CN105244178A - Super capacitor and preparation method thereof - Google Patents
Super capacitor and preparation method thereof Download PDFInfo
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- CN105244178A CN105244178A CN201510713000.0A CN201510713000A CN105244178A CN 105244178 A CN105244178 A CN 105244178A CN 201510713000 A CN201510713000 A CN 201510713000A CN 105244178 A CN105244178 A CN 105244178A
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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
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- 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 preparation method of a super capacitor. The preparation method comprises the following steps: 1) preparing activated carbon by utilizing overdue starch fermented food, wherein the step 1) comprises the step 101) carrying out carbonization treatment, the step 102) carrying out grinding to obtain carbon powders, the step103) adding alkaline activators, the step 104) carrying out high-temperature drying and activation, the step 105) carrying out acid washing and water washing to remove the alkali in the carbon powders, and the step 106) carrying out drying; 2) preparing active substance electrode sheets of the super capacitor by utilizing the prepared activated carbon; and 3) constructing the super capacitor. The beneficial effects are that the overdue starch fermented food is utilized to prepare the activated carbon material which has high specific surface area and high adsorption performance, and the material is utilized as the electrode sheets to construct the super capacitor; the prepared super capacitor is quick in charging/discharging speed, large in capacitance and good in circulation charging/discharging performance; the preparation method provides an environmentally-friendly and economical processing method for the overdue starch fermented food; and the method and the prepared super capacitor have significant practical value and a wide application prospect.
Description
Technical field
The present invention relates to supercapacitor technologies field, utilize expired starchiness fermented food to prepare electrode plates and ultracapacitor in particular to one.
Background technology
At present, the energy and environmental problem become increasingly conspicuous, and the mankind pay much attention to the research of energy storage technology research and resource circulation utilization technology.Ultracapacitor is as a kind of novel energy-storing device, have that power density is high, charge/discharge rates be fast, have extended cycle life, the series of advantages such as operating temperature range is wide, safety non-pollution, having broad application prospects in mobile communication, electric automobile, Aero-Space and science and techniques of defence etc., is the study hotspot in current international energy storage field.Electrode material is one of key factor affecting ultracapacitor main performance.Material for ultracapacitor mainly contains porous carbon materials, metal oxide and conducting polymer three major types.Carbon-based material is the most widely used electrode material of current super capacitor, mainly comprises porous carbon microsphere, carbon gels, carbon nano-tube, carbon fiber, active carbon etc.Wherein active carbon because of abundant raw material source, energy storage cost performance is high and become optimal electrode material for super capacitor in practical application.Shell, coal, petroleum coke, phenolic resins, pitch etc. all can be used as raw material, adopt physically activated (with H
2o and CO
2be activator Deng oxidizing gas) or chemical activation (with KOH, H
3pO
4, ZnCl
2be activator Deng chemical reagent) technique can prepare active carbon.
People often with starchiness fermented food for staple food, as steamed bun, bread etc., but this kind of food belongs to instant food, and the shelf-life is shorter.Supermarket, bakery have some to the shelf-life but the food such as unsold steamed bun, bread every day, for a city, need this kind of expired food enormous amount of undercarriage process every day.Understand by inquiry, mainly containing three kinds: one to expired starchiness fermented food processing mode is at present that this processing mode exists the possibility of contaminated environment directly when rubbish is thrown away; Two is that unified recovery re-uses special incierator for environment protection and burn, but cost is higher and there is the garbage disposal problem after burning; Three is be used as feed with lower price after being pulverized by producer to sell plant, but the subsidiary germ of expired food may cause cultivated animals ill.All there is waste or improper in these processing methods above, can recycle it.
Starch (C in starchiness fermented food
6h
10o
5) n is rich in carbon, and food is many in abundant cavernous structure.Using this kind of expired food as carbon raw material, its abundant pore structure can be utilized, there is through the preparation of the method such as carbonization, activation the active carbon of stronger adsorption capacity, and for making the electrode material of ultracapacitor.Like this, a large amount of expired starchiness fermented food of manufacturer and supermarket surplus can be recycled, be prepared into active carbon by economy, easily technique, for building ultracapacitor, both can cut the waste and environmental pollution, and can turn waste into wealth again, economize on resources.
