CN104124069B - A kind of high-ratio surface functionalization absorbent charcoal material and electrode slurry preparation method thereof - Google Patents
A kind of high-ratio surface functionalization absorbent charcoal material and electrode slurry preparation method thereof Download PDFInfo
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Abstract
The present invention relates to a kind of high-ratio surface functionalization absorbent charcoal material and electrode slurry preparation method thereof, solve the problems such as active carbon with high specific surface area little, the difficulties in dispersion of material proportion, preparation process: (1) pickling；(2) surface processes；(3) load of oxygen metal compound；(4) high-temperature oxydation；(5) secondary load of oxygen metal compound；(6) prepared by slurry.The present invention is oxygen metal compound at absorbent charcoal material area load; improve the proportion of high-ratio surface functionalization absorbent charcoal material; obtain pore volume and the high-ratio surface functionalization absorbent charcoal material of aperture prosperity; easily adsorb electrolytic solution; effect of impregnation is obviously improved, and preparation technology is simple, be suitable for large-scale production.
Description
Technical field
The present invention relates to a kind of high specific surface functionalization absorbent charcoal material for super capacitance cell and electrode slurry preparation method thereof, belong to energy storage material technical field.
Background technology
Super capacitance cell is the energy storage device with electric double layer capacitance energy storage feature, active carbon with high specific surface area is that super capacitance cell uses widest electrode material, the high-specific surface area of absorbent charcoal material, the concentration difference polarization caused because of exoelectrical reaction can be reduced, improve the overall performance of battery, but absorbent charcoal material is little due to proportion when preparing slurry, under water-based system, difficulties in dispersion, thus affect the capacitive property of electrode material.
Summary of the invention
It is an object of the invention to the deficiency overcoming prior art to exist, it is provided that a kind of high-ratio surface functionalization absorbent charcoal material and electrode slurry preparation method thereof.
The present invention proposes a kind of high-ratio surface functionalization absorbent charcoal material and electrode slurry preparation method thereof, and active carbon with high specific surface area material carries out pickling, reduces the content of ashes of absorbent charcoal material, reduces the impurity metal content of activated carbon；Absorbent charcoal material after pickling is carried out high-temperature process, the functional group of modification activities carbon surface in the environment of oxidant exists；Use chemical coprecipitation method, under ionic dispersants effect, add inorganic additive, product is processed under high temperature inert gas；Product after high temperature inert gas being processed, carries out chemical coprecipitation reaction again, adds inorganic additive, it is thus achieved that high-ratio surface functionalization activated carbon, then enters dry；The preparation of slurry, disperses high-ratio surface functionalization activated carbon dispersant, forms homogeneous system, adds binding agent, vacuum stirring, proceeds to ball milling in ball mill, forms stable dispersion system, filters, obtains electrode slurry.
A kind of high-ratio surface functionalization absorbent charcoal material preparation method that the present invention proposes, specifically comprises the following steps that
(1) pickling
Weigh activated carbon and join in enamel reaction still, add deionized water, stir 25min～35min, be slowly added to the acid with oxidisability, solid-liquid weight ratio is 1:5～20, stir 2h～3h, reactant is cleaned in filter press repeatedly to filtrate be neutrality；
(2) surface processes
Product in step (1) is joined in the enamel reaction still with heater, add deionized water, add weak oxidant, stirring, heating up, heating rate is 5 DEG C/min～8 DEG C/min, and temperature controls between 90 DEG C～100 DEG C, after constant temperature stir 4h～6h, above-mentioned reactant is cleaned in filter press repeatedly to filtrate be neutrality；
(3) load of oxygen metal compound
Adding deionized water, oxygen metal compound, dispersant in enamel reaction still, stirring is to being completely dissolved；Product in step (2) is joined in above-mentioned enamel reaction still, stirs 0.5h～1.5h；Measure 25% strong aqua ammonia to be slowly added in above-mentioned enamel reaction still, after addition, stir 2.5h～3.5h, then remove water with centrifuge, the filter cake obtained, product is dried to moisture less than 5% under the conditions of 90 DEG C；
(4) high-temperature oxydation
Being put into by the desciccate that step (3) loads in the resistance furnace of inert gas shielding, heating rate is 15 DEG C/min, and thermostat temperature is 300 DEG C～350 DEG C, and the constant temperature oxidation response time is 2h～4h；
(5) secondary load of oxygen metal compound
Adding deionized water in enamel reaction still, add oxygen metal compound, dispersant, stirring is to being completely dissolved；Adding the product after step (4) processes, after stirring 1h～1.5h, weighing sodium sulfate and oxygen metal compound weight ratio is 2:3, is stirred for 2.5h～3h, removes moisture removal with filter press and to clean filter cake to filtrate be neutrality；Being dried by filter cake, baking temperature is 85 DEG C～90 DEG C, and drying time is 24h～26h, it is thus achieved that dry high-ratio surface functionalization activated carbon；
A kind of electrode slurry preparation method containing high-ratio surface functionalization absorbent charcoal material that the present invention proposes, also includes specifically comprising the following steps that
(6) prepared by slurry
Adding deionized water in vacuum stirring tank, be slowly added to binding agent, stirring 2h～3h is to being completely dissolved under vacuum, is configured to the binder solution of 0.5wt%, adds the dispersant of 5wt%, vacuum stirring 2h～3h, forms homogeneous system；The high-ratio surface functionalization activated carbon obtained in step (5) and conductive agent powder are added high speed mixer high speed mixing 2h～3h；In vacuum stirring tank, add the powder of mix homogeneously, stir 2h～3h, after being subsequently adding binding agent, high-speed stirred 1h～2h, proceed in ball mill after ball milling 2h～3h, it is thus achieved that active carbon with high specific surface area slurry.
