CN106830223A - A kind of activated carbon electrodes and its preparation method and application - Google Patents
A kind of activated carbon electrodes and its preparation method and application Download PDFInfo
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- CN106830223A CN106830223A CN201710035762.9A CN201710035762A CN106830223A CN 106830223 A CN106830223 A CN 106830223A CN 201710035762 A CN201710035762 A CN 201710035762A CN 106830223 A CN106830223 A CN 106830223A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4691—Capacitive deionisation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
Abstract
The invention discloses a kind of activated carbon electrodes and its preparation method and application, according to the raw material of weight portion by 90 parts of the activated carbon 30 part of the mesh number of 20 mesh 300,40 parts of conductive agent 5 part, 50 parts of clay 5 part, can be carbonized 80 parts of organic binder bond 5 part and 30 parts of deionized water 5 part is constituted.Including：Activated carbon, conductive agent are well mixed with clay, then the organic binder bond that can be carbonized is added to be well mixed and prepares slurry with deionized water；Active material slurry is coated uniformly on electrode base material, 0.5h 3h are dried at being placed in 60 DEG C 160 DEG C；The electrode of preliminarily dried is placed in vacuumize or nitrogen protection atmosphere furnace in, at 500 DEG C 1000 DEG C calcine 0.5h 3h, that is, obtain coated battery lead plate.Present invention improves the electric conductivity and water resistance of activated carbon electrodes, there is high practical value in electric capacity desalination；The electric conductivity and water resistance of activated carbon electrodes can be significantly improved.
Description
Technical field
The invention belongs to electrochemical technology field, more particularly to a kind of activated carbon electrodes and its preparation method and application.
Background technology
The preparation and application of activated carbon electrodes are the core technologies in electric capacity desalination, and dynamical activated carbon electrodes should have
The features such as big specific surface area, abundant intermediary hole and high conductivity.It is typically long-term that activated carbon electrodes are applied to electric capacity desalination
Be immersed in salting liquid, therefore must also have good water resistance, ensure that long-term use and activated carbon not from collector
On come off.Further, since activated carbon granule has resistance higher in itself, its answering in electrochemical capacitor desalination is limited
With.Therefore, for electrochemical capacitor desalination application active carbon electrode preparation, it should put forth effort improve activated carbon granule coating
And technology for preparing electrode, to improve the electrical conductivity and water resistance of activated carbon electrodes.At present, the conventional bonding of activated carbon electrodes is prepared
Agent includes organic binder bond and inorganic binder.Organic binder bond has polytetrafluoroethylene (PTFE), segregation tetrafluoroethene, epoxy resin, phenol
Urea formaldehyde and modified starch etc..But, the micropore and intermediary hole of activated carbon granule can be blocked using organic binder bond so that activity
The hole utilization rate of charcoal declines, so as to reduce the desalting efficiency of activated carbon electrodes；Organic binder bond can also make activated carbon electrodes
Internal resistance increases, and reduces the electric energy efficiency of electrode；The amount of activated carbon granule coating is generally milli when especially, using organic binder bond
Gram rank, load capacity is too low and do not reach much using the actually used standard of electrode.It is organic during slurry agitation is prepared
Binding agent can be entered into the micropore of activated carbon granule, and then after solidification, micropore is blocked to be caused to be utilized；Absolutely mostly
Several organic binder bonds can not be conductive, and resistance is very big, and the internal resistance of motor can be increased naturally；Using organic binder cemented
During activated carbon granule, the gap between activated carbon granule and particle is larger, and a small amount of organic binder bond can not make its good knot
Close, and increasing organic binder bond can be such that the performance of activated carbon granule declines rapidly, and also activated carbon bulky grain is easy to from surface
Split away off.Inorganic binder has sodium, KP1, alukalin, clay etc..Inorganic binder typically has larger electricity
Resistance, can increase the internal resistance of activated carbon electrodes, hence it is evident that reduce the electro-chemical activity of electrode；Meanwhile, inorganic binder is difficult activity
Charcoal particle and the good bonding of collector substrate；Inorganic binder can not penetrate into carbon paper or carbon cloth surfaces, after chance water again easily
Decomposition is dissolved in water, causes to bond well.And organic binder bond has good wellability with carbon paper or carbon cloth, water resistance
Far better than inorganic binder, it is possible to bond activated carbon granule and collector well.And, inorganic binder water resistance
Very poor, causing activated carbon to meet water can occur the severe detachment from substrate.
