CN107244670A - A kind of bigger serface carbon material and preparation method thereof and for super capacitor material - Google Patents
A kind of bigger serface carbon material and preparation method thereof and for super capacitor material Download PDFInfo
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- CN107244670A CN107244670A CN201610190460.4A CN201610190460A CN107244670A CN 107244670 A CN107244670 A CN 107244670A CN 201610190460 A CN201610190460 A CN 201610190460A CN 107244670 A CN107244670 A CN 107244670A
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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
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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
- C01P2006/12—Surface area
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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 invention discloses a kind of bigger serface carbon material and preparation method thereof, using raw coal as raw material, potassium hydroxide is the processing upgrading and modification that activator carries out multistage technology, bigger serface carbon material is made, the specific surface area of carbon material adds 950 times than raw coal, and the specific surface area of the carbon material is 2500m to the maximum2/g；The high-quality carbon material of preparation is used for super capacitance electrode material, when current density is 0.2A/g, specific capacitance is 264F/g, when current density is 1A/g, specific capacitance is 198F/g, and super capacitance electrode material stability of the specific capacitance of charge and discharge cycles 5000 times under conditions of 5A/g is higher than 95%.The present invention improves the specific surface area of high-quality carbon material by regulating and controlling alkali carbon ratio, activation temperature and soak time in activation process, so as to improve the specific capacitance of material, the preparation technology flow of bigger serface carbon material is simple, improves preparation efficiency, controllability is good.
Description
Technical field
The present invention relates to electrode material for super capacitor field, and in particular to a kind of bigger serface carbon material
And preparation method thereof and for super capacitor material.
Background technology
Now with the sustainable growth developed rapidly with energy demand of human society, cause conventional fossil energy
Source is drastically reduced, global ecological environment goes from bad to worse.Greatly develop cleaning, the reproducible energy
It is extremely urgent.Ultracapacitor can be widely applied to auto industry, aviation as a kind of clean energy resource
The multiple fields such as space flight, science and techniques of defence, information technology, electronics industry.
Ultracapacitor because its power density is big, have extended cycle life, charge-discharge velocity is fast, environmental pollution is small,
Non-maintaining the features such as, becomes a kind of new green energy resource, so as to have received extensive concern.Super electricity
Container is called electrochemical capacitor, is that a class performance is new between physical capacitor and secondary cell
Energy storage device, with the specific capacitance higher than ordinary capacitor and energy density, and has than electricity simultaneously
The higher power density in pond.Ultracapacitor according to the difference of electrode material can be divided into carbon electrode capacitor,
Metal oxide based capacitor and conducting polymer based capacitor；It can be divided into according to the difference of energy storage mechnism double
Electric layer capacitor and faraday (counterfeit) capacity capacitor.Faraday's capacitor is based on hair on electrode interface
Reversible, quick redox reaction is given birth to store energy.Double layer capacitor is to be based on electrode and electrolysis
The interfacial electric double layer electric capacity that is formed between matter stores energy.
Electrode material is the key of ultracapacitor, and it decides the main performance index of ultracapacitor.
Carbon material is the material for being used as ultracapacitor active material earliest, is also to use most electrode materials at present
Material.At present, various carbon materials, including activated carbon, CNT, masterplate carbon, graphene, by
It is considered as electrode material.Wherein, activated carbon is because its specific surface area is big, easily preparation, price are low
Feature, is still the preferred material for preparing electrode material for super capacitor, but its specific capacity and energy are close
Degree compares relatively low.It is reported that specific surface area, pore-size distribution, surface functional group are influence carbon electrode materials
Expect the principal element of performance.At present, can by improve material specific surface area, adjustment pore-size distribution,
Surface the means such as is modified and accordingly improves its specific capacity.
Carbon-rich material, such as timber, shell, polymer, coal are all the manufacture preferable presomas of activated carbon,
Wherein coal is the most frequently used material, and the technology that it prepares activated carbon is quite ripe.Such as Publication No.
CN1202004C, CN1178853C, CN1120800C and CN1032056C patent document all disclose with
Coal is the technology that raw material prepares activated carbon.Coal is constantly reduced as non-renewable energy resources, its global reserves,
Exploitation difficulty constantly increases, therefore converts coal into the high quality carbon material electrodes material of efficient value
Become research and development focus instantly.
