electronic component, more particularly to a kind of graphene ultracapacitor.
Background technology
Ultracapacitor 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 are the advantages of high-energy and high-specific-power, i.e. charge and discharge time only tens of seconds, power density to be higher by 10- compared with accumulator
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.
At after slurry coated in preparing in conductive substrates.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 former by carbon
Son is arranged according to hexagon and carbon molecules made of being connected with each other, and structure is highly stable, and with high conductivity, high-ductility
The features such as degree, high intensity, extra specific surface area so that the ultracapacitor using graphene as electrode material shows excellent
Performance is more suitable for the storage of energy.
In order to adjust capacity and the pressure resistance of capacitor module, 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 lug.
However, the graphene ultracapacitor for being prepared internal series/parallel using laser irradiation at present is but rarely reported.
Utility model content
In order to solve the above-mentioned technical problem, the utility model provides a kind of graphene ultracapacitor.
One side according to the present utility model provides a kind of graphene ultracapacitor, including：
Capacitor body, the capacitor body include multiple monomer capacitances and interior lug；
Wherein, it is connected in series with by interior lug between adjacent monomer capacitance in the multiple monomer capacitance, the monomer electricity
Appearance includes graphene anode, graphene cathode and electrolyte, and the graphene anode of the monomer capacitance and the first adjacent monomer are electric
The graphene cathode of appearance by interior lug integrally connected, the graphene cathode of the monomer capacitance and the second adjacent monomer capacitance
Graphene anode passes through interior lug integrally connected；
Two outer lugs, described two outer lugs are connected with head end monomer capacitance and tail end monomer capacitance 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 lug 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.
Other side according to the present utility model provides a kind of graphene ultracapacitor, including：
Capacitor body, the capacitor body include multiple monomer capacitances and interior lug, wherein the multiple monomer electricity
It is connected in parallel by interior lug between adjacent monomer capacitance in appearance, the monomer capacitance includes graphene anode, graphene cathode
And electrolyte, the graphene anode of the monomer capacitance and the graphene anode of adjacent monomer capacitance are integrally connected by interior lug
It connects, the graphene cathode of the monomer capacitance and the graphene cathode of adjacent monomer capacitance pass through interior lug integrally connected；
Two outer lugs, described two outer lugs are connected with head end monomer capacitance and tail end monomer capacitance respectively；And
Outer packing, the outer packing is for being packaged the capacitor body.
Optionally, the graphene anode, graphene cathode and interior lug 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.
Another aspect according to the present utility model provides a kind of graphene ultracapacitor, including capacitor body, institute
State the combination that capacitor body is the first capacitor body and the second capacitor body；
Wherein, the first capacitor body includes multiple monomer capacitances and interior lug；Adjacent list in the multiple monomer capacitance
It is connected in series with by interior lug between body capacitance, the monomer capacitance includes graphene anode, graphene cathode and electrolyte, institute
The graphene cathode of the graphene anode and the first adjacent monomer capacitance of stating monomer capacitance passes through interior lug integrally connected, the list
The graphene anode of the graphene cathode of body capacitance and the second adjacent monomer capacitance passes through interior lug integrally connected；
Wherein, the second capacitor body includes multiple monomer capacitances and interior lug；Wherein, phase in the multiple monomer capacitance
It is connected in parallel by interior lug between adjacent monomer capacitance, the monomer capacitance includes graphene anode, graphene cathode and electrolysis
Liquid, the graphene anode of the monomer capacitance and the graphene anode of adjacent monomer capacitance are described by interior lug integrally connected
The graphene cathode of monomer capacitance and the graphene cathode of adjacent monomer capacitance pass through interior lug integrally connected.
The utility model prepares graphene using laser irradiation, introduces the structure of internal series/parallel to realize capacitor
The capacity regulating of module.Compared with prior art, the utility model has the advantages that：
1. preparing Graphene electrodes without slurry feedstocks such as additional conductive agent, adhesives；
2. being not necessarily to additional diaphragm and interior lug, Graphene electrodes are integrally formed simultaneously with interior lug；
3. prepared by electrode and capacitor package technique relatively coating and mask plate technique significantly simplify, it is readily produced.
