CN108511756A - A kind of aqueous, environmental protective electrocondution slurry and preparation method thereof - Google Patents
A kind of aqueous, environmental protective electrocondution slurry and preparation method thereof Download PDFInfo
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- CN108511756A CN108511756A CN201810191863.XA CN201810191863A CN108511756A CN 108511756 A CN108511756 A CN 108511756A CN 201810191863 A CN201810191863 A CN 201810191863A CN 108511756 A CN108511756 A CN 108511756A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
- H01M4/625—Carbon or graphite
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/621—Binders
- H01M4/622—Binders being polymers
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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
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- Y02E60/10—Energy storage using batteries
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Abstract
The invention discloses a kind of aqueous, environmental protective electrocondution slurries, including following components：In parts by mass, 5~20 parts of aqueous binders, 0.1~3 part of carboxymethyl cellulose, 0.5~10 part of carbon nanotube, 0.1~3 part of dispersing aid, 70~95 parts of solvent.A kind of preparation method of aqueous, environmental protective electrocondution slurry is added in blender and is stirred by the sequence of solvent, dispersing aid, carbon nanotube；It is pumped into progress frosted processing in sand mill again；It is filtered again into blender with diaphragm pump, carboxymethyl cellulose, high speed dispersion, filtering is added；Ready aqueous binders in S1 are added, high speed dispersion, filtering, vacuumize defoaming again.With excellent low temperature performance, and solve the problems, such as that aqueous carbon nano tube paste viscosity is unstable.
Description
Technical field
The invention belongs to the technical fields of battery manufacture, specifically, being related to a kind of aqueous, environmental protective electrocondution slurry and its system
Preparation Method.
Background technology
Carbon nanotube is one-dimensional electric material, and carbon nanotube has reticular structure, because with excellent electric conductivity and again
It is forthright and be widely used as lithium ion battery novel conductive agent.Carbon nano-tube material has the big pi bond of delocalization, easy shape between Guan Yuguan
It is pi-conjugated at π-, the problem of reuniting together, nano material caused to be difficult to disperse.Report carbon nanotube oleaginous system point at present
Scattered technology is very ripe, and industrialization is for a long time, but solves the unstable skill of carbon nanotube slurry in water-based system
So far there are no has been reported that for art bottleneck, and carbon nanotube water-based system is unstable, will produce layering.
Carbon nanotube generally uses NMP oil-based solvents to disperse, and applies in anode sizing agent, evaporates NMP in painting process
Recovery processing, present battery manufacturers spend the fund of great number to purchase retracting device to recycle NMP, but have many battery systems
It makes quotient's NMP discharges and environmental requirement is not achieved.
In addition, discharge performance is drastically deteriorated lithium ion battery at low ambient temperatures, lithium ion battery has been seriously affected low
Use under warm environment, " Li dendrite " that inside battery generates can cause safety problem.
Invention content
For deficiency above-mentioned in the prior art, a kind of aqueous, environmental protective electrocondution slurry of present invention offer and preparation method thereof,
With environmentally friendly, cost-effective, excellent low temperature performance, and solves the unstable difficulty of aqueous carbon nano tube paste viscosity
Topic.
In order to achieve the above object, the solution that the present invention uses is：A kind of aqueous, environmental protective electrocondution slurry, including it is following
Component：
In parts by mass, 5~20 parts of aqueous binders, 0.1~3 part of carboxymethyl cellulose, 0.5~10 part of carbon nanotube,
0.1~3 part of dispersing aid, 70~95 parts of solvent.
Further, the aqueous binders are LA series aqueous binders, in LA133, LA133N, LA132 extremely
Few one kind.
Further, the sodium carboxymethylcellulose be CMC2200, CRT30000PA, CRT10000PA, BVH8,
At least one of CEKOL30000.
Further, the carbon nanotube is at least one of single-walled pipe, multi-walled pipes, graphene, the pipe of multi-walled pipes
Diameter is 8nm~10 μm, and pipe range is 5~12 μm.
Further, the dispersing aid be TNWDIS, in the aromatic rings class dispersing aid with hydrophilic radical at least
It is a kind of.
Further, the solvent is at least one of deionized water, distilled water；Aqueous, environmental protective electrocondution slurry is consolidated
Content is 5~20%.
