CN110504106A - A kind of pi-conjugated porous carbon materials and its preparation method and application based on friedel-craft reaction - Google Patents
A kind of pi-conjugated porous carbon materials and its preparation method and application based on friedel-craft reaction Download PDFInfo
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Abstract
The invention belongs to field of new energy technologies, and in particular to can be used for a kind of pi-conjugated porous carbon materials and its preparation method and application based on friedel-craft reaction of electrode of super capacitor.Preparation method includes the following steps, using porous organic polymer as presoma, under nitrogen protection, obtains porous carbon materials after being carbonized at 800-1000 DEG C.Porous organic polymer the preparation method is as follows: under the conditions of existing for the catalyst, the mixture of the organic compound containing phenyl ring or itself and Cyanuric Chloride is dissolved in organic solvent, the back flow reaction at 60-80 DEG C；It is cooled to room temperature after reaction, successively uses acetone, methylene chloride and water wash at normal temperature, then use tetrahydrofuran respectively, and methanol and chloroform carry out soxhlet extraction；Vacuum drying, obtains porous organic polymer.The pi-conjugated porous carbon materials nitrogen content of N doping prepared by the present invention is high, and as the electrode material of supercapacitor, highest specific capacitance has a good application prospect up to 366F/g in electrochemical field.
Description
Technical field
The invention belongs to field of new energy technologies, and in particular to the one kind that can be used for electrode of super capacitor is based on friedel-craft
The pi-conjugated porous carbon materials and its preparation method and application of reaction.
Background technique
Due to the increase and growing environmental problem of energy consumption, the research of energy storage technology has become the public and discusses warmly
Topic.Researcher making great efforts explore exploitation cleaning, the efficient and green energy, such as fuel cell, lithium ion battery,
Na/S battery and supercapacitor etc..Important supplement of the supercapacitor as battery is essential electrochemical appliance, by
In at low cost and there is high power density and long circulation life and receive significant attention.Supercapacitor passes through Ions Absorption (electricity
Double layer capacity, EDLC) or accelerated surface redox reaction (fake capacitance, PC) carry out storage energy.It is produced on electrode/electrolyte surface
Raw electric double layer is the measurement of electrode capacitance, and electrode material is the key substance of this electrochemistry generating process.The nearly more than ten years
Come, scientists are directed generally to design new electrode material to enhance the specific capacitance of electrode of super capacitor, while keeping it
High power performance.Porous carbon materials are due to advantages such as its excellent electric conductivity, mechanical flexibility and controllable physical properties
First choice as electrode material for super capacitor.
Porous organic polymer (POPs) is as a kind of brand-new material, since it is with high-specific surface area, low skeletal density
With the proper properties such as excellent thermo-chemical stability, exist in gas storage, separation, catalysis, sensor and electrochemical field wide
General application.In addition, porous organic polymer has diversified synthetic route, it can select that there is the organic of specific function in advance
Structural unit is prepared by a variety of reaction paths, and then improves the performance of polymer, is provided for functional skeleton structure design
New thinking.Since the electric conductivity of porous organic polymer itself is poor, limits their reality in supercapacitor and answer
With.It, can by using the method for direct carbonization presoma in order to allow porous organic polymer to be effective as electrode material
To significantly improve their specific capacitance.Current research, which is concentrated mainly on preparation, has the carbon electrode material of high specific capacitance for surpassing
Grade capacitor.The study found that being before more having by introducing Pi-conjugated systems in porous carbon materials compared with enhancing specific surface area
The alternative solution on way.Pi-conjugated systems abundant can provide a large amount of active site, transmit convenient for ion, to enhance electrification
Learn performance.
Summary of the invention
The purpose of the present invention is to provide a kind of simple and feasible pi-conjugated porous carbon materials, are applied in super capacitor
In the electrode material of device.
The purpose of the present invention is what is be achieved through the following technical solutions: a kind of pi-conjugated porous carbon based on friedel-craft reaction
Material, preparation method include the following steps, using porous organic polymer as presoma, under nitrogen protection, 800-1000 DEG C
Lower carbonization 1-4h obtains porous carbon materials C-LNUs after cooling.
