CN108365224A - The preparation method of pole plate and pole plate - Google Patents
The preparation method of pole plate and pole plate Download PDFInfo
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- CN108365224A CN108365224A CN201810150290.6A CN201810150290A CN108365224A CN 108365224 A CN108365224 A CN 108365224A CN 201810150290 A CN201810150290 A CN 201810150290A CN 108365224 A CN108365224 A CN 108365224A
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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
- H01M4/64—Carriers or collectors
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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
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/665—Composites
- H01M4/667—Composites in the form of layers, e.g. coatings
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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
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/18—Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells
- H01M8/184—Regeneration by electrochemical means
- H01M8/188—Regeneration by electrochemical means by recharging of redox couples containing fluids; Redox flow type batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The invention discloses the preparation methods of pole plate and pole plate, are related to battery technology field.Including：Polyethylene conductive substrate layer, the conducting resinl bed of material and graphite flake layer；The conducting resinl bed of material is coated on the polyethylene conductive substrate layer；The graphite flake layer is bonded by the conducting resinl bed of material and the polyethylene conductive substrate layer；The pole plate can reduce surface contacted resistance, resistivity be reduced, to improve the voltage efficiency of liquid flow energy storage battery.
Description
Technical field
The present invention relates to battery technology fields, more particularly, to the preparation method of pole plate and pole plate.
Background technology
Liquid flow energy storage battery is a kind of low cost, high efficiency, environmentally friendly liquid flow energy storage battery, has energy density
With the advantages that current efficiency is high, device is simple steerable, service life is long, of low cost.Liquid flow energy storage battery mainly wraps at present
Include all-vanadium flow battery and zinc-bromine flow battery, be mainly used for the renewable energy power generations such as peak load regulation network, wind energy and solar energy,
The fields such as electric vehicle；In liquid flow energy storage battery, pole plate affects the voltage efficiency of battery, and traditional pole plate mostly uses graphite
The carbon addition type conductive sheet of pressing plate sheet material or polyethylene base material is used as pole plate, and the carbon addition type of graphite pressing plate sheet material is conductive
The manufacturing cost of sheet material is higher, and therefore, in contrast, traditional pole plate mostly uses the carbon addition type conductive sheet of polyethylene base material
It is used for pole plate, due to the limitation of mechanism, the resistivity of the carbon addition type conductive sheet of polyethylene base material is relatively high, and feels like doing
To relatively low, then the difficulty of preparation can be greatly improved.
Invention content
The purpose of the present invention is to provide pole plate, which can reduce surface contacted resistance, resistivity be reduced, to carry
The voltage efficiency of high liquid flow energy-storage battery.
To achieve the above object, the present invention provides following technical scheme：
According to an aspect of the present invention, pole plate is provided, including：Polyethylene conductive substrate layer, the conducting resinl bed of material and graphite
Lamella；
The conducting resinl bed of material is coated on the polyethylene conductive substrate layer；The graphite flake layer passes through the conducting resinl
The bed of material is bonded with the polyethylene conductive substrate layer.
Further, the conducting resinl bed of material is made of the raw material of following parts by weight meter：N-Methyl pyrrolidone 100-200
Part, 5-8 parts of Kynoar, 1-5 parts of graphene.
Further, the graphite flake layer selects 80-120 mesh graphite flakes.
Further, the thickness of the conducting resinl bed of material is 0.4-0.7mm.
The purpose of the present invention is to provide the preparation method of pole plate, the preparation method of the pole plate can prepare reduction surface and connect
Get an electric shock the pole plate hindered, and cost is relatively low.