In the present invention, the acid with oxidisability described in step (1) is any one in nitric acid, phosphoric acid or hydrochloric acid, and concentration is at 0.1mol/L～3mol/L.
In the present invention, the weak oxidant described in step (2) is any one in carbamide, carbon ammonium, ethylenediamine or hydrogen peroxide.
In the present invention, the oxygen metal compound described in step (3) is any one in nickel nitrate, zinc nitrate, zinc oxide or manganese dioxide, and load percentage is 3.5%～15%, and reaction system pH controls 7.5～9, and solid-to-liquid ratio is 1:5～20.
In the present invention, the dispersant described in step (3) is any one in cetyl trimethylammonium bromide, dodecyl sodium sulfate or polyvinyl alcohol.
In the present invention, the noble gas described in step (4) is any one in nitrogen or argon.
In the present invention, the oxygen metal compound described in step (5) is zinc nitrate and lead sulfate mixture or zinc nitrate and barium sulfate mixture.
In the present invention, the dispersant described in step (5) is any one in cetyl trimethylammonium bromide, PEG-4000 or Polyethylene Glycol-600.
In the present invention, the high-ratio surface functionalization activated carbon described in step (5) be specific surface be 1500m2/ g～1800m2/ g, proportion is 0.75g/cm2～0.9g/cm2, pore volume is 0.3cm3/ g～1cm3/ g, aperture is 3nm～8nm, and particle diameter is 32 μm～68 μm, and metallic compound content is 3%～15%.
In the present invention, slurry described in step (6) is made up of 35wt%～80wt% (weight) active carbon with high specific surface area, 3wt%～20wt% (weight) conductive agent, 0.1wt%～3wt% (weight) dispersant, 1wt%～5wt% (weight) binding agent and balance deionized water, and the viscosity of slurry controls at 2500mp.s～10000mp.s.
In the present invention, in step (6), conductive agent is any one or two kinds of in acetylene black, Graphene, electrically conductive graphite or carbon fiber.
In the present invention, in step (6), dispersant is any one in polyvinyl alcohol, PEG-4000, cetyl trimethylammonium bromide or dodecyl sodium sulfate.
In the present invention, in step (6), binding agent is any one or more in carboxymethyl cellulose, methylcellulose, hydroxypropyl methyl cellulose, hydroxyethyl cellulose, neoprene, politef or Vingon.
Beneficial effects of the present invention:
(1) in the present invention, pickling effect is to reduce absorbent charcoal material content of ashes, reduces foreign metal (ferrum, the copper etc.) ion concentration of absorbent charcoal material；
(2) upper metal ion is successfully loaded on the active carbon with high specific surface area material surface that prepared by the present invention, obtain the absorbent charcoal material that particle diameter is bigger, be concentrated mainly between 32 microns to 68 microns, even particle size distribution, add the proportion of absorbent charcoal material, reach 0.75g/cm2～0.9g/cm2, under aqueous systems, it is easy to other active substance mixes, and immersional wetting is good；
(3) specific surface area of the high-ratio surface functionalization absorbent charcoal material that the present invention obtains is 1500m2/ g～1800m2/ g, there is pore volume and the aperture of prosperity, more electrolyte can be adsorbed, strengthen the immersional wetting of electrolyte and electrode material, reduce the concentration difference polarization caused because of exoelectrical reaction, having pore volume and the aperture of prosperity, active carbon with high specific surface area material can provide transmission channel for electric charge, the quick mobile of charged particle, can effectively suppress surface compound because depositing the change in volume brought and crystallizing uneven phenomenon；
(4) combined conductive agent in slurry prepared by the present invention, the hyperbaric absorbent charcoal material of high-ratio surface is made to have good electric conductivity, easily mix with other electrode material, the excellent compatibility of composition electrode, electric double layer fake capacitance energy storage mechnism can be formed in the battery, improve the active material utilization of energy storage device, improve device energy density and power density；
(5) slurry prepared by the present invention can be widely applied to ultracapacitor or secondary battery anode and cathode additive；
(6) preparation technology of the present invention is easy, low cost, is suitable for large-scale production.