At present, the preparation of absorbent charcoal material is main passes through physically activated and chemical activation two ways.With thing
Reason activation method is compared, and the activation temperature that chemical activation method needs is low, soak time is short, and obtained production
Product have higher specific surface area and more flourishing pore structure.In various chemical activating agents, pass through regulation and control
The conditions such as alkali carbon ratio, soak time in activation process, can be made the electrode of excellent chemical property
Material.
The content of the invention
It is an object of the invention to the problem above for overcoming prior art presence, there is provided a kind of bigger serface
Carbon material and preparation method thereof and for super capacitor material, the present invention is by regulating and controlling the alkali in activation process
Carbon ratio, activation temperature and soak time improve the specific surface area of high-quality carbon material, so as to improve material
Specific capacitance；High-quality carbon material prepared by the present invention possesses good super capacitor performance, is in current density
Its specific capacitance is up to 264F/g during 0.2A/g, and in 1A/g, its specific capacitance is 198F/g, while discharge and recharge is followed
The stability of 5000 its specific capacitances of ring is up to more than 95%.
To realize above-mentioned technical purpose and the technique effect, the present invention is real by the following technical programs
It is existing：
A kind of bigger serface carbon material and preparation method thereof, using raw coal as raw material, potassium hydroxide is activation
Agent carries out the processing upgrading and modification of multistage technology, and bigger serface carbon material, the ratio table of carbon material is made
Area adds 950 times than raw coal, and the specific surface area of the carbon material can reach 2500m2/g；
The high-quality carbon material of preparation is used for super capacitance electrode material, when current density is 0.2A/g, than
Electric capacity is 264F/g, and when current density is 1A/g, specific capacitance is 198F/g, and the carbon material material exists
The stability of the specific capacitance of charge and discharge cycles 5000 times is more than 95% under conditions of 5A/g；
The method for preparing bigger serface carbon material comprises the following steps：
(1) crush：Using raw coal as raw material, crush and screen, then carry out drying and processing；
(2) mix：Raw coal particle after will be broken is put into multifunctional crusher with potassium hydroxide fully to be stirred
Mix well mixed, obtain mixed product；
(3) activate：The mix products that step (2) is obtained are placed in tube furnace, under the protection of atmosphere,
Heated up with the heating rate of setting, be warming up to 500-950 DEG C of activation temperature, soak time is that 0.5-36 is small
When；
(4) wash：The product watery hydrochloric acid and deionized water washing and filtering that step (3) is obtained, repeatedly
Cyclic washing to pH value is neutrality, suction filtration；
(5) dry：The product that step (4) is obtained is dried in an oven, obtains coal base high-quality carbon material
Product.
In the preferred embodiment of the present invention, further comprise：Raw coal described in step (1) is height
Rank coal or low-order coal.
In the preferred embodiment of the present invention, further comprise：Hydroxide described in step (2)
Potassium is activator, and the potassium hydroxide is solid or solution, when the potassium hydroxide is solution, is rubbed
Your concentration is 0.1-10.01M, and the quality of the potassium hydroxide and the mass ratio of raw coal are 1-7.
In the preferred embodiment of the present invention, further comprise：Heating rate is in step (3)
0.5-30℃/min。
In the preferred embodiment of the present invention, further comprise：Watery hydrochloric acid described in step (4)
Molar concentration is 0.1-10.01M.
In the preferred embodiment of the present invention, further comprise：Product is in an oven in step (5)
Dry temperature is 80-150 DEG C, and drying time is 0.5-36 hours.
In the preferred embodiment of the present invention, further comprise：Atmosphere in step (3) is nitrogen
Or argon gas.
In the preferred embodiment of the present invention, further comprise：The specific surface area of the carbon material is
700-2500m2/g。
In the preferred embodiment of the present invention, further comprise：The high-quality carbon material of preparation is used to surpass
Level capacitance electrode material, when current density is 0.2A/g, specific capacitance is 264F/g, is in current density
During 1A/g, specific capacitance is 198F/g, carbon material material charge and discharge cycles 5000 under conditions of 5A/g
The stability of secondary specific capacitance is more than 95%.
