CN105368045B - Graphene polypyrrole composite aerogel and preparation method and application - Google Patents
Graphene polypyrrole composite aerogel and preparation method and application Download PDFInfo
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- CN105368045B CN105368045B CN201410425289.1A CN201410425289A CN105368045B CN 105368045 B CN105368045 B CN 105368045B CN 201410425289 A CN201410425289 A CN 201410425289A CN 105368045 B CN105368045 B CN 105368045B
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Abstract
The invention discloses a kind of graphene polypyrrole composite aerogel and preparation method and application.The features such as aeroge is mainly compounded to form by graphene and polypyrrole, and has suitable aperture, macroporosity, high-specific surface area, low-density, and excellent electrical conductivity is 0.1 ~ 100 S/m and high storage modulus；Its preparation method includes：Using graphene oxide and pyrrole monomer as raw material, graphene oxide is dispersed into the dispersion liquid of stable homogeneous under acid or neutral environment first, then graphene oxide is well mixed with pyrroles by mechanical agitation and ultrasound, gel is stood at room temperature, is finally dried to obtain graphene polypyrrole composite aerogel.The present invention obtains aeroge high comprehensive performance, can as the application such as electrode material for super capacitor, fragrant organic dye adsorbent namely, and preparation technology simply, low energy consumption, it is green, suitable for mass producing.
Description
Technical field
Present invention relates particularly to a kind of graphene-polypyrrole composite aerogel and preparation method and application, belong to nanometer
Porous material technical field.
Background technology
Graphene is with Sp2The cellular crystal structure that the carbon atom close-packed arrays of hydridization connection form, its thickness are only
The thickness (0.34nm) of one carbon atomic layer, it is the most thin material having now been found that.Graphene be envisioned that as by carbon atom and
The atom grid that its covalent bond is formed.The preparation method of graphene is gradually extended by initial tear tape method/slight rubbing manipulation
To other various methods, such as silicon carbide epitaxial growth, metal surface growth, colloidal chemistry synthesis etc..The knot of graphene
Structure is highly stable, and carbon-carbon bond is onlyThe connection between carbon atom inside graphene is very flexible, when application external force is in stone
During black alkene, carbon atom face meeting flexural deformation so that carbon atom need not be rearranged to adapt to external force, so as to which holding structure is stable.
In addition, when the electronics in graphene moves in track, will not be scattered because of lattice defect or introducing foreign atom.Due to
Interatomic force is very strong, at normal temperatures, even if surrounding carbon atom telescopes, the interference that graphene internal electron is subject to
It is very small.The special geometric and electronic structure of graphene assign its many excellent characteristic, including excellent electric property, optics
Performance, mechanical property, thermal property and high carrier mobility.Each carbon atom on graphene is that strong п-п bonds are closed
, and contribute a remaining P orbital electron to form the big п keys of conjugation, the welcome freely activity of п electronics of delocalization, assign stone
The excellent electric conductivity of black alkene.The movement velocity of electronics has reached the 1/300 of the light velocity in graphene, considerably beyond electronics general
Movement velocity in conductor.Graphene is most thin and most hard nano material in the world, its fracture strength 125GPa, i.e. area
For 1m2Graphene sheet layer can bear 4Kg power, its intensity is higher than the ultimate strength of ordinary steel 100 times.The springform of graphene
Amount is about 1.1TPa, has higher pliability, easy pleat easy to break.Due to the unique electronic structure of graphene, it is almost complete
Transparent, absorption 2.3% of the single-layer graphene to visible ray, i.e. transmitance are 97.7%.Graphene has the heat of quite stable
Learn property.The thermal conductivity of graphene is by being controlled under diffusion conduction and low temperature by trajectory conduction under high temperature by phonon transmission.