To achieve the above object, the present invention provides following technical scheme：
According to another aspect of the present invention, the preparation method that pole plate is provided, the pole plate provided using above-mentioned technical proposal, packet
Include following steps：
S1 steps：Conductive additive will be added in polyethylene base material, using Stirring mode to mixing, obtains polyethylene
Electrically-conductive backing plate mixture；
S2 steps：The polyethylene conductive substrate mixture is fed into parallel dual-screw extruding machine, hot melt mixing is carried out and squeezes
Go out, polyethylene extrusion electrically-conductive backing plate sheet material, through being cooled and shaped, obtains the polyethylene conductive substrate layer；
S3 steps：The N-Methyl pyrrolidone solution containing Kynoar is configured in proportion, in the N- methylpyrroles
It is proportionally added into graphene in alkanone solution, using Stirring, obtains the conducting resinl bed of material；
S4 steps：The conducting resinl bed of material is applied on the polyethylene conductive substrate layer using coating machine；
S5 steps：Graphite flake layer solarization is spread to the polyethylene conductive substrate layer coated with the conducting resinl bed of material,
The graphite flake layer is bonded on the polyethylene conductive substrate layer by the conducting resinl bed of material；
S6 steps：Silica gel is bonded in the graphite flake layer, and backwards to the conducting resinl bed of material, in the polyethylene conductive base
Silica gel is bonded on plate layer and throws off silica gel after thermo-compression bonding and cooling and shaping, obtains the pole plate.
Further, before the S1 steps, the preparation method of the pole plate further includes：
Conductive black, graphite, carbon nanotube and carbon fiber powder are mixed, premixed to equal using Stirring mode
It is even, as the conductive additive.
Further, it in S1 steps, when the polyethylene conductive substrate mixture carries out hot melt mixing extrusion, squeezes out
Temperature is 200-250 DEG C, extrusion pressure 15-20MPa, and the parallel dual-screw extruding machine rotating speed is 250-300rpm；
When the polyethylene conductive substrate sheet material is cooled and shaped, the polyethylene conductive substrate sheet material is through stack
Cooling calendering formation, calendering roll temperature are 80-90 DEG C, and roller speed controls on-line velocity 4-8m/min, can be required to shear according to size
Obtain the polyethylene conductive substrate layer.
Further, in S4 steps, by the conducting resinl bed of material coated on the polyethylene conductive substrate layer it
Before, the polyethylene conductive substrate layer is used into the polishing cleaning of 400-600 mesh coated abrasive surfaces；And
In S5 steps, the graphite flake layer is uniformly shone using 80-100 mesh screens and is spread to coated with the electroconductive glue materials
On the polyethylene conductive substrate layer of layer.
Further, in S6 steps, the process for obtaining the pole plate is：
After silicone adhesive, will integrally be positioned in the mold of fixed thickness, by mold be positioned in compression molding instrument into
Row is hot bonding and is cooled and shaped, and after cooling and shaping, opening mold throws off silica gel, obtains the pole plate.
Further, when the compression molding instrument is hot bonding, hot pressing temperature is 140-170 DEG C, hot pressing pressure
40-60kg/cm2, hot pressing time 200-300s；And
When the compression molding instrument is cooled and shaped, cooling pressure 40-60kg/cm2, cooling temperature 25-30
DEG C, cooling time 200-300s.
Compared with prior art, beneficial effects of the present invention are：
Pole plate according to the present invention, it is viscous by the conducting resinl bed of material on polyethylene conductive substrate layer for the pole plate
Graphite flake layer is tied, graphite flake layer makes pole plate reduce surface contacted resistance, reduces resistivity, improves the voltage of liquid flow energy storage battery
Efficiency；
The preparation method of the preparation method of pole plate according to the present invention, the pole plate is prepared and can be reduced by six steps
The pole plate of surface contacted resistance, and raw material is using polyethylene base material so that the manufacturing cost of the preparation method is relatively low, and
It avoids due to being limited by mechanism, reduces the difficulty of the carbon addition type conductive sheet resistivity of polyethylene base material, it is only necessary to
On polyethylene conductive substrate layer plus one layer of graphite flake layer, preparation are got up fairly simple.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, other drawings may also be obtained based on these drawings.
Fig. 1 is the structural schematic diagram of pole plate provided in an embodiment of the present invention；
Fig. 2 is the flow chart of the preparation method of pole plate provided in an embodiment of the present invention；
Fig. 3 is the flow chart of the preparation method of pole plate provided in an embodiment of the present invention.