A kind of preparation method of aqueous, environmental protective electrocondution slurry, includes the following steps,
S1, the aqueous binders, carboxymethyl cellulose, carbon nanotube, dispersing aid, solvent are weighed in mass ratio；
S2, load weighted material is added to by the sequence of solvent, dispersing aid, carbon nanotube in blender, it is pre-dispersed
The mixture of solid-liquid/gas three-phase coexistence is formed afterwards；
S3, it the mixture that S2 is obtained is transferred to diaphragm pump in sand mill carries out frosted processing；
S4, the mixture that S3 is obtained is filtered with diaphragm pump into blender, ready carboxymethyl cellulose in S1 is added
Element carries out high speed dispersion；Filtering, filter screen use the wedge sieve of 200~300 mesh；
S5, ready aqueous binders in S1 are added, repeat step S4, vacuumizes defoaming, obtain aqueous, environmental protective conduction
Slurry.
Further, in step S2, blender is using in high-viscosity stirring machine, ultrasonic wave dispersator, mulser
At least one controls solvent temperature at 35 ± 10 DEG C；The revolution speed of blender is 13~25RPM, rotation linear velocity be 7~
12m/s, pre-dispersed time are 10~30min；
In step S3, it is 15 that sanding media, which selects zirconium silicate pearl or the zirconium oxide bead of 1.0~1.2mm, frosted processing time,
~20min；
In step S4, blender uses double planetary mixer；The time of high speed dispersion is 20~60min；
In step S3 and step S4, diaphragm pump uses Husky3300 diaphragm pumps.
The invention has the advantages that
1, formula and stirring technique of the invention carry out good dispersion by carbon nanotube in aqueous solvent, and can allow and lead
Plasma-based material keeps stable for a long time；It solves the problems, such as that aqueous carbon nano tube paste viscosity is unstable, opens carbon nanotube aqueous
The new page of cathode application is conducive to the electric conductivity for improving electrode；
2, aqueous, environmental protective electrocondution slurry of the invention is suitable for anode and cathode, is substituted in oiliness anode with deionized water
Nmp solvent, to open aqueous anode new page；The cost of recycling NMP devices can be not only saved, but also can be done
To in green emissions, oil-based solvent will not be caused to drift out；
3, in aqueous, environmental protective electrocondution slurry of the invention, the main components of the aqueous binders of use is PAN, in PAN
There are itrile group the lone pair electrons of non-bonding, PAN segments to have ionic conductivity, can reduce Ion transfer factor to lithium-ion electric
The influence of pond internal resistance；Furthermore the superior electric conductivity of carbon nanotube is utilized, is improved than conventional conductive agent Super-P electric conductivities
2 orders of magnitude, so the synergistic effect of PAN and carbon nanotube significantly improves lithium ion battery low temperature performance；
4, aqueous, environmental protective electrocondution slurry of the invention improves electrocondution slurry by the synergistic effect of LA series of products and CMC
Dispersibility and stability.
Description of the drawings
Fig. 1 is the sem analysis figure of the aqueous, environmental protective electrocondution slurry of the present invention.
Fig. 2 is that the aqueous, environmental protective electrocondution slurry of the present invention is applied to the sem analysis figure in negative electrode slurry.
Fig. 3 is that the aqueous, environmental protective electrocondution slurry of the present invention is applied to the sem analysis figure in anode sizing agent.
Fig. 4 is the preparation flow schematic diagram of the aqueous, environmental protective electrocondution slurry of the present invention.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, the technical solution in the present invention is carried out below
It clearly and completely describes, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art obtained without creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
Below in conjunction with attached drawing 1- attached drawings 3, the invention will be further described：
Embodiment one：
The present invention provides a kind of aqueous, environmental protective electrocondution slurry, including following components：
In parts by mass, 5 parts of aqueous binders, 0.1 part of carboxymethyl cellulose, 0.5 part of carbon nanotube, dispersing aid 0.1
Part, 94.3 parts of solvent.
In the present embodiment, the aqueous binders are LA133.
In the present embodiment, the sodium carboxymethylcellulose is CMC2200.
In the present embodiment, the carbon nanotube is single-walled pipe.
In the present embodiment, the dispersing aid is TNWDIS.
In the present embodiment, the solvent is deionized water；The solid content of aqueous, environmental protective electrocondution slurry is 5.7%.