At room temperature, the thermal conductivity factor of single-layer graphene is up to 5300W/ (mK), higher than CNT and diamond.The theory of graphene
Specific surface area is up to 2630m2/ g, the sensor prepared with graphene can sense single atom or molecule.Surpassed according to graphene
Thin, the characteristic of intensity super large, graphene can be widely used in each field, such as ultralight flak jackets, ultra-thin and ultra-light type aircraft material
Material etc..According to its excellent electric conductivity, make it that also there is huge application potential in microelectronic.Graphene is possible to can be into
For the substitute of silicon, ultra micro transistor npn npn is manufactured, for producing the supercomputer in future, the higher electron mobility of carbon
The computer in future can be made to obtain higher speed.Other grapheme material or a kind of excellent modifying agent, led in new energy
In terms of domain such as ultracapacitor, lithium ion battery, due to its high conductance, high-specific surface area, it is applicable to as electrode material
Auxiliary agent.
On the other hand, aeroge is the highly porous nano material for having extremely-low density and high-specific surface area.Its system
The standby special technique of generally use, such as freeze-drying or supercritical drying, by the liquid displacement in wet gel into gas without
Change the original network structure of gel and obtain.Graphene aerogel is born in 2009 earliest, by the Mark in the U.S.
W.Ellsworth et al. is obtained by the way that the aqueous solution of graphene oxide is freeze-dried.Graphene aerogel have high porosity,
High-specific surface area, low-density and it is highly conductive the features such as be widely used in energy stores and conversion, gas phase catalysis, environment are clear
The fields such as clean, sensing.At present, preparing the method for graphene aerogel mainly has the methods of hydro-thermal, electronation, chemical crosslinking.
It is difficult to avoid that during preparing graphene aerogel using these methods and uses HTHP, poisonous and hazardous chemicals
It is high Deng, complex operation, cost, do not meet the theory of energy-conserving and environment-protective, secondly, the graphene aerogel obtained typically exhibit compared with
The mechanical property of difference, is unfavorable for the application of graphene aerogel in practice, finally, graphene is in an assembling process due to lamella
Between stronger Π-Π interactions, cause serious stacking phenomenon between graphene sheet layer, this is again serious to inhibit graphite
The advantage of alkene high-specific surface area itself.
In view of the difficulties and problems run into conventional graphite alkene aeroge preparation process, there is an urgent need to the skill of this ambit
Art personnel propose a kind of low energy consumption, environmental protection and can give full play to a kind of method of graphene sheet layer advantage itself to prepare graphite
Alkene aeroge to, graphene aerogel is gradually pushed to greenization, industrialization.
The content of the invention
It is a primary object of the present invention to provide a kind of graphene-polypyrrole composite aerogel and preparation method thereof, with gram
Take deficiency of the prior art.
A further object of the present invention is the purposes for providing foregoing graphites alkene-polypyrrole composite aerogel.
To realize aforementioned invention purpose, the technical solution adopted by the present invention includes：
A kind of graphene-polypyrrole composite aerogel, is mainly compounded to form by graphene and polypyrrole, and the graphite
The aperture of alkene-polypyrrole aeroge is 1nm~4 μm, porosity 75.0-99.5%, density 0.02-0.5g/cm3, compare surface
Product is 100-900m2/ g, electrical conductivity are 0.1~100S/m, storage modulus 2-25MPa.
A kind of preparation method of graphene-polypyrrole composite aerogel, comprises the following steps：
(1) graphene oxide is scattered in acid or neutral aqueous solution, formation can be stabilized the oxygen of more than 1 day
Graphite alkene dispersion liquid；
(2) graphene oxide solution is placed in room temperature environment, and adds pyrrole monomer, uniformly after mixing, ultrasound
Scattered more than 0.5min, is then stored at room temperature more than 1 day, obtains graphene-polypyrrole composite aquogel；
(3) obtained graphene-polypyrrole composite aquogel is freeze-dried or supercritical drying, obtains the stone
Black alkene-polypyrrole composite aerogel.