Description of the drawings
Fig. 1 shows the structural schematic diagram of graphene ultracapacitor；
After the graphene ultracapacitor removal outer packing of the internal series-connection of the utility model embodiment offer
Structural schematic diagram；
Wherein, 11 be outer lug, and 12 be electrolyte, and 13 be Graphene electrodes, and 14 be interior lug；
Fig. 3 shows the structural representation of the graphene ultracapacitor for the internal parallel that the utility model embodiment provides
Figure；
After Fig. 4 shows the graphene ultracapacitor removal outer packing for the internal parallel that the utility model embodiment provides
Structural schematic diagram；
Wherein, 21 be outer lug, and 22 be electrolyte, and 23 be Graphene electrodes, and 24 be interior lug；
Fig. 5 shows the structure of the graphene ultracapacitor for internal series-connection-parallel connection that the utility model embodiment provides
Schematic diagram；
Fig. 6 shows the preparation method flow chart for the graphene ultracapacitor that the utility model embodiment provides；
Fig. 7 shows the preparation method stream of the graphene ultracapacitor for the internal series-connection that the utility model embodiment provides
Cheng Tu；
Fig. 8 shows the preparation method stream of the graphene ultracapacitor for the internal parallel that the utility model embodiment provides
Cheng Tu；
Fig. 9 shows the graphene ultracapacitor for internal series-connection-parallel combination that the utility model embodiment provides
Preparation method flow chart；
Figure 10 shows the charge and discharge number of the graphene ultracapacitor for the internal series-connection that the utility model embodiment provides
According to；And
Figure 11 shows the charge and discharge data of the graphene ultracapacitor of non-internal series-connection.
Specific implementation mode
It is new to this practicality by following specific implementation modes to fully understand the purpose, feature and effect of the utility model
Type elaborates, but the utility model is not restricted to this.
One side according to the present utility model provides a kind of graphene ultracapacitor, as shown in Figure 1, including：
Capacitor body 101, the capacitor body include multiple monomer capacitances 102 and interior lug 103；
Wherein, it is connected in series with by interior lug 103 between adjacent monomer capacitance 102 in the multiple monomer capacitance, it is described
Monomer capacitance 102 includes graphene anode, graphene cathode and electrolyte, the graphene anode of the monomer capacitance 102 and the
For the graphene cathode of one adjacent monomer capacitance 102 by 103 integrally connected of interior lug, the graphene of the monomer capacitance 102 is negative
The graphene anode of pole and the second adjacent monomer capacitance 102 is connected by interior lug one 103；
Two outer lugs 104, described two outer lugs 104 respectively with head end monomer capacitance 102 and tail end monomer capacitance 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
It is one or more in PVA/ phosphoric acid.It on the one hand can ensure that electrolyte is adhesively fixed in graphene electricity using the colloidal electrolyte
Polar region domain prevents electrolyte flow to interior lug position, on the other hand eliminates additional diaphragm, simplifies preparation process.This field
Technical staff can also be by reasonably attempting that other kinds of electrolyte, the utility model is used to be not especially limited this.
Wherein, graphene anode, graphene cathode and the interior lug 103 of the monomer capacitance 102 are to pass through laser irradiation
What the surface of same thin polymer film substrate was formed.The graphene ultracapacitor of the utility model, without additional interior lug
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 nano level 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, interior lug is can also be used as 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 ultracapacitor.
Further, the distance between graphene anode and graphene cathode are 0.1-0.5mm in the monomer capacitance,
Preferably, the distance between the graphene anode and graphene cathode are 0.2mm.If spacing is too small, graphene is easily caused
Interelectrode short circuit, spacing is excessive, then is unfavorable for the migration of ion between the electrodes, increases the charge and discharge of graphene ultracapacitor
The electric time.
Further, quantity >=2 of monomer capacitance 102 can be specifically adjusted according to actual needs, not done herein specific
It limits.
Fig. 2 shows the super electricity of graphene for removing outer packing for the internal series-connection that the utility model embodiment provides
The electrode shape of the structural schematic diagram of container, graphene is interdigitated, it will be appreciated to those of skill in the art that graphene is super
The electrode of the graphene of grade capacitor may be other shapes.Wherein, 11 be outer lug, and 12 be electrolyte, and 13 be graphite
Alkene electrode, 14 be interior lug；Wherein, which includes 4 monomer capacitances and 3 interior lugs 14, wherein 4 monomers
It is connected in series with by interior lug 14 between adjacent monomer capacitance in capacitance, wherein the monomer capacitance includes Graphene electrodes 13
With electrolyte 12；Capacitor body head and the tail both ends are connect with an outer lug 11 respectively.