The beneficial effects of the invention are as follows:
One, the present invention are carried by regulating and controlling alkali carbon ratio, activation temperature and soak time in activation process
The specific surface area of high high-quality carbon material, so that the specific capacitance of material is improved, bigger serface carbon materials of the present invention
The preparation technology flow of material is simple, improves preparation efficiency, controllability is good.
Secondly, the electrode material for preparing of the present invention in 6mol/L potassium hydroxide, using three-electrode system
Its chemical property is tested, using mercuric oxide electrode as reference electrode, platinum electrode is to electrode；As a result show
Show, high-quality carbon material prepared by the present invention possesses good super capacitor performance, be 0.2A/g in current density
When specific capacitance be up to 264F/g, in 1A/g specific capacitance be 198F/g, while under conditions of 5A/g
The stability of 5000 its specific capacitances of charge and discharge cycles is up to more than 95%.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the skill of the present invention
Art means, and being practiced according to the content of specification, with presently preferred embodiments of the present invention and match somebody with somebody below
Accompanying drawing is closed to describe in detail as after.The embodiment of the present invention is given in detail by following examples and its accompanying drawing
Go out.
Brief description of the drawings
Technical scheme in technology in order to illustrate the embodiments of the present invention more clearly, below will be to embodiment skill
The accompanying drawing used required in art description makees brief introduction, and drawings in the following description are the one of the present invention
The additional notes of a little embodiments.
Fig. 1 is nitrogen adsorption/desorption isotherm figure of the made high-quality bigger serface carbon materials of embodiment 1-4；
Fig. 2 is nitrogen adsorption/desorption isotherm figure of the made high-quality carbon materials of embodiment 2,5-7；
Fig. 3 is cyclic voltammetric when the made high-quality carbon material of embodiment 2 is used as electrode material for super capacitor
Figure；
Fig. 4 is charge and discharge electrograph when the made high-quality carbon material of embodiment 2 is used as electrode material for super capacitor；
Fig. 5 be the made high-quality carbon material of embodiment 2 be used as electrode material for super capacitor when in 5A/g electric currents
Cyclical stability figure under density；
Fig. 6 be the made high-quality carbon materials of embodiment 1-7 be used as electrode material for super capacitor when
0.2-10A/g specific capacitance figure.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the invention, and
The embodiment being not all of.Based on the embodiment in the present invention, those of ordinary skill in the art are not making
Go out the every other embodiment obtained under the premise of creative work, belong to the scope of protection of the invention.
Embodiment 1
(1) step：Coal is crushed and screened, drying and processing is then carried out.Weigh 3g raw coal and 9g hydrogen-oxygens
Change potassium, which is put into multifunctional mixer, to be sufficiently mixed 3 minutes, is put into after taking-up in porcelain boat.Porcelain boat is put into
In the middle part of tube furnace, 500 DEG C, activation are warming up to 0.5 DEG C/min heating rate under nitrogen atmosphere protection
Handle 36h.Porcelain boat is taken out after cooling, with watery hydrochloric acid and deionized water cyclic washing suction filtration, until filtrate
Untill pH value is neutrality.Filtered product is put into 80 DEG C of baking ovens dry 36h and obtains coal base high quality carbon
The carbon material of material product, i.e. bigger serface, is named as AC3T800t2.
(2) specific surface area of AC3T800t2 high-quality carbon material is 1498m2/ g, it makees electrode material in electricity
When current density is 0.2A/g, specific capacitance is 202F/g, in 10A/g, and specific capacitance is 114F/g.
Embodiment 2
(1) step：Coal is crushed and screened, drying and processing is then carried out.Weigh 3g raw coal and 12g hydrogen-oxygens
Change potassium, which is put into multifunctional mixer, to be sufficiently mixed 3 minutes, is put into after taking-up in porcelain boat.Porcelain boat is put into
In the middle part of tube furnace, 800 DEG C, at activation are warming up to 5 DEG C/min heating rate under nitrogen atmosphere protection
Manage 2h.Porcelain boat is taken out after cooling, with watery hydrochloric acid and deionized water cyclic washing suction filtration, until the pH of filtrate
Untill being worth for neutrality.Filtered product is put into 110 DEG C of baking ovens dry 12h and obtains coal base high-quality carbon materials
Expect product, be named as AC4T800t2.