Summary of the invention
For solving the problem, the object of the present invention is to provide a kind of ultracapacitor utilizing expired starchiness fermented food to prepare.
The invention provides a kind of preparation method of ultracapacitor, the method comprises:
Step 1, utilizes expired starchiness fermented food to prepare active carbon, specifically comprises:
Step 101, carbonization treatment:
Expired starchiness fermented food is placed in tube furnace, at the temperature of 450-550 degree, is incubated 1 hour, carries out high temperature cabonization, obtain material with carbon element;
Step 102, grinds to form carbon dust:
Material with carbon element after carbonization is ground to form carbon dust;
Step 103, adds alkali activator:
Alkali activator is mixed with the mass ratio of described carbon dust according to 0.5-4:1, and adds distilled water and make described alkali activator fully dissolve and stir;
Step 104, high temperature drying, activation:
The sample obtained in step 103 being put into drying oven heating makes it dry, sample after high temperature drying is placed in mortar grind careful, with being placed in the nickel boat that built up by metallic nickel, described nickel boat is put into described tube furnace, continues to pass into nitrogen, the air in described tube furnace is drained, persistently overheating to 750-850 degree, make material with carbon element form cavernous structure, keep temperature 1 hour, after being cooled to room temperature subsequently, take out sample;
Step 105, carries out pickling and washing, removes the alkali in carbon dust:
Suction filtration instrument is connected with vacuum pump, distilled water is added in the sample obtained in step 104, all pour in described suction filtration instrument after stirring, open described vacuum pump, continue at the uniform velocity to add watery hydrochloric acid 1000ml in described suction filtration instrument, when watery hydrochloric acid all adds and suction filtration is complete, continue at the uniform velocity to add distilled water 1000-1500ml in described suction filtration instrument, when water to be distilled is all complete by suction filtration, close described vacuum pump;
Step 106, dry:
Take out from filtrator the filter paper being attached with carbon dust, put into high temperature oven heat drying, the product obtained after drying is active carbon;
Step 2, utilizes the active carbon of preparation to prepare the active material electrode plates of ultracapacitor:
By active material, conductive carbon black and binding agent according to the quality of 85:10:5 than Homogeneous phase mixing in agate mortar, add the blend solution of second alcohol and water, after being mixed into pulp-like, be coated in 1*1cm uniformly
2the nickel foam surface of size, and dry in the drying box of 120 DEG C, with cold press by described nickel foam compacting, more again dry in 120 DEG C of drying boxes, namely obtain active material electrode plates;
Step 3, builds ultracapacitor:
By described material electrode pole piece, electrode gap is arranged in the electrolytic solution, obtain ultracapacitor.
Further improve as the present invention, described alkali activator is potassium hydroxide KOH.
Further improve as the present invention, the mass ratio 2:1 of step 103 neutral and alkali activator KOH and described carbon dust.
Further improve as the present invention, the specific area of the active carbon that step 1 obtains is 969-1850m
2/ g.
Further improve as the present invention, in step 2, described binding agent is polytetrafluoroethylene PTFE.
Further improve as the present invention, described to electrode employing Pt silk, described electrolyte adopts KOH solution.
Further improve as the present invention, the concentration of described KOH solution is 6mol/L.
Present invention also offers a kind of ultracapacitor, comprising:
Shell, is provided with electrolyte solution in it;
Fixed head, it is located on described shell, and described fixed head is provided with two circular holes, two circular hole symmetric arrays;
Material electrode pole piece, it is inserted in described shell by the first circular hole, and is fixed by described first circular hole and described fixed head;
To electrode, it is inserted in described shell by the second circular hole, and is fixed by described second circular hole and described fixed head.
Further improve as the present invention, described material electrode pole piece is the activated carbon electrodes utilizing expired starchiness fermented food to prepare, and described is Pt electrode to electrode.
Further improve as the present invention, when the current density of ultracapacitor is 200mA/g, ratio capacitance is 251F/g.