The graphene ultracapacitor of internal series-connection provided by the utility model, Graphene electrodes without additional conductive agent,
Prepared by the slurry feedstocks such as adhesive, simple for process, and capacitor body is not necessarily to additional diaphragm and interior lug, Graphene electrodes material
Material and interior lug integrally connected, are greatly saved material.Another aspect according to the present utility model provides a kind of graphene
Ultracapacitor, as shown in figure 3, including：
Capacitor body 201, the capacitor body include multiple monomer capacitances 202 and interior lug 203；
Wherein, it is connected in parallel by interior lug 203 between adjacent monomer capacitance 202 in the multiple monomer capacitance 202,
The monomer capacitance 202 includes graphene anode, graphene cathode and electrolyte, the graphene anode of the monomer capacitance 202
With the graphene anode of adjacent monomer capacitance by 203 integrally connected of interior lug, the graphene cathode of the monomer capacitance 202 and
The graphene cathode of adjacent monomer capacitance 202 passes through 203 integrally connected of interior lug；
Two outer lugs 204, described two outer lugs 204 respectively with head end monomer capacitance 202 and tail end monomer capacitance 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 lug 203 are to pass through laser in the monomer capacitance 202
Irradiate the surface formation of same thin polymer film substrate.The graphene ultracapacitor of the utility model, without additionally interior
Lug 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 nano level 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, interior lug is can also be used as and use, greatly improve the chemical property of capacitor.
Further, 202 graphene anodes of the monomer capacitance 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 ultracapacitor.
Fig. 4 shows the graphene ultracapacitor of the removing outer packing for the internal parallel that the utility model embodiment provides
Structural schematic diagram, Graphene electrodes shape be interdigitated, it will be appreciated to those of skill in the art that graphene super capacitor
The Graphene electrodes of device may be other shapes.Wherein, 21 be outer lug, and 22 be electrolyte, and 23 be Graphene electrodes, 24
For interior lug；Wherein, which includes 2 monomer capacitances and 2 interior lugs 24, wherein in 2 monomer capacitances
It is connected in parallel by interior lug 24 between adjacent monomer capacitance, wherein the monomer capacitance includes Graphene electrodes 23 and electrolysis
Liquid 22；Capacitor body head and the tail both ends are connect with an outer lug 21 respectively.
The graphene ultracapacitor of internal parallel provided by the utility model, Graphene electrodes without additional conductive agent,
Prepared by the slurry feedstocks such as adhesive, simple for process, and capacitor body is not necessarily to additional diaphragm and interior lug, Graphene electrodes material
Material and interior lug integrally connected, are greatly saved material.
Another aspect according to the present utility model provides a kind of graphene ultracapacitor, as shown in figure 5, including electricity
Vessel, the capacitor body are the combination of the first capacitor body 301 and the second capacitor body 401.
Further, first capacitor body 301 includes multiple monomer capacitances 302 and interior lug 303, wherein institute
It states in multiple monomer capacitances and is connected in series with by interior lug 303 between adjacent monomer capacitance 302, the monomer capacitance 302 includes
Graphene anode, graphene cathode and electrolyte, the graphene anode of the monomer capacitance 302 and the first adjacent monomer capacitance
302 graphene cathode passes through 303 integrally connected of interior lug, the graphene cathode of the monomer capacitance 302 and the second adjacent list
The graphene anode of body capacitance 302 passes through 303 integrally connected of interior lug；Second capacitor body 401 includes multiple monomers
Capacitance 402 and interior lug 403, wherein pass through interior lug 403 between adjacent monomer capacitance 402 in the multiple monomer capacitance
It is connected in parallel, the monomer capacitance 402 includes graphene anode, graphene cathode and electrolyte, the stone of the monomer capacitance 402
The graphene anode of black alkene anode and adjacent monomer capacitance 402 by 403 integrally connected of interior lug, the monomer capacitance 402
The graphene cathode of graphene cathode and adjacent monomer capacitance 402 passes through 403 integrally connected of interior lug.
Wherein, the number of the first capacitor body of the utility model pair and the second capacitor body, the number of monomer capacitance
And the connection relation of monomer capacitance is not particularly limited, those skilled in the art can according to actual needs be adjusted it.
