CN106892417A - A kind of preparation method and application of konjaku flour base porous carbon material - Google Patents
A kind of preparation method and application of konjaku flour base porous carbon material Download PDFInfo
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- CN106892417A CN106892417A CN201710211563.9A CN201710211563A CN106892417A CN 106892417 A CN106892417 A CN 106892417A CN 201710211563 A CN201710211563 A CN 201710211563A CN 106892417 A CN106892417 A CN 106892417A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/84—Processes for the manufacture of hybrid or EDL capacitors, or components thereof
- H01G11/86—Processes for the manufacture of hybrid or EDL capacitors, or components thereof specially adapted for electrodes
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- 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
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/13—Energy storage using capacitors
Abstract
The present invention provides a kind of preparation method and application of konjaku flour base porous carbon material, belongs to the preparing technical field of porous carbon material.The preparation method of konjaku flour base porous carbon material of the invention is to obtain pre- carbonizing production after first konjaku powder raw material is pyrolyzed at ambient pressure；Pre- carbonizing production is taken again to be mixed with activator, deionized water is added and is stirred, then dried to constant weight, obtain activating precursor mixture；Room temperature will be down to after the anoxybiotic charing of activation precursor mixture high temperature again, be dried to constant weight after salt acid elution, obtain konjaku flour base porous carbon material.Prepared konjaku flour base porous carbon material can be used for electrode material for super capacitor.Preparation method is simple of the present invention is easy, with low cost, excellent performance, is adapted to large-scale commodity production.The method provides new way for the preparation of porous carbon material.
Description
Technical field
The invention belongs to the preparing technical field of porous carbon material, a kind of konjaku flour base porous carbon material is more particularly to
Preparation method and application.
Background technology
Ultracapacitor receives much concern as the efficient energy storage device of a class.Ultracapacitor is because of its excellent performance
It is largely used to the fields such as electric traffic, digital equipment and pulse technique.Some researchers were using Graphene, carbon nanometer in recent years
The characteristics of pipe and excellent electrical conductivity of their compound and specific surface area high, has prepared the super of electrochemical performance
The electrode material of level electric capacity.However, the building-up process of their complexity, high request and high cost to equipment limit super capacitor
Business application.Biomass porous Carbon Materials are widely used as super capacitor because of its low production cost and specific surface area high
Electrode material.
Biomass porous carbon refers to bio-organic materials, and the one kind generated by anoxic or anoxic condition Pintsch process is had
Height aromatization, the cellular solid rich in carbon.Its main component is carbon, with abundant pore structure, larger
Specific surface area, excellent electric conductivity, high temperature resistant and the advantages of acid and alkali-resistance, and more oxygen-content active group is contained on surface.
The raw material of biomass porous carbon is cheap to be easy to get and wide material sources, and many is all crops or their accessory substance.In recent years, with
The various biomass such as melon seed cases, tealeaves, corn and starch prepare high-performance as the activation precursor mixture of porous carbon material
Super capacitor electrode material and obtain in-depth study.Biomass porous carbon can be by the simple charcoal of biomass material
Change and the method for activation is prepared.Biomass porous Carbon Materials why can as the electrode material of super capacitor be due to
Their big specific surface areas, good physical and chemical stability and it is suitable for the excellent pore-size distribution of electrolyte ion size.Separately
Outward, the surface of biomass porous Carbon Materials can be modified by the surface functional group with electro-chemical activity so that electrode material
Not only the characteristic with electric double layer capacitance, while introducing fake capacitance, substantially increases the specific capacitance of electrode material.
Konjaku flour be by fresh Amorphophallus rivieri stem tuber, by drying, mechanical crushing, the product obtained from operation such as selection by winnowing.Konjaku flour
China natural resources are abundant, yield is very big, and annual production is about 15000 tons, accounts for 60 % in the world.Konjaku flour main component is poly- for sweet dew
Sugar, farinose, protein, free reduced sugar and vitamin.Konjaku glucomannan is a kind of natural polymer neutral polysaccharide,
Can be as the template or quantum dot of nano-particle be prepared, while can also obtain porous carbon material by its pyrolysis charring.
