CN107244672A - A kind of method for preparation of active carbon using rape pollen as raw material - Google Patents
A kind of method for preparation of active carbon using rape pollen as raw material Download PDFInfo
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- CN107244672A CN107244672A CN201710438953.XA CN201710438953A CN107244672A CN 107244672 A CN107244672 A CN 107244672A CN 201710438953 A CN201710438953 A CN 201710438953A CN 107244672 A CN107244672 A CN 107244672A
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 61
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000002994 raw material Substances 0.000 title claims abstract description 19
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 29
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000003575 carbonaceous material Substances 0.000 claims abstract description 11
- 238000003763 carbonization Methods 0.000 claims abstract description 11
- 230000004913 activation Effects 0.000 claims abstract description 7
- 229910052786 argon Inorganic materials 0.000 claims abstract description 7
- 239000007789 gas Substances 0.000 claims abstract description 7
- 238000009656 pre-carbonization Methods 0.000 claims description 12
- 238000010792 warming Methods 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 7
- 239000003513 alkali Substances 0.000 claims description 6
- 239000000428 dust Substances 0.000 claims description 6
- 239000012804 pollen sample Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 238000005485 electric heating Methods 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- -1 after washing Substances 0.000 claims description 2
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 238000005255 carburizing Methods 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 238000005554 pickling Methods 0.000 claims description 2
- 239000011148 porous material Substances 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 4
- 239000002028 Biomass Substances 0.000 abstract description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract 2
- 229910052757 nitrogen Inorganic materials 0.000 abstract 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Substances [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 13
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- 239000000203 mixture Substances 0.000 description 12
- 239000003610 charcoal Substances 0.000 description 10
- 239000000243 solution Substances 0.000 description 8
- 239000002250 absorbent Substances 0.000 description 7
- 230000002745 absorbent Effects 0.000 description 7
- 238000009826 distribution Methods 0.000 description 7
- 239000007772 electrode material Substances 0.000 description 6
- 239000003792 electrolyte Substances 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 229910021389 graphene Inorganic materials 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 230000003213 activating effect Effects 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 235000019441 ethanol Nutrition 0.000 description 2
- 241000446313 Lamella Species 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 125000005909 ethyl alcohol group Chemical group 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000005445 natural material Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000005418 vegetable material Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/30—Electrodes characterised by their material
- H01G11/32—Carbon-based
- H01G11/34—Carbon-based characterised by carbonisation or activation of carbon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/30—Electrodes characterised by their material
- H01G11/32—Carbon-based
- H01G11/44—Raw materials therefor, e.g. resins or coal
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/03—Particle morphology depicted by an image obtained by SEM
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/04—Particle morphology depicted by an image obtained by TEM, STEM, STM or AFM
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/12—Surface area
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/16—Pore diameter
- C01P2006/17—Pore diameter distribution
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/40—Electric properties
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Carbon And Carbon Compounds (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
The invention provides a kind of method for preparation of active carbon using rape pollen as raw material.Detailed process, which is related to, uses carbon containing biomass for carbon source, by two step carbonization, using KOH as activation pore creating material, in the atmosphere such as argon gas, nitrogen, in 700 850 degree of temperature ranges, prepares the porous carbon materials of the high-specific surface area used in electrochemical capacitance.The advantage of the invention is that the rape pollen employed in the technology of preparing belongs to green non-pollution, and yield is huge and microcosmic skeleton that possess is particularly conducive to prepare the basis of electrochemical capacitance porous carbon.
Description
Technical field
The present invention relates to electrochemical capacitance electrode material field, and in particular to prepared by a kind of activated carbon using rape pollen as raw material
Method, belongs to technical field of new material preparation.
Background technology
Ultracapacitor mainly stores energy by being reacted in electrode material surface or near surface：According to super
The energy storage mechnism of capacitor divides, and ultracapacitor is broadly divided into two kinds of capacitors of electric double layer capacitance and redox fake capacitance.