A kind of above-mentioned pi-conjugated porous carbon materials based on friedel-craft reaction, the porous organic polymer is to contain
Pi-conjugated organic monomer is to construct primitive, under the effect of the catalyst, passes through Friedel-Crafts alkylation autohemagglutination or and trimerization
The porous organic polymer LNUs that chlorine cyanogen is copolymerized.
A kind of above-mentioned pi-conjugated porous carbon materials based on friedel-craft reaction, the porous organic polymer LNUs tool
Just like flowering structure formula:
A kind of preparation method of above-mentioned pi-conjugated porous organic polymer based on friedel-craft reaction, includes the following steps:
Under the conditions of existing for the lewis acid catalyst, the mixture of the organic compound containing phenyl ring or itself and Cyanuric Chloride is dissolved in
In organic solvent, back flow reaction 36-60 hours at 60-80 DEG C；To after reaction, be cooled to room temperature, reaction is generated
Solid successively uses acetone, and methylene chloride and water wash at normal temperature, then uses tetrahydrofuran respectively, methanol and chloroform is cable-styled mentions
It takes 12-36 hours；It is dried in vacuo 8-14 hours at 80-100 DEG C last, obtains porous organic polymer LNUs.
A kind of preparation method of above-mentioned pi-conjugated porous organic polymer based on friedel-craft reaction, described contains phenyl ring
Organic compound be hexaphenyl benzene, octaphenylcyclotetrasiloxane or 2,4,6- trimethyls -2,4,6- triphenyl cyclotrisiloxane
One of.
A kind of preparation method of above-mentioned pi-conjugated porous organic polymer based on friedel-craft reaction, the Louis
Acid catalyst is aluminum trichloride (anhydrous).
A kind of preparation method of above-mentioned pi-conjugated porous organic polymer based on friedel-craft reaction, described is organic molten
Agent is anhydrous and oxygen-free methylene chloride.
A kind of preparation method of above-mentioned pi-conjugated porous organic polymer based on friedel-craft reaction contains in molar ratio
The organic compound of phenyl ring: lewis acid catalyst=1:10-15.
A kind of application of the above-mentioned pi-conjugated porous carbon materials based on friedel-craft reaction in supercapacitor, method is such as
Under, using Pt as to electrode, using Ag/AgCl electrode as reference electrode, it is total to containing the above-mentioned π-based on friedel-craft reaction
The glass-carbon electrode of yoke porous carbon materials is as working electrode, using the KOH solution of 6M as electrolyte.
The preparation method of above-mentioned application, the working electrode is as follows, the above-mentioned π-based on friedel-craft reaction of 2mg
Conjugation porous carbon materials are dispersed in the deionized water of 0.75mL, the dehydrated alcohol of 0.20mL and 0.05mL by ultrasonic treatment
Nafion (5wt%) mixed solution in, then the 8 above-mentioned dispersing liquids of μ L are transferred to the glass-carbon electrode (GC) of mirror finish
On, drying for standby.
Compared with prior art, the beneficial effects of the present invention are:
(1) present invention is total to by Friedel-Crafts alkylation using containing pi-conjugated organic monomer autohemagglutination or with Cyanuric Chloride
It is poly-, porous organic polymer presoma LNUs is obtained, journey then is carried out to porous organic polymer presoma under nitrogen protection
The high-temperature heat treatment of sequence heating obtains the pi-conjugated porous carbon materials C-LNUs with abundant cellular structure, uniform pore-size distribution,
With good electric conductivity.
(2) the method for the present invention is low for equipment requirements, and preparation method is simple, has universality, can select to have not in advance
The organic monomer of congenerous group, the functionalization porous carbon materials being prepared can be applied to the electrode material of supercapacitor
In.
(3) the pi-conjugated porous carbon materials nitrogen content of N doping prepared by the present invention is high, the electrode material as supercapacitor
Material, highest specific capacitance have a good application prospect up to 366F/g in electrochemical field.
