CN107954422A - The preparation and application of a kind of mesoporous biological matter carbon plate material of high-specific surface area - Google Patents
The preparation and application of a kind of mesoporous biological matter carbon plate material of high-specific surface area Download PDFInfo
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- CN107954422A CN107954422A CN201711144169.4A CN201711144169A CN107954422A CN 107954422 A CN107954422 A CN 107954422A CN 201711144169 A CN201711144169 A CN 201711144169A CN 107954422 A CN107954422 A CN 107954422A
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- surface area
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- 239000000463 material Substances 0.000 title claims abstract description 75
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 48
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 239000002028 Biomass Substances 0.000 claims abstract description 36
- 239000003990 capacitor Substances 0.000 claims abstract description 23
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 30
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims description 26
- 244000132436 Myrica rubra Species 0.000 claims description 21
- 235000005074 zinc chloride Nutrition 0.000 claims description 13
- 239000011592 zinc chloride Substances 0.000 claims description 13
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 12
- 239000012190 activator Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 9
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 9
- 239000011261 inert gas Substances 0.000 claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 6
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 6
- 239000006260 foam Substances 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- 235000002639 sodium chloride Nutrition 0.000 claims description 6
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000006230 acetylene black Substances 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000012153 distilled water Substances 0.000 claims description 3
- 238000010828 elution Methods 0.000 claims description 3
- 239000006210 lotion Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000001103 potassium chloride Substances 0.000 claims description 3
- 235000011164 potassium chloride Nutrition 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- 239000011780 sodium chloride Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 229910052786 argon Inorganic materials 0.000 claims description 2
- 239000007789 gas Substances 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims 1
- 238000003763 carbonization Methods 0.000 abstract description 4
- 230000004913 activation Effects 0.000 abstract description 3
- 239000012620 biological material Substances 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 abstract 1
- 238000000197 pyrolysis Methods 0.000 abstract 1
- 239000003575 carbonaceous material Substances 0.000 description 8
- 230000009286 beneficial effect Effects 0.000 description 7
- 230000005611 electricity Effects 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000000840 electrochemical analysis Methods 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000005336 cracking Methods 0.000 description 2
- 238000002484 cyclic voltammetry Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000007772 electrode material Substances 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 241001412225 Firmiana simplex Species 0.000 description 1
- 229920002488 Hemicellulose Polymers 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 206010054949 Metaplasia Diseases 0.000 description 1
- IUHFWCGCSVTMPG-UHFFFAOYSA-N [C].[C] Chemical group [C].[C] IUHFWCGCSVTMPG-UHFFFAOYSA-N 0.000 description 1
- LPQOADBMXVRBNX-UHFFFAOYSA-N ac1ldcw0 Chemical compound Cl.C1CN(C)CCN1C1=C(F)C=C2C(=O)C(C(O)=O)=CN3CCSC1=C32 LPQOADBMXVRBNX-UHFFFAOYSA-N 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 210000003850 cellular structure Anatomy 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005906 dihydroxylation reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000015689 metaplastic ossification Effects 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 229920001542 oligosaccharide Polymers 0.000 description 1
- 150000002482 oligosaccharides Chemical class 0.000 description 1
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- 238000005554 pickling Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000002336 sorption--desorption measurement Methods 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
- 239000011885 synergistic combination Substances 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
Classifications
-
- 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
-
- 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 present invention provides a kind of preparation method and application of the mesoporous biological matter carbon plate material of high-specific surface area, by biological material by activation carbonization pyrolysis and etc. the high specific surface area and mesoporous biomass carbon sheet material activated, with excellent electric property, energy density is up to 84.2Whkg‑1, power density is up to 39700.9Wkg‑1, and high rate during charging-discharging is excellent.So as to applied to capacitor area, especially ultracapacitor field, have a good application prospect and industrialization potential.
Description
Technical field
The present invention relates to a kind of biological carbon materials, and in particular to a kind of mesoporous biological matter carbon plate material of high-specific surface area
Preparation method and use, belongs to electrodeless functional material and electrochemical energy technical field.
Background technology
The development of the sustainable clean energy resource such as solar energy and wind energy, is among others dependent on advanced energy-storage system, such as rechargeable battery
And ultracapacitor.On the other hand, the portable electronic device market of rapid growth is also required to more and more have high-performance
Energy storage system.The ultracapacitor of the unique advantages such as such as high power density, large capacity, low cost, long circulation life.