In sum, the defect that the binding agent that activated carbon electrodes use has poorly conductive and poor water resistance is prepared at present.
The content of the invention
It is an object of the invention to provide a kind of activated carbon electrodes and its preparation method and application, it is intended to solve to prepare at present
There is poorly conductive and poor water resistance in the binding agent that activated carbon electrodes are used.
The present invention is achieved in that a kind of activated carbon electrodes, and the activated carbon electrodes are according to the raw material of weight portion by 20
30 parts -90 parts of the activated carbon of the mesh number of mesh -300,5 parts -40 parts of conductive agent, 5 parts -50 parts of clay, 5 parts of the organic binder bond that can be carbonized -
80 parts and 5 parts of -30 parts of compositions of deionized water.
Further, the conductive agent is：One or more in acetylene black, graphite powder, CNT, carbon fiber.
Further, the clay is one or more in alukalin, diatomite, medical stone, Woelm Alumina.
Further, the organic binder bond that is carbonized is for modified starch, polytetrafluoroethylene (PTFE), segregation tetrafluoroethene, asphalt mixtures modified by epoxy resin
One or more in fat, phenolic resin.
Another object of the present invention is to provide a kind of preparation method of the activated carbon electrodes, the activated carbon electrodes
Preparation method is comprised the following steps：
Step one, activated carbon, conductive agent are well mixed with clay, then the organic binder bond that can be carbonized adds with deionized water
Enter to be well mixed and prepare slurry；
Step 2, active material slurry is coated uniformly on electrode base material, and 0.5h- is dried at being placed in 60 DEG C -160 DEG C
3h；
Step 3, the electrode of preliminarily dried is placed in vacuumize or nitrogen protection atmosphere furnace in, 500 DEG C -1000 DEG C
Lower calcining 0.5h-3h, that is, obtain coated battery lead plate.
Further, the electrode base material is：Carbon paper or carbon cloth.
Another object of the present invention is to provide a kind of electric capacity demineralizer prepared by the activated carbon electrodes.
Activated carbon electrodes and its preparation method and application that the present invention is provided, improve the electric conductivity of activated carbon electrodes with it is resistance to
Aqueous, the activated carbon electrodes of preparation have high practical value in electric capacity desalination.Activated carbon electrodes of the invention are applied to
In CDI desalination technologies, by 500ppm TDS enter water as a example by, its energy consumption is only 1/5th of RO technologies.With the equipment of 5 terms
Life-span calculates, and every annual operating cost of a set of 6 ton hour treating capacity equipment is about 20000 U.S. dollars, than same scale RO technologies
Operating cost is low by more than 50%.The present invention can significantly improve activity while ensureing that activated carbon electrodes have high capacity amount
The electric conductivity and water resistance of carbon resistance rod, the activated carbon electrodes of preparation have excellent performance in electrochemical desalting；In electrical conductivity
It is 2000 μ Scm-1Sodium chloride solution, the wherein specific capacity of electric capacity desalination can reach 14.6mgg-1.It is viscous using mixing
Knot agent, is obviously improved by the conductance of the activated carbon electrodes after high temperature cabonization, increased the utilization rate of electric current；Organic adhesive is not
Activated carbon bulky grain can be well bonded, but can be activated carbon granule is gathered well with collector；Activated carbon granule it
Between still there is good caking property, this also demonstrates mentioned above from another point of view, and inorganic binder can not glue well
Knot activated carbon granule and collector, but can make that there is good adhesive property between activated carbon bulky grain.