In view of the problem of current Graphene, CNT as super capacitance electrode material high cost, and big portion's research
Person is that the gelation of konjaku flour is probed into, and the research that prepared by its charing into porous carbon material is less, and the present invention is with konjaku
Powder is biomass material, and it is first carried out pre- charing, then chooses activator, is lived by high-temperature pressure anoxybiotic pyrolytic process
Change, prepare with low cost, the porous carbon material of high-specific surface area.
The content of the invention
It is an object of the invention to provide a kind of preparation and application of konjaku flour base porous carbon material, super capacitor electricity is solved
Pole material preparation process complexity and preparation cost problem high.Obtained konjaku flour base porous carbon material have it is cheap,
The features such as renewable and electrochemical performance.
For achieving the above object, the present invention is adopted the following technical scheme that：
A kind of preparation method of konjaku flour base porous carbon material, comprises the following steps：
（1）The preparation of pre- carbonizing production：Konjaku powder raw material is fitted into black-fead crucible, is placed in resistance furnace, 200 ~ 500 DEG C absolutely
Oxygen is heated, and the rate of heat addition is 3 ~ 10 DEG C of min-1, room temperature is down to after being pyrolyzed 1 ~ 3 h at ambient pressure, obtain pre- carbonizing production；
（2）Activate the preparation of precursor mixture：The pre- carbonizing production for obtaining is mixed with activator, deionization is added
Water, stirs 5 h in the state of solution, and the solution is dried to constant weight at 60 DEG C, obtains activating precursor mixture；
（3）The preparation of konjaku flour base porous carbon material：Activation precursor mixture is fitted into black-fead crucible, resistance furnace is placed in
In, 500 ~ 1100 DEG C of anoxybiotic heating are warming up to, fully it is down to room temperature, the black solid powder of acquisition after 1 ~ 3 h of pyrolysis at ambient pressure
End is washed through persalt, is dried to constant weight at 60 DEG C, obtains konjaku flour base porous carbon material.
Step（1）Described in heating temperature be 200 ~ 500 DEG C, the rate of heat addition be 3 ~ 10 DEG C of min-1Soaking time
It is 1 ~ 3 h.
Step（2）Described in activator include sodium carbonate, sodium acid carbonate, zinc chloride, phosphoric acid, magnesia, magnesium acetate, hydrogen
One or more in sodium oxide molybdena or potassium hydroxide.
Step（2）Middle activator is 1 with the mass ratio of pre- carbonizing production:30~30:1.
Step（3）The temperature of middle heating is 500 ~ 1100 DEG C, and the rate of heat addition is 3 ~ 10 DEG C of min-1Soaking time is 1 ~ 3
h。
The konjaku flour base porous carbon material that a kind of preparation method as described above is obtained.
Application of the konjaku flour base porous carbon material in electrode material for super capacitor is prepared as described above.
The beneficial effects of the present invention are：
1）The present invention prepares porous carbon material with konjaku flour as raw material by constant-pressure and high-temperature pyrolysis.Raw material of the invention belongs to can
Regenerated resources, cheap, production technology is simple and easy to do, is adapted to large-scale commodity production.
2）Porous charcoal prepared by the present invention possesses specific surface area high, and yield is high, is the new side for preparing porous carbon material
Method, a frontier is provided to produce high performance biomass porous carbon.
3）Porous charcoal prepared by the present invention has excellent chemical property, can be used as the electrode of preferable super capacitor
Material, has expanded the application field of konjaku flour.
Brief description of the drawings
Fig. 1 is the SEM pictures of the konjaku flour base porous carbon material prepared by embodiments of the invention 1；
Fig. 2 is the SEM pictures of the konjaku flour base porous carbon material prepared by embodiments of the invention 2；
Fig. 3 is that the discharge and recharge of konjaku flour base porous carbon material prepared by embodiments of the invention 2 under different current densities is bent
Line；
Fig. 4 is konjaku flour base porous carbon material prepared by embodiments of the invention 2 through the stabilization after 2000 charge and discharge cycles
Linearity curve.
Fig. 5 be konjaku flour base porous carbon material prepared by embodiments of the invention 3 as electrode material in 1 A g-1Electricity
Charging and discharging curve under current density.
Fig. 6 be konjaku flour base porous carbon material prepared by embodiments of the invention 4 as electrode material in 1 A g-1Electricity
Charging and discharging curve under current density.