Accompanying drawing explanation
Fig. 1 is the scanning electron microscopic picture (SEM) of high-ratio surface functionalization activated carbon prepared by the present invention, sign be embodiment 1 step (2) in filter press clean after surface topography map.
Fig. 2 is the scanning electron microscopic picture (SEM) of high-ratio surface functionalization activated carbon prepared by the present invention, sign be embodiment 1 step (4) in surface topography map after high-temperature process.
Fig. 3 is the scanning electron microscopic picture (SEM) of high-ratio surface functionalization activated carbon prepared by the present invention, sign be embodiment 1 step (5) in dried surface topography map.
Fig. 4 is the scanning electron microscopic picture (SEM) of high-ratio surface functionalization activated carbon prepared by the present invention, sign be embodiment 2 step (5) in dried surface topography map.
Fig. 5 is the grain size distribution of high-ratio surface functionalization activated carbon prepared by the present invention, sign be embodiment 1 step (5) in dried grain size distribution.
Fig. 6 is the grain size distribution of high-ratio surface functionalization activated carbon prepared by the present invention, sign be embodiment 2 step (5) in dried grain size distribution.
Detailed description of the invention
Hereinafter with reference to example, the present invention is described in further detail, but the invention is not restricted to these instantiations.Below in conjunction with embodiment, the present invention is further described:
Embodiment 1
(1) pickling, weighs 100Kg activated carbon and joins 1.5m3In enamel reaction still, add 0.9t deionized water, stir 30min, being slowly added to 45Kg～50Kg concentration is 0.1mol/L～3mol/L nitric acid, and solid-liquid weight ratio is 1:5～20, stir 2h～3h, reactant is cleaned in filter press repeatedly to filtrate be neutrality；
(2) surface processes, product in (1) is joined in the enamel reaction still with heater, add 0.8t deionized water, it is subsequently adding 100Kg carbamide, heating up, heating rate is 5 DEG C/min～8 DEG C/min, and temperature controls between 90 DEG C～100 DEG C, after constant temperature stir 4h～6h, above-mentioned reactant is cleaned in filter press repeatedly to filtrate be neutrality；The surface topography map of product such as Fig. 1 shows, charcoal material surface hole after treatment cleans, shown in the specific surface area of product and the pore volume aperture following analysis report of performance；
Specific surface and pore analysis summary report
(3) load of oxygen metal compound, at 1.5m3Adding 0.9t deionized water in enamel reaction still, add 22.5Kg zinc nitrate, 2Kg polyvinyl alcohol, reactant in (2), to being completely dissolved, is joined in above-mentioned enamel reaction still by stirring, stirs 0.5h～1.5h；Measure 25%37.5Kg strong aqua ammonia to be slowly added in above-mentioned enamel reaction still, after addition, stir 3h, then remove water with centrifuge, the filter cake obtained, product is dried to moisture less than 5% under the conditions of 90 DEG C；Load percentage controls between 0.5%～15%, and the pH value of reaction system controls between 6～10, and pH value preferably 7.5～9, solid-to-liquid ratio controls between 1:5～20；
(4) high-temperature oxydation, puts into the desciccate that (3) load in the resistance furnace of nitrogen protection, and heating rate is 15 DEG C/min, and thermostat temperature is 300 DEG C, and the constant temperature oxidation response time is 4h；By this figure, surface topography map after high temperature oxidation process is as in figure 2 it is shown, can be seen that the square metal oxide after high temperature sintering is interspersed in absorbent charcoal material surrounding；