The method that the present invention is be combined with each other using inorganic binder and organic binder bond, ensure that activated carbon granule coating
While amount so that activated carbon electrodes have good electric conductivity, and activated carbon granule is combined stabilization with electrode base material, with very
Good water resistance, further increases activated carbon electrodes chemical property, greatly reduces electrode manufacture in actual applications
Cost；Contain a certain proportion of organic binder bond that is carbonized in filler, the high-temperature calcination under vacuum or nitrogen protection not only may be used
To open the intermediary hole of more active particles, and organic binder bond can be made to be carbonized.Organic binder bond after carbonization has good
Good electric conductivity, and cause that activated carbon granule is tightly combined together with electrode base material, so that whole electrode has
Good electric conductivity；Contain a certain proportion of inorganic binder in filler so that what is combined between activated carbon granule is very not tight
It is close so that the porosity of electrode surface is suitably distributed, so that salting liquid can preferably enter electrode surface, improve work
The utilization rate of property charcoal particle, in contrast test, the amount of tri- kinds of electrode activity charcoals of A, B, C is the same, and the desalination effect of A electrodes
It is well more many than two kinds of electrodes of B, C, just illustrate that the utilization rate of the activated carbon granule of A electrodes is higher than B, C electrode；Further carry
The chemical property of activated carbon electrodes high.And the ratio of the inorganic binder of addition can be adjusted adjust activated carbon electrodes
The hole on surface.Mercury pressuring data figure in contrast test can be seen that pore-size distribution of the A electrodes at 45nm will be apparently higher than
B, C electrode, and the mainly micropore played a role in electric capacity desalination, and A electrode conductivities will be far better than B, C electrode, electricity
Sub- transmission speed is fast, and the desalting efficiency that result in A electrodes is better than B, C electrode.Pore-size distribution at 100 microns should be activated carbon
Grain between hole, it can be found that A electrodes than B, C electrode even pore distribution and rationally, this is more beneficial for the uniform of liquid
Distribution, increases the utilization rate of electronics and micropore.
Method of the present invention equipment is simple, simple to operate, and all processes can realize automation, can with Simplified flowsheet,
Improve time and efficiency prepared by electrode.
Brief description of the drawings
Fig. 1 is the preparation method flow chart of activated carbon electrodes provided in an embodiment of the present invention.
Fig. 2 is the electrode prepared of embodiment provided in an embodiment of the present invention 1 and embodiment 2 in 2000 μ Scm-1Chlorine
Change the desalination performance schematic diagram in sodium solution.
Fig. 3 be three kinds of electrodes provided in an embodiment of the present invention in 0.5M NaCl solutions, sweep speed for 1mV/s circulation lie prostrate
Peace schematic diagram.
Fig. 4 is that three kinds of electrodes provided in an embodiment of the present invention illustrate intention in 0.5M NaCl solutions middle impedance.
Fig. 5 is that electrical conductivity changes over time curve synoptic diagram in NaCl solution provided in an embodiment of the present invention.
Fig. 6 is three kinds of electrodes provided in an embodiment of the present invention electric desalination cycle performance schematic diagram in sodium chloride solution.
Fig. 7 is the mercury pressuring data figure of A, B, C electrode provided in an embodiment of the present invention.
Fig. 8 is the Bet datagrams of A, B, C electrode provided in an embodiment of the present invention.
Fig. 9 is that A, B, C electrode provided in an embodiment of the present invention soaks one month in NaCl solution respectively.
Figure 10 is the resistance sizes at A, B, C electrode surface 1,2,3,4cm provided in an embodiment of the present invention.
Figure 11 is A, B, C electrode buckling strength contrast provided in an embodiment of the present invention.
Figure 12 is cross section and the surface SEM figures of A, B, C electrode provided in an embodiment of the present invention.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
Application principle of the invention is explained in detail below in conjunction with the accompanying drawings.
