CN109941994A - A kind of method and its supercapacitor preparing active carbon based on bean curd of fermented - Google Patents
A kind of method and its supercapacitor preparing active carbon based on bean curd of fermented Download PDFInfo
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- CN109941994A CN109941994A CN201910161840.9A CN201910161840A CN109941994A CN 109941994 A CN109941994 A CN 109941994A CN 201910161840 A CN201910161840 A CN 201910161840A CN 109941994 A CN109941994 A CN 109941994A
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- bean curd
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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
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Abstract
The invention discloses a kind of methods and its supercapacitor that active carbon is prepared based on bean curd of fermented, comprising the following steps: step S1 prepares bean curd of fermented material；Bean curd of fermented material is converted absorbent charcoal material by step S2.Using technical solution of the present invention, activated carbon electrodes are prepared using bean curd of fermented, the nanostructure of villus increases its surface area, improve the contact surface of electrolyte and electrode, constitute electron shuttle space, be conducive to the electric charge transfer of electrochemical reaction, thus, bean curd of fermented absorbent charcoal material can show outstanding chemical property.
Description
Technical field
The present invention relates to material technology neighborhoods, particularly a kind of to prepare the method for active carbon based on bean curd of fermented and its surpass
Grade capacitor.
Background technique
Supercapacitor is the Green Chemistry energy being concerned in recent years, due to the power density of its superelevation, long period
Stability, it is at low cost, safety is good the advantages that, make in some applications for needing the pulse power or short charging time as power supply
With can show fabulous chemical property.Electrode material is the key factor for determining super capacitor performance, wherein reporting most
To be widely porous carbon material, mainly have: porous carbon materials, activated carbon fiber, carbon aerosol and carbon nanotube etc..No
With material all there are respective advantage and disadvantage, if porous carbon materials have great specific surface area and high circulation service life, but it is put
Capacitance is lower.
Cellulose, hemicellulose and lignin rich in biomass cellulose and biopolymer, at high temperature
It can be converted into carbon material, be a kind of ideal carbon materials material precursor.Currently, by banana skin, leaf, peanut shell, coffee grounds etc.
Biomass is carbonized, and the active carbon therefrom extracted is utilized as the electrode material of supercapacitor.
Summary of the invention
Existing many materials, which require addition binder, can just be prepared into electrode, but increase the impedance of electrode, drop
Low electric conductivity, causes the high rate performance of its supercapacitor and cycle performance bad.In view of the drawbacks of the prior art, of the invention
It proposes a kind of method and its supercapacitor for preparing active carbon based on bean curd of fermented, material is prepared using two-step method, it first will be general
Logical bean curd makes its surface grow villus through everfermentation；Bean curd of fermented and its villus are transformed into active carbon again, so as to provide one
Kind prepares the new method of electrode, does not need addition binder during the preparation process, is applied in supercapacitor.
In order to solve technical solution of the existing technology, active carbon is prepared based on bean curd of fermented the invention discloses a kind of
Method, comprising the following steps:
Step S1 prepares bean curd of fermented material；
Bean curd of fermented material and its villus are transformed into absorbent charcoal material by step S2；
Wherein, the step S1 is further included steps of
Bean curd: being placed in filtered bean curd water 3~5 hours of immersion by S10, then pick up lay flat in wooden frame,
One layer of fine salt is sprinkled on bean curd, is placed in a cool and dry place, through everfermentation, taking-up obtains the bean curd of fermented of one layer of villus；
S11: bean curd of fermented upper surface and the villus grown are cut off together with pocket knife, obtain bean curd of fermented sheeting.
The step S2 is further included steps of
S20: bean curd of fermented sheeting is placed in freeze drier, true with 24 hours by 6~10 hours freeze
It is taken out after sky is dry, obtains pretreated bean curd of fermented material；
S21: pretreated bean curd of fermented being placed on potsherd, is placed in tube furnace, in argon atmosphere environmental protection
Under, it is warming up to Temperature fall after 600 DEG C~1200 DEG C calcinings 1~6 hour, finished activated Carbon Materials can be obtained.
As a preferred technical solution, in step slo, fermentation time is 3~4 days.
As a preferred technical solution, in step s 11, the bean curd of fermented upper surface cut off and villus are about 1cm.
As a preferred technical solution, in step S20, temperature is kept for -55 DEG C~-65 DEG C when freeze-drying.
As a preferred technical solution, in the step s 21, it under argon atmosphere protection, is heated to the rate of 5 DEG C/min
800 DEG C and holding 2 hours.
The invention also discloses a kind of supercapacitor, the electrode material of the supercapacitor uses the green soy bean of claim
Rotten absorbent charcoal material.