Specific embodiment
The preparation method of konjaku flour base porous carbon material of the present invention is as follows：
（1）The preparation of pre- carbonizing production：Konjaku powder raw material is fitted into black-fead crucible, is placed in resistance furnace, 200 ~ 500 DEG C（Compared with
Excellent is 300 ~ 500 DEG C）Anoxybiotic is heated, and the rate of heat addition is 3 ~ 10 DEG C of min-1, more excellent is 3 ~ 5 DEG C of min-1；Soaking time is 1
~ 3 h, are fully down to room temperature after pyrolysis at ambient pressure, obtain pre- carbonizing production；
（2）Activate the preparation of precursor mixture：The pre- carbonizing production for obtaining is mixed with activator, activator and pre- charcoal
The mass ratio for changing product is 1:30~30:1, more excellent is 1:1~9:1；Deionized water is added, 5 h are stirred in the state of solution, should
Solution is dried to constant weight at 60 DEG C, obtains activating precursor mixture；
（3）The preparation of konjaku flour base porous carbon material：Activation precursor mixture is fitted into black-fead crucible, resistance furnace is placed in
In, 500 ~ 1100 DEG C（More excellent is 600 ~ 800 DEG C）Anoxybiotic is heated, and the rate of heat addition is 3 ~ 10 DEG C of min-1, more excellent is 3 ~ 5 DEG C
min-1；Soaking time is 1 ~ 3 h, is fully down to room temperature after pyrolysis at ambient pressure, and the black solid powder of acquisition is by 1 mol
L-1Salt acid elution, dries to constant weight at 60 DEG C, obtains konjaku flour base porous carbon material；
（4）It is prepared by electrode：Electrode is prepared using pressed disc method, from stainless (steel) wire as collector, acetylene black as conductive agent, 5
The polytetrafluoroethylene (PTFE) of wt.% is binding agent, by konjaku flour base porous carbon material, acetylene black, polytetrafluoroethylene (PTFE) according to 85:10:5
Mass ratio is mixed, is ground, until grinding flakiness, and thin slice is cut into the shape of 1 cm × 1 cm；Then will cut
Thin slice be placed between two panels nickel foam, be placed under tablet press machine, under the pressure of 10 GPa, the min of pressurize 1, obtain work electricity
Pole；
（5）Electrochemical property test：The test system of electrode uses three-electrode system, and the electrode of sheet is considered as into working electrode,
Then with to electrode and reference electrode, be together placed in electrolyte by electrochemical workstation carry out test konjaku flour base porous charcoal
The chemical property of material.
Wherein, activator includes sodium carbonate, sodium acid carbonate, zinc chloride, phosphoric acid, magnesia, magnesium acetate, NaOH or hydrogen
One or more in potassium oxide.
The purposes of konjaku flour base porous carbon material of the present invention is that konjaku flour base porous carbon material is used as into ultracapacitor
Electrode material.
The following is several specific embodiments of invention, the present invention is further illustrated, it is all according to scope of the present invention patent institute
The impartial change done and modification, should all belong to covering scope of the invention.