(4) present invention has selected to be prepared for using Friedel-Crafts alkylation autohemagglutination pi-conjugated more containing pi-conjugated organic monomer
Hole carbon material C-LNU-34, C-LNU-36 and C-LNU-38.Since electrode of super capacitor and electricity can be enhanced in doping nitrogen-atoms
The surface wettability between matter is solved, and then enhances electrochemical properties, therefore we will contain pi-conjugated organic monomer and be total to Cyanuric Chloride
It is poly-, obtain pi-conjugated porous carbon materials C-LNU-35, C-LNU-37 and the C-LNU-39 of N doping.This method significantly improves more
The chemical property of hole carbon material is of great significance in supercapacitor field.
Detailed description of the invention
Fig. 1 a is the INFRARED SPECTRUM of the embodiment 1 presoma porous organic polymer LNU-34 being prepared and reaction monomers
Figure.
Fig. 1 b is the INFRARED SPECTRUM of the embodiment 2 presoma porous organic polymer LNU-35 being prepared and reaction monomers
Figure.
Fig. 1 c is the INFRARED SPECTRUM of the embodiment 3 presoma porous organic polymer LNU-36 being prepared and reaction monomers
Figure.
Fig. 1 d is the INFRARED SPECTRUM of the embodiment 4 presoma porous organic polymer LNU-37 being prepared and reaction monomers
Figure.
Fig. 1 e is the INFRARED SPECTRUM of the embodiment 5 presoma porous organic polymer LNU-38 being prepared and reaction monomers
Figure.
Fig. 1 f is the INFRARED SPECTRUM of the embodiment 6 presoma porous organic polymer LNU-39 being prepared and reaction monomers
Figure.
Fig. 2 a is the scanning electron microscope (SEM) photograph for the presoma porous organic polymer LNU-34 that embodiment 1 is prepared.
Fig. 2 b is the scanning electron microscope (SEM) photograph for the presoma porous organic polymer LNU-35 that embodiment 2 is prepared.
Fig. 2 c is the scanning electron microscope (SEM) photograph for the presoma porous organic polymer LNU-36 that embodiment 3 is prepared.
Fig. 2 d is the scanning electron microscope (SEM) photograph for the presoma porous organic polymer LNU-37 that embodiment 4 is prepared.
Fig. 2 e is the scanning electron microscope (SEM) photograph for the presoma porous organic polymer LNU-38 that embodiment 5 is prepared.
Fig. 2 f is the scanning electron microscope (SEM) photograph for the presoma porous organic polymer LNU-39 that embodiment 6 is prepared.
Fig. 3 a is the scanning electron microscope (SEM) photograph for the porous carbon materials C-LNU-34 that embodiment 1 is prepared.
Fig. 3 b is the scanning electron microscope (SEM) photograph for the porous carbon materials C-LNU-35 that embodiment 2 is prepared.
Fig. 3 c is the scanning electron microscope (SEM) photograph for the porous carbon materials C-LNU-36 that embodiment 3 is prepared.
Fig. 3 d is the scanning electron microscope (SEM) photograph for the porous carbon materials C-LNU-37 that embodiment 4 is prepared.
Fig. 3 e is the scanning electron microscope (SEM) photograph for the porous carbon materials C-LNU-38 that embodiment 5 is prepared.
Fig. 3 f is the scanning electron microscope (SEM) photograph for the porous carbon materials C-LNU-39 that embodiment 6 is prepared.
Fig. 4 is the x-ray diffractogram of powder for the porous carbon materials C-LNUs that embodiment 1-6 is prepared.
Fig. 5 is the Raman spectrogram for the porous carbon materials C-LNUs that embodiment 1-6 is prepared.
Fig. 6 a is the cyclic voltammetry curve of porous carbon materials C-LNU-34, C-LNU-35 that embodiment 1,2 is prepared.
Fig. 6 b is the cyclic voltammetry curve of porous carbon materials C-LNU-36, C-LNU-37 that embodiment 3,4 is prepared.
Fig. 6 c is the cyclic voltammetry curve of porous carbon materials C-LNU-38, C-LNU-39 that embodiment 5,6 is prepared.
Fig. 6 d is the circulation of porous carbon materials C-LNU-35, C-LNU-37, C-LNU-39 that embodiment 2,4,6 is prepared
Volt-ampere curve.
Fig. 7 a is the constant current charge-discharge curve of porous carbon materials C-LNU-34, C-LNU-35 that embodiment 1,2 is prepared.