Beneficial effect of the present invention is:
1, utilize it's the shelf-life the pasting starchiness fermented food to make the absorbent charcoal material of high-specific surface area, high absorption property, and apply this material as electrode plates, successfully build ultracapacitor;
2, the ultracapacitor charge/discharge rates of preparation is fast, capacitance large, and cycle charge discharge electrical property is good, is the energy storage device of environmental protection;
3, for the recycling of expired starchiness fermented food proposes a kind of environmental protection, economic processing method, for the electrode material exploitation of ultracapacitor provides a kind of new approaches, there is important practical value and wide application prospect.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the preparation method of a kind of ultracapacitor described in the embodiment of the present invention;
Fig. 2 is the structure chart of a kind of ultracapacitor described in the embodiment of the present invention;
Fig. 3 is that the present invention tests the nitrogen adsorption-desorption curve figure obtained;
Fig. 4 is aperture, the inside regularity of distribution figure that the present invention tests the sample obtained;
Fig. 5 is that the present invention tests the constant current charge-discharge curve chart obtained;
Fig. 6 is that the present invention tests the cyclic voltammetry curve figure obtained;
Fig. 7 is the volume test figure of ultracapacitor of the present invention;
Fig. 8 is constant current charge-discharge 1000 specific capacity test data curve charts;
Fig. 9 is the typical plot of Fig. 8 constant current charge-discharge 1000 times.
In figure,
1, shell; 2, fixed head; 3, material electrode pole piece; 4, to electrode; 51, the first circular hole; 52, the second circular hole.
Embodiment
Also by reference to the accompanying drawings the present invention is described in further detail below by specific embodiment.
Embodiment 1, as shown in Figure 1, the preparation method of a kind of ultracapacitor described in first embodiment of the invention, the method comprises:
Step 1, utilizes expired starchiness fermented food to prepare active carbon, specifically comprises:
Step 101, carbonization treatment:
Expired steamed bun 200g is placed in tube furnace, and setting carburizing temperature 500 degree, is incubated 1 hour, carries out high temperature cabonization, obtain material with carbon element;
Step 102, grinds to form carbon dust:
Material with carbon element after carbonization is ground to form carbon dust;
Step 103, adds alkali activator:
Alkali activator KOH is mixed with the mass ratio of carbon dust according to 0.5:1, and adds 30ml distilled water and make alkali activator KOH fully dissolve and stir, the identified as samples obtained is designated as CK21;
Step 104, high temperature drying, activation:
The sample CK21 obtained in step 103 being put into drying oven heating makes it dry, sample after high temperature drying is placed in mortar grind careful, with being placed in the nickel boat that built up by metallic nickel, nickel boat is put into tube furnace, continues to pass into nitrogen, the air in tube furnace is drained, persistently overheating to 800 degree, make material with carbon element form cavernous structure, keep temperature 1 hour, after being cooled to room temperature subsequently, take out sample;
Step 105, carries out pickling and washing, removes the alkali in carbon dust:
Suction filtration instrument is connected with vacuum pump, distilled water is added in the sample obtained in step 104, all pour into after stirring in suction filtration instrument, open vacuum pump, continue at the uniform velocity to add watery hydrochloric acid 1000ml in suction filtration instrument, when watery hydrochloric acid all adds and suction filtration is complete, continue at the uniform velocity to add distilled water 1000-1500ml in suction filtration instrument, when water to be distilled is all complete by suction filtration, close vacuum pump;
Step 106, dry:
Take out from filtrator the filter paper being attached with carbon dust, put into high temperature oven heat drying, the product obtained after drying is active carbon;
Step 2, utilizes the active carbon of preparation to prepare the active material electrode plates of ultracapacitor:
By active material, conductive carbon black and polyfluortetraethylene of binding element PTFE according to the quality of 85:10:5 than Homogeneous phase mixing in agate mortar, add the blend solution of second alcohol and water, after being mixed into pulp-like, be coated in 1*1cm uniformly
2the nickel foam surface of size, and dry in the drying box of 120 DEG C, with cold press by nickel foam compacting, more again dry in 120 DEG C of drying boxes, namely obtain active material electrode plates;
Step 3, builds ultracapacitor:
By material electrode pole piece, electrode gap is arranged in the electrolytic solution, obtain ultracapacitor.