Embodiment 1
（1）1.5 g konjaku powder raw materials are fitted into 20 mL black-fead crucibles, are placed in resistance furnace, anoxybiotic carried out at 400 DEG C and is added
Heat, the rate of heat addition is 5 DEG C of min-1, soaking time is 1 h, fully cools to room temperature with the furnace after pyrolysis at ambient pressure, is obtained
Pre- carbonizing production, is put into drier after mortar grinder, stand-by；
（2）Take 1.2 g potassium hydroxide and（1）The g of pre- carbonizing production 0.4 of middle acquisition（Mass ratio is 3:1）, place them into burning
In cup, the deionized water of 20 mL is added, after carrying out the h of magnetic agitation 5, poured into evaporating dish, dried extremely in 60 DEG C of baking ovens
Constant weight, obtains black solid powder, and then grinding obtains activating precursor mixture；
（3）Will（2）In 1.6 g activation precursor mixtures is fitted into 20 mL black-fead crucibles, be placed in resistance furnace, 700 DEG C exhausted
Oxygen is heated, and the rate of heat addition is 5 DEG C of min-1, soaking time is 1 h, fully cools to room temperature with the furnace after pyrolysis at ambient pressure,
The black solid powder of acquisition is by 1 mol L-1Salt acid elution, dries to constant weight at 60 DEG C, obtains biomass porous raw material of wood-charcoal
Material, its SEM picture is as shown in Figure 1.The electrochemical property test result of the biomass porous Carbon Materials of gained shows, the electrode material
Material is in 1 A g-1Electric discharge specific capacitance under current density can reach 185 F g-1。
Embodiment 2
（1）1.5 g konjaku powder raw materials are fitted into 20 mL black-fead crucibles, are placed in resistance furnace, anoxybiotic carried out at 500 DEG C and is added
Heat, the rate of heat addition is 4 DEG C of min-1, soaking time is 1 h, fully cools to room temperature with the furnace after pyrolysis at ambient pressure, is obtained
Pre- carbonizing production, is put into drier after mortar grinder, stand-by；
（2）Take 2.0 g potassium hydroxide and（1）The g of pre- carbonizing production 0.4 of middle acquisition（Mass ratio is 5:1）, place them into burning
In cup, the deionized water of 20 mL is added, after carrying out the h of magnetic agitation 5, poured into evaporating dish, dried extremely in 60 DEG C of baking ovens
Constant weight, obtains black solid powder, and then grinding obtains activating precursor mixture；
（3）Will（2）In 2.4 g activation precursor mixtures is fitted into 20 mL black-fead crucibles, be placed in resistance furnace, 800 DEG C exhausted
Oxygen is heated, and the rate of heat addition is 4 DEG C of min-1, soaking time is 1 h, fully cools to room temperature with the furnace after pyrolysis at ambient pressure,
The black solid powder of acquisition is by 1 mol L-1Salt acid elution, dries to constant weight at 60 DEG C, obtains biomass porous raw material of wood-charcoal
Material, its SEM picture is as shown in Figure 2.The electrochemical property test result of the biomass porous Carbon Materials of gained shows, the electrode material
Material is in 1 A g-1Electric discharge specific capacitance under current density can reach 217 F g-1, its discharge and recharge song under different current densities
As shown in Figure 3, the biomass porous carbon electrode material is through such as institute of accompanying drawing 4 of the stability curve after 2000 charge and discharge cycles for line
Show, retention rate is 94.9 %.
Embodiment 3
（1）1.5 g konjaku powder raw materials are fitted into 20 mL black-fead crucibles, are placed in resistance furnace, anoxybiotic carried out at 500 DEG C and is added
Heat, the rate of heat addition is 2 DEG C of min-1, soaking time is 2h, fully cools to room temperature with the furnace after pyrolysis at ambient pressure, obtains pre-
Carbonizing production, is put into drier after mortar grinder, stand-by；
（2）Take 3.6 g potassium hydroxide and（1）The g of pre- carbonizing production 0.4 of middle acquisition（Mass ratio is 9:1）, place them into burning
In cup, the deionized water of 20 mL is added, after carrying out the h of magnetic agitation 5, poured into evaporating dish, dried extremely in 60 DEG C of baking ovens
Constant weight, obtains black solid powder, and then grinding obtains activating precursor mixture；
（3）Will（2）In 4.0 g activation precursor mixtures is fitted into 20 mL black-fead crucibles, be placed in resistance furnace, 1000 DEG C exhausted
Oxygen is heated, and the rate of heat addition is 1 DEG C of min-1, soaking time is 3 h, fully cools to room temperature with the furnace after pyrolysis at ambient pressure,
The black solid powder of acquisition is by 1 mol L-1Salt acid elution, dries to constant weight at 60 DEG C, obtains konjaku flour base porous charcoal
Material；The electrochemical property test result of the biomass porous Carbon Materials of gained shows that the electrode material is in 1 A g-1Current density
Under electric discharge specific capacitance can reach 187F g-1, as shown in Figure 5.