(2) specific surface area of AC4T800t2 high-quality carbon material is 2457m2/ g, it makees electrode material in electricity
When current density is 0.2A/g, specific capacitance is 264F/g, in 10A/g, and specific capacitance is 167F/g.
Embodiment 3
(1) step：Coal is crushed and screened, drying and processing is then carried out.Weigh 3g raw coal and 15g hydrogen-oxygens
Change potassium, which is put into multifunctional mixer, to be sufficiently mixed 3 minutes, is put into after taking-up in porcelain boat.Porcelain boat is put into
In the middle part of tube furnace, 900 DEG C, activation are warming up to 30 DEG C/min heating rate under nitrogen atmosphere protection
Handle 2h.Porcelain boat is taken out after cooling, with watery hydrochloric acid and deionized water cyclic washing suction filtration, until filtrate
Untill pH value is neutrality.Filtered product is put into 150 DEG C of baking ovens dry 0.5h and obtains coal base high-quality
Carbon material product, is named as AC5T800t2.
(2) specific surface area of AC5T800t2 high-quality carbon material is 1259m2/ g, it makees electrode material in electricity
When current density is 0.2A/g, specific capacitance is 140F/g, in 10A/g, and specific capacitance is 87F/g.
Embodiment 4
(1) step：Coal is crushed and screened, drying and processing is then carried out.Weigh 3g raw coal and 18g hydrogen-oxygens
Change potassium, which is put into multifunctional mixer, to be sufficiently mixed 3 minutes, is put into after taking-up in porcelain boat.Porcelain boat is put into
In the middle part of tube furnace, 700 DEG C, activation are warming up to 20 DEG C/min heating rate under nitrogen atmosphere protection
Handle 12h.Porcelain boat is taken out after cooling, with watery hydrochloric acid and deionized water cyclic washing suction filtration, until filtrate
Untill pH value is neutrality.Filtered product is put into 120 DEG C of baking ovens dry 10h and obtains coal base high-quality
Carbon material product, is named as AC6T800t2.
(2) specific surface area of AC6T800t2 high-quality carbon material is 740m2/ g, it makees electrode material in electric current
When density is 0.2A/g, specific capacitance is 98F/g, in 10A/g, and specific capacitance is 54F/g.
Embodiment 5
(1) step：Coal is crushed and screened, drying and processing is then carried out.Weigh 3g raw coal and 12g hydrogen-oxygens
Change potassium, which is put into multifunctional mixer, to be sufficiently mixed 3 minutes, is put into after taking-up in porcelain boat.Porcelain boat is put into
In the middle part of tube furnace, 600 DEG C are warming up to 15 DEG C/min heating rate under the atmosphere protection of argon gas, is lived
Change processing 10 hours.Porcelain boat is taken out after cooling, with watery hydrochloric acid and deionized water cyclic washing suction filtration, until
Untill the pH value of filtrate is neutrality.Filtered product is put into 90 DEG C of baking ovens dry 15h and obtains coal base
High quality carbon material product, is named as AC4T800t1.
(2) specific surface area of AC4T800t1 high-quality carbon material is 1921m2/ g, it makees electrode material in electricity
When current density is 0.2A/g, specific capacitance is 241F/g, in 10A/g, and specific capacitance is 128F/g.
Embodiment 6
(1) step：Coal is crushed and is sized to certain particle diameter, drying and processing is then carried out.Weigh 3g former
Coal and 12g potassium hydroxide, which are put into multifunctional mixer, to be sufficiently mixed 3 minutes, is put into after taking-up in porcelain boat.
Porcelain boat is put into the middle part of tube furnace, is warming up under nitrogen atmosphere protection with 5 DEG C/min heating rate
800 DEG C, activation process 2.5h.Porcelain boat is taken out after cooling, with watery hydrochloric acid and deionized water cyclic washing suction filtration,
Untill the pH value of filtrate is neutrality.Filtered product is put into 110 DEG C of baking ovens into dry 12h to obtain
To coal base high quality carbon material product, AC8T800t2.5 is named as.