Fig. 7 b is the constant current charge-discharge curve of porous carbon materials C-LNU-36, C-LNU-37 that embodiment 3,4 is prepared.
Fig. 7 c is the constant current charge-discharge curve of porous carbon materials C-LNU-38, C-LNU-39 that embodiment 5,6 is prepared.
Fig. 7 d is the constant current of porous carbon materials C-LNU-35, C-LNU-37, C-LNU-39 that embodiment 2,4,6 is prepared
Charging and discharging curve.
Fig. 8 a is that the specific capacitance of porous carbon materials C-LNU-34, C-LNU-35 that embodiment 1,2 is prepared are close with electric current
The variation relation figure of degree.
Fig. 8 b is that the specific capacitance of porous carbon materials C-LNU-36, C-LNU-37 that embodiment 3,4 is prepared are close with electric current
The variation relation figure of degree.
Fig. 8 c is that the specific capacitance of porous carbon materials C-LNU-38, C-LNU-39 that embodiment 5,6 is prepared are close with electric current
The variation relation figure of degree.
Fig. 8 d is the ratio electricity of porous carbon materials C-LNU-35, C-LNU-37, C-LNU-39 that embodiment 2,4,6 is prepared
Hold the variation relation figure with current density.
Fig. 9 is the cycle performance figure for the porous carbon materials C-LNU-35 that embodiment 2 is prepared.
Specific embodiment
It is the embodiment of the present invention below, helps to understand the present invention, but in the scope of protection of the present invention is not limited thereto
Hold.
The preparation of 1 porous carbon materials C-LNU-34 of embodiment
(1) synthetic route is as follows:
(2) the preparation method is as follows:
1. the synthesis of porous organic polymer LNU-34
Under a nitrogen atmosphere, by the alchlor of the hexaphenyl benzene of 300mg (0.561mmoL) and 973mg (7.294mmoL)
It is added in round-bottomed flask, then leads to nitrogen iterative cycles three times again with oil pump pumping, then is by the method for injection that 30mL is anhydrous
The methylene chloride of anaerobic is added in reaction system.Finally, reaction system is heated to 70 DEG C, back flow reaction 48 hours.
2. the post-processing of porous organic polymer LNU-34
To after reaction, filter to reactant, solid insoluble is left, and acetone, dichloromethane are used it respectively
Alkane and water are repeatedly washed, for removing unreacted monomer or residual catalyst that may be present.Crude product uses tetrahydro respectively
Furans, methanol and chloroform carry out Soxhlet extraction 24 hours, it is further purified.Finally in a vacuum drying oven 90 DEG C it is dry
The dry khaki powder 10 hours, obtained is presoma porous organic polymer LNU-34 of the present invention.
3. the preparation of porous carbon materials C-LNU-34
Presoma porous organic polymer LNU-34 is placed in quartz boat, is then lain in a horizontal plane in tube furnace, in nitrogen
Under gas shielded, 900 DEG C are heated to 5 DEG C of heating rates per minute and is kept for 2 hours, is cooled to room temperature, obtained sample is
Porous carbon materials C-LNU-34 of the present invention.
The preparation of 2 porous carbon materials C-LNU-35 of embodiment
(1) synthetic route is as follows:
(2) the preparation method is as follows:
1. the synthesis of porous organic polymer LNU-35
Under a nitrogen atmosphere, by the hexaphenyl benzene of 300mg (0.561mmoL), the Cyanuric Chloride of 207mg (1.122mmoL)
It is added in round-bottomed flask with the alchlor of 973mg (7.294mmoL), then leads to nitrogen iterative cycles three again with oil pump pumping
It is secondary, then the methylene chloride of 30mL anhydrous and oxygen-free is added in reaction system by the method for injection.Finally, reaction system is added
Heat is to 70 DEG C, back flow reaction 48 hours.
2. the post-processing of porous organic polymer LNU-35
To after reaction, filter to reactant, solid insoluble is left, and acetone, dichloromethane are used it respectively
Alkane and water are repeatedly washed, for removing unreacted monomer or residual catalyst that may be present.Crude product uses tetrahydro respectively
Furans, methanol and chloroform carry out Soxhlet extraction 24 hours, it is further purified.Finally in a vacuum drying oven 90 DEG C it is dry
The dry khaki powder 10 hours, obtained is presoma porous organic polymer LNU-35 of the present invention.