As shown in Figure 2, the ultracapacitor that prepared by this method comprises: shell 1, electrolyte solution, fixed head 2, material electrode pole piece 3 and to electrode 4.Wherein, electrolyte solution is provided with in shell 1; Fixed head 2 is located on shell 1, and fixed head 2 is provided with two circular holes, two circular hole symmetric arrays; Material electrode pole piece 3 is inserted in shell 1 by the first circular hole 51, and is fixed by the first circular hole 51 and fixed head 2; Electrode 4 is inserted in shell 1 by the second circular hole 52, and is fixed by the second circular hole 52 and fixed head 2.The activated carbon electrodes that material electrode pole piece 3 is prepared for utilizing expired starchiness fermented food is Pt electrode to electrode 4, and electrolyte adopts concentration to be the KOH solution of 6mol/L.
Embodiment 2, the place that the preparation method of ultracapacitor is different from embodiment 1 is, the mass ratio 1:1 of step 103 neutral and alkali activator KOH and carbon dust, the identified as samples obtained is designated as CK11.The structure of the ultracapacitor prepared is identical with embodiment 1, and difference is that the electrode material of material electrode pole piece 3 is prepared by sample CK11.
Embodiment 3, the place that the preparation method of ultracapacitor is different from embodiment 1 is, the mass ratio 2:1 of step 103 neutral and alkali activator KOH and carbon dust, the identified as samples obtained is designated as CK12.The structure of the ultracapacitor prepared is identical with embodiment 1, and difference is that the electrode material of material electrode pole piece 3 is prepared by sample CK12.
Embodiment 4, the place that the preparation method of ultracapacitor is different from embodiment 1 is, the mass ratio 4:1 of step 103 neutral and alkali activator KOH and carbon dust, the identified as samples obtained is designated as CK14.The structure of the ultracapacitor prepared is identical with embodiment 1, and difference is that the electrode material of material electrode pole piece 3 is prepared by sample CK14.
Tsing-Hua University's new carbon laboratory NOVA4000 high speed specific area and pore-size distribution tester is adopted to carry out active carbon nitrogen adsorption-desorption test.Nitrogen adsorption-the desorption curve of 4 kinds of samples as shown in Figure 3.
Adsorption and desorption curve type per sample can differentiate that the hole feature of sample is as follows:
(1) active carbon utilizing expired starchiness fermented food to prepare is mainly microcellular structure.
The adsorption curve of each sample is morphologically more similar, and overall in convex, adsorption curve leading portion sharply rises, and back segment tends towards stability.BET according to adsorption isotherm classifies, curve and I type adsorption isotherm close, sample belongs to poromerics.Due to the strong interaction between adsorbate and hole wall, under very low relative pressure, absorption starts, and adsorbance increases sharply.Due to absorption molecule between interaction, fill up completely hole need improve relative pressure, reach certain relative pressure (about P/P
0=0.3) time, adsorbance is tending towards a constant numerical value, namely occurs saturated phenomenon, and reach capacity absorption, and therefore this curve has one close to horizontal absorption platform.4 kinds of samples all present low-pressure area adsorbance greatly, along with the increase of pressure, and the feature that absorption increment is little.
The adsorption and desorption curve of sample overlaps substantially, and at relatively middle and high nip, adsorption and desorption curve does not slightly overlap, and desorption branch, on desorption branch, has faint desorption hysteresis.Actual adsorption configuration is similar to H4 type loop line in the criteria for classification of International Union of Pure and Applied Chemistry (IUPAC), and interpret sample forms primarily of micropore.
(2) activated carbon adsorptive capacity of alkali activator level ratio to preparation has certain influence.
According to Fig. 3, under same equal pressure, the adsorbance CK21<CK11<CK12<CK 14 of sample, illustrates that, along with alkali activator level increases, the adsorption capacity of its activated carbon sample prepared strengthens.But the difference of the adsorbance between adjacent two curves, reduce gradually, the adsorbance of CK12 and CK14 is close, illustrates that, when alkali activator level is increased to a certain degree, the increase of alkali activator level reduces gradually on the impact property improving activated carbon adsorptive capacity.
Using absorption relative pressure be 0.2 time adsorbance as pore volume, according to BET model, calculation sample specific area.Table 1 is the specific surface area data that in 4, sample calculates respectively.Can find out, activated carbon sample prepared by expired starchiness fermented food has very large specific area, on average about 1537m
2g
-1, CK14 sample specific area is maximum, reaches 1850m
2g
-1.