At present, biomass is world's fourth largest energy, accounts for the 14% of world energy sources, the 38% of developing country's demand is accounted for, with biomass
Electrode material is prepared for carbon source, there is abundant raw material, environmental-friendly, cost is low, sustainable, renewable, and makes letter
It is single, meet current social demand.Therefore the trend that carbon material is current social development is prepared using biomass.
Made of plant biological material carbon material because of it with light weight, the porosity is high, structural stability is good, easily leads
The characteristics such as electricity, have a wide range of applications in the electrochemical energy storing devices such as battery and ultracapacitor.Compared at present in business
Change the graphite material that uses on ultracapacitor, biological material can provide the specific capacity of higher, more preferably high rate performance with more
Big compacted density, is the ideal chose of super capacitor material of future generation.In recent years, many research workers are in research biology
The preparation of activated carbon, for example, preparing carbon material using catkin, Yang Xu, Chinese parasol tree wadding, corncob, bombax cotton.But also exist
The defects of high current charge-discharge is difficult, energy density is low, cycle life is short, seriously limits its actual application and industrial metaplasia
Production.
Therefore based on the defects of preparing electrode material for super capacitor currently with biomass, how to provide a kind of high performance
Biological carbon materials improve capacitor performance for the preparation of super capacitor electrode, are that current those skilled in the art are urgently to be resolved hurrily
The problem of.
The content of the invention
In view of the above-mentioned problems, it is an object of the invention to provide a kind of high-specific surface area prepared available for ultracapacitor
Mesoporous biological carbon plate material preparation method, high-performance is made through special activation, carburising step using biomass material
Biological carbon material.
To achieve these goals, the present invention adopts the following technical scheme that：
A kind of preparation method of high specific surface area and mesoporous biomass carbon sheet material, it is characterised in that include the following steps：
(1) red bayberry is done, the mixing of activator and formaldehyde is placed in high-pressure reactor and is reacted, cold after reaction
But, filter；
(2) filtered material vacuum drying will be crossed in the step (1)；
(3) dried high-temperature sample in the step (2) is handled, then cooled to room temperature, obtains activated material；
(4) obtained material in the step (3) is first washed with distilled water to neutrality again with salt acid elution, then vacuum is done
It is dry, that is, obtain high specific surface area and mesoporous biomass carbon sheet material.
The beneficial effect of such scheme is：The present invention uses red bayberry to do for raw material, is given birth to after special activation carbonization
Material carbon plate material, obtained carbon plate material have the specific surface area of higher, and then it is possessed better chemical property.
Preferably, activator described in step (1) is one kind in zinc chloride, sodium chloride, potassium chloride.
Take having the beneficial effect that for above-mentioned preferred solution：Activator has the function that to be catalyzed dehydroxylation and dehydration so that former
Hydrogen and oxygen in material are released in the form of water vapour, form cellular structure, and activator vaporizes under high temperature, activator molecule
Skeleton function is played inside into carbon, is deposited on after the high polymer charing of carbon on skeleton, after pickling deactivator, carbon reforms into
Loose structure activated carbon with high-specific surface area, therefore activator is conducive to extensible material micropore.
Preferably, concentration of hydrochloric acid described in step (4) is 1mol/L.
Preferably, it is 1 that red bayberry described in step (1), which is done with the mass ratio of the activator,:1-10, is most preferably 1:6, institute
It is 5 to state red bayberry and do with the mass ratio of the formaldehyde:7-14, is most preferably 5:9.
Take having the beneficial effect that for above-mentioned preferred solution：Ensure the excess of activator and formaldehyde, be conducive to that red bayberry does fills
Divide carbonization and the expansion for sky.
Preferably, the temperature conditionss reacted in step (1) mesohigh reactor are 150-200 DEG C.
Take having the beneficial effect that for above-mentioned preferred solution：The degraded of biomass each component under hydro-thermal and cracking condition is main
It is influenced by temperature, can extract 150-180 DEG C of low molecule organic matter and hydro-thermal charing occurs；Hemicellulose is in 150-190 DEG C of generation
Ether bond rupture generates oligosaccharide and monose and the hydrolysis carbonization temperature of cellulose is higher, generally more than 220 DEG C, using this temperature
The charing of high pressure hydro-thermal, which can fully dissolve, carbonizes different component materials, up to optimal charred effect.
Preferably, high-temperature process described in step (3) carries out under inert gas shielding and inert gas is nitrogen, argon gas
In one kind, temperature conditionss be 700-1000 DEG C.