As one of more preferable scheme, the preparation method comprises the following specific steps that：
(1) graphene oxide is scattered in acid or neutral aqueous solution, formation can be at least stabilized 1-300 days
Graphene oxide dispersion；
(2) graphene oxide solution is placed in room temperature environment, and adds pyrrole monomer, stirring 1min~
900min, 0.5~200min of ultrasonic disperse, 1~28 day then is stood in 5~80 DEG C, obtain graphene-polypyrrole compound water congealing
Glue；
(3) obtained graphene-polypyrrole composite aquogel is freeze-dried or supercritical drying, obtains the stone
Black alkene-polypyrrole composite aerogel.
Further, the acidic aqueous solution is 10 preferably from concentration-4~1.0mol/L hydrochloric acid, phosphoric acid or sulfuric acid
Solution etc., but not limited to this.
Further, the concentration of the graphene oxide dispersion is preferably in 0.4mg/mL~15mg/mL, but is not limited to
This.
Preferably, the pyrrole monomer used in step (2) is through being evaporated under reduced pressure purified, the condition bag of vacuum distillation
Include：50~100Pa of vacuum, 60~90 DEG C of temperature.
Preferably, the graphene oxide employed in step (2) and the mass ratio of pyrroles are 40:1~1:40.
Preferably, the mixing speed used in step (2) is 10~10000 rev/min.
Preferably, the ultrasonic disperse power used in step (2) is 50~100KHz for 50~1000W, frequency.
Preferably, the condition being freeze-dried described in step (3) includes：Cryogenic temperature is -20 DEG C~-170 DEG C, dries temperature
Spend for 0 DEG C~80 DEG C, vacuum is 100~60000Pa, and drying time is 2~48 hours.
Preferably, supercritical drying includes described in step (3)：
Using small molecular alcohol or small molecule ketone to aqueous solvent present in graphene-polypyrrole composite aquogel and solvable
Property reactant, reaction product enter line replacement, obtain the compound alcogel of graphene-polypyrrole or the compound ketone of graphene-polypyrrole
Gel, the small molecular alcohol include ethanol, and the small molecule ketone includes acetone；
Using Supercritical Ethanol either supercritical carbon dioxide to the compound alcogel of the graphene-polypyrrole or graphite
The compound ketone gel of alkene-polypyrrole is dried, and obtains the graphene-polypyrrole composite aerogel.
Application of the foregoing any graphene-polypyrrole composite aerogel in electrode material or adsorbent is prepared.
A kind of electrode material for electric double layer capacitor, including foregoing any graphene-polypyrrole composite aerogel, and institute
The specific capacitance for stating electrode material is 100~500F/g, and internal resistance is 2~40 ohm.
Compared with prior art, advantages of the present invention includes：
(1) present invention, which obtains aeroge, not only has good mechanical performance, and the polypyrrole in aeroge can also be fine
Ground suppresses stack-up issue of the graphene sheet layer in self assembling process, gives full play to the special advantage of graphene sheet layer itself, its
When application is electrode material for super capacitor, high specific capacitance performance is shown, and is adsorbent in application, such as fragrance has
During machine dye sorbent, higher adsorption capacity is shown.
(2) aeroge preparation technology of the invention is simple, low energy consumption, it is green, suitable for large-scale production.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments described in invention, for those of ordinary skill in the art, on the premise of not paying creative work,
Other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 a are the electron scanning micrographs of graphene-polypyrrole composite aerogel in embodiment 2；
Fig. 1 b are the transmission electron microscope photos of graphene-polypyrrole composite aerogel in embodiment 2；
Fig. 2 a are nitrogen adsorption/desorption curve schematic diagrames of black alkene-polypyrrole composite aerogel in embodiment 2；
Fig. 2 b are the pore size distribution curve schematic diagrames of black alkene-polypyrrole composite aerogel in embodiment 2；
Fig. 3 is the X-ray diffraction curve synoptic diagram of graphene-polypyrrole composite aerogel in embodiment 2；
Fig. 4 is the nano impress curve synoptic diagram of graphene-polypyrrole composite aerogel in embodiment 2；
Fig. 5 a are the cyclic voltammetry curve schematic diagrames of graphene-polypyrrole composite aerogel electrode in embodiment 2；
Fig. 5 b are the charging and discharging curve schematic diagrames of graphene-polypyrrole composite aerogel electrode in embodiment 2.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, detailed retouch is carried out to the technical scheme in the embodiment of the present invention
State, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Based on the present invention
In embodiment, the every other implementation that those of ordinary skill in the art are obtained on the premise of creative work is not made
Example, belongs to the scope of protection of the invention.