(2) specific surface area of AC4T800t2.5 high-quality carbon material is 2184m2/ g, it is made electrode material and existed
When current density is 0.2A/g, specific capacitance is 256F/g, in 10A/g, and specific capacitance is 143F/g.
Embodiment 7
(1) step：Coal is crushed and screened, drying and processing is then carried out.Weigh 3g raw coal and 12g hydrogen-oxygens
Change potassium, which is put into multifunctional mixer, to be sufficiently mixed 3 minutes, is put into after taking-up in porcelain boat.Porcelain boat is put into
In the middle part of tube furnace, 800 DEG C, at activation are warming up to 5 DEG C/min heating rate under nitrogen atmosphere protection
Manage 3h.Porcelain boat is taken out after cooling, with watery hydrochloric acid and deionized water cyclic washing suction filtration, until the pH of filtrate
Untill being worth for neutrality.Filtered product is put into 110 DEG C of baking ovens dry 12h and obtains coal base high-quality carbon materials
Expect product, be named as AC4T800t3.
(2) specific surface area of AC4T800t3 high-quality carbon material is 1850m2/ g, it makees electrode material in electricity
When current density is 0.2A/g, specific capacitance is 219F/g, in 10A/g, and specific capacitance is 121F/g.
The raw coal used in embodiment 1-7 is high-order coal, and potassium hydroxide can be solid or liquid, when
Potassium hydroxide is that its molar concentration is 0.1-10.01M, when in use, potassium hydroxide and raw coal for liquid
Mass ratio be 1-7.
The molar concentration of the watery hydrochloric acid used in embodiment 1-7 is 0.1-10.01M.
Application examples 1
The present invention is determined using the specific surface area and pore-size distribution analyzer NOVA1000e of Kang Ta companies of the U.S.
Nitrogen adsorption/desorption isotherm of coal base high-quality carbon material prepared by embodiment 1-7, refers to Fig. 1,2.From
Fig. 1,2 as can be seen that adsorption isotherm be mainly I type curves, illustrate material mainly based on micropore.
When relative pressure is 0.4-0.6, there is the small stagnant ring that returns to produce, illustrate that material contains necessarily simultaneously in
Hole.AC4T800t2 nitrogen adsorption capacity is maximum, is 2457m mainly due to its specific surface area maximum2/g。
Application examples 2
AC4T800T2 circulation Fuan curve, constant current charge-discharge curve and stability is tested at normal temperatures,
As a result Fig. 3, Fig. 4, Fig. 5 are seen respectively.
As shown in figure 3, the unique rectangle of CV curves illustrates that it has preferable double layer capacitor performance.
Fig. 4 triangular symmetrical charging and discharging curve is except illustrating that this material has good discharge and recharge invertibity
Outside, also illustrate that its resistance is smaller.
Fig. 5 have recorded AC4T800t2 in 5Ag-1The data that Shi Xunhuan 5000 is enclosed.In charge and discharge cycles 5000
After secondary, specific capacitance remains in that 95%.
Application examples 3
High-quality carbon material constant current charge-discharge curve prepared by testing example 1-7 is distinguished at normal temperatures, then
Compare their specific capacitance, as a result as shown in Figure 6.
From fig. 6, it can be seen that AC4T800t2 specific capacitance is maximum, the ratio of maximum is possessed mainly due to it
Surface area.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or use
The present invention.A variety of modifications to these embodiments will be aobvious and easy for those skilled in the art
See, generic principles defined herein can without departing from the spirit or scope of the present invention,
Realize in other embodiments.Therefore, the present invention is not intended to be limited to the embodiments shown herein,
And it is to fit to the most wide scope consistent with features of novelty with principles disclosed herein.