Further, the graphene anode, graphene cathode and interior lug 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.
Another aspect according to the present utility model provides a kind of preparation method of graphene ultracapacitor, such as Fig. 6 institutes
Show, including：
Step S110：Thin polymer film substrate is fixed on base material；
Step S120：Using CO2Infrared laser irradiates thin polymer film substrate, obtain patterned graphene anode,
Graphene cathode and interior lug；
Step S130：Cut out graphene anode, graphene cathode and interior lug；
Step S140：Coating electrolyte forms multiple monomer capacitances, wherein adjacent monomer electricity in the multiple monomer capacitance
It is connected by interior lug between appearance；
Step S150：It is disposably encapsulated after the outer lug of installation, obtains graphene ultracapacitor.
The preparation method of graphene ultracapacitor provided by the utility model, using CO2Infrared laser irradiation polymerization
The mode of object film-substrate prepares graphene anode, graphene cathode and interior lug.Predefined parameter can be passed through before laser irradiation
(such as distance between Graphene electrodes and interior lug integrally connected situation, graphene positive and negative anodes) is come designing with predetermined shape
Graphene electrodes and interior lug.Wherein, the shape of Graphene electrodes include but not limited to interdigitated, parallel strip, helical form and
Any one of a combination thereof shape.
A kind of preparation method for graphene ultracapacitor that the utility model embodiment provides, includes the following steps：
Step S210：Thin polymer film substrate is fixed on base material；
More preferred, thin polymer film substrate includes but not limited to Kapton and polyetherimide film.
The selection of base material is not particularly limited, those skilled in the art can according to actual needs be adjusted it.
More preferred, the base material is glass or acrylic board.
Further, further include cleaning base material step, i.e.,：Base material 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 using well known method on base material, further limit is not done to fixing means herein
It is fixed.
Step S220：Using CO2Infrared laser irradiates thin polymer film substrate, obtain patterned graphene anode,
Graphene cathode and interior lug；
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 lug；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 lug.
Further, the CO2The power of infrared laser is 2-10mW, and it is 1-5mm/s that laser, which sweeps speed, if laser
Device power and sweep speed are less than this range, then can not form grapheme material, if laser power and sweep speed exceed this
Range, 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 ensure thin polymer film substrate portions in 2-10mW
At graphene, i.e., light irradiates：Close to CO2The part of infrared laser is illuminated at graphene, and close to the polymer thin of base material
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 ultracapacitor electrical property that electrode is prepared using this graphene.
Further, the distance between the graphene anode in monomer capacitance and graphene cathode are 0.1-0.5mm, excellent
It is selected as 0.2mm.The size of spacing can be realized by being pre-adjusted the size of laser aperture.If spacing is too small, stone is easily caused
The black interelectrode short circuit of alkene, spacing is excessive, then is unfavorable for the migration of ion between the electrodes, increases graphene ultracapacitor
The charge and discharge time.
Step S230：Cut out graphene anode, graphene cathode and interior lug；
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 lug is integrally cut；
Step S240：Coating electrolyte forms multiple monomer capacitances, wherein adjacent monomer electricity in the multiple monomer capacitance
It is connected by interior lug between appearance；
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 ensure that electrolyte is adhesively fixed in Graphene electrodes region, prevents using the colloidal electrolyte
Only on the other hand electrolyte flow eliminates additional diaphragm to interior lug position, simplifies preparation process.
Step S250：It is disposably encapsulated after the outer lug of installation, obtains graphene ultracapacitor.
Fig. 7 shows a kind of preparation side of the graphene ultracapacitor for internal series-connection that the utility model embodiment provides
Method is illustrated by taking interdigitated Graphene electrodes as an example below, it should be understood by those skilled in the art that, Graphene electrodes are also
Can be other shapes.Specifically comprise the following steps：
Step S310：Thin polymer film substrate is fixed on base material；
More preferred, thin polymer film substrate is Kapton or polyetherimide film.
The selection of base material is not particularly limited, those skilled in the art can according to actual needs be adjusted it.
More preferred, the base material is glass or acrylic board.
Further, further include cleaning base material step, i.e.,：Base material 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 using well known method on base material, further limit is not done to fixing means herein
It is fixed.