Relative to lithium rechargeable battery etc. have that energy storage is big, resistance is small due to ultracapacitor, long lifespan, safe and reliable, charging it is fast
The good characteristic of speed, therefore ultracapacitor possesses huge application prospect in new energy field.Porous carbon materials, such as activity
Charcoal, CNT, graphene, template carbon material etc., the big specific surface area due to possessing, abundant pore structure, small electric solution matter
Ion is easy to penetrate into inside the aperture of porous material, so as to produce larger electric capacity, at the same possess good electric conductivity and
Superior cyclical stability and the electrode material for being widely elected to be ultracapacitor, wherein the work obtained based on biomass
Property Carbon Materials are for the materials such as artificial synthesized CNT, graphene, and with preparing, with low cost, preparation technology is simple
Singly, many advantages, such as material source is extensive.For ultracapacitor carbon material synthesis material essentially from crude oil fuel, plant
Thing, artificial synthesized high polymer material etc..Properties of Activated Carbon difference prepared by different material is larger, therefore selection is a kind of environment-friendly
Natural material prepare the stable absorbent charcoal material of capacitive property and have become a kind of trend.Wherein vegetable material is due to annual production
Greatly, pollution-free, cheap, the advantages of source category is extensive, carbon content is high has obtained extensive attention.Based on rape in the whole world
Extensive plantation, and rape flower has growth cycle short, and yield is huge, and cost is low, many advantages, such as environmental friendliness is high, I
Select to prepare the excellent absorbent charcoal material of capacitive property by raw material of rape pollen.
The content of the invention
The present invention provides a kind of low cost, environment-friendly, and the excellent ultracapacitor of capacitive property clicks on the system of material
Preparation Method, this method, by pre- carbonization, is carbonized by raw material of rape pollen, or the mode of secondary carbonization prepares electricity after alkaline activation
Hold the absorbent charcoal material of excellent performance.
To achieve the above object, present invention employs following technology of preparing path：
A kind of method for preparation of active carbon using rape pollen as raw material, the specific preparation method of invention prepares step using following
Suddenly：
Step 1: carbonization：
First stage：It will be placed in by washing, the rape pollen dried under air atmosphere, with 0.5~10 DEG C/min liter
Warm speed is warming up to 180~350 DEG C, 3~8h of constant temperature；
Second stage：The product of first stage is placed under argon gas atmosphere, heated up with 0.5~10 DEG C/min programming rate
To 700~1000 DEG C, 1~3h of constant temperature；
Raw material rape pollen obtains the pollen samples of pre- carbonization by two carbonizatin methods；
Step 2: alkali is activated：
By the pollen samples of the pre- carbonization obtained in step one and the KOH aqueous solution according to volume ratio 1：2~4 mixing, stirring,
And heating carbonization is carried out in constant temperature electric heating set, pickling is carried out after carbonization to material, after washing, ethanol are washed 3-5 times, in 80-
8~24h is dried under 100 DEG C of vacuum conditions, the carbon dust product of alkali activation is made, carbon dust product is available for electrochemical capacitance electrode
Absorbent charcoal material.
In the above-mentioned technical solutions, described rape pollen particle diameter is between 10~20u, and moisture is less than 5%.
In the above-mentioned technical solutions, in step one, the warming temperature described in the first stage is preferably 230-300 DEG C.
In the above-mentioned technical solutions, in step one, the constant temperature time described in the first stage is preferably 5-6h.
In the above-mentioned technical solutions, in step one, the warming temperature described in second stage is preferably 800-900 DEG C.
In the above-mentioned technical solutions, in step one, the constant temperature time described in second stage is preferably 1-2h.
In the above-mentioned technical solutions, in step 2, the heating carburizing temperature in described constant temperature electric heating set is 200-
500℃。
Advantages of the present invention is as follows：
1st, with environment-friendly, inexpensively, reproducible rape pollen is that raw material is prepared for excellent electrochemical capacitance carbon material, is compared
For the carbon materials such as existing frequently-used but expensive graphene, CNT, such a absorbent charcoal material has obvious
Advantage with low cost；
2nd, using pre- carbonization and secondary carbonization, and alkali activating process, the biological skeleton structure of pollen material can be kept
While fully eliminate impurity in material, obtain relatively pure absorbent charcoal material.