3. the preparation of porous carbon materials C-LNU-35
Presoma porous organic polymer LNU-35 is placed in quartz boat, is then lain in a horizontal plane in tube furnace, in nitrogen
Under gas shielded, 900 DEG C are heated to 5 DEG C of heating rates per minute and is kept for 2 hours, is cooled to room temperature, obtained sample is
Porous carbon materials C-LNU-35 of the present invention.
The preparation of 3 porous carbon materials C-LNU-36 of embodiment
(1) synthetic route is as follows:
(2) the preparation method is as follows:
1. the synthesis of porous organic polymer LNU-36
Under a nitrogen atmosphere, by the octaphenylcyclotetrasiloxane of 300mg (0.378mmoL) and 656mg (4.917mmoL)
Alchlor is added in round-bottomed flask, then leads to nitrogen iterative cycles three times again with oil pump pumping, then will by the method for injection
The methylene chloride of 30mL anhydrous and oxygen-free is added in reaction system.Finally, reaction system is heated to 70 DEG C, back flow reaction 48 is small
When.
2. the post-processing of porous organic polymer LNU-36
To after reaction, filter to reactant, solid insoluble is left, and acetone, dichloromethane are used it respectively
Alkane and water are repeatedly washed, for removing unreacted monomer or residual catalyst that may be present.Crude product uses tetrahydro respectively
Furans, methanol and chloroform carry out Soxhlet extraction 24 hours, it is further purified.Finally in a vacuum drying oven 90 DEG C it is dry
The dry brown powder 10 hours, obtained is presoma porous organic polymer LNU-36 of the present invention.
4. the preparation of porous carbon materials C-LNU-36
Presoma porous organic polymer LNU-36 is placed in quartz boat, is then lain in a horizontal plane in tube furnace, in nitrogen
Under gas shielded, 900 DEG C are heated to 5 DEG C of heating rates per minute and is kept for 2 hours, is cooled to room temperature, obtained sample is
Porous carbon materials C-LNU-36 of the present invention.
The preparation of 4 porous carbon materials C-LNU-37 of embodiment
(1) synthetic route is as follows:
(2) the preparation method is as follows:
1. the synthesis of porous organic polymer LNU-37
Under a nitrogen atmosphere, by the octaphenylcyclotetrasiloxane of 300mg (0.378mmoL), 186mg (1.009mmoL)
The alchlor of Cyanuric Chloride and 656mg (4.917mmoL) are added in round-bottomed flask, then lead to nitrogen repeatedly again with oil pump pumping
The methylene chloride of 30mL anhydrous and oxygen-free three times, then by the method for injection is added in reaction system by circulation.Finally, will reaction
System is heated to 70 DEG C, back flow reaction 48 hours.
2. the post-processing of porous organic polymer LNU-37
To after reaction, filter to reactant, solid insoluble is left, and acetone, dichloromethane are used it respectively
Alkane and water are repeatedly washed, for removing unreacted monomer or residual catalyst that may be present.Crude product uses tetrahydro respectively
Furans, methanol and chloroform carry out Soxhlet extraction 24 hours, it is further purified.Finally in a vacuum drying oven 90 DEG C it is dry
The dry brown powder 10 hours, obtained is presoma porous organic polymer LNU-37 of the present invention.
3. the preparation of porous carbon materials C-LNU-37
Presoma porous organic polymer LNU-37 is placed in quartz boat, is then lain in a horizontal plane in tube furnace, in nitrogen
Under gas shielded, 900 DEG C are heated to 5 DEG C of heating rates per minute and is kept for 2 hours, is cooled to room temperature, obtained sample is
Porous carbon materials C-LNU-37 of the present invention.
The preparation of 5 porous carbon materials C-LNU-38 of embodiment
(1) synthetic route is as follows:
(2) the preparation method is as follows:
1. the synthesis of porous organic polymer LNU-38
Under a nitrogen atmosphere, by 2,4,6- trimethyls -2,4 of 300mg (0.734mmoL), 6- triphenyl cyclotrisiloxane
It is added in round-bottomed flask with the alchlor of 1272mg (9.542mmoL), then leads to nitrogen iterative cycles three again with oil pump pumping
It is secondary, then the methylene chloride of 30mL anhydrous and oxygen-free is added in reaction system by the method for injection.Finally, reaction system is added
Heat is to 70 DEG C, back flow reaction 48 hours.