Icon：10- polyethylene conductive substrate layers；The 20- conducting resinl bed of materials；30- graphite flake layers.
Specific implementation mode
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
The every other embodiment that personnel are obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for the description present invention and simplify description, do not indicate or imply the indicated device or element must have a particular orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for description purposes only, and is not understood to indicate or imply relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
According to an aspect of the present invention, pole plate is provided, as shown in Figure 1, including：Polyethylene conductive substrate layer 10, conduction
Compound layer 20 and graphite flake layer 30；
The conducting resinl bed of material 20 is coated on polyethylene conductive substrate layer 10；Graphite flake layer 30 is by the conducting resinl bed of material 20 and gathers
Ethylene electrically-conductive backing plate layer 10 bonds.
Pole plate according to the present invention passes through the conducting resinl bed of material for the pole plate on polyethylene conductive substrate layer 10
20 bond graphite flake layer 30, and for graphite flake layer 30 so that pole plate reduces surface contacted resistance, reduction resistivity improves liquid energy-storage electricity
The voltage efficiency in pond.
According to a kind of embodiment of pole plate of the present invention, the conducting resinl bed of material 20 is made of the raw material of following parts by weight meter：N-
100-200 parts of methyl pyrrolidone, 5-8 parts of Kynoar, 1-5 parts of graphene.
Pole plate according to the present invention, the purpose which selects the above raw material composition in parts by weight are
So that the conducting resinl bed of material 20 has preferable electric conductivity and adhesive property, wherein preferably, the conducting resinl bed of material 20 is by following
The raw material of parts by weight meter forms：100 parts of N-Methyl pyrrolidone, 5 parts of Kynoar, 1 part of graphene can be carried further
The electric conductivity and adhesive property of the high conducting resinl bed of material 20.
According to a kind of embodiment of pole plate of the present invention, graphite flake layer 30 selects 80-20 mesh graphite flakes.
Pole plate according to the present invention, the selection for graphite flake layer 30, graphite flake layer 30 select 80-20 mesh graphite flakes, should
It is minimum that graphite flake layer 30 enables to the polar board surface contact resistance to reduce, and further increases the voltage effect of liquid flow energy storage battery
Rate；Wherein it is preferred to which graphite flake layer 30 selects 80 mesh.
According to a kind of embodiment of pole plate of the present invention, the thickness of the conducting resinl bed of material 20 is 0.4-0.7mm.
Pole plate according to the present invention, the purpose that the thickness of the conducting resinl bed of material 20 is 0.4-0.7mm are so that the conducting resinl
The bed of material 20 has preferable electric conductivity；The thickness of silica gel is 1-2mm.
According to another aspect of the present invention, the preparation method of pole plate is provided, as shown in Fig. 2, being carried using above-mentioned technical proposal
The pole plate of confession, includes the following steps：
S1 steps：Conductive additive will be added in polyethylene base material, using Stirring mode to mixing, obtains polyethylene
Electrically-conductive backing plate mixture；
S2 steps：Polyethylene conductive substrate mixture is fed into parallel dual-screw extruding machine, carries out hot melt mixing extrusion, is squeezed
Go out polyethylene conductive substrate sheet material, through being cooled and shaped, obtains polyethylene conductive substrate layer；
S3 steps：The N-Methyl pyrrolidone solution containing Kynoar is configured in proportion, in N- methyl pyrrolidones
It is proportionally added into graphene in solution, using Stirring, obtains the conducting resinl bed of material；
S4 steps：The conducting resinl bed of material is applied on polyethylene conductive substrate layer using coating machine；
S5 steps：Graphite flake layer solarization is spread to the polyethylene conductive substrate layer coated with the conducting resinl bed of material, electroconductive glue materials
Graphite flake layer is bonded on polyethylene conductive substrate layer by layer；
S6 steps：Silica gel is bonded in graphite flake layer, and backwards to the conducting resinl bed of material, the silicon bonded on polyethylene conductive substrate layer
Glue throws off silica gel after thermo-compression bonding and cooling and shaping, obtains pole plate.