Take having the beneficial effect that for above-mentioned preferred solution：It can prevent carbon carbon skeleton in oxygen by oxygen in atmosphere of inert gases
It is melted into CO2And macroporous structure is collapsed into, possess the original small charcoal skeleton structure of biomass to greatest extent, therefore inert gas atmosphere
The specific surface area that high temperature cracking further improves biological carbon material is enclosed, and atmosphere of inert gases is reacted, and makes reaction more
It is uniform and stable.
It is a further object to provide one kind to use high specific surface area and mesoporous biomass carbon made from the above method
Sheet material.
Present invention also offers a kind of answering using high specific surface area and mesoporous biomass carbon sheet material made from the above method
With method, that is, use it for the preparation of electrode for capacitors.
Specifically, capacitor electricity is prepared using high specific surface area and mesoporous biomass carbon sheet material present invention also offers one kind
The preparation method of pole, comprises the following steps：
S1. with the high specific surface area and mesoporous biomass carbon sheet material of mass ratio：Acetylene black：PTFE (polytetrafluoroethylene (PTFE)) lotion=
80:10:10 weigh material, add ethanol, are uniformly mixed, stir into starchiness and be coated onto in nickel foam；
S2. the nickel foam for coating the high specific surface area and mesoporous biomass carbon sheet material is dried, tabletting, that is, obtained
The electrode for capacitors.
The beneficial effect of above-mentioned technical proposal is：A kind of electrode for capacitors with good chemical property has been made, its
Not only capacity is big, long lifespan, high rate performance are good, but also preparation method is simply of low cost, is conducive to promote the use of.
Finally, there is high specific surface area and mesoporous biomass carbon plate comprising prepared by the above method present invention also offers a kind of
The electrode for capacitors of material.
In conclusion beneficial effects of the present invention are：It provide not only a kind of high specific surface area and mesoporous biomass carbon sheet material
Material and preparation method thereof, additionally provides the application process of high specific surface area and mesoporous biomass carbon sheet material and its prepared capacitance
Device electrode, makes obtained electrode have good chemical property, high current charge-discharge is easy, energy density is high, cycle life
It is long, it is important that preparation process is easy and of low cost, suitable for industrial production, has highly application value.
Brief description of the drawings
Fig. 1 is the scanning electron microscope (SEM) photograph of the mesoporous biological matter carbon plate material of the high-specific surface area obtained by the embodiment of the present invention 1
(SEM)。
Fig. 2 is the nitrogen adsorption desorption of the mesoporous biological matter carbon plate material of the high-specific surface area obtained by the embodiment of the present invention 1
Isothermal curve and pore size distribution curve figure.
Prepared by Fig. 3 is the mesoporous biological matter carbon plate material using 1 high-specific surface area of embodiment of the present invention capacitor electricity
Cyclic voltammetry curve figure of the pole under different scanning rates.
Prepared by Fig. 4 is the mesoporous biological matter carbon plate material using 1 high-specific surface area of embodiment of the present invention capacitor electricity
Constant current charge-discharge curve map of the pole under different current densities.
Fig. 5 is the mesoporous biological matter carbon plate material using 1 high-specific surface area of the embodiment of the present invention in 1Ag-1Current density
The constant current charge-discharge curve map of sample after lower different disposal temperature.
Fig. 6 is the mesoporous biological matter carbon plate material different quality ratio using 1 high-specific surface area of the embodiment of the present invention in 1A
g-1Constant current charge-discharge curve map.
Prepared by Fig. 7 is the mesoporous biological matter carbon plate material using 1 high-specific surface area of embodiment of the present invention capacitor electricity
Pole is in 10Ag-1Cyclical stability test chart under current density.
Prepared by Fig. 8 is the mesoporous biological matter carbon plate material using 1 high-specific surface area of embodiment of the present invention capacitor
Ragone curve maps.
Embodiment
Just the embodiment of the present invention is described further below.
Unless otherwise instructed, the raw material employed in the present invention is commercially available or commonly used in the art, such as
Without special instruction, the method in following embodiments is the conventional method of this area.
Embodiment 1
(1) red bayberry is done into 1g, zinc chloride 6g and formaldehyde 1.5mL (i.e. red bayberry does：Zinc chloride=1:6, red bayberry does：Formaldehyde=
5：9) mixing, which is placed in high-pressure reactor, is reacted, and 160 DEG C of reaction temperature, cools down after reaction, filtering；
(2) it will be crossed in step (1) at 100 DEG C of filtered material and be dried in vacuo 10h；
(3) dried sample in step (2) is subjected to high-temperature process for 800 DEG C under inert gas shielding, it is then natural
It is cooled to room temperature, obtains activated material；
(4) gained activated material in step (3) is first washed with distilled water to neutrality again with 1mol/L salt acid elutions, then
It is dry in vacuum tank, that is, high specific surface area and mesoporous biomass carbon sheet material is obtained, is named as CS1.