A kind of preparation method of aqueous, environmental protective electrocondution slurry, includes the following steps,
S1, the aqueous binders, carboxymethyl cellulose, carbon nanotube, dispersing aid, solvent are weighed in mass ratio；
S2, load weighted material is added to by the sequence of solvent, dispersing aid, carbon nanotube in blender, it is pre-dispersed
The mixture of solid-liquid/gas three-phase coexistence is formed afterwards；
S3, it the mixture that S2 is obtained is transferred to diaphragm pump in sand mill carries out frosted processing；
S4, the mixture that S3 is obtained is filtered with diaphragm pump into blender, ready carboxymethyl cellulose in S1 is added
Element carries out high speed dispersion；Filtering, filter screen use the wedge sieve of 200 mesh；
S5, ready aqueous binders in S1 are added, repeat step S4, vacuumizes defoaming, obtain aqueous, environmental protective conduction
Slurry.
In the present embodiment, in step S2, blender is using in high-viscosity stirring machine, ultrasonic wave dispersator, mulser
At least one, by solvent temperature control at 25 DEG C；The revolution speed of blender is 13RPM, rotation linear velocity is 7m/s, pre- point
It is 10min to dissipate the time；
In step S3, it is 15min that sanding media, which selects zirconium silicate pearl or the zirconium oxide bead of 1.0mm, frosted processing time,；
In step S4, blender uses double planetary mixer；The time of high speed dispersion is 20min；
In step S3 and step S4, diaphragm pump uses Husky3300 diaphragm pumps.
Embodiment two：
The present invention provides a kind of aqueous, environmental protective electrocondution slurry, including following components：
In parts by mass, 15 parts of aqueous binders, 2 parts of carboxymethyl cellulose, 2 parts of carbon nanotube, 1 part of dispersing aid, molten
80 parts of agent.
In the present embodiment, the aqueous binders are LA133N.
In the present embodiment, the sodium carboxymethylcellulose is CRT30000PA.
In the present embodiment, the carbon nanotube is multi-walled pipes, and the caliber of multi-walled pipes is 10 μm, and pipe range is 12 μm.
In the present embodiment, the dispersing aid is the aromatic rings class dispersing aid with hydrophilic radical.
In the present embodiment, the solvent is distilled water；The solid content of aqueous, environmental protective electrocondution slurry is 20%.
A kind of preparation method of aqueous, environmental protective electrocondution slurry, includes the following steps,
S1, the aqueous binders, carboxymethyl cellulose, carbon nanotube, dispersing aid, solvent are weighed in mass ratio；
S2, load weighted material is added to by the sequence of solvent, dispersing aid, carbon nanotube in blender, it is pre-dispersed
The mixture of solid-liquid/gas three-phase coexistence is formed afterwards；
S3, it the mixture that S2 is obtained is transferred to diaphragm pump in sand mill carries out frosted processing；
S4, the mixture that S3 is obtained is filtered with diaphragm pump into blender, ready carboxymethyl cellulose in S1 is added
Element carries out high speed dispersion；Filtering, filter screen use the wedge sieve of 300 mesh；
S5, ready aqueous binders in S1 are added, repeat step S4, vacuumizes defoaming, obtain aqueous, environmental protective conduction
Slurry.
In the present embodiment, in step S2, blender uses ultrasonic wave dispersator, and solvent temperature is controlled at 45 DEG C；
The revolution speed of blender is 25RPM, rotation linear velocity is 12m/s, and the pre-dispersed time is 30min；
In step S3, it is 20min that sanding media, which selects zirconium silicate pearl or the zirconium oxide bead of 1.2mm, frosted processing time,；
In step S4, blender uses double planetary mixer；The time of high speed dispersion is 60min；
In step S3 and step S4, diaphragm pump uses Husky3300 diaphragm pumps.
Embodiment three：
The present invention provides a kind of aqueous, environmental protective electrocondution slurry, including following components：
In parts by mass, 7 parts of aqueous binders, 1 part of carboxymethyl cellulose, 5 parts of carbon nanotube, 2 parts of dispersing aid, solvent
85 parts.
In the present embodiment, the aqueous binders are LA133N and LA132.
In the present embodiment, the sodium carboxymethylcellulose is CRT30000PA and CRT10000PA.
In the present embodiment, the carbon nanotube is multi-walled pipes, and the caliber of multi-walled pipes is 3 μm, and pipe range is 8 μm.
In the present embodiment, the dispersing aid is the aromatic rings class dispersing aid with hydrophilic radical.
In the present embodiment, the solvent is distilled water；The solid content of aqueous, environmental protective electrocondution slurry is 15%.