Activated carbon electrodes provided in an embodiment of the present invention according to weight portion raw material by the mesh number of 20 mesh -300 activated carbon 30
Parts -90 parts, 5 parts -40 parts of conductive agent, 5 parts -50 parts of clay, can be carbonized 5 part -30 of 5 parts -80 parts of organic binder bond and deionized water
Part composition.
As shown in figure 1, the preparation method of activated carbon electrodes provided in an embodiment of the present invention is comprised the following steps：
S101：Activated carbon, conductive agent are well mixed with clay, then the organic binder bond that can be carbonized is added with deionized water
It is well mixed to prepare slurry；
S102：Active material slurry is coated uniformly on electrode base material, 0.5h-3h is dried at being placed in 60 DEG C -160 DEG C；
S103：The electrode of preliminarily dried is placed in vacuumize or nitrogen protection atmosphere furnace in, at 500 DEG C -1000 DEG C
Calcining 0.5h-3h, that is, obtain coated battery lead plate.
The electrode base material is：Carbon paper, carbon cloth.
The conductive agent is：One or more in acetylene black, graphite powder, CNT, carbon fiber etc..
The clay is：One or more in alukalin, diatomite, medical stone, Woelm Alumina etc..
The organic binder bond that is carbonized is：Modified starch, polytetrafluoroethylene (PTFE), segregation tetrafluoroethene, epoxy resin, phenolic aldehyde
One or more in resin etc..
Application principle of the invention is further described with reference to specific embodiment.
Embodiment 1：
A kind of activated carbon electrodes with satisfactory electrical conductivity Yu water resistance, include according to the raw material of weight portion：20-300 mesh
Several 80 parts of activated carbon, 5 parts of conductive agent, 5 parts of clay, 5 parts of the organic binder bond that can be carbonized, 5 parts of deionized waters.
A kind of method prepared by activated carbon electrodes, comprises the following steps that：
Step one, activated carbon, conductive agent are well mixed with clay, then the organic binder bond that can be carbonized adds with deionized water
Enter to be well mixed and prepare slurry.
Step 2, active material slurry is coated uniformly on electrode base material, is dried 1 hour at being placed in 100 DEG C.
Step 3, the electrode of preliminarily dried is placed in vacuumize or nitrogen protection atmosphere furnace in, calcine 3 at 600 DEG C
Hour, obtain coated battery lead plate.
Embodiment 2：
A kind of activated carbon electrodes with satisfactory electrical conductivity Yu water resistance, include according to the raw material of weight portion：20-300 mesh
Several 60 parts of activated carbon, 10 parts of conductive agent, 5 parts of clay, 20 parts of the organic binder bond that can be carbonized, 5 parts of deionized waters.
A kind of method prepared by activated carbon electrodes, comprises the following steps that：
Step one, activated carbon, conductive agent are well mixed with clay, then the organic binder bond that can be carbonized adds with deionized water
Enter to be well mixed and prepare slurry.
Step 2, active material slurry is coated uniformly on electrode base material, is dried 0.5 hour at being placed in 150 DEG C.
Step 3, the electrode of preliminarily dried is placed in vacuumize or nitrogen protection atmosphere furnace in, calcine 2 at 900 DEG C
Hour, obtain coated battery lead plate.
Apply the voltage of 1.5V respectively at the activated carbon electrodes two ends prepared using embodiment 1 and embodiment 2, during absorption
Between be 60 minutes, the electrode regeneration time be 30 minutes, then proceed to circulate this process.It can be seen that both are electric
Pole all has good electro adsorption capacity, and by after the Electro Sorb process of 1 hour, the electrical conductivity of sodium chloride solution is from 2000 μ S
cm-11300 μ Scm are reduced to respectively-1With 1000 μ Scm-1Left and right, according to formula it can be calculated that being prepared using embodiment 1
Go out the electric desalination amount of electrode for 10mg/g, and it is 14.5mg/g to use the electric desalination amount that embodiment 2 prepares electrode.The present invention is adopted
With cheap raw material, simple and efficient technique has prepared the activated carbon electrodes with desalination performance high, by this activated carbon
Application of electrode will substantially reduce the cost for the treatment of sewage in aspects such as sewage disposal, desalinization, industrial water softenings, have
Huge commercial value.