Step S320：Using CO2Infrared laser irradiates thin polymer film substrate, is obtaining concatenated interdigitated graphene just
Pole, graphene cathode and interior lug；
The surface shape that graphene anode, graphene cathode and interior lug pass through the same thin polymer film substrate of laser irradiation
At.The graphene anode of monomer capacitance and the graphene cathode of the first adjacent monomer capacitance and interior lug are integrally connecteds；It is single
The graphene of the graphene cathode of body capacitance and the second adjacent monomer capacitance anode and interior lug 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：Cut out graphene anode, graphene cathode and the interior lug of interdigitated；
Wherein, the unilateral effective area that electrode can be increased using the Graphene electrodes of interdigitated, to increase graphene
The capacitance of ultracapacitor.
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 lug is integrally cut；
Step S340：Coating electrolyte forms multiple monomer capacitances, wherein adjacent monomer electricity in the multiple monomer capacitance
It is connected in series with by interior lug between appearance；
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 ensure that electrolyte is adhesively fixed in Graphene electrodes region, prevents using the colloidal electrolyte
Only on the other hand electrolyte flow eliminates additional diaphragm to interior lug position, simplifies preparation process.
Step S350：It is disposably encapsulated after the outer lug of installation, obtains the graphene ultracapacitor of internal series-connection.
Wherein, the packaging method and encapsulating material that the utility model uses be it is known in the art that can for aluminum plastic film,
The encapsulating materials such as PPE plastic cement, here, the utility model does not do excessive restriction.
Fig. 8 shows a kind of preparation side of the graphene ultracapacitor for internal parallel that the utility model embodiment provides
Method is illustrated by taking interdigitated Graphene electrodes as an example below, it should be understood by those skilled in the art that, Graphene electrodes are also
Can be other shapes.Specifically comprise the following steps：
Step S410：Thin polymer film substrate is fixed on base material；
More preferred, thin polymer film substrate is Kapton or polyetherimide film.
The selection of base material is not particularly limited, those skilled in the art can according to actual needs be adjusted it.
More preferred, the base material is glass or acrylic board.
Further, further include cleaning base material step, i.e.,：Base material 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 using well known method on base material, further limit is not done to fixing means herein
It is fixed.Step S420：Using CO2Infrared laser irradiates thin polymer film substrate, obtains interdigitated graphene anode in parallel, stone
Black alkene cathode and interior lug；
Graphene anode, graphene cathode and interior lug are the surface shapes by the same thin polymer film substrate of laser irradiation
At.The graphene anode and interior lug of graphene anode and adjacent monomer capacitance are integrally connecteds in monomer capacitance；Monomer
Graphene cathode and interior lug are integrally connecteds in the graphene cathode and adjacent monomer capacitance of capacitance.
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：Cut out graphene anode, graphene cathode and the interior lug of interdigitated；
The unilateral effective area that 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 lug is integrally cut；
Step S440：Coating electrolyte forms multiple monomer capacitances, wherein adjacent monomer electricity in the multiple monomer capacitance
It is connected in parallel by interior lug between appearance；
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 ensure that electrolyte is adhesively fixed in Graphene electrodes region, prevents using the colloidal electrolyte
Only on the other hand electrolyte flow eliminates additional diaphragm, simplifies preparation process to interior lug position.
Step S450：It is disposably encapsulated after the outer lug of installation, obtains the graphene ultracapacitor of internal parallel.
Wherein, the packaging method and encapsulating material that the utility model uses be it is known in the art that can for aluminum plastic film,
The encapsulating materials such as PPE plastic cement, here, the utility model does not do excessive restriction.
Fig. 9 shows a kind of graphene super capacitor for internal series-connection-parallel combination that the utility model embodiment provides
The preparation method of device is illustrated by taking interdigitated Graphene electrodes as an example below, it should be understood by those skilled in the art that, stone
Black alkene electrode can also be other shapes.Specifically comprise the following steps：
Step S510：Thin polymer film substrate is fixed on base material；
More preferred, thin polymer film substrate is Kapton or polyetherimide film.
The selection of base material is not particularly limited, those skilled in the art can according to actual needs be adjusted it.
More preferred, the base material is glass or acrylic board.
Further, further include cleaning base material step, i.e.,：Base material 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 using well known method on base material, further limit is not done to fixing means herein
It is fixed.