A kind of preparation method of aqueous, environmental protective electrocondution slurry, includes the following steps,
S1, the aqueous binders, carboxymethyl cellulose, carbon nanotube, dispersing aid, solvent are weighed in mass ratio；
S2, load weighted material is added to by the sequence of solvent, dispersing aid, carbon nanotube in blender, it is pre-dispersed
The mixture of solid-liquid/gas three-phase coexistence is formed afterwards；
S3, it the mixture that S2 is obtained is transferred to diaphragm pump in sand mill carries out frosted processing；
S4, the mixture that S3 is obtained is filtered with diaphragm pump into blender, ready carboxymethyl cellulose in S1 is added
Element carries out high speed dispersion；Filtering, filter screen use the wedge sieve of 250 mesh；
S5, ready aqueous binders in S1 are added, repeat step S4, vacuumizes defoaming, obtain aqueous, environmental protective conduction
Slurry.
In the present embodiment, in step S2, blender uses ultrasonic wave dispersator, and solvent temperature is controlled at 35 DEG C；
The revolution speed of blender is 19RPM, rotation linear velocity is 9m/s, and the pre-dispersed time is 20min；
In step S3, it is 17min that sanding media, which selects zirconium silicate pearl or the zirconium oxide bead of 1.1mm, frosted processing time,；
In step S4, blender uses double planetary mixer；The time of high speed dispersion is 40min；
In step S3 and step S4, diaphragm pump uses Husky3300 diaphragm pumps.
Example IV：
The present invention provides a kind of aqueous, environmental protective electrocondution slurry, including following components：
In parts by mass, 7.5 parts of aqueous binders, 0.5 part of carboxymethyl cellulose, 4 parts of carbon nanotube, 1 part of dispersing aid,
87 parts of solvent.
In the present embodiment, the aqueous binders are LA133 and LA132.
In the present embodiment, the sodium carboxymethylcellulose is BVH8 and CEKOL30000.
In the present embodiment, the carbon nanotube is graphene.
In the present embodiment, the dispersing aid is the aromatic rings class dispersing aid with hydrophilic radical.
In the present embodiment, the solvent is distilled water；The solid content of aqueous, environmental protective electrocondution slurry is 13%.
A kind of preparation method of aqueous, environmental protective electrocondution slurry, includes the following steps,
S1, the aqueous binders, carboxymethyl cellulose, carbon nanotube, dispersing aid, solvent are weighed in mass ratio；
S2, load weighted material is added to by the sequence of solvent, dispersing aid, carbon nanotube in blender, it is pre-dispersed
The mixture of solid-liquid/gas three-phase coexistence is formed afterwards；
S3, it the mixture that S2 is obtained is transferred to diaphragm pump in sand mill carries out frosted processing；
S4, the mixture that S3 is obtained is filtered with diaphragm pump into blender, ready carboxymethyl cellulose in S1 is added
Element carries out high speed dispersion；Filtering, filter screen use the wedge sieve of 220 mesh；
S5, ready aqueous binders in S1 are added, repeat step S4, vacuumizes defoaming, obtain aqueous, environmental protective conduction
Slurry.
In the present embodiment, in step S2, blender uses ultrasonic wave dispersator, and solvent temperature is controlled at 27 DEG C；
The revolution speed of blender is 16RPM, rotation linear velocity is 8m/s, and the pre-dispersed time is 15min；
In step S3, it is 16min that sanding media, which selects zirconium silicate pearl or the zirconium oxide bead of 1.1mm, frosted processing time,；
In step S4, blender uses double planetary mixer；The time of high speed dispersion is 30min；
In step S3 and step S4, diaphragm pump uses Husky3300 diaphragm pumps.
Embodiment five：
The present invention provides a kind of aqueous, environmental protective electrocondution slurry, including following components：
In parts by mass, 6 parts of aqueous binders, 1 part of carboxymethyl cellulose, 2 parts of carbon nanotube, 1 part of dispersing aid, solvent
90 parts.
In the present embodiment, the aqueous binders are LA133, LA133N and LA132.
In the present embodiment, the sodium carboxymethylcellulose is CMC2200, CRT10000PA and BVH8.
In the present embodiment, the carbon nanotube is single-walled pipe and multi-walled pipes, and the caliber of multi-walled pipes is 6 μm, and pipe range is 10 μ
m。
In the present embodiment, the dispersing aid is the aromatic rings class dispersing aid with hydrophilic radical.
In the present embodiment, the solvent is distilled water；The solid content of aqueous, environmental protective electrocondution slurry is 10%.