Embodiment 4
（1）1.5 g konjaku powder raw materials are fitted into 20 mL black-fead crucibles, are placed in resistance furnace, anoxybiotic carried out at 200 DEG C and is added
Heat, the rate of heat addition is 1 DEG C of min-1, soaking time is 3h, fully cools to room temperature with the furnace after pyrolysis at ambient pressure, obtains pre-
Carbonizing production, is put into drier after mortar grinder, stand-by；
（2）Take 2.0 g phosphoric acid and（1）The g of pre- carbonizing production 0.4 of middle acquisition（Mass ratio is 5:1）, in placing them into beaker,
The deionized water of 20 mL is added, after carrying out the h of magnetic agitation 5, is poured into evaporating dish, dried to constant weight in 60 DEG C of baking ovens,
Black solid powder is obtained, then grinding obtains activating precursor mixture；
（3）Will（2）In 2.4 g activation precursor mixtures is fitted into 20 mL black-fead crucibles, be placed in resistance furnace, 600 DEG C exhausted
Oxygen is heated, and the rate of heat addition is 1 DEG C of min-1, soaking time is 3 h, fully cools to room temperature with the furnace after pyrolysis at ambient pressure,
The black solid powder of acquisition is by 1 mol L-1Salt acid elution, dries to constant weight at 60 DEG C, obtains konjaku flour base porous charcoal
Material；The electrochemical property test result of the biomass porous Carbon Materials of gained shows that the electrode material is in 1 A g-1Current density
Under electric discharge specific capacitance can reach 180F g-1, as shown in Figure 6.
Embodiment 5
（1）1.5 g konjaku powder raw materials are fitted into 20 mL black-fead crucibles, are placed in resistance furnace, anoxybiotic carried out at 500 DEG C and is added
Heat, the rate of heat addition is 3 DEG C of min-1, soaking time is 2h, fully cools to room temperature with the furnace after pyrolysis at ambient pressure, obtains pre-
Carbonizing production, is put into drier after mortar grinder, stand-by；
（2）Take 3.6 g phosphoric acid and（1）The g of pre- carbonizing production 0.4 of middle acquisition（Mass ratio is 9:1）, in placing them into beaker,
The deionized water of 20 mL is added, after carrying out the h of magnetic agitation 5, is poured into evaporating dish, dried to constant weight in 60 DEG C of baking ovens,
Black solid powder is obtained, then grinding obtains activating precursor mixture；
（3）Will（2）In 3.2 g activation precursor mixtures is fitted into 20 mL black-fead crucibles, be placed in resistance furnace, 1000 DEG C exhausted
Oxygen is heated, and the rate of heat addition is 3 DEG C of min-1, soaking time is 3 h, fully cools to room temperature with the furnace after pyrolysis at ambient pressure,
The black solid powder of acquisition is by 1 mol L-1Salt acid elution, dries to constant weight at 60 DEG C, obtains konjaku flour base porous charcoal
Material；The electrochemical property test result of the biomass porous Carbon Materials of gained shows that the electrode material is in 1 A g-1Current density
Under electric discharge specific capacitance can reach 134 F g-1。
Embodiment 6
（1）1.5 g konjaku powder raw materials are fitted into 20 mL black-fead crucibles, are placed in resistance furnace, anoxybiotic carried out at 400 DEG C and is added
Heat, the rate of heat addition is 3 DEG C of min-1, soaking time is 2 h, fully cools to room temperature with the furnace after pyrolysis at ambient pressure, is obtained
Pre- carbonizing production, is put into drier after mortar grinder, stand-by；
（2）Take 2.8 g zinc chloride and（1）The g of pre- carbonizing production 0.4 of middle acquisition（Mass ratio is 7:1）, place them into beaker
In, the deionized water of 20 mL is added, after carrying out the h of magnetic agitation 5, pour into evaporating dish, dried to perseverance in 60 DEG C of baking ovens
Weight, obtains black solid powder, and then grinding obtains activating precursor mixture；
（3）Will（2）In 3.2 g activation precursor mixtures is fitted into 20 mL black-fead crucibles, be placed in resistance furnace, 700 DEG C exhausted
Oxygen is heated, and the rate of heat addition is 3 DEG C of min-1, soaking time is 2 h, fully cools to room temperature with the furnace after pyrolysis at ambient pressure,
The black solid powder of acquisition is by 1 mol L-1Salt acid elution, dries to constant weight at 60 DEG C, obtains konjaku flour base porous charcoal
Material；The electrochemical property test result of the biomass porous Carbon Materials of gained shows that the electrode material is in 1 A g-1Current density
Under electric discharge specific capacitance can reach 178 F g-1。
Claims (8)
1. a kind of preparation method of konjaku flour base porous carbon material, it is characterised in that first that konjaku powder raw material is warm at ambient pressure
Solution obtains pre- carbonizing production；Then take pre- carbonizing production carries out being mixed to get activation precursor mixture with activator, finally leads to
Cross high temperature anoxybiotic pyrolytic process and konjaku flour base porous carbon material is obtained.