Step S520：Using CO2Infrared laser irradiates thin polymer film substrate, obtains the first capacitor body and second
Interdigitated graphene anode, graphene cathode and the interior lug of capacitor body；
Interdigitated graphene anode, graphene cathode and the interior pole of first capacitor body and the second capacitor body
Ear is formed by the surface of the same thin polymer film substrate of laser irradiation.In first capacitor body in monomer capacitance
The graphene cathode and interior lug of graphene anode and the first adjacent monomer capacitance are integrally connecteds；The graphene of monomer capacitance
The graphene of cathode and the second adjacent monomer capacitance anode and interior lug are integrally connecteds.It is single in second capacitor body
The graphene anode and interior lug of body capacitance graphene anode and adjacent monomer capacitance are integrally connecteds；The graphite of monomer capacitance
Graphene cathode and interior lug are integrally connecteds in alkene cathode and adjacent monomer capacitance.
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：Cut out graphene anode, graphene cathode and the interior lug of interdigitated；
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 lug is integrally cut；
Step S540：Coating electrolyte forms multiple monomer capacitances, wherein adjacent monomer electricity in the multiple monomer capacitance
It is connected in series or in parallel by interior lug between appearance；
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 ensure that electrolyte is adhesively fixed in Graphene electrodes region, prevents using the colloidal electrolyte
Only on the other hand electrolyte flow eliminates additional diaphragm to interior lug position, simplifies preparation process.
Step S550：It is disposably encapsulated after the outer lug of installation, obtains the graphene super capacitor of internal series-connection-parallel connection
Device.
Wherein, the packaging method and encapsulating material that the utility model uses be it is known in the art that can for aluminum plastic film,
The encapsulating materials such as PPE plastic cement, here, the utility model does not do excessive restriction.
The preparation method of graphene ultracapacitor provided in this embodiment, can effectively improve graphene ultracapacitor
Production efficiency, disposably can be completed required Graphene electrodes and interior lug, production technology relatively coating and mask plate work
Skill significantly simplifies, and is readily produced.
In addition, the graphene ultracapacitor in the utility model can be used as microelectronic device memory element, it is miniature
Electronic circuit voltage stabilizing element (such as logistics data tracks), is widely used in every field.
Performance test
The internal series-connection of the utility model and/or the graphene ultracapacitor of parallel-connection structure China and foreign countries compared with the existing technology
The graphene ultracapacitor of portion's serial/parallel structure only need to be encapsulated once, be saved compared to preparation process is greatly simplified
Partial encapsulation material and interior lug Joining Technology；And it is internal after the series connection of multiple monomer capacitances, capacitance is compared to same
The capacitance of the graphene ultracapacitor of the identical non-internal series-connection structure of unilateral effective area prepared by kind method improves 20
~30 times.
The performance for the graphene ultracapacitor of internal series-connection for confirming to provide through this embodiment below by experiment
Really it is better than the graphene ultracapacitor of non-internal series-connection：
Prepare the graphene ultracapacitor of a non-internal series-connection, material, preparation process and its parameter with this reality
Graphene ultracapacitor with the novel internal series-connection prepared using above-described embodiment method is identical, unique different to be exactly
Capacitor body is a monomer capacitance, and capacitor body is the monomer electricity of 4 internal series-connections in the utility model embodiment
Hold.
Wherein, the electrode unilateral side effective area of two kinds of ultracapacitors 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 ultracapacitor of the graphene ultracapacitor and non-internal series-connection of the internal series-connection assembled
Carry out charge-discharge test.
Figure 10 shows the charge and discharge number of the graphene ultracapacitor for the internal series-connection that the utility model embodiment provides
According to, wherein 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 capacitance of black alkene ultracapacitor is c=1 × 262/2 × 2.3=56.96mF.
Figure 11 shows the charge and discharge data of the graphene ultracapacitor 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 capacitance of graphene ultracapacitor is c=0.2 × 55/2 × 2.3=2.39mF.
By calculating it is found that the capacitance of the graphene ultracapacitor of internal series-connection is the graphene of non-internal series-connection
24 times of the capacitance of ultracapacitor.By using internal series-connection structure, graphene ultracapacitor is greatly improved
Capacitance, effect is very notable.
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 separating component may be or may not be to be physically separated.
Obviously, those skilled in the art can carry out the utility model various modification and variations without departing from this practicality
Novel spirit and scope.If in this way, these modifications and variations of the present invention belong to the utility model claims and
Within the scope of its equivalent technologies, then the utility model is also intended to include these modifications and variations.