The surface area of table 14 kind of sample
According to table 1, alkali activator level increases, and the specific area of its activated carbon sample prepared increases gradually.This is due to the increase along with alkali concn, and the effect of activation is more obvious, and active carbon can be etched out more hole.But contrast CK12 and CK14 two groups of data can find, the consumption of carbon dust and alkali activator changes to 1:4 from 1:2, active carbon specific area is almost constant, after illustrating that alkali activator level acquires a certain degree, alkali activator level continues to increase, and the active carbon specific area of preparation increases DeGrain.
Fig. 4 is the 4 kinds of sample interior pore-size distribution rules calculated with DFT algorithm simulation.As can see from Figure 4, the distribution of sample well bulk density mainly contains two peaks, lays respectively at 1.1nm and 4nm, show that the hole in these two pore diameter ranges occupies important proportion, but aperture 1.1nm is compared with the pore volume of aperture 4nm, large more than 10 times.Illustrate that the activated carbon capillary of preparation is more flourishing, microporosity is high, but also has a certain amount of mesopore, and the ratio of mesopore is relatively low.The hydration K+ ion of KOH electrolyte system, the diameter of OH-ion that make ultracapacitor employing are all less than 0.4nm, and the pore size of sample is relatively applicable to the Ion transfer of inorganic electrolyte liquid system and generation Electrochemical adsorption.
Respectively by the ultracapacitor for preparing for electrode material with sample CK21, sample CK11, sample CK12, sample CK14 under the voltage conditions of the current density of 200mA/g ,-0.1V-0V, carry out constant current charge-discharge test, obtain constant current charge-discharge curve as shown in Figure 5.Can be obtained by Fig. 5, the constant current charge-discharge curve shape of 4 kinds of samples is similar, and charging curve, discharge curve are all close to straight line, illustrate that discharge and recharge time and voltage have obvious linear characteristic, (in formula, U is voltage to coincidence formula U=It/C, and I is electric current, and t is the time, C is electric capacity), charge and discharge process image is close to symmetrical isosceles triangle, and illustrate that they have good capacitance characteristic, charging and discharging currents efficiency is higher, therefore, 4 kinds of samples are all applicable to the electrode material doing ultracapacitor.
Fig. 6 be 4 kinds of samples sweep speed be 5mV/s, voltage range is cyclic voltammetry curve figure under-1 ~ 0V.As can be seen from the figure, the cyclic voltammetric CV curve of 4 kinds of samples is all close to rectangle, curve symmetry is good, indicate material sample and have good capacitance characteristic, redox peak is not had to occur, illustrate that electrode reaction is mainly electric double layer charge transfer reaction, almost not from the reaction of faraday's electro transfer, electric capacity is mainly based on electric double layer energy storage.
According to the constant current charge-discharge curve in Fig. 5, calculate the capacitance of the lower 4 kinds of samples of different current density respectively, result as shown in Figure 7.As seen from Figure 7, during current density <5Ah/g (under small area analysis), the specific capacity of ultracapacitor increases along with active carbon specific area and increases, CK14 specific area is maximum, specific capacity is the highest, the specific capacity of CK12 and CK14 is more or less the same, and the specific capacity of sample CK21 is minimum.In the process that electric current increases gradually, the specific capacity of 4 kinds of samples all presents downward trend, but the degree declined is different.Because when low current density, the charging interval is long, electrolyte ion has the sufficient time to enter in micropore, and then forms electric double layer.When current density increases, partial pore has been failed ion and has been entered within the short charging interval, and the utilance of micropore reduces, and thus ratio capacitance declines to some extent.As seen from Figure 7, along with current density strengthens, the specific capacity downward trend of CK21, CK11, CK12 is close, and the maximum CK14 of specific area declines at most, under big current, CK14 specific capacity is on the contrary lower than CK12, and this is mainly excessive due to alkali activator level, introduces a large amount of micropore in system, micropore has the energy storage capacity of stronger adion, but mesopore proportion is lower, be unfavorable for that ion spreads rapidly under big current, under causing big current, capacitive property declines.