(5) secondary load of oxygen metal compound, adds 0.9t deionized water in enamel reaction still, adds zinc nitrate 36Kg, barium sulfate 42Kg, the PEG-4000 solution 20Kg of 5%, and stirring is to being completely dissolved；Add the product after step (4) processes, after stirring 1h, weigh sodium sulfate 52Kg, be stirred for 2.5h, remove moisture removal with filter press and to clean filter cake to filtrate be neutrality；Being dried by filter cake, baking temperature is 85 DEG C～90 DEG C, and drying time is 24h～26h, it is thus achieved that dry active carbon with high specific surface area；The high-ratio surface functionalization activated carbon specific surface obtained is 1500m2/ g～1800m2/ g, preferably 1500m2/ g～1600m2/ g, proportion is 0.75g/cm2～0.9g/cm2, pore volume is 0.3cm3/ g～1cm3/ g, aperture is 3nm～8nm, and particle diameter is 32 μm～68 μm, and metallic compound content is 3%～15%；Surface topography map after secondary load is as it is shown on figure 3, metallic compound in the form of sheets, is supported on active carbon material surface uniformly, and dried grain size distribution is as it is shown in figure 5, shown in dried absorbent charcoal material surface area and the pore volume aperture following analysis report of performance；
Specific surface and pore analysis summary report
(6) prepared by slurry, 59.5Kg deionized water is weighed in vacuum stirring tank, it is slowly added to 500g carboxymethyl cellulose, stirring 2h～3h is to being completely dissolved under vacuum, it is configured to the cmc soln of 0.5%, add the poly-vinyl alcohol solution 2Kg of 5%, vacuum stirring 2h, form homogeneous system；The high-ratio surface functionalization activated carbon obtained in (5) and acetylene black or electrically conductive graphite powder are added high speed mixer high speed mixing 2h～3h；In vacuum stirring tank, add the powder of above-mentioned mix homogeneously, stir 2h～3h, after being subsequently adding 1.25Kg neoprene latex, high-speed stirred 1h～2h, proceed to ball milling 2h～3h in ball mill, it is thus achieved that active carbon with high specific surface area slurry；The formula of slurry is made up of 35wt%～80wt% (weight) active carbon with high specific surface area, 3wt%～20wt% (weight) conductive agent, 0.1wt%～3wt% (weight) dispersant, 1wt%～5wt% (weight) binding agent and balance deionized water, and the viscosity of slurry controls at 2500mp.s～10000mp.s.
Embodiment 2
Step (1) and (2) are same as in Example 1；
(3) load of oxygen metal compound, at 1.5m3Adding 0.9t deionized water in enamel reaction still, add 35Kg nickel nitrate, 2Kg cetyl trimethylammonium bromide, reactant in (2), to being completely dissolved, is joined in above-mentioned enamel reaction still by stirring, stirs 0.5h～1.5h；Measure 25%22.5Kg strong aqua ammonia to be slowly added in above-mentioned enamel reaction still, after addition, stir 3h, then remove water with centrifuge, the filter cake obtained, product is dried to moisture less than 5% under the conditions of 90 DEG C；
(4) high-temperature oxydation, puts in the resistance furnace of argon shield by the desciccate that (3) load, and heating rate is 15 DEG C/min, and thermostat temperature is 350 DEG C, and the constant temperature oxidation response time is 2h；
(5) secondary load of oxygen metal compound, adds 0.9t deionized water in enamel reaction still, adds zinc nitrate 36Kg, lead sulfate 42Kg, Polyethylene Glycol-600 solution 20Kg of 5%, and stirring is to being completely dissolved；Add the product after step (4) processes, after stirring 1h, weigh sodium sulfate 52Kg, be stirred for 2.5h, remove moisture removal with filter press and to clean filter cake to filtrate be neutrality；Being dried by filter cake, baking temperature is 85 DEG C～90 DEG C, and drying time is 24h～26h, it is thus achieved that dry high-ratio surface functionalization activated carbon；Surface topography map after secondary load as shown in Figure 4, dried grain size distribution as shown in Figure 6, shown in dried absorbent charcoal material surface area and the pore volume aperture following analysis report of performance；
Specific surface and pore analysis summary report
(6) prepared by slurry, 59.5Kg deionized water is weighed in vacuum stirring tank, it is slowly added to 500g methylcellulose, stirring 2h～3h is to being completely dissolved under vacuum, it is configured to the methocel solution of 0.5%, add the dodecyl sodium sulfate 2Kg of 5%, vacuum stirring 2h, form homogeneous system；The high-ratio surface functionalization activated carbon obtained in (5) and Graphene or Carbon fibe powder are added high speed mixer high speed mixing 2h～3h；In vacuum stirring tank, add the powder of above-mentioned mix homogeneously, stir 2h～3h, after being subsequently adding 1.25Kg politef, high-speed stirred 1h～2h, proceed to ball milling 2h～3h in ball mill, it is thus achieved that high-ratio surface functionalization activated carbon slurry.