One aspect of the present invention provides a kind of preparation method of graphene-polypyrrole composite aerogel, and it is with oxidation
Graphene and pyrrole monomer are initial reactant, and by stirring, ultrasonic disperse, it is main to be stored at room temperature gel and supercritical drying etc.
Step obtains three-dimensional grapheme-polypyrrole composite aerogel.
Another aspect of the present invention provides a kind of graphene-polypyrrole composite aerogel, its mainly by graphene with
Polypyrrole is compounded to form, and the aperture of the graphene-polypyrrole aeroge is 1nm~4um, porosity 75.0-99.5%,
Density is 0.02-0.5g/cm3, specific surface area 100-900m2/ g, electrical conductivity are 0.1~100S/m, and storage modulus is up to 2-
25MPa。
As one of exemplary embodiments, a kind of preparation method of graphene-polypyrrole composite aerogel can include with
Lower step：
(1) in acidic aqueous solution, graphene oxide is added, it is uniform until being formed to carry out mechanical agitation and ultrasonic disperse
Graphene oxide solution；The graphene oxide solution is at least stabilized 1-300 days；
(2) graphene oxide water solution is placed in room temperature environment, adds pyrrole monomer, mechanical (or magnetic force) stirs
Mix 1~900 minute, ultrasound 0.5~200 minute, be then stored at room temperature 1~28 day, obtain graphene-polypyrrole compound water congealing
Glue；
(3) by being freeze-dried to the graphene-polypyrrole hydrogel or supercritical drying, obtain graphene-
Polypyrrole composite aerogel.
Wherein, graphene oxide can be prepared by Hummers chemical methods.
The graphene-polypyrrole composite aerogel of the present invention can be used as electrode material, such as electrode of super capacitor material
The application such as material or organic-fuel adsorbent.
For example, when being applied as electrode material for electric double layer capacitor, its specific capacitance can be 100~500F/g, internal resistance
It can be 2~40 ohm.
The aerogel structure of the present invention is novel, has good mechanical, electric property etc., and preparation technology is simple, low energy consumption,
It is green, can be mass-produced, can avoid using HTHP needed in the art, hazardous chemical reducing agent etc..
Technical scheme is further described below by way of some embodiments and with reference to accompanying drawing.It is however, selected
Embodiment be merely to illustrate the present invention, without limit and the scope of the present invention.
Embodiment 1：Graphene oxide dispersion is configured to 8mg/mL solution, stirred 20 minutes, ultrasound 30 minutes, is obtained
Homogeneous graphene oxide solution must be disperseed；Solution 10mL is taken, adds 16.5 μ L pyrrole monomer thereto, stirs 30 points
Clock, then it is ultrasonic 15 minutes；By obtained well mixed graphene oxide and the dispersion liquid of pyrroles, it is stored at room temperature 7 days, obtains stone
Black alkene-polypyrrole composite aquogel.Obtained hydrogel is obtained into the compound alcohol of graphene-polypyrrole by ethanol dissolving displacement to coagulate
Glue, the compound alcogel of graphene-polypyrrole is dried by supercritical carbon dioxide afterwards, it is compound to obtain graphene-polypyrrole
Aeroge.The ratio of the aeroge initiation material graphene oxide and pyrrole monomer is 5:1, it is denoted by GP5.