A kind of preparation method of aqueous, environmental protective electrocondution slurry, includes the following steps,
S1, the aqueous binders, carboxymethyl cellulose, carbon nanotube, dispersing aid, solvent are weighed in mass ratio；
S2, load weighted material is added to by the sequence of solvent, dispersing aid, carbon nanotube in blender, it is pre-dispersed
The mixture of solid-liquid/gas three-phase coexistence is formed afterwards；
S3, it the mixture that S2 is obtained is transferred to diaphragm pump in sand mill carries out frosted processing；
S4, the mixture that S3 is obtained is filtered with diaphragm pump into blender, ready carboxymethyl cellulose in S1 is added
Element carries out high speed dispersion；Filtering, filter screen use the wedge sieve of 280 mesh；
S5, ready aqueous binders in S1 are added, repeat step S4, vacuumizes defoaming, obtain aqueous, environmental protective conduction
Slurry.
In the present embodiment, in step S2, blender uses ultrasonic wave dispersator, and solvent temperature is controlled at 40 DEG C；
The revolution speed of blender is 16RPM, rotation linear velocity is 8m/s, and the pre-dispersed time is 25min；
In step S3, it is 18min that sanding media, which selects zirconium silicate pearl or the zirconium oxide bead of 1.1mm, frosted processing time,；
In step S4, blender uses double planetary mixer；The time of high speed dispersion is 40min；
In step S3 and step S4, diaphragm pump uses Husky3300 diaphragm pumps.
Embodiment six：
The present invention provides a kind of aqueous, environmental protective electrocondution slurry, including following components：
In parts by mass, 5 parts of aqueous binders, 1 part of carboxymethyl cellulose, 1 part of carbon nanotube, 1 part of dispersing aid, solvent
92 parts.
In the present embodiment, the aqueous binders are LA133, LA133N and LA132.
In the present embodiment, the sodium carboxymethylcellulose be CMC2200, CRT30000PA, CRT10000PA, BVH8 and
CEKOL30000。
In the present embodiment, the carbon nanotube is single-walled pipe and multi-walled pipes, and the caliber of multi-walled pipes is 7 μm, and pipe range is 11 μ
m。
In the present embodiment, the dispersing aid is TNWDIS and the aromatic rings class dispersing aid with hydrophilic radical.
In the present embodiment, the solvent is deionized water and distilled water；The solid content of aqueous, environmental protective electrocondution slurry is
8%.
A kind of preparation method of aqueous, environmental protective electrocondution slurry, includes the following steps,
S1, the aqueous binders, carboxymethyl cellulose, carbon nanotube, dispersing aid, solvent are weighed in mass ratio；
S2, load weighted material is added to by the sequence of solvent, dispersing aid, carbon nanotube in blender, it is pre-dispersed
The mixture of solid-liquid/gas three-phase coexistence is formed afterwards；
S3, it the mixture that S2 is obtained is transferred to diaphragm pump in sand mill carries out frosted processing；
S4, the mixture that S3 is obtained is filtered with diaphragm pump into blender, ready carboxymethyl cellulose in S1 is added
Element carries out high speed dispersion；Filtering, filter screen use the wedge sieve of 270 mesh；
S5, ready aqueous binders in S1 are added, repeat step S4, vacuumizes defoaming, obtain aqueous, environmental protective conduction
Slurry.
In the present embodiment, in step S2, blender uses mulser, and solvent temperature is controlled at 45 DEG C；The public affairs of blender
Rotary speed is 20RPM, rotation linear velocity is 10m/s, and the pre-dispersed time is 28min；
In step S3, it is 19min that sanding media, which selects zirconium silicate pearl or the zirconium oxide bead of 1.18mm, frosted processing time,；
In step S4, blender uses double planetary mixer；The time of high speed dispersion is 50min；
In step S3 and step S4, diaphragm pump uses Husky3300 diaphragm pumps.
The formula and stirring technique of the present invention carries out good dispersion by carbon nanotube in aqueous solvent, and can allow conduction
Slurry keeps stable for a long time；It solves the problems, such as that aqueous carbon nano tube paste viscosity is unstable, opens carbon nanotube aqueous negative
The new page of pole application is conducive to the electric conductivity for improving electrode.The present invention aqueous, environmental protective electrocondution slurry be suitable for anode and
Cathode substitutes the nmp solvent in oiliness anode, to the new page of open aqueous anode with deionized water；It can not only save
The cost of NMP devices is recycled, but also can accomplish in green emissions, oil-based solvent will not be caused to drift out.