Claims (9)
1. a kind of bigger serface carbon material and preparation method thereof, it is characterised in that：Using raw coal as raw material,
Potassium hydroxide is the processing upgrading and modification that activator carries out multistage technology, and bigger serface carbon material is made,
The specific surface area of carbon material adds 950 times than raw coal, and the specific surface area of the carbon material can reach 2500
m2/g；
The high-quality carbon material of preparation is used for super capacitance electrode material, when current density is 0.2A/g, than
Electric capacity is 264F/g, and when current density is 1A/g, specific capacitance is 198F/g, and the carbon material material exists
The stability of the specific capacitance of charge and discharge cycles 5000 times is more than 95% under conditions of 5A/g；
The method for preparing bigger serface carbon material comprises the following steps：
(1) crush：Using raw coal as raw material, crush and screen, then carry out drying and processing；
(2) mix：Raw coal particle after will be broken is put into multifunctional crusher with potassium hydroxide fully to be stirred
Mix well mixed, obtain mixed product；
(3) activate：The mix products that step (2) is obtained are placed in tube furnace, under the protection of atmosphere,
Heated up with the heating rate of setting, be warming up to 500-950 DEG C of activation temperature, soak time is that 0.5-36 is small
When；
(4) wash：The product watery hydrochloric acid and deionized water washing and filtering that step (3) is obtained, repeatedly
Cyclic washing to pH value is neutrality, suction filtration；
(5) dry：The product that step (4) is obtained is dried in an oven, obtains coal base high-quality carbon material
Product.
2. bigger serface carbon material according to claim 1 and preparation method thereof, it is characterised in that：
Raw coal described in step (1) is high-order coal or low-order coal.
3. bigger serface carbon material according to claim 1 and preparation method thereof, it is characterised in that：
Potassium hydroxide described in step (2) is activator, and the potassium hydroxide is solid or solution, works as institute
When stating potassium hydroxide for solution, molar concentration is 0.1-10.01M, quality and the original of the potassium hydroxide
The mass ratio of coal is 1-7.
4. bigger serface carbon material according to claim 1 and preparation method thereof, it is characterised in that：
Heating rate is 0.5-30 DEG C/min in step (3).
5. bigger serface carbon material according to claim 1 and preparation method thereof, it is characterised in that：
The molar concentration of watery hydrochloric acid described in step (4) is 0.1-10.01M.
6. bigger serface carbon material according to claim 1 and preparation method thereof, it is characterised in that：
The temperature that product is dried in an oven in step (5) is 80-150 DEG C, and drying time is 0.5-36 hours.
7. bigger serface carbon material according to claim 1 and preparation method thereof, it is characterised in that
Atmosphere in step (3) is nitrogen or argon gas.
8. bigger serface carbon material according to claim 1 and preparation method thereof, it is characterised in that：
The specific surface area of the carbon material is 700-2500m2/g。
9. bigger serface carbon material according to claim 1 and preparation method thereof, it is characterised in that：
The high-quality carbon material of preparation is used for super capacitance electrode material, when current density is 0.2A/g, specific capacitance
For 264F/g, when current density is 1A/g, specific capacitance is 198F/g, and the carbon material material is in 5A/g
Under conditions of the stability of specific capacitance of charge and discharge cycles 5000 times be more than 95%.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109553098A (en) * | 2018-09-04 | 2019-04-02 | 四川大学 | A kind of method and application preparing the foramen magnum-mesoporous carbon of high-specific surface area using salt template |
| CN113307267A (en) * | 2021-06-24 | 2021-08-27 | 中国矿业大学 | Preparation method of coal-based porous carbon |
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|---|---|---|---|---|
| CN101092239A (en) * | 2007-06-25 | 2007-12-26 | 高凤仙 | Method for preparing super active carbon based on hickory with coal being adulterated |
| CN102689901A (en) * | 2012-05-23 | 2012-09-26 | 中国科学院山西煤炭化学研究所 | Method for fast drying high specific surface area activated carbon |
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2016
- 2016-03-29 CN CN201610190460.4A patent/CN107244670A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101092239A (en) * | 2007-06-25 | 2007-12-26 | 高凤仙 | Method for preparing super active carbon based on hickory with coal being adulterated |
| CN102689901A (en) * | 2012-05-23 | 2012-09-26 | 中国科学院山西煤炭化学研究所 | Method for fast drying high specific surface area activated carbon |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109553098A (en) * | 2018-09-04 | 2019-04-02 | 四川大学 | A kind of method and application preparing the foramen magnum-mesoporous carbon of high-specific surface area using salt template |
| CN113307267A (en) * | 2021-06-24 | 2021-08-27 | 中国矿业大学 | Preparation method of coal-based porous carbon |
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