2. the post-processing of porous organic polymer LNU-38
To after reaction, filter to reactant, solid insoluble is left, and acetone, dichloromethane are used it respectively
Alkane and water are repeatedly washed, for removing unreacted monomer or residual catalyst that may be present.Crude product uses tetrahydro respectively
Furans, methanol and chloroform carry out Soxhlet extraction 24 hours, it is further purified.Finally in a vacuum drying oven 90 DEG C it is dry
The dry brown powder 10 hours, obtained is presoma porous organic polymer LNU-38 of the present invention.
3. the preparation of porous carbon materials C-LNU-38
Presoma porous organic polymer LNU-38 is placed in quartz boat, is then lain in a horizontal plane in tube furnace, in nitrogen
Under gas shielded, 900 DEG C are heated to 5 DEG C of heating rates per minute and is kept for 2 hours, is cooled to room temperature, obtained sample is
Porous carbon materials C-LNU-38 of the present invention.
The preparation of 6 porous carbon materials C-LNU-39 of embodiment
(1) synthetic route is as follows:
(2) the preparation method is as follows:
1. the synthesis of porous organic polymer LNU-39
Under a nitrogen atmosphere, by 2,4,6- trimethyls -2,4 of 300mg (0.734mmoL), 6- triphenyl cyclotrisiloxane,
The Cyanuric Chloride of 135mg (0.734mmoL) and the alchlor of 1272mg (9.542mmoL) are added in round-bottomed flask, then use
Oil pump pumping leads to nitrogen iterative cycles three times again, then the methylene chloride of 30mL anhydrous and oxygen-free is added to instead by the method by injecting
It answers in system.Finally, reaction system is heated to 70 DEG C, back flow reaction 48 hours.
2. the post-processing of porous organic polymer LNU-39
To after reaction, filter to reactant, solid insoluble is left, and acetone, dichloromethane are used it respectively
Alkane and water are repeatedly washed, for removing unreacted monomer or residual catalyst that may be present.Crude product uses tetrahydro respectively
Furans, methanol and chloroform carry out Soxhlet extraction 24 hours, it is further purified.Finally in a vacuum drying oven 90 DEG C it is dry
The dry brown powder 10 hours, obtained is presoma porous organic polymer LNU-39 of the present invention.
3. the preparation of porous carbon materials C-LNU-39
Presoma porous organic polymer LNU-39 is placed in quartz boat, is then lain in a horizontal plane in tube furnace, in nitrogen
Under gas shielded, 900 DEG C are heated to 5 DEG C of heating rates per minute and is kept for 2 hours, is cooled to room temperature, obtained sample is
Porous carbon materials C-LNU-39 of the present invention.
The detection of 7 porous carbon materials C-LNUs of embodiment
Fig. 1 a- Fig. 1 f is presoma the porous organic polymer LNU-34, LNU- that 1-6 of the embodiment of the present invention is prepared
The infrared spectrum comparison diagram of 35, LNU-36, LNU-37, LNU-38 and LNU-39 and its corresponding monomer.It can be seen in FIG. 1 that
680~860cm in organic monomer-1The C-H bending vibration at place disappears in the polymer；It can from Fig. 1 b, Fig. 1 d and Fig. 1 f
Out, monomer Cyanuric Chloride is in 851cm-1The characteristic absorption peak of the C-Cl key at place disappears in the polymer, illustrates product according to anticipation
Have occurred and polymerize, and extent of polymerization is complete.In the spectrogram of Fig. 1 c~Fig. 1 f, it can be observed that 1100cm-1The Si-O-Si at place
The asymmetric of key stretches, and shows that the Si-O-Si key in monomer still saves in the polymer, is not destroyed.
Fig. 2 a- Fig. 2 f is presoma the porous organic polymer LNU-34, LNU- that 1-6 of the embodiment of the present invention is prepared
The scanning electron microscope (SEM) photograph of 35, LNU-36, LNU-37, LNU-38 and LNU-39, we can observe that polymer is by irregular
Blocky-shaped particle is accumulated.