Brief description of the drawings
Fig. 1：The XRD spectrum of the absorbent charcoal material prepared using invention technology, 1 is BPDC-1, and 2 be BPDC-2,3
It is BPDC-raw for BPDC-3,4.
Fig. 2：The SEM spectrum of activated carbon prepared by embodiment 1,2,3,4.
Fig. 3：The TEM collection of illustrative plates of activated carbon prepared by embodiment 4.
Fig. 4：The graph of pore diameter distribution a of activated carbon prepared by embodiment 1,2,3,4.
Fig. 5：The graph of pore diameter distribution b of activated carbon prepared by embodiment 1,2,3,4.
Fig. 6：The graph of pore diameter distribution c of activated carbon prepared by embodiment 1,2,3,4.
Fig. 7：The specific capacity correlation curve of activated carbon prepared by embodiment 1,2,3,4 three kind of method.
Fig. 8：The EIS collection of illustrative plates a of activated carbon prepared by embodiment 1,2,3,4 three kind of method.
Fig. 9：The EIS collection of illustrative plates b of activated carbon prepared by embodiment 1,2,3,4 three kind of method.
Embodiment
In order to preferably explain the present invention, it is further described below by specific embodiment, but the guarantor of the present invention
Shield scope is not limited to that.
Embodiment 1
First, appropriate 20g rape pollen is taken, it is put into beaker, by pouring into wherein for 150ml water, stirring
30min, is filtered using separatory funnel, is then washed three times；Filtered after adding 100ml absolute ethyl alcohols, stirring 10min.It is put into
In baking oven, 80 DEG C of dried overnights, weigh, the pollen 18g after being washed.Dried pollen is put into alumina crucible,
Then 300 DEG C are warming up to 10 DEG C of programming rates per minute always in Muffle furnace, constant temperature 5h, rear Temperature fall to 25 DEG C,
Obtain the pollen samples 15g of pre- carbonization.
The pollen samples 5g after pre- carbonization is taken, is fully ground, is put into afterwards in quartz boat, is put into tube furnace, is led to
Enter argon gas and it is warming up to 700 DEG C with 10 DEG C of programming rates per minute, constant temperature 5h, rear Temperature fall obtains pollen base to 25 DEG C
Porous carbon (Bee Pollen-Derived Carbons) BPDC-Raw.Prepared BPDC-Raw material specific surface areas are
15m2/ g, in 6M NaOH electrolyte, during with 0.2A/g current density operation, the quality specific capacitance that product has is
30F/g。
Embodiment 2
The sample 5g after pre- carbonization is taken in beaker, 5g KOH are added, suitable quantity of water is added, stirring obtains activated carbon after drying
With KOH mixture, mixture is put into tube furnace, argon gas is passed through and is warming up to 700 with 10 DEG C of programming rates per minute
DEG C, constant temperature 5h, rear Temperature fall obtains activated carbon and KOH mixture to 25 DEG C, dries, obtains after mixture is washed 3 times
BPDC-1 material specific surface areas prepared by activated carbon BPDC-1. are 780m2/ g, in 6M NaOH electrolyte, with 0.2A/g
Current density operation when, the quality specific capacitance that product has be 148F/g.
Embodiment 3
The sample 5g after pre- carbonization is taken in beaker, 10g KOH are added, suitable quantity of water is added, stirring obtains activity after drying
The mixture of charcoal and KOH, mixture is put into tube furnace, is passed through argon gas and is warming up to 10 DEG C of programming rates per minute
700 DEG C, constant temperature 5h, rear Temperature fall obtains activated carbon and KOH mixture to 25 DEG C, dries, obtains after mixture is washed 3 times
To activated carbon BPDC-2, prepared BPDC-2 material specific surface areas are 920m2/ g, in 6M NaOH electrolyte, with
During 0.2A/g current density operation, the quality specific capacitance that product has is 195F/g.