Embodiment 3
Same as in Example 1, but in (1), nitric acid becomes phosphoric acid, and other is constant.
Embodiment 4
Same as in Example 1, but in (1), nitric acid becomes hydrochloric acid, and other is constant.
Embodiment 5
Same as in Example 1, but in (2), carbamide becomes carbon ammonium, and other is constant.
Embodiment 6
Same as in Example 1, but in (2), carbamide becomes ethylenediamine, and other is constant.
Embodiment 7
Same as in Example 1, but in (2), carbamide becomes hydrogen peroxide, and other is constant.
Embodiment 8
Same as in Example 1, but in (3), zinc nitrate becomes zinc oxide, and other is constant.
Embodiment 9
Same as in Example 1, but in (3), zinc nitrate becomes manganese dioxide, and other is constant.
Embodiment 10
Same as in Example 1, but in (3), polyvinyl alcohol becomes dodecyl sodium sulfate, and other is constant.
Embodiment 11
Same as in Example 1, but in (6), carboxymethyl cellulose becomes hydroxypropyl methyl cellulose, and other is constant.
Embodiment 12
Same as in Example 1, but in (6), carboxymethyl cellulose becomes hydroxyethyl cellulose, and other is constant.
Embodiment 13
Same as in Example 1, but in (6), carboxymethyl cellulose becomes Vingon, and other is constant.
Claims (14)
1. a high-ratio surface functionalization absorbent charcoal material preparation method, is characterized in that comprising the following steps:
(1) pickling
Weigh activated carbon and join in enamel reaction still, add deionized water, stir 25min～35min, slow
Slow addition has the acid of oxidisability, and solid-liquid weight ratio is 1:5～20, stirs 2h～3h, by reactant at plate
Frame pressure filter cleans repeatedly to filtrate be neutrality；
(2) surface processes
Product in step (1) is joined in the enamel reaction still with heater, adds deionized water,
Adding weak oxidant, stirring, heat up, heating rate is 5 DEG C/min～8 DEG C/min, and temperature controls
Between 90 DEG C～100 DEG C, after constant temperature stir 4h～6h, by above-mentioned reactant in filter press repeatedly
Cleaning to filtrate is neutrality；
(3) load of oxygen metal compound
Adding deionized water, oxygen metal compound, dispersant in enamel reaction still, stirring is to completely
Dissolve；Product in step (2) is joined in above-mentioned enamel reaction still, stirs 0.5h～1.5h；
Measure 25% strong aqua ammonia to be slowly added in above-mentioned enamel reaction still, after addition, stir 2.5h～3.5h,
Then water is removed with centrifuge, the filter cake obtained, under the conditions of 90 DEG C, product is dried to moisture low
In 5%；
(4) high-temperature oxydation
Being put into by the desciccate that step (3) loads in the resistance furnace of inert gas shielding, heating rate is
15 DEG C/min, thermostat temperature is 300 DEG C～350 DEG C, and the constant temperature oxidation response time is 2h～4h；
(5) secondary load of oxygen metal compound
Adding deionized water in enamel reaction still, add oxygen metal compound, dispersant, stirring is extremely
It is completely dissolved；Add the product after step (4) processes, after stirring 1h～1.5h, weigh sodium sulfate
It is 2:3 with oxygen metal compound weight ratio, is stirred for 2.5h～3h, remove water with filter press
Dividing and cleaning filter cake to filtrate is neutrality；Being dried by filter cake, baking temperature is 85 DEG C～90 DEG C,
Drying time is 24h～26h, it is thus achieved that dry high-ratio surface functionalization activated carbon.
High-ratio surface functionalization absorbent charcoal material preparation method the most according to claim 1, is characterized in that:
The acid with oxidisability described in step (1) is any one in nitric acid, phosphoric acid or hydrochloric acid, concentration
At 0.1mol/L～3mol/L.
High-ratio surface functionalization absorbent charcoal material preparation method the most according to claim 1, is characterized in that:
Weak oxidant described in step (2) is any one in carbamide, carbon ammonium, ethylenediamine or hydrogen peroxide.