Fig. 3 a- Fig. 3 f is the porous carbon materials C-LNU-34, C-LNU-35, C-LNU-36, C- that embodiment 1-6 is prepared
The scanning electron microscope (SEM) photograph of LNU-37, C-LNU-38 and C-LNU-39, comparison diagram 2, it can be observed that there is no pattern after before carbonization
It is apparent to change, still show as random pattern.
Fig. 4 is the porous carbon materials C-LNU-34, C-LNU-35, C-LNU-36, C-LNU- that embodiment 1-6 is prepared
The x-ray diffractogram of powder of 37, C-LNU-38 and C-LNU-39.It can be observed that spreading out at 23 ° and 43 ° of 2 θ ≈ there are two wide
Peak is penetrated, (002) and (100) crystal face is corresponded respectively to, does not observe spike in spectrogram, show to obtain after high temperature cabonization more
Hole carbon material is amorphous structure.
Fig. 5 is the porous carbon materials C-LNU-34, C-LNU-35, C-LNU-36, C-LNU- that embodiment 1-6 is prepared
The Raman spectrogram of 37, C-LNU-38 and C-LNU-39.It may be seen that two apparent characteristic peaks, respectively 1350cm-1
The peak D and 1580cm at place-1The peak G at place.The peak D can embody lattice defect degree, the breathing vibration corresponding to hexatomic ring；The peak G can be with
Embody lattice degree of perfection, the stretching vibration corresponding to the carbon-carbon double bond in hexatomic ring.Usually using the intensity rate at the peak D and the peak G
ID/IGTo characterize the randomness of carbon material.C-LNU-34, C-LNU-35, C-LNU-36, C-LNU-37, C-LNU-38 and C-LNU-
39 ID/IGRespectively 0.91,1.03,0.97,1.02,0.92,0.99, it is higher mixed to show that the series multiwell carbon material has
Random degree, wherein the randomness highest of C-LNU-35, i.e. its degree of graphitization highest.
Fig. 6 a- Fig. 6 d is the porous carbon materials C-LNU-34, C-LNU-35, C-LNU-36, C- that embodiment 1-6 is prepared
The cyclic voltammetry curve of LNU-37, C-LNU-38 and C-LNU-39, rectangular shape subject to presentation, illustrate the electrochemistry of the material
Invertibity is good, shows ideal double layer capacitor (EDLC) feature.From Fig. 6 a~Fig. 6 c it is observed that C-LNU-35 product
Subregion is significantly greater than C-LNU-34, and equally, C-LNU-37 and C-LNU-39 integral domain is significantly greater than C-LNU-36 and C-
LNU-38 shows that the specific capacitance of the pi-conjugated porous carbon materials of N doping is higher than unazotized porous carbon materials.Fig. 6 d is clear
The specific capacitance value highest for showing C-LNU-35.
Fig. 7 a- Fig. 7 d is the porous carbon materials C-LNU-34, C-LNU-35, C-LNU-36, C- that embodiment 1-6 is prepared
The constant current charge-discharge curve of LNU-37, C-LNU-38 and C-LNU-39, it is triangular shaped subject to presentation, it is certain to show that it has
Electrochemical behavior.Meanwhile it is observed that the discharge time of the pi-conjugated porous carbon materials of N doping it is more porous than unazotized
Carbon material will be grown.Wherein, the discharge time longest of C-LNU-35 further demonstrates its specific capacitance highest.
Fig. 8 a- Fig. 8 d is the porous carbon materials C-LNU-34, C-LNU-35, C-LNU-36, C- that embodiment 1-6 is prepared
The specific capacitance of LNU-37, C-LNU-38 and C-LNU-39 with current density variation relation figure.It can be seen that the ratio of C-LNU-35
Capacitance is consistently higher than other materials.Since C-LNU-35 has a rich N structure, the doping of nitrogen-atoms for material conductivity,
Surface wettability and the total charge dosage of storage have synergistic effect；Meanwhile material itself has richer pi-conjugated structure,
It can provide a large amount of active site, transmitted convenient for ion.Under the current density of 0.5A/g, highest specific capacitance be can reach
366F/g is higher than most of carbon materials, such as N-MCS-200 (292F/g), SDBPy-800 (301F/g), PTPB-Z-900
(189F/g) etc..In addition, when current density increases to 10A/g, specific capacitance conservation rate up to 70%, show good times it is forthright
Energy.