Application effect of the invention is explained in detail with reference to contrast test.
Contrast test uses hybrid adhesive, organic binder bond and inorganic binder respectively, using identical preparation technology, system
It is standby gone out three kinds of different activated carbon electrodes.These three electrodes are respectively designated as A electrodes, B electrodes and C electrodes.
Buckling strength first to three kinds of electrodes is compared, and the electrode that discovery is prepared using hybrid adhesive has
Buckling strength well, can bend 360 ° and activated carbon granule does not come off from graphite paper surface；Using the electricity of organic binder bond
When pole is bent to 270 °, the activated carbon granule on graphite paper surface is started shedding off；And using the electrode of inorganic binder, it is somewhat curved
Folding, activated carbon granule meeting slabbing is broken and is dropped from graphite paper surface, this also illustrates inorganic binder can not be combined very well
Activated carbon granule and graphite paper base plate.In order to further verify the superiority of the activated carbon electrodes prepared using hybrid adhesive,
Electrochemical analysis also has been carried out to these three electrodes.It can be found that redox does not occur in curve from cyclic voltammetric Fig. 3
Peak, it is possible to draw in the not electron exchange of generating material and the transfer, the only suction of ion of this three pairs of electrode surfaces
Invest desorption, i.e. electric capacity all from Coulomb interactions electric double layer and non-faraday electric capacity.Can also be observed that, A electricity
The cyclic voltammetry curve area of pole is greater than B electrodes and C electrodes, it can be deduced that the capacitance of A electrodes is bigger.On this basis,
Also analyze the impedance of these three electrodes.It can also be seen that A electrodes have smaller electrochemical impedance, explanation from impedance diagram 4
Electronics will be faster than B electrodes and C electrodes in the transmission speed of A electrode surfaces, and this has critically important meaning in electric desalination aspect of performance
Justice.
In order to further verify A electrode desalination performances, as shown in figure 5, being 2000 μ Scm in electrical conductivity-1Sodium chloride it is molten
In liquid, electro-adsorption demineralization test has been carried out.Three kinds of voltages at electrode two ends are all 1.5V, and the Electro Sorb time is 120 minutes.Can be with
It was found that A electrodes are at the absorption initial stage, the electrical conductivity decline of sodium chloride solution is substantially faster with C electrodes than B electrode, and 100
Minute when, B electrodes and the adsorption saturation of C electrodes, A electrodes can also continue to absorption.Carried out using A electrode pairs sodium chloride solution
After desalination, electrical conductivity drops to 850 μ Scm-1, this will be well below B electrodes and the final electrical conductivity of C electrodes.This demonstrate, A
Electrode specific surface area is larger, and pore-size distribution is rationally, and the ion channel of mass efficient is formed in electrode interior, is ensureing ion
While being smoothly through, the amount of the absorption of ion is also increased, so as to greatly improve the electric desalination performance of electrode.
In order to simulate actual electric desalting process, as shown in fig. 6, three kinds of electrodes have been carried out into electricity respectively except salt cycle process
Test.Salting liquid is that electrical conductivity is 2000 μ Scm-1Sodium chloride solution, the voltage at electrode two ends is 1.5V, electric desalination absorption
Time be 60 minutes, time of electrode regeneration is 30 minutes.It can be seen that in electric desalination adsorption process, A electrodes
Performance will be far superior to other two kinds of electrodes, and during electrode regeneration, ion release rate is also than other two kinds of electrodes
Hurry up.The desalting process of B electrodes and the poor-performing of electrode regeneration process, because organic binder bond blocks up the hole of activated carbon
Plug, causes the performance of desalination to be greatly reduced.C electrodes can be observed substantially, and during electrode regeneration, ion can not be complete
Discharge, because the use of inorganic binder, plugs effective passage of ion, cause the absorption of ion and release simultaneously
Obstruction is received, and during release, some ions can not be discharged, and the pore plugging of activated carbon is caused
Desalination performance further declines.