Claims (15)
1. a kind of graphene ultracapacitor, which is characterized in that including：
Capacitor body, the capacitor body include multiple monomer capacitances and interior lug；
Wherein, it is connected in series with by interior lug between adjacent monomer capacitance in the multiple monomer capacitance, the monomer capacitance packet
Include graphene anode, graphene cathode and electrolyte, the graphene anode of the monomer capacitance and the first adjacent monomer capacitance
Graphene cathode passes through interior lug integrally connected, the graphite of the graphene cathode of the monomer capacitance and the second adjacent monomer capacitance
Alkene anode passes through interior lug integrally connected；
Two outer lugs, described two outer lugs are connected with head end monomer capacitance and tail end monomer capacitance respectively；And
Outer packing, the outer packing is for being packaged the capacitor body.
2. graphene ultracapacitor according to claim 1, which is characterized in that electrolyte is colloidal electrolyte.
3. graphene ultracapacitor according to claim 1 or 2, which is characterized in that the graphene anode, graphene
Cathode and interior lug are formed by the surface of the same thin polymer film substrate of laser irradiation.
4. graphene ultracapacitor according to claim 3, which is characterized in that the thin polymer film substrate is polyamides
Imines film or polyetherimide film.
5. according to claim 1-2,4 any one of them graphene ultracapacitors, 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.
6. graphene ultracapacitor according to claim 3, 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.
7. according to any one of them graphene ultracapacitor of claim 1-2,4,6, which is characterized in that the graphene is just
The distance between pole and graphene cathode are 0.1-0.5mm.
8. graphene ultracapacitor according to claim 3, which is characterized in that the graphene anode and graphene are negative
The distance between pole is 0.1-0.5mm.
9. graphene ultracapacitor according to claim 5, which is characterized in that the graphene anode and graphene are negative
The distance between pole is 0.1-0.5mm.
10. graphene ultracapacitor according to claim 7, which is characterized in that the graphene anode and graphene
The distance between cathode is 0.2mm.
11. a kind of graphene ultracapacitor, which is characterized in that including：
Capacitor body, the capacitor body include multiple monomer capacitances and interior lug；
Wherein, it is connected in parallel by interior lug between adjacent monomer capacitance in the multiple monomer capacitance, the monomer capacitance packet
Include graphene anode, graphene cathode and electrolyte, the graphite of the graphene anode and adjacent monomer capacitance of the monomer capacitance
For alkene anode by interior lug integrally connected, the graphene cathode of the monomer capacitance and the graphene cathode of adjacent monomer capacitance are logical
Cross interior lug integrally connected；
Two outer lugs, described two outer lugs are connected with head end monomer capacitance and tail end monomer capacitance respectively；And
Outer packing, the outer packing is for being packaged the capacitor body.
12. graphene ultracapacitor according to claim 11, which is characterized in that the graphene anode, graphene
Cathode and interior lug are formed by the surface of the same thin polymer film substrate of laser irradiation.
13. graphene ultracapacitor according to claim 12, which is characterized in that the thin polymer film substrate is poly-
Imide membrane or polyetherimide film.
14. according to claim 11-13 any one of them graphene ultracapacitors, which is characterized in that the graphene is just
Any one of interdigitated, parallel strip, helical form or combinations thereof shape is presented in pole and graphene cathode.
15. a kind of graphene ultracapacitor, including capacitor body, which is characterized in that the capacitor body is wanted for right
Ask any one of capacitor body and the claim 11-14 of any one of 1-10 graphene ultracapacitors graphenes super
The combination of the capacitor body of grade capacitor.
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| CN111029162A (en) * | 2019-12-30 | 2020-04-17 | 中国科学院合肥物质科学研究院 | Graphene/polypyrrole composite electrode material, preparation and application thereof in super capacitor |
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2018
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111029162A (en) * | 2019-12-30 | 2020-04-17 | 中国科学院合肥物质科学研究院 | Graphene/polypyrrole composite electrode material, preparation and application thereof in super capacitor |
| CN111029162B (en) * | 2019-12-30 | 2023-03-24 | 中国科学院合肥物质科学研究院 | Graphene/polypyrrole composite electrode material, preparation and application thereof in super capacitor |
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