The structure of obtained graphene-polypyrrole composite aerogel (GP5) and performance parameter are shown in Table in 1 in the embodiment.
Embodiment 2：Graphene oxide dispersion is configured to 8mg/mL solution, stirred 20 minutes, ultrasound 30 minutes, is obtained
Homogeneous graphene oxide solution must be disperseed；Solution 10mL is taken, adds 27.5 μ L pyrrole monomer thereto, stirs 20 points
Clock, then it is ultrasonic 20 minutes；By obtained well mixed graphene oxide and the dispersion liquid of pyrroles, it is stored at room temperature 7 days, obtains stone
Black alkene-polypyrrole composite aquogel.Obtained hydrogel is obtained into the compound alcohol of graphene-polypyrrole by ethanol dissolving displacement to coagulate
Glue, the compound alcogel of graphene-polypyrrole is dried by supercritical carbon dioxide afterwards, it is compound to obtain graphene-polypyrrole
Aeroge.The ratio of the aeroge initiation material graphene oxide and pyrrole monomer is 3:1, it is denoted by GP3.Fig. 1 a are the realities
Apply the electron scanning micrograph of obtained graphene-polypyrrole composite aerogel in example；Fig. 1 b are made in the embodiment
Graphene-polypyrrole composite aerogel transmission electron microscope photo；Fig. 2 a are obtained graphenes in the embodiment-poly-
The nitrogen adsorption of pyrroles's composite aerogel/desorption curve schematic diagram；Fig. 2 b are that obtained graphene-polypyrrole is answered in the embodiment
Close the pore size distribution curve schematic diagram of aeroge；Fig. 3 is the X of obtained graphene-polypyrrole composite aerogel in the embodiment
Ray diffraction graph schematic diagram；Fig. 4 should in embodiment obtained graphene-polypyrrole composite aerogel nano impress curve
Schematic diagram；Fig. 5 a are the cyclic voltammetry curve schematic diagrames of obtained graphene-polypyrrole composite aerogel in the embodiment；Fig. 5 b
It is the constant current charge-discharge curve synoptic diagram of obtained graphene-polypyrrole composite aerogel in the embodiment.
Other performance parameters of obtained graphene-polypyrrole composite aerogel are shown in Table in 1 in the embodiment.
Embodiment 3：Graphene oxide dispersion is configured to 8mg/mL solution, stirred 20 minutes, ultrasound 30 minutes, is obtained
Homogeneous graphene oxide solution must be disperseed；Solution 10mL is taken, adds 82.6 μ L pyrrole monomer thereto, stirs 20 points
Clock, then it is ultrasonic 20 minutes；By obtained well mixed graphene oxide and the dispersion liquid of pyrroles, it is stored at room temperature 5 days, obtains stone
Black alkene-polypyrrole composite aquogel.Obtained hydrogel is obtained into the compound alcohol of graphene-polypyrrole by ethanol dissolving displacement to coagulate
Glue, the compound alcogel of graphene-polypyrrole is dried by supercritical carbon dioxide afterwards, it is compound to obtain graphene-polypyrrole
Aeroge.The ratio of the aeroge initiation material graphene oxide and pyrrole monomer is 1:1, it is denoted by GP1.
The structure of obtained graphene-polypyrrole composite aerogel (GP1) and performance parameter are shown in Table in 1 in the embodiment.
Embodiment 4：Graphene oxide dispersion is configured to 8mg/mL solution, stirred 20 minutes, ultrasound 30 minutes, is obtained
Homogeneous graphene oxide solution must be disperseed；Solution 10mL is taken, adds 247.7uL pyrrole monomer thereto, stirs 20 points
Clock, then it is ultrasonic 20 minutes；By obtained well mixed graphene oxide and the dispersion liquid of pyrroles, it is stored at room temperature 5 days, obtains stone
Black alkene-polypyrrole composite aquogel.Obtained hydrogel is obtained into the compound alcohol of graphene-polypyrrole by ethanol dissolving displacement to coagulate
Glue, the compound alcogel of graphene-polypyrrole is dried by supercritical carbon dioxide afterwards, it is compound to obtain graphene-polypyrrole
Aeroge.The ratio of the aeroge initiation material graphene oxide and pyrrole monomer is 1:3, it is denoted by PG3.