As shown in fig. 7, in contrast test, the amount of tri- kinds of electrode activity charcoals of A, B, C is the same, and the desalination of A electrodes is imitated
Fruit is well more many than two kinds of electrodes of B, C, just illustrates that the utilization rate of the activated carbon granule of A electrodes is higher than B, C electrode；Further
Improve the chemical property of activated carbon electrodes.And it is electric to adjust activated carbon to adjust the ratio of the inorganic binder of addition
The hole on pole surface.It is substantially high that mercury pressuring data figure in contrast test can be seen that pore-size distribution of the A electrodes at 45nm
In B, C electrode, and played a role in electric capacity desalination mainly micropore, and A electrode conductivities will far better than B, C electrode,
Electric transmission speed is fast, and the desalting efficiency that result in A electrodes is better than B, C electrode.Pore-size distribution at 100 microns should be activated carbon
Hole between particle, it can be found that A electrodes than B, C electrode even pore distribution and rationally, this is more beneficial for the equal of liquid
Even distribution, increases the utilization rate of electronics and micropore.
Can be drawn from the cross section SEM figures of A, B, C electrode, using inorganic binder C electrode activity charcoal particles with
Collection liquid surface has very big hole, does not bond well；And A, B electrode activity charcoal particle are contacted very well with collector,
With good caking property.From the surface SEM figures of each electrode as can be seen that the distribution of pores of A electrode surfaces is more uniform, this has
Beneficial to being uniformly distributed and electric transmission for liquid, so that its electric desalination performance enhancement.
As shown in figure 8, the Bet datagrams of A, B, C electrode, on the basis of mercury pressuring data, and to the work on A, B, C electrode
The micropore of property charcoal is measured, i.e. Bet data.From the graph, it is apparent that the micropore master of the activated carbon on three kinds of electrodes
1.5nm or so is distributed in, and the micropore quantity of A electrodes will be far longer than two kinds of electrodes of B, C, it is main in electric capacity desalting process
Play suction-operated is micropore, it will thus be seen that the electric capacity desalination performance of A electrodes will be much better than B, C electrode, from reality
Electric capacity desalting process also demonstrates this point.
As shown in figure 9, A, B, C electrode respectively in the NaCl solution after immersion one month electrode surface change, in order to test
Card prepares the water resistance of electrode, and tri- kinds of electrodes of A, B, C are separately immersed in the change that electrode surface is observed month in NaCl solution
Change situation.As can be seen from the figure after one month soaks, electrode surface does not have significant change to A electrodes, illustrates that it has
Good water resistance and mechanical strength；And B electrode surfaces have substantial amounts of activated carbon granule to come off, but activated carbon and collector it
Between still have good adhesive property, this also demonstrates theory set forth above, and organic adhesive can not well bond activated carbon
Bulky grain, but can be activated carbon granule is gathered well with collector；The activated carbon slabbing of C electrode surfaces is from collector
Surface comes off, but still has good caking property between activated carbon granule, and this also demonstrates mentioned above from another point of view
, inorganic binder can not well bond activated carbon granule and collector, but can make to have between activated carbon bulky grain good
Good adhesive property.
As shown in Figure 10, the resistance sizes at A, B, C electrode surface 1,2,3,4cm, it can be seen that A electrodes
Resistance will be far smaller than the resistance of B, C electrode, and the resistance of three kinds of electrode surfaces is not linearly to increase with the increase of distance
Plus, because the resistance of collector wants the resistance of specific activity charcoal particle small, electric current can be from positive source by activated carbon
Layer flows through from collector and reaches power cathode, and the resistance of actual measurement is the resistance of active carbon layer, so the electricity of electrode surface
Resistance size is only relevant with internal structure with the thickness of active carbon layer.So as to also demonstrate, using hybrid adhesive, by pyrocarbon
The conductance of the activated carbon electrodes after change is obviously improved, and increased the utilization rate of electric current.