Embodiment 4
The sample 5g after pre- carbonization is taken in beaker, 10g KOH are added, suitable quantity of water is added, stirring obtains activity after drying
The mixture of charcoal and KOH, mixture is put into tube furnace, is passed through argon gas and is warming up to 10 DEG C of programming rates per minute
850 DEG C, constant temperature 5h, rear Temperature fall obtains activated carbon and KOH mixture to 25 DEG C, dries, obtains after mixture is washed 3 times
It is 1365m to the BPDC-3 material specific surface areas prepared by activated carbon BPDC-3.2/ g, in 6M NaOH electrolyte, with
During 0.2A/g current density operation, the quality specific capacitance that product has is 368F/g.
Experimental result and analysis：
As shown in figure 1, four curves in figure are represented respectively obtains pollen base porous carbon (Bee in embodiment 1-4
Pollen-Derived Carbons) product, it is named as respectively：BPDC-Raw、BPDC-1、BPDC-2、BPDC-3.
It can be proved by XRD spectrum, the product obtained after different schemes are carbonized is the diffraction maximum of porous carbon entirely, its
Middle BPDC-3 products space structure after activation, carbonization has obtained very big destruction and disappeared down to its (002) diffraction maximum, this
Illustrate product after being activated by KOH, its space lamella by destroying largely, its pattern and pore-size distribution,
There is larger change BPDC-1 that reference area etc. and original material and different process activation are obtained, 2 etc..
As possessed very by pre- carbonization and secondary carbonization, and carbon dust product prepared by alkali activating process in Fig. 2, embodiment
Big specific surface area and abundant pore structure, small electric solution matter ion are easy to penetrate into inside the aperture of porous material, so that
Larger electric capacity is produced, with the architectural characteristic as electrochemical capacitance electrode material.
Shown in Fig. 3, the TEM figures of BPDC-3 materials, by containing substantial amounts of sky inside TEM graph discoveries BPDC-3, can make
Electrolyte ion quickly passes in and out material internal, material is obtained the abundant infiltration of electrolyte solution, is conducive to the counterfeit electricity of material
The performance of appearance is improved.
As Figure 4-Figure 6, by alkalization activation after, in resulting BPDC-1,2,3 specific surface area of carbon dust with
BPDC-raw, which compares, to be greatly improved, particularly BPDC-3,78m of its specific surface area compared with BPDC-raw2/ g is improved
1365m is arrived2/ g, and the pore-size distribution of synthesized material there has also been obvious change, by BPDC-raw main distribution
BPDC-raw 1nm or so has been moved to the left in 3nm or so；Specific surface area is significantly increased, and pore-size distribution is to micro-porous area
Skew etc. is conducive to the increased change of carbon material fake capacitance, it was demonstrated that the BPDC-3 materials that we synthesize are a kind of very promising super
Level capacitor electrode material.
As shown in fig. 7, having measured the specific capacitance of synthesized porous carbon materials, wherein BPDC-3 under different scanning speed
Material is swept under speed 2mV/s's, and its specific capacity is up to 368F/g, with the 48F/g without the KOH BPDC-raw activated, there is nearly 8
Raising again, with the increase for sweeping speed, BPDC-3 samples present its excellent capacitive property, speed are swept in up to 500mV/s
Under, its specific capacity is up to 175F/g, and sweeps herein under speed, and BPDC-raw is almost without capacity.
As shown in Figure 8, Figure 9, found by EIS collection of illustrative plates, the conduct of porous carbon materials BPDC-1,2,3 after KOH is activated
The internal resistance of electrode material for super capacitor is far smaller than the BPDC-raw materials not through overactivation.
The present invention is described in detail above, but the content is only presently preferred embodiments of the present invention, it is impossible to recognized
For the practical range for limiting the present invention.Any changes and modifications in accordance with the scope of the present application, all should still return
Within the patent covering scope for belonging to the present invention.