Compared with the existing technology, beneficial effects of the present invention are as follows:
(2) bean curd of fermented used in is environmentally friendly, cheap and easy preparation.
(3) activated carbon electrodes are prepared using bean curd of fermented, equipment requirement is lower in whole preparation process, and condition is simple, is convenient for
Production, and after carbonizing addition binder can not be needed directly as electrode.
(4) activated carbon electrodes are prepared using bean curd of fermented, the nanostructure of villus increases its surface area, improves electrolyte
With the contact surface of electrode, electron shuttle space is constituted, the electric charge transfer of electrochemical reaction is conducive to, thus, bean curd of fermented active carbon
Material can show outstanding chemical property.
Detailed description of the invention
Fig. 1 is the process schematic representation of the invention that active carbon is prepared based on bean curd of fermented.
Fig. 2 is the charging and discharging curve of (1A/g, 2A/g, 5A/g, 10A/g) electrode under the different current densities of the present invention.
Fig. 3 is the specific capacity of the present invention (1A/g, 2A/g, 5A/g) electrode under three kinds of different current densities.
Fig. 4 is the present invention (5mV s under different scanning rates-1,10mV s-1) electrode cyclic voltammogram.
Fig. 5 is the cycle performance figure of material of the invention under 2A/g charging or discharging current.
Following specific embodiment will further illustrate the present invention in conjunction with above-mentioned attached drawing.
Specific embodiment
In order to more preferably illustrate process and scheme of the invention, following invention is carried out in conjunction with the accompanying drawings and embodiments further
Explanation.The specific embodiments described herein are merely illustrative of the present invention, is not intended to limit the present invention.
The present invention provides a kind of method based on bean curd of fermented preparation supercapacitor active carbon, comprising the following steps:
Step S1 prepares bean curd of fermented material；
Bean curd of fermented material and its villus are transformed into absorbent charcoal material by step S2；
Wherein, the step S1 is further included steps of
Bean curd: being placed in filtered bean curd water 3~5 hours of immersion by S10, then pick up lay flat in wooden frame,
One layer of fine salt is sprinkled on bean curd, is placed in a cool and dry place, is fermented 3~4 days, taking-up obtains the bean curd of fermented of one layer of villus；
S11: bean curd of fermented upper surface and the villus grown are cut off together with pocket knife, the bean curd of fermented for obtaining about 1cm is thin
Sheet material.
The step S2 is further included steps of
S20: bean curd of fermented sheeting is placed in freeze drier, -55 DEG C~-60 DEG C at a temperature of, by 6~10
It is taken out after the freezing and vacuum drying in 24 hours of hour, obtains pretreated bean curd of fermented material；
S21: pretreated bean curd of fermented being placed on potsherd, is placed in tube furnace, in argon atmosphere environmental protection
Under, finished activated Carbon Materials can be obtained in Temperature fall after being warming up to 800 DEG C of calcinings 2 hours with 5 DEG C/min.
In above-mentioned technical proposal, first passing through Freeze Drying Technique keeps bean curd of fermented form constant, but removes original moisture；Again
Active carbon is made by high temperature carbonization.
Instantiation 1
Bean curd is placed in 5 hours of immersion in filtered bean curd water, picks up and lays flat with wooden frame, one is sprinkled on bean curd
Layer fine salt is placed in a cool and dry place, is fermented 5-6 days, and taking-up obtains the bean curd of fermented of one layer of villus.Then hair is cut off with pocket knife
The good bean curd of fermented upper surface of ferment and its villus, obtain the bean curd of fermented sheeting of about 1cm.Bean curd of fermented sheeting is placed on again
In freeze drier, -55 DEG C~-60 DEG C at a temperature of, taken out after freezing in 6 hours and vacuum drying in 24 hours,
Obtain pretreated bean curd of fermented material.Finally pretreated bean curd of fermented is placed on potsherd, is placed in tube furnace,
Under argon atmosphere environmental protection, finished activated charcoal is can be obtained in Temperature fall after being warming up to 600 DEG C of calcinings 2 hours with 5 DEG C/min
Material.