The structure of obtained graphene-polypyrrole composite aerogel (PG3) and performance parameter are shown in Table in 1 in the embodiment.
Embodiment 5：Graphene oxide dispersion is configured to 8mg/mL solution, stirred 20 minutes, ultrasound 30 minutes, is obtained
Homogeneous graphene oxide solution must be disperseed；Solution 10mL is taken, adds 412.8 μ L pyrrole monomer thereto, stirs 20 points
Clock, then it is ultrasonic 20 minutes；By obtained well mixed graphene oxide and the dispersion liquid of pyrroles, it is stored at room temperature 5 days, obtains stone
Black alkene-polypyrrole composite aquogel.Obtained hydrogel is obtained into the compound alcohol of graphene-polypyrrole by ethanol dissolving displacement to coagulate
Glue, the compound alcogel of graphene-polypyrrole is dried by supercritical carbon dioxide afterwards, it is compound to obtain graphene-polypyrrole
Aeroge.The ratio of the aeroge initiation material graphene oxide and pyrrole monomer is 1:5, it is denoted by PG5.
The structure of obtained graphene-polypyrrole composite aerogel (PG5) and performance parameter are shown in Table in 1 in the embodiment.
Graphene-polypyrrole composite aerogel structure and performance parameters in the embodiment 1-5 of table 1.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply and deposited between these entities or operation
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Nonexcludability includes, so that process, method, article or equipment including a series of elements not only will including those
Element, but also the other element including being not expressly set out, or it is this process, method, article or equipment also to include
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Other identical element also be present in process, method, article or equipment including the key element.
Described above is only the embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (11)
1. a kind of preparation method of graphene-polypyrrole composite aerogel, it is characterised in that comprise the following steps：
(1) graphene oxide is scattered in acid or neutral aqueous solution, formation can be stabilized the oxidation stone of more than 1 day
Black alkene dispersion liquid；
(2) graphene oxide dispersion is placed in room temperature environment, and adds pyrrole monomer, uniformly after mixing, ultrasound point
More than 0.5min is dissipated, is then stored at room temperature more than 1 day, obtains graphene-polypyrrole composite aquogel；
(3) obtained graphene-polypyrrole composite aquogel is freeze-dried or supercritical drying, obtains graphene-poly-
Pyrroles's composite aerogel, the graphene-polypyrrole composite aerogel is mainly compounded to form by graphene and polypyrrole, and institute
The aperture for stating graphene-polypyrrole aeroge is 1nm~4 μm, porosity 75.0-99.5%, density 0.02-0.5g/cm3,
Specific surface area is 100-900m2/ g, electrical conductivity are 0.1~100S/m, storage modulus 2-25MPa.
2. the preparation method of graphene-polypyrrole composite aerogel as claimed in claim 1, it is characterised in that including following tool
Body step：
(1) graphene oxide is scattered in acid or neutral aqueous solution, formation can at least be stabilized the oxygen of 1-300 days
Graphite alkene dispersion liquid；
(2) graphene oxide dispersion is placed in room temperature environment, and adds pyrrole monomer, stir 1min~900min,
0.5~200min of ultrasonic disperse, then it is stored at room temperature 1~28 day, obtains graphene-polypyrrole composite aquogel；
(3) obtained graphene-polypyrrole composite aquogel is freeze-dried or supercritical drying, obtains the graphite
Alkene-polypyrrole composite aerogel.