The particular capacity data of table 24 kind of sample
Table 2 is the particular capacity data of 4 kinds of samples, can find out CK21 be no matter heavy-current discharge or low discharging current time, its capacity other several groups 2/1 to three/3rds between, and capability retention is minimum, poor-performing.CK11, CK12, CK14 tri-groups of data whole discrepancy are few.When small area analysis discharge and recharge, CK14 capacity is maximum, and CK12 takes second place, and CK11 is lower.When high current charge-discharge, CK12 capacity is maximum, and CK11 takes second place, and CK14 is lower.Comparatively speaking CK12 has higher capability retention, still can keep higher capacitance under big current, has outstanding high rate performance.Comparatively CK12 is slightly lower for the capability retention of CK11, and CK14 capability retention is more more than another two groups of differences.So from overall performance, CK12 best performance.
The CK12 sample choosing best performance carries out 1000 constant current charge-discharge tests.Fig. 8 is CK12 sample constant current charge-discharge 1000 specific capacity test data curves, as can be seen from experimental data, CK12 sample is after 1000 charge-discharge tests, still can keep the specific capacity of 95%, capacitance loss rate about 5%, illustrate that CK12 sample has higher capability retention, continuing discharge and recharge and use and can not have an immense impact on to its capacity, is the excellent material as ultracapacitor.
Fig. 9 is take CK12 as the typical curve of the ultracapacitor constant current charge-discharge that obtains of material 1000 times.As seen from the figure, whole cycle charge discharge electric process, curve maintains good symmetrical invertibity, and capacitor maintains stable high magnification and mass property all the time, this illustrates there is good cyclical stability as electrode of super capacitor by active carbon prepared by expired starchiness fermented food.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a preparation method for ultracapacitor, is characterized in that, the method comprises:
Step 1, utilizes expired starchiness fermented food to prepare active carbon, specifically comprises:
Step 101, carbonization treatment:
Expired starchiness fermented food is placed in tube furnace, at the temperature of 450-550 degree, is incubated 1 hour, carries out high temperature cabonization, obtain material with carbon element;
Step 102, grinds to form carbon dust:
Material with carbon element after carbonization is ground to form carbon dust;
Step 103, adds alkali activator:
Alkali activator is mixed with the mass ratio of described carbon dust according to 0.5-4:1, and adds distilled water and make described alkali activator fully dissolve and stir;
Step 104, high temperature drying, activation:
The sample obtained in step 103 being put into drying oven heating makes it dry, sample after high temperature drying is placed in mortar grind careful, with being placed in the nickel boat that built up by metallic nickel, described nickel boat is put into described tube furnace, continues to pass into nitrogen, the air in described tube furnace is drained, persistently overheating to 750-850 degree, make material with carbon element form cavernous structure, keep temperature 1 hour, after being cooled to room temperature subsequently, take out sample;
Step 105, carries out pickling and washing, removes the alkali in carbon dust:
Suction filtration instrument is connected with vacuum pump, distilled water is added in the sample obtained in step 104, all pour in described suction filtration instrument after stirring, open described vacuum pump, continue at the uniform velocity to add watery hydrochloric acid 1000ml in described suction filtration instrument, when watery hydrochloric acid all adds and suction filtration is complete, continue at the uniform velocity to add distilled water 1000-1500ml in described suction filtration instrument, when water to be distilled is all complete by suction filtration, close described vacuum pump;
Step 106, dry:
Take out from filtrator the filter paper being attached with carbon dust, put into high temperature oven heat drying, the product obtained after drying is active carbon;
Step 2, utilizes the active carbon of preparation to prepare the active material electrode plates of ultracapacitor:
By active material, conductive carbon black and binding agent according to the quality of 85:10:5 than Homogeneous phase mixing in agate mortar, add the blend solution of second alcohol and water, after being mixed into pulp-like, be coated in 1*1cm uniformly
2the nickel foam surface of size, and dry in the drying box of 120 DEG C, with cold press by described nickel foam compacting, more again dry in 120 DEG C of drying boxes, namely obtain active material electrode plates;
Step 3, builds ultracapacitor:
By described material electrode pole piece, in the electrolytic solution ultracapacitor is obtained to electrode gap setting.
2. preparation method according to claim 1, is characterized in that, described alkali activator is potassium hydroxide KOH.
3. preparation method according to claim 2, is characterized in that, the mass ratio 2:1 of step 103 neutral and alkali activator KOH and described carbon dust.
4. preparation method according to claim 1, is characterized in that, the specific area of the active carbon that step 1 obtains is 969-1850m
2/ g.
5. preparation method according to claim 1, is characterized in that, in step 2, described binding agent is polytetrafluoroethylene PTFE.