Instantiation 2
Bean curd is placed in 3 hours of immersion in filtered bean curd water, picks up and lays flat with wooden frame, one is sprinkled on bean curd
Layer fine salt is placed in a cool and dry place, is fermented 5-6 days, and taking-up obtains the bean curd of fermented of one layer of villus.Then hair is cut off with pocket knife
The good bean curd of fermented upper surface of ferment and its villus, obtain the bean curd of fermented sheeting of about 1.5cm.Bean curd of fermented sheeting is put again
In freeze drier, -55 DEG C~-60 DEG C at a temperature of, taken after freezing in 6 hours and vacuum drying in 24 hours
Out, pretreated bean curd of fermented material is obtained.Finally pretreated bean curd of fermented is placed on potsherd, is placed in tube furnace
In, under argon atmosphere environmental protection, finished product is can be obtained in Temperature fall after being warming up to 800 DEG C of calcinings 2 hours with 3 DEG C/min
Absorbent charcoal material.
Instantiation 3
Bean curd is placed in 3 hours of immersion in filtered bean curd water, picks up and lays flat with wooden frame, one is sprinkled on bean curd
Layer fine salt is placed in a cool and dry place, is fermented 3-4 days, and taking-up obtains the bean curd of fermented of one layer of villus.Then hair is cut off with pocket knife
The good bean curd of fermented upper surface of ferment and its villus, obtain the bean curd of fermented sheeting of about 1cm.Bean curd of fermented sheeting is placed on again
In freeze drier, -60 DEG C~-65 DEG C at a temperature of, taken out after freezing in 8 hours and vacuum drying in 24 hours,
Obtain pretreated bean curd of fermented material.Finally pretreated bean curd of fermented is placed on potsherd, is placed in tube furnace,
Under argon atmosphere environmental protection, finished activated charcoal is can be obtained in Temperature fall after being warming up to 800 DEG C of calcinings 2 hours with 5 DEG C/min
Material.
Instantiation 4
Bean curd is placed in 3 hours of immersion in filtered bean curd water, picks up and lays flat with wooden frame, one is sprinkled on bean curd
Layer fine salt is placed in a cool and dry place, is fermented 4-5 days, and taking-up obtains the bean curd of fermented of one layer of villus.Then hair is cut off with pocket knife
The good bean curd of fermented upper surface of ferment and its villus, obtain the bean curd of fermented sheeting of about 1cm.Bean curd of fermented sheeting is placed on again
In freeze drier, -55 DEG C~-60 DEG C at a temperature of, taken out after freezing in 8 hours and vacuum drying in 24 hours,
Obtain pretreated bean curd of fermented material.Finally pretreated bean curd of fermented is placed on potsherd, is placed in tube furnace,
Under argon atmosphere environmental protection, finished activated charcoal is can be obtained in Temperature fall after being warming up to 800 DEG C of calcinings 2 hours with 3 DEG C/min
Material.
It is about 0.5cm that above-mentioned resulting absorbent charcoal material, which is cut into area,2The pellet electrode of size, as electrode assembling
It is tested at supercapacitor.
Specific assembling process is as follows: assembling supercapacitor using CR2032 Coin-shaped battery.Two of them electrode is system
Standby activated carbon electrodes, TF4030 cellulosic separator is as diaphragm, and the KOH solution of 6mol/L is as electrolyte.In charge and discharge electrical measurement
In test system, charge-discharge test voltage is 0V~1V.
Fig. 2 be electrode prepared by the material under different current densities (1A/g, 2A/g, 5A/g, 10A/g) charge and discharge
Curve.These triangle charging and discharging curves show under different current densities, the electrode can show good symmetry and
Linearly, further the electrode material has ideal capacitive property.
Fig. 3 be electrode prepared by the material under different current densities (1A/g, 2A/g, 5A/g, 10A/g) specific volume
Amount, the specific capacity under 1A/g current density is 36F/g, and when current density is lower, specific capacity is larger, better performances.
Fig. 4 is (the 5mV s under different scanning rates of electrode prepared by the material-1,10mV s-1) cyclic voltammogram.
It can be seen from the figure that the CV curve of the electrode shows good " rectangle " feature, the current-responsive of non-oxidation reduction peak, pole
Change it is small, illustrate the electrode have good invertibity.
Fig. 5 is cycle performance figure of the electrode prepared by the material at 2A/g, as we can see from the figure 1000 circulations
Its preceding capacity gradually increases, and after 1000 circulations, although its capacity is gradually reduced, its capacity is higher than initial capacity, it was demonstrated that should
Material has good cycle performance.