3. the preparation method of graphene-polypyrrole composite aerogel as claimed in claim 1 or 2, it is characterised in that the acid
Property the aqueous solution include concentration be 10-4~1.0mol/L hydrochloric acid, phosphoric acid or sulfuric acid solution.
4. graphene-polypyrrole composite aerogel preparation method as claimed in claim 1 or 2, it is characterised in that the oxidation
The concentration of graphene dispersing solution is in 0.4mg/mL~15mg/mL.
5. the preparation method of graphene-polypyrrole composite aerogel as claimed in claim 1 or 2, it is characterised in that step
(2) pyrrole monomer used in is purified through being evaporated under reduced pressure, and the condition of vacuum distillation includes：50~100Pa of vacuum, temperature
60~90 DEG C of degree.
6. the preparation method of graphene-polypyrrole composite aerogel as claimed in claim 1 or 2, it is characterised in that step
(2) mass ratio of graphene oxide and pyrroles employed in is 40:1~1:40.
7. the preparation method of graphene-polypyrrole composite aerogel as claimed in claim 1 or 2, it is characterised in that step
(2) mixing speed that uses is 10~10000 rev/min in, and the ultrasonic power of ultrasonic disperse is 50~1000W, frequency 50
~100KHz.
8. the preparation method of graphene-polypyrrole composite aerogel as claimed in claim 1 or 2, it is characterised in that step
(3) condition being freeze-dried described in includes：Cryogenic temperature is -20 DEG C~-170 DEG C, and drying temperature is 0 DEG C~80 DEG C, vacuum
It is 2~48 hours to spend for 100~60000Pa, drying time.
9. the preparation method of graphene-polypyrrole composite aerogel as claimed in claim 1 or 2, it is characterised in that step
(3) supercritical drying includes described in：
It is anti-to aqueous solvent present in graphene-polypyrrole composite aquogel and solubility using small molecular alcohol or small molecule ketone
Answer thing, reaction product to enter line replacement, obtain the compound alcogel of graphene-polypyrrole or the compound ketone gel of graphene-polypyrrole,
The small molecular alcohol includes ethanol, and the small molecule ketone includes acetone；
Using Supercritical Ethanol either supercritical carbon dioxide to the compound alcogel of the graphene-polypyrrole or graphene-
The compound ketone gel of polypyrrole is dried, and obtains the graphene-polypyrrole composite aerogel.
10. graphene-polypyrrole composite aerogel prepared by the method as any one of claim 1-9 is preparing electrode material
Application in material or adsorbent.
11. a kind of electrode material for electric double layer capacitor, it is characterised in that including the method system as any one of claim 1-9
Standby graphene-polypyrrole composite aerogel, and the specific capacitance of the electrode material is 100~500F/g, internal resistance is 2~40 Europe
Nurse.
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| CN110142022A (en) * | 2019-04-17 | 2019-08-20 | 南京工业大学 | Preparation method of graphene aerogel for air purification |
| CN114624290B (en) * | 2020-12-12 | 2024-10-01 | 中国科学院大连化学物理研究所 | Preparation and application of sensing film for alkaline gas sensor |
| CN113185692B (en) * | 2021-05-12 | 2022-11-22 | 陕西科技大学 | Hydrophobic polypyrrole porous material, preparation method and application thereof |
| CN113539697A (en) * | 2021-05-28 | 2021-10-22 | 武汉工程大学 | Reduced graphene oxide/conductive polymer composite gel and preparation method thereof |
| CN113480847B (en) * | 2021-07-22 | 2023-08-01 | 广东石油化工学院 | Preparation method of composite board with strong mechanical property and energy storage property |
| CN113813889B (en) * | 2021-09-29 | 2023-03-03 | 四川大学 | Nitrogen-doped graphene aerogel microsphere as well as preparation method and application thereof |
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| CN103601913A (en) * | 2013-11-15 | 2014-02-26 | 复旦大学 | Graphene/polypyrrole hybrid aerogel and preparation method thereof |
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