Embodiment 2
Zinc chloride in embodiment 1 is changed to sodium chloride, remaining condition is constant.
Embodiment 3
Zinc chloride in embodiment 1 is changed to potassium chloride, remaining condition is constant.
Embodiment 4
By 1,2,3 obtained material of embodiment in current density 1Ag-1Lower carry out electro-chemical test, test result such as following table：
Conclusion：When activator uses zinc chloride, products therefrom capacitance highest.Therefore following embodiments use zinc chloride to live
Agent.
Embodiment 5
Red bayberry in embodiment 1 is done：Zinc chloride=1:6 are changed to 1:10；Remaining condition is constant.
Embodiment 6
Red bayberry in embodiment 1 is done：Zinc chloride=1:6 are changed to 1:1；Remaining condition is constant.
Embodiment 7
By 1,5,6 obtained material of embodiment in current density 1Ag-1Lower carry out electro-chemical test, test result such as Fig. 6,
It is analyzed as follows table following table：
| Red bayberry does：Zinc chloride | Capacitance (Fg-1) |
| 1:6 | 228.6 |
| 1:10 | 161 |
| 1:1 | 149 |
Conclusion：Red bayberry does：Zinc chloride=1:When 6, products therefrom capacitance highest.Therefore following embodiments are done using red bayberry：
Zinc chloride=1:6.
Embodiment 8
Red bayberry in embodiment 1 is done：Formaldehyde=5:9 are changed to 5:7, remaining reaction condition is constant.
Embodiment 9
Red bayberry in embodiment 1 is done：Formaldehyde=5:9 are changed to 5:14, remaining reaction condition is constant.
Embodiment 10
By 1,8,9 obtained material of embodiment in current density 1Ag-1Lower carry out electro-chemical test, test result such as following table：
| Red bayberry does：Formaldehyde | Capacitance (Fg-1) |
| 5:7 | 167.2 |
| 5:9 | 228.6 |
| 5:14 | 158.7 |
Conclusion：Red bayberry does：Formaldehyde=5:When 9, products therefrom capacitance highest.Therefore following embodiments are done using red bayberry：First
Aldehyde=5:9.
Embodiment 11
1 high temperature treatment temperature of embodiment is changed to 700 DEG C for 800 DEG C, remaining reaction condition is constant, and obtained material is named as
CS2。
Embodiment 12
1 high temperature treatment temperature of embodiment is changed to 1000 DEG C for 800 DEG C, remaining reaction condition is constant, obtained material name
For CS3.
Embodiment 13
Result such as following table can be obtained by Fig. 2,3,4：
| Treatment temperature (DEG C) | Specific surface area (m2/g) |
| CS1(800℃) | 1191.0 |
| CS2(700℃) | 939.2 |
| CS3(1000℃) | 1026.3 |
Conclusion：Specific surface area is maximum when CS1 calcining heats are 800 DEG C, in electric double layer capacitance, the bigger electrochemistry of specific surface area
Performance is better.
Embodiment 14
It is as follows that result can be obtained by Fig. 5：
Conclusion：800 DEG C are optimum temperature, can obtain the activated material with optimal performance at this time.
Embodiment 15
By above-described embodiment and interpretation of result, the material and parameter that embodiment 1 is taken are used as optimum embodiment, therefore are used
High specific surface area and mesoporous biomass carbon sheet material CS1 obtained by embodiment 1 prepares capacitor electricity electrode, including following step
Suddenly：
S1. with the high specific surface area and mesoporous biomass carbon sheet material of mass ratio：Acetylene black：PTFE (polytetrafluoroethylene (PTFE)) lotion=
80:10:10 weigh material, add ethanol, are uniformly mixed, stir into starchiness and be coated onto in nickel foam；
S2. the nickel foam for coating the high specific surface area and mesoporous biomass carbon sheet material is dried, tabletting, that is, obtained
The electrode for capacitors
Electrical performance testing：
(1) Fig. 3 is cyclic voltammogram of the electrode for capacitors under different scanning rates prepared by using CS1.In figure,
The sweep speed of top-down three closed circular curves (i.e. highest lights downward arrangement) is followed successively by 10mVs-1、5mV·
s-1And 1mVs-1.Conclusion：The material has preferable chemical property.