In the aqueous, environmental protective electrocondution slurry of the present invention, the main component of the aqueous binders of use is PAN, the nitrile in PAN
There are base the lone pair electrons of non-bonding, PAN segments to have ionic conductivity, can reduce Ion transfer factor to lithium ion battery
The influence of internal resistance；Furthermore the superior electric conductivity of carbon nanotube is utilized, is improved than conventional conductive agent Super-P electric conductivities
2 orders of magnitude, so the synergistic effect of PAN and carbon nanotube significantly improves lithium ion battery low temperature performance；This
The aqueous, environmental protective electrocondution slurry of invention improves the dispersibility and stabilization of electrocondution slurry by the synergistic effect of LA series of products and CMC
Property.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, it will be understood by those of ordinary skill in the art that：It still may be used
With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features；
And these modifications or replacements, various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (8)
1. a kind of aqueous, environmental protective electrocondution slurry, it is characterized in that：Including following components：
In parts by mass, 5~20 parts of aqueous binders, 0.1~3 part of carboxymethyl cellulose, 0.5~10 part of carbon nanotube, dispersion
0.1~3 part of auxiliary agent, 70~95 parts of solvent.
2. aqueous, environmental protective electrocondution slurry according to claim 1, it is characterized in that：The aqueous binders are LA Series of Water
Property binder, at least one of LA133, LA133N, LA132.
3. aqueous, environmental protective electrocondution slurry according to claim 1, it is characterized in that：The sodium carboxymethylcellulose is
At least one of CMC2200, CRT30000PA, CRT10000PA, BVH8, CEKOL30000.
4. aqueous, environmental protective electrocondution slurry according to claim 1, it is characterized in that：The carbon nanotube is single-walled pipe, more
The caliber of at least one of wall pipe, graphene, multi-walled pipes is 8nm~10 μm, and pipe range is 5~12 μm.
5. aqueous, environmental protective electrocondution slurry according to claim 1, it is characterized in that：The dispersing aid is TNWDIS, band
At least one of aromatic rings class dispersing aid of hydrophilic radical.
6. aqueous, environmental protective electrocondution slurry according to claim 1, it is characterized in that：The solvent is deionized water, double steamings
At least one of water；The solid content of aqueous, environmental protective electrocondution slurry is 5~20%.
7. a kind of preparation method of any aqueous, environmental protective electrocondution slurries of claim 1-6, it is characterized in that：Including following step
Suddenly,
S1, the aqueous binders, carboxymethyl cellulose, carbon nanotube, dispersing aid, solvent are weighed in mass ratio；
S2, load weighted material is added to by the sequence of solvent, dispersing aid, carbon nanotube in blender, pre-dispersed rear shape
At the mixture of solid-liquid/gas three-phase coexistence；
S3, it the mixture that S2 is obtained is transferred to diaphragm pump in sand mill carries out frosted processing；
S4, the mixture that S3 is obtained is filtered with diaphragm pump into blender, ready carboxymethyl cellulose in S1 is added, into
Row high speed dispersion；Filtering, filter screen use the wedge sieve of 200~300 mesh；
S5, ready aqueous binders in S1 are added, repeat step S4, vacuumizes defoaming, obtain aqueous, environmental protective electrocondution slurry.
8. the preparation method of aqueous, environmental protective electrocondution slurry according to claim 7, it is characterized in that：In step S2, blender
Using at least one of high-viscosity stirring machine, ultrasonic wave dispersator, mulser, solvent temperature is controlled 35 ± 10
℃；The revolution speed of blender is 13~25RPM, rotation linear velocity is 7~12m/s, and the pre-dispersed time is 10~30min；
In step S3, sanding media select 1.0~1.2mm zirconium silicate pearl or zirconium oxide bead, frosted processing time be 15~
20min；
In step S4, blender uses double planetary mixer；The time of high speed dispersion is 20~60min；
In step S3 and step S4, diaphragm pump uses Husky3300 diaphragm pumps.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108550856A (en) * | 2018-05-23 | 2018-09-18 | 山东希诚新材料科技有限公司 | Carbon nano tube/graphene composite conducting slurry and preparation method thereof |
| CN111129499A (en) * | 2019-12-30 | 2020-05-08 | 宣城研一新能源科技有限公司 | Water-based conductive adhesive for lithium battery and preparation method thereof |
| CN115069364A (en) * | 2022-06-18 | 2022-09-20 | 湖北冠毓新材料科技有限公司 | Method for improving grinding efficiency of carbon nanotube slurry |
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