High-ratio surface functionalization absorbent charcoal material preparation method the most according to claim 1, is characterized in that:
Oxygen metal compound described in step (3) is nickel nitrate, zinc nitrate, zinc oxide or titanium dioxide
In manganese any one, load percentage is 0.5%～15%, reaction system pH control 7.5～9, solid-to-liquid ratio is
1:5～20.
High-ratio surface functionalization absorbent charcoal material preparation method the most according to claim 1, is characterized in that:
Dispersant described in step (3) or step (5) be cetyl trimethylammonium bromide, 12
In sodium alkyl sulfonate, polyvinyl alcohol, PEG-4000 or Polyethylene Glycol-600 any one.
High-ratio surface functionalization absorbent charcoal material preparation method the most according to claim 1, is characterized in that:
Oxygen metal compound described in step (5) be zinc nitrate and lead sulfate mixture or zinc nitrate and
Barium sulfate mixture.
High-ratio surface functionalization absorbent charcoal material preparation method the most according to claim 1, is characterized in that:
Active carbon with high specific surface area described in step (5) be specific surface be 1500m2/ g～1800m2/ g, than
It is heavily 0.75g/cm2～0.9g/cm2, pore volume is 0.3cm3/ g～1cm3/ g, aperture is 3nm～8nm,
Particle diameter is 32 μm～68 μm, and metallic compound content is 3%～15%.
8. a high-ratio surface functionalization absorbent charcoal material, is characterized in that: include in claim 1～7 arbitrary
The high-ratio surface function that high-ratio surface functionalization absorbent charcoal material preparation method described in item application obtains
Change absorbent charcoal material.
9. the electrode slurry preparation method containing high-ratio surface functionalization absorbent charcoal material, including application right
Require that the high-ratio surface functionalization absorbent charcoal material preparation method described in 1 obtains high-ratio surface function
Change absorbent charcoal material, it is characterized in that: also comprise the steps:
(6) prepared by slurry
In vacuum stirring tank, add deionized water, be slowly added to binding agent, stir under vacuum
2h～3h, to being completely dissolved, is configured to the binder solution of 0.5wt%, adds the dispersant of 5wt%,
Vacuum stirring 2h～3h, form homogeneous system；The high-ratio surface functionalization that will obtain in step (5)
Activated carbon and conductive agent powder add high speed mixer high speed mixing 2h～3h；In vacuum stirring tank
Add the powder of mix homogeneously, stir 2h～3h, after being subsequently adding binding agent, high-speed stirred 1h～2h,
Proceed in ball mill after ball milling 2h～3h, it is thus achieved that active carbon with high specific surface area slurry.
Electrode slurry preparation side containing high-ratio surface functionalization absorbent charcoal material the most according to claim 9
Method, is characterized in that: the dispersant described in step (6) be cetyl trimethylammonium bromide, ten
In dialkyl sulfonates, polyvinyl alcohol, PEG-4000 or Polyethylene Glycol-600 any one.
The 11. electrode slurry preparation sides containing high-ratio surface functionalization absorbent charcoal material according to claim 9
Method, is characterized in that: the slurry described in step (6) is by 35wt%～80wt% (weight) high-ratio surface
Activated carbon, 3wt%～20wt% (weight) conductive agent, 0.1wt%～3wt% (weight) dispersant,
1wt%～5wt% (weight) binding agent and balance deionized water composition, the viscosity of slurry controls
2500mp.s～10000mp.s.
The 12. electrode slurry preparation sides containing high-ratio surface functionalization absorbent charcoal material according to claim 9
Method, is characterized in that: in step (6), conductive agent is that acetylene black, Graphene, electrically conductive graphite or carbon are fine
In dimension any one or two kinds of.
The 13. electrode slurry preparation sides containing high-ratio surface functionalization absorbent charcoal material according to claim 9
Method, is characterized in that: in step (6), binding agent is carboxymethyl cellulose, methylcellulose, hydroxypropyl
In ylmethyl cellulose, hydroxyethyl cellulose, neoprene, politef or Vingon
Any one or more.
14. 1 kinds of electrode slurrys containing high-ratio surface functionalization absorbent charcoal material, is characterized in that: include that right is wanted
The electrode slurry applying described high-ratio surface functionalization absorbent charcoal material any one of 9～13 is asked to prepare
The electrode slurry containing high-ratio surface functionalization absorbent charcoal material that method obtains.
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| CN111377443B (en) * | 2018-12-29 | 2022-06-07 | 中国石油化工股份有限公司 | Copper-doped activated carbon composite material and preparation method thereof |
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