As shown in figure 11, A, B, C electrode buckling strength contrast.
As shown in figure 12, the cross section of A, B, C electrode and surface SEM scheme.
In sum, by being used in mixed way inorganic binder and organic binder bond so that activated carbon granule and afflux
Body, activated carbon granule and activated carbon granule have good cementation, it is ensured that the mechanical strength of activated carbon electrodes and bonding
Intensity.After high-temperature calcination so that electrode interior is more fluffy, specific surface area increase, and cause pore-size distribution rationally,
The ion channel of mass efficient is formed in electrode interior, it is ensured that ion is moved smoothly through, so as to greatly improve activated carbon
The desalination performance of electrode.Also, the raw material that the present invention is used are cheap and easy to get, and processing technology is simple and efficient, with can be applied to
The great potential of actual production, with huge commercial value.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (7)
1. a kind of activated carbon electrodes, it is characterised in that the activated carbon electrodes are according to the raw material of weight portion by the mesh number of 20 mesh -300
30 parts -90 parts of activated carbon, 5 parts -40 parts of conductive agent, 5 parts -50 parts of clay, can be carbonized 5 parts -80 parts of organic binder bond and go from
5 parts of -30 parts of compositions of sub- water.
2. activated carbon electrodes as claimed in claim 1, it is characterised in that the conductive agent is：Acetylene black, graphite powder, carbon are received
One or more in mitron, carbon fiber.
3. activated carbon electrodes as claimed in claim 1, it is characterised in that the clay is alukalin, diatomite, wheat meal
One or more in stone, Woelm Alumina.
4. activated carbon electrodes as claimed in claim 1, it is characterised in that it is described be carbonized organic binder bond for modified starch,
One or more in polytetrafluoroethylene (PTFE), segregation tetrafluoroethene, epoxy resin, phenolic resin.
5. a kind of preparation method of activated carbon electrodes as claimed in claim 1, it is characterised in that the preparation of the activated carbon electrodes
Method is comprised the following steps：
Step one, activated carbon, conductive agent are well mixed with clay, then the organic binder bond that can be carbonized is added with deionized water and mixed
Conjunction uniformly prepares slurry；
Step 2, active material slurry is coated uniformly on electrode base material, and 0.5h-3h is dried at being placed in 60 DEG C -160 DEG C；
Step 3, the electrode of preliminarily dried is placed in vacuumize or nitrogen protection atmosphere furnace in, forged at 500 DEG C -1000 DEG C
0.5h-3h is burnt, that is, obtains coated battery lead plate.
6. the preparation method of activated carbon electrodes as claimed in claim 5, it is characterised in that the electrode base material is：Carbon paper or
Carbon cloth.
7. it is a kind of as described in claim 1 activated carbon electrodes prepare electric capacity demineralizer.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109607694A (en) * | 2018-12-27 | 2019-04-12 | 陕西麦可罗生物科技有限公司 | A kind of kasugarnycin raw medicine workshop condensed water recycling device and method |
| CN111285575A (en) * | 2019-04-13 | 2020-06-16 | 广州益禄丰生态环保科技有限责任公司 | Method and equipment for repairing urban tidal river black and odorous bottom mud by using microbial fuel cell |
| CN111825171A (en) * | 2020-06-12 | 2020-10-27 | 武汉尚源新能环境有限公司 | Preparation method of mesoporous carbon electrode and organic wastewater treatment equipment |
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| CN111825171A (en) * | 2020-06-12 | 2020-10-27 | 武汉尚源新能环境有限公司 | Preparation method of mesoporous carbon electrode and organic wastewater treatment equipment |
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