(2) Fig. 4 is constant current charge-discharge diagram of the electrode for capacitors under different current densities prepared by using CS1.Scheming
In, it is followed successively by 1Ag from right and a left side current density-1、5A·g-1And 10Ag-1.S1 is in 20Ag for the material C-1Multiplying power under
Discharge and recharge, capacitance are computed still having 179.6Fg-1, in 0.1Ag-1Multiplying power under capacity have 605.0Fg-1.Conclusion：This
Prove that the material C S1 can show excellent chemical property in high current, low current discharge and recharge.
(3) Fig. 7 be prepared by using CS1 electrode for capacitors in 10Ag-1Current density under cyclical stability figure.
It may be seen that the material is in 10Ag-1Current density under have extraordinary cyclical stability, circulation 50000 circle after hold
Amount keeps 100%, shows excellent cyclical stability.
(4) Fig. 8 is the Ragone figures of electrode for capacitors prepared by using CS1.It may be seen that current density 80A
g-1When power density be up to 39700.9Wkg-1, current density 0.1Ag-1When energy density be up to 84.2Whkg-1。
As described above, the preparation method of the present invention passes through specific technique it can be seen from above-mentioned all embodiments
The synergistic combination and coordinative role of step, technological parameter and material selection etc., so as to obtain the work with excellent electric property
The abandoned biomass carbon material of change, so as to may be used on capacitor area, has a good application prospect and industrialization potential.
The basic principles, main features and the advantages of the invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.
Claims (10)
1. a kind of preparation method of high specific surface area and mesoporous biomass carbon sheet material, it is characterised in that include the following steps：
(1) red bayberry is done, the mixing of activator and formaldehyde is placed in high-pressure reactor and is reacted, cool down after reaction, mistake
Filter；
(2) filtered material drying will be crossed in the step (1)；
(3) dried high-temperature sample in the step (2) is handled, then cooled to room temperature, obtains activated material；
(4) obtained material in the step (3) is first washed with distilled water to neutrality with salt acid elution again, is then dried in vacuo,
Obtain high specific surface area and mesoporous biomass carbon sheet material.
2. a kind of preparation method of high specific surface area and mesoporous biomass carbon sheet material according to claim 1, its feature exist
In activator described in step (1) is zinc chloride, one kind in sodium chloride, potassium chloride.
3. a kind of preparation method of high specific surface area and mesoporous biomass carbon sheet material according to claim 1, its feature exist
In concentration of hydrochloric acid described in step (4) is 1mol/L.
4. a kind of preparation method of high specific surface area and mesoporous biomass carbon sheet material according to claim 1, its feature exist
In it is 1 that red bayberry described in step (1), which is done with the mass ratio of the activator,:1-10, the red bayberry do the quality with the formaldehyde
Than for 5:7-14.
5. a kind of preparation method of high specific surface area and mesoporous biomass carbon sheet material according to claim 1, its feature exist
In the temperature conditionss reacted in step (1) mesohigh reactor are 150-200 DEG C.
6. a kind of preparation method of high specific surface area and mesoporous biomass carbon sheet material according to claim 1, its feature exist
In, high-temperature process described in step (3) carried out under inert gas shielding and inert gas be nitrogen, one kind in argon gas, temperature
Degree condition is 700-1000 DEG C.
7. according to a kind of high specific surface area and mesoporous biomass carbon sheet material of claim 1-6 any one of them, it is characterised in that
It is made using this method.
A kind of 8. application of high specific surface area and mesoporous biomass carbon sheet material, it is characterised in that the preparation for electrode for capacitors.
9. the application of a kind of high specific surface area and mesoporous biomass carbon sheet material according to claim 8, it is characterised in that should
It is as follows with step：
S1. with the high specific surface area and mesoporous biomass carbon sheet material of mass ratio：Acetylene black：PTFE (polytetrafluoroethylene (PTFE)) lotion=80:
10:10 weigh material, add ethanol, are uniformly mixed, stir into starchiness and be coated onto in nickel foam；
S2. the nickel foam for coating the high specific surface area and mesoporous biomass carbon sheet material is dried, tabletting, that is, obtained described
Electrode for capacitors.
10. a kind of high specific surface area and mesoporous biomass carbon sheet material capacitance electrode according to claim 9, its feature exist
In being made using this method.
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Application publication date: 20180424 Assignee: WENZHOU OUHONG SEAL Co.,Ltd. Assignor: INSTITUTE OF NEW MATERIALS & INDUSTRIAL TECHNOLOGY, WENZHOU University Contract record no.: X2021330000044 Denomination of invention: Preparation and application of mesoporous biomass carbon sheet with high specific surface area Granted publication date: 20200124 License type: Common License Record date: 20210521 |