Fig. 9 is cycle performance figure of the porous carbon materials C-LNU-35 that is prepared of embodiment 2 at 10A/g, Ke Yiguan
It observes, after the circle of circulation 10000, capacity retention 88% shows that the material has excellent cyclical stability, it is shown that
It, as the advantage of electrode material, has very high application value in supercapacitor.
Claims (10)
1. a kind of pi-conjugated porous carbon materials based on friedel-craft reaction, which is characterized in that preparation method includes the following steps, with
Porous organic polymer is as presoma, and under nitrogen protection, be carbonized 1-4h at 800-1000 DEG C, obtains porous carbon after cooling
Material C-LNUs.
2. a kind of pi-conjugated porous carbon materials based on friedel-craft reaction according to claim 1, which is characterized in that described
Porous organic polymer be with containing pi-conjugated organic monomer be construct primitive, under the effect of the catalyst, pass through friedel-craft alkane
Glycosylation reaction autohemagglutination or the porous organic polymer LNUs being copolymerized with Cyanuric Chloride.
3. a kind of pi-conjugated porous carbon materials based on friedel-craft reaction according to claim 2, which is characterized in that described
Porous organic polymer LNUs have the following structure formula:
4. a kind of preparation method of pi-conjugated porous organic polymer based on friedel-craft reaction according to claim 3,
Be characterized in that, under the conditions of including the following steps: existing for the lewis acid catalyst, by containing the organic compound of phenyl ring or its
It is dissolved in organic solvent with the mixture of Cyanuric Chloride, back flow reaction 36-60 hours at 60-80 DEG C；It is cold to after reaction
But to room temperature, the solid that reaction generates successively is used into acetone, methylene chloride and water wash at normal temperature, then use tetrahydro furan respectively
It mutters, methanol and chloroform soxhlet extraction 12-36 hours；It is finally dried in vacuo 8-14 hours, obtains porous at 80-100 DEG C
Organic polymer LNUs.
5. a kind of preparation method of pi-conjugated porous organic polymer based on friedel-craft reaction according to claim 4,
It being characterized in that, the organic compound containing phenyl ring is hexaphenyl benzene, octaphenylcyclotetrasiloxane or 2,4,6- trimethyl -2,
One of 4,6- triphenyl cyclotrisiloxane.
6. a kind of preparation method of pi-conjugated porous organic polymer based on friedel-craft reaction according to claim 4,
It is characterized in that, the lewis acid catalyst is aluminum trichloride (anhydrous).
7. a kind of preparation method of pi-conjugated porous organic polymer based on friedel-craft reaction according to claim 4,
It is characterized in that, the organic solvent is anhydrous and oxygen-free methylene chloride.
8. a kind of preparation method of pi-conjugated porous organic polymer based on friedel-craft reaction according to claim 4,
It is characterized in that, in molar ratio, the organic compound containing phenyl ring: lewis acid catalyst=1:10-15.
9. a kind of application of the pi-conjugated porous carbon materials based on friedel-craft reaction described in claim 1 in supercapacitor,
It is characterized in that, method is as follows, using Pt as to electrode, using Ag/AgCl electrode as reference electrode, to contain claim
The glass-carbon electrode of pi-conjugated porous carbon materials based on friedel-craft reaction described in 1 is made as working electrode with the KOH solution of 6M
For electrolyte.
10. application according to claim 9, which is characterized in that the preparation method of the working electrode is as follows, takes 2mg
It is described in claim 1 based on friedel-craft reaction pi-conjugated porous carbon materials by ultrasonic treatment be dispersed in 0.75mL
Deionized water, 0.20mL dehydrated alcohol and 0.05mL Nafion (5wt%) mixed solution in, it is then that 8 μ L are above-mentioned
Dispersing liquid is transferred on the glass-carbon electrode (GC) of mirror finish, drying for standby.
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