2. the preparation method of konjaku flour base porous carbon material according to claim 1, it is characterised in that including following step
Suddenly：
（1）The preparation of pre- carbonizing production：Konjaku powder raw material is fitted into black-fead crucible, is placed in resistance furnace, 200 ~ 500 DEG C absolutely
Oxygen is heated, and the rate of heat addition is 3 ~ 10 DEG C of min-1, room temperature is down to after being pyrolyzed 1 ~ 3 h at ambient pressure, obtain pre- carbonizing production；
（2）Activate the preparation of precursor mixture：The pre- carbonizing production for obtaining is mixed with activator, deionization is added
Water, stirs 5 h in the state of solution, and the solution is dried to constant weight at 60 DEG C, obtains activating precursor mixture；
（3）The preparation of konjaku flour base porous carbon material：Activation precursor mixture is fitted into black-fead crucible, resistance furnace is placed in
In, 500 ~ 1100 DEG C of anoxybiotic heating are warming up to, fully it is down to room temperature, the black solid powder of acquisition after 1 ~ 3 h of pyrolysis at ambient pressure
End is washed through persalt, is dried to constant weight at 60 DEG C, obtains konjaku flour base porous carbon material.
3. preparation method according to claim 2, it is characterised in that：Step（1）Described in pre- carbonization temperature for 200 ~
500 DEG C, the rate of heat addition is 3 ~ 10 DEG C of min-1, soaking time is 1 ~ 3 h.
4. preparation method according to claim 2, it is characterised in that：Step（2）Described in activator include sodium carbonate,
One or more in sodium acid carbonate, zinc chloride, phosphoric acid, magnesia, magnesium acetate, NaOH or potassium hydroxide.
5. preparation method according to claim 2, it is characterised in that：Step（2）The matter of middle activator and pre- carbonizing production
Amount is than being 1:30~30:1.
6. preparation method according to claim 2, it is characterised in that：Step（3）The temperature of middle heating is 500 ~ 1100
DEG C, the rate of heat addition is 3 ~ 10 DEG C of min-1, soaking time is 1 ~ 3 h.
7. a kind of preparation method as described in claim any one of 1-6 obtains konjaku flour base porous carbon material.
8. a kind of application of konjaku flour base porous carbon material as claimed in claim 7, it is characterised in that：For preparing super electricity
Container electrode material.
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| CN113620290A (en) * | 2020-05-06 | 2021-11-09 | 桐源（上海）网络技术有限公司 | Preparation method of air purification active carbon adsorption material |
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| CN108314045A (en) * | 2018-04-27 | 2018-07-24 | 厦门理工学院 | A kind of porous carbon material and its preparation method and application being used to prepare capacitor or battery |
| CN109734085A (en) * | 2019-03-22 | 2019-05-10 | 兰州理工大学 | Potato-based porous carbon preparation method for material for electrode material for super capacitor |
| CN110028050A (en) * | 2019-04-17 | 2019-07-19 | 东南大学 | A method of supercapacitor Carbon Materials are prepared using bio oil |
| CN113620290A (en) * | 2020-05-06 | 2021-11-09 | 桐源（上海）网络技术有限公司 | Preparation method of air purification active carbon adsorption material |
| CN113620290B (en) * | 2020-05-06 | 2023-03-10 | 桐源（上海）网络技术有限公司 | Preparation method of air purification activated carbon adsorption material |
| CN111591973A (en) * | 2020-06-29 | 2020-08-28 | 盐城工学院 | Suaeda salsa-based porous carbon and preparation method thereof |
| CN111591973B (en) * | 2020-06-29 | 2023-09-29 | 盐城工学院 | Suaeda salsa-based porous carbon and preparation method thereof |
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| CN106892417B (en) | 2018-11-27 |
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