The above description of the embodiment is only used to help understand the method for the present invention and its core ideas.It should be pointed out that pair
For those skilled in the art, without departing from the principle of the present invention, the present invention can also be carried out
Some improvements and modifications, these improvements and modifications also fall within the scope of protection of the claims of the present invention.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (5)
1. a kind of method for preparing active carbon based on bean curd of fermented, which comprises the following steps:
Step S1 prepares bean curd of fermented material；
Bean curd of fermented material and its villus are transformed into absorbent charcoal material by step S2；
Wherein, the step S1 is further included steps of
Bean curd: being placed in filtered bean curd water 3~5 hours of immersion by S10, then pick up lay flat in wooden frame, in bean curd
On sprinkle one layer of fine salt, place in a cool and dry place, through everfermentation, taking-up obtains the bean curd of fermented of one layer of villus；
S11: bean curd of fermented upper surface and the villus grown are cut off together, obtain bean curd of fermented sheeting；
The step S2 is further included steps of
S20: bean curd of fermented sheeting is placed in freeze drier, dry by freezing in 6~10 hours and 24 hours vacuum
It is taken out after dry, obtains pretreated bean curd of fermented material；
S21: pretreated bean curd of fermented being placed on potsherd, is placed in tube furnace, under argon atmosphere environmental protection, is risen
Temperature fall after temperature is calcined 1~6 hour to 600 DEG C~1200 DEG C, obtains absorbent charcoal material.
2. the method according to claim 1 for preparing active carbon based on bean curd of fermented, which is characterized in that in step slo, hair
The ferment time is 3-4 days.
3. the method according to claim 1 for preparing active carbon based on bean curd of fermented, which is characterized in that in step s 11,
In step S20, temperature is kept for -55 DEG C~-65 DEG C when freeze-drying.
4. the method according to claim 1 for preparing active carbon based on bean curd of fermented, which is characterized in that in the step s 21,
Under argon atmosphere protection, 800 DEG C are heated to 2 DEG C/min~5 DEG C/min rate and is kept for 2 hours.
5. a kind of supercapacitor, which is characterized in that the electrode material of the supercapacitor uses bean curd of fermented absorbent charcoal material, institute
Bean curd of fermented absorbent charcoal material is stated to be prepared using any method of Claims 1-4.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112938967A (en) * | 2021-05-07 | 2021-06-11 | 桂林电子科技大学 | Fermented bean curd-based porous carbon material and preparation method and application thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103641113A (en) * | 2013-11-11 | 2014-03-19 | 中南大学 | Preparation method of biomass-based formed activated carbon |
| CN104585351A (en) * | 2015-01-15 | 2015-05-06 | 黄山紫霞茶业有限公司 | Preparation method of mao bean curd |
| CN105845934A (en) * | 2016-05-12 | 2016-08-10 | 陕西科技大学 | Method for preparing porous tubular negative electrode carbon material of sodium ion battery by taking plant hair as raw material |
| CN106629708A (en) * | 2016-09-19 | 2017-05-10 | 北京化工大学 | Preparation method for waste edible-mushroom culture medium formed active carbon |
| CN106914265A (en) * | 2017-03-06 | 2017-07-04 | 南京师范大学 | A kind of method for preparing N doping porous nano carbon material as carbon source gel method with biomass |
| CN109160514A (en) * | 2018-09-21 | 2019-01-08 | 四川理工学院 | A kind of bean curd expanding method and the classifying porous active carbon of preparation method and bean curd of soybean flour and preparation method thereof |
-
2019
- 2019-03-04 CN CN201910161840.9A patent/CN109941994A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103641113A (en) * | 2013-11-11 | 2014-03-19 | 中南大学 | Preparation method of biomass-based formed activated carbon |
| CN104585351A (en) * | 2015-01-15 | 2015-05-06 | 黄山紫霞茶业有限公司 | Preparation method of mao bean curd |
| CN105845934A (en) * | 2016-05-12 | 2016-08-10 | 陕西科技大学 | Method for preparing porous tubular negative electrode carbon material of sodium ion battery by taking plant hair as raw material |
| CN106629708A (en) * | 2016-09-19 | 2017-05-10 | 北京化工大学 | Preparation method for waste edible-mushroom culture medium formed active carbon |
| CN106914265A (en) * | 2017-03-06 | 2017-07-04 | 南京师范大学 | A kind of method for preparing N doping porous nano carbon material as carbon source gel method with biomass |
| CN109160514A (en) * | 2018-09-21 | 2019-01-08 | 四川理工学院 | A kind of bean curd expanding method and the classifying porous active carbon of preparation method and bean curd of soybean flour and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112938967A (en) * | 2021-05-07 | 2021-06-11 | 桂林电子科技大学 | Fermented bean curd-based porous carbon material and preparation method and application thereof |
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Application publication date: 20190628 |