6. preparation method according to claim 1, is characterized in that, described to electrode employing Pt silk, described electrolyte adopts KOH solution.
7. preparation method according to claim 6, is characterized in that, the concentration of described KOH solution is 6mol/L.
8. according to a ultracapacitor prepared by the preparation method in claim 1-7 described in any one, it is characterized in that, comprising:
Shell (1), is provided with electrolyte solution in it;
Fixed head (2), it is located on described shell (1), and described fixed head (2) is provided with two circular holes, two circular hole symmetric arrays;
Material electrode pole piece (3), it is inserted in described shell (1) by the first circular hole (51), and is fixed by described first circular hole (51) and described fixed head (2);
To electrode (4), it is inserted in described shell (1) by the second circular hole (52), and is fixed by described second circular hole (52) and described fixed head (2).
9. ultracapacitor according to claim 8, is characterized in that, the activated carbon electrodes that described material electrode pole piece (3) is prepared for utilizing expired starchiness fermented food, and described is Pt electrode to electrode (4).
10. ultracapacitor according to claim 9, is characterized in that, when the current density of described ultracapacitor is 200mA/g, ratio capacitance is 251F/g.
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| CN105869920A (en) * | 2016-03-30 | 2016-08-17 | 扬州卡本碳能科技有限公司 | Preparation method of supercapacitor carbon material |
| CN106098407A (en) * | 2016-08-10 | 2016-11-09 | 华中农业大学 | A kind of method utilizing culture medium of edible fungus garbage to prepare ultracapacitor porous carbon electrode material |
| CN106115695A (en) * | 2016-06-26 | 2016-11-16 | 吴迪 | A kind of method utilizing durian shell to prepare height ratio capacity ultracapacitor |
| CN106430187A (en) * | 2016-09-20 | 2017-02-22 | 湖南南方搏云新材料股份有限公司 | Method of using uncured carbon felt leftover material for preparing supercapacitor electrode activated carbon |
| CN106558426A (en) * | 2016-11-21 | 2017-04-05 | 电子科技大学中山学院 | Edible super capacitor and preparation method thereof |
| CN107644742A (en) * | 2017-10-31 | 2018-01-30 | 合肥工业大学 | A kind of method that biogas residue activated carbon prepares ultracapacitor after dry fermentation based on biomass anaerobic |
| CN113044836A (en) * | 2021-02-03 | 2021-06-29 | 成都理工大学 | Preparation method of porous activated carbon and oil-water separation application thereof |
| WO2023109408A1 (en) * | 2021-12-17 | 2023-06-22 | 宁波中车新能源科技有限公司 | Electric double layer capacitor |
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| CN105869920A (en) * | 2016-03-30 | 2016-08-17 | 扬州卡本碳能科技有限公司 | Preparation method of supercapacitor carbon material |
| CN105869920B (en) * | 2016-03-30 | 2018-05-11 | 江苏欧力特能源科技有限公司 | A kind of preparation method of ultracapacitor carbon material |
| CN106115695A (en) * | 2016-06-26 | 2016-11-16 | 吴迪 | A kind of method utilizing durian shell to prepare height ratio capacity ultracapacitor |
| CN106098407A (en) * | 2016-08-10 | 2016-11-09 | 华中农业大学 | A kind of method utilizing culture medium of edible fungus garbage to prepare ultracapacitor porous carbon electrode material |
| CN106430187A (en) * | 2016-09-20 | 2017-02-22 | 湖南南方搏云新材料股份有限公司 | Method of using uncured carbon felt leftover material for preparing supercapacitor electrode activated carbon |
| CN106558426A (en) * | 2016-11-21 | 2017-04-05 | 电子科技大学中山学院 | Edible super capacitor and preparation method thereof |
| CN107644742A (en) * | 2017-10-31 | 2018-01-30 | 合肥工业大学 | A kind of method that biogas residue activated carbon prepares ultracapacitor after dry fermentation based on biomass anaerobic |
| CN113044836A (en) * | 2021-02-03 | 2021-06-29 | 成都理工大学 | Preparation method of porous activated carbon and oil-water separation application thereof |
| WO2023109408A1 (en) * | 2021-12-17 | 2023-06-22 | 宁波中车新能源科技有限公司 | Electric double layer capacitor |
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