Claims (7)
1. a kind of method for preparation of active carbon using rape pollen as raw material, it is characterised in that：Carried out according to the following steps：
Step 1: carbonization：
First stage：It will be placed in by washing, the rape pollen dried under air atmosphere, with 0.5~10 DEG C/min heating speed
Degree is warming up to 180~350 DEG C, 3~8h of constant temperature；
Second stage：The product of first stage is placed under argon gas atmosphere, is warming up to 0.5~10 DEG C/min programming rate
700~1000 DEG C, 1~3h of constant temperature；Raw material rape pollen obtains the pollen samples of pre- carbonization by two carbonizatin methods；
Step 2: alkali is activated：
By the pollen samples of the pre- carbonization obtained in step one and the KOH aqueous solution according to volume ratio 1：2~4 mixing, stirring, and
Heating carbonization is carried out in constant temperature electric heating set, pickling is carried out after carbonization to material, after washing, ethanol are washed 3-5 times, at 80-100 DEG C
8~24h is dried under vacuum condition, the carbon dust product of alkali activation is made, carbon dust product is the activity available for electrochemical capacitance electrode
Carbon Materials.
2. a kind of method for preparation of active carbon using rape pollen as raw material according to claim 1, it is characterised in that：It is described
Rape pollen particle diameter between 10~20u, moisture be less than 5%.
3. a kind of method for preparation of active carbon using rape pollen as raw material according to claim 1, it is characterised in that：In step
In rapid one, the warming temperature described in the first stage is preferably 230-300 DEG C.
4. a kind of method for preparation of active carbon using rape pollen as raw material according to claim 1, it is characterised in that：In step
In rapid one, the constant temperature time described in the first stage is preferably 5-6h.
5. a kind of method for preparation of active carbon using rape pollen as raw material according to claim 1, it is characterised in that：In step
In rapid one, the warming temperature described in second stage is preferably 800-900 DEG C.
6. a kind of method for preparation of active carbon using rape pollen as raw material according to claim 1, it is characterised in that：In step
In rapid one, the constant temperature time described in second stage is preferably 1-2h.
7. a kind of method for preparation of active carbon using rape pollen as raw material according to claim 1, it is characterised in that：In step
In rapid two, the heating carburizing temperature in described constant temperature electric heating set is 200-500 DEG C.
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Cited By (10)
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| CN105810447A (en) * | 2016-04-29 | 2016-07-27 | 陕西科技大学 | Preparation method of porous spherical biological carbon and application |
| CN107970893A (en) * | 2017-11-29 | 2018-05-01 | 广西大学 | A kind of Jasmine base porous charcoal MOFs composite materials and preparation method thereof |
| CN108217624A (en) * | 2018-01-25 | 2018-06-29 | 东北林业大学 | A kind of classifying porous charcoal-aero gel and its preparation method and application |
| CN109473291A (en) * | 2018-11-09 | 2019-03-15 | 天津工业大学 | A kind of N of the superelevation specific capacitance based on cotton, the novel preparation method of P codope Porous hollow Carbon fibe |
| CN110277557A (en) * | 2018-03-17 | 2019-09-24 | 中国海洋大学 | The preparation method and storage sodium performance of the biological carbon material of multi-element doping, high-specific surface area, threadiness |
| WO2020103139A1 (en) * | 2018-11-23 | 2020-05-28 | 辽宁星空钠电电池有限公司 | Sodium ion battery negative electrode material rich in defects, preparation method therefor and application thereof |
| CN113336210A (en) * | 2021-05-07 | 2021-09-03 | 桂林理工大学 | Preparation method of high-conductivity iron phosphate with carbon network coating and embedding structure |
| CN114317626A (en) * | 2020-09-30 | 2022-04-12 | 北京化工大学 | Method for producing epoxy fatty acid ester by light-enzyme coupling cascade |
| CN114477170A (en) * | 2022-01-12 | 2022-05-13 | 大连海事大学 | Method for improving intrinsic performance and recycling of biomass derived carbon material |
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| CN115501856A (en) * | 2022-09-20 | 2022-12-23 | 燕山大学 | Specific fluorine-absorbing agent and preparation method and application method thereof |
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