The preparation method of the preparation method of pole plate according to the present invention, the pole plate is prepared and can be reduced by six steps
The pole plate of surface contacted resistance, and raw material is using polyethylene base material so that the manufacturing cost of the preparation method is relatively low, and
It avoids due to being limited by mechanism, reduces the difficulty of the carbon addition type conductive sheet resistivity of polyethylene base material, it is only necessary to
On polyethylene conductive substrate layer plus one layer of graphite flake layer, preparation are got up fairly simple.
According to a kind of embodiment of the preparation method of pole plate of the present invention, as shown in figure 3, before S1 steps, pole plate
Preparation method further includes：
Conductive black, graphite, carbon nanotube and carbon fiber powder are mixed, premixed to equal using Stirring mode
It is even, as conductive additive.
The preparation method of pole plate according to the present invention adds carbon nanotube and carbon fiber in general conductive additive
Powder so that the netted company's of twining overlap joint is formed after addition polyethylene base material inside polyethylene conductive substrate layer made of mixed refining process,
The deformation of polyethylene conductive substrate layer can be effectively prevented, and realizes good conducting, reduces resistivity.
It is mixed in polyethylene conductive substrate in S1 steps according to a kind of embodiment of the preparation method of pole plate of the present invention
When conjunction material carries out hot melt mixing extrusion, extrusion temperature is 200-250 DEG C, extrusion pressure 15-20MPa, Co rotating Twin Screw Extrusion
Machine rotating speed is 250-300rpm；
When polyethylene conductive substrate sheet material is cooled and shaped, polyethylene conductive substrate sheet material is cooled down through stack to be rolled
Molding, calendering roll temperature are 80-90 DEG C, and roller speed controls on-line velocity 4-8m/min, shearing can be required to obtain poly- second according to size
Alkene electrically-conductive backing plate layer.
The preparation method of pole plate according to the present invention, it should be noted that the carbon of obtained polyethylene conductive substrate layer adds
Add content control in 40%-60%, 10 Ω mm of test body resistivity ＜, elongation at break >=30% is, it can be achieved that doubling is bonded
It is not broken.
According to a kind of embodiment of the preparation method of pole plate of the present invention, in S4 steps, applied by the conducting resinl bed of material
Before on polyethylene conductive substrate layer, polyethylene conductive substrate layer is used into the polishing cleaning of 400-600 mesh coated abrasive surfaces；With
And
In S5 steps, graphite flake layer is uniformly shone using 80-100 mesh screens and is spread to the poly- second coated with the conducting resinl bed of material
On alkene electrically-conductive backing plate layer.
The preparation method of pole plate according to the present invention, by the conducting resinl bed of material coated on polyethylene conductive substrate layer it
Before, it needs that polyethylene conductive substrate layer is carried out polishing cleaning using sand paper so that polyethylene conductive substrate layer smooth surface, just
It is coated on polyethylene conductive substrate layer in the conducting resinl bed of material, and makes the more uniform of conducting resinl bed of material coating；
Also, graphite linings are uniformly shone using sieve and are spread to the polyethylene conductive substrate layer coated with the conducting resinl bed of material,
So that graphite linings shine spread more uniformly so that reduce to the more consistent property of polar board surface contact resistance.
According to a kind of embodiment of the preparation method of pole plate of the present invention, in S6 steps, the process for obtaining pole plate is：
Glue-line bonding after, will integrally be positioned in the mold of fixed thickness, by mold be positioned in compression molding instrument into
Row is hot bonding and is cooled and shaped, and after cooling and shaping, opening mold throws off silica gel, obtains pole plate.
According to a kind of embodiment of the preparation method of pole plate of the present invention, when compression molding instrument is hot bonding, heat
It is 140-170 DEG C to press temperature, hot pressing pressure 40-60kg/cm2, hot pressing time 200-300s；And
When compression molding instrument is cooled and shaped, cooling pressure 40-60kg/cm2, cooling temperature is 25-30 DEG C,
Cooling time is 200-300s.
The preparation method of pole plate according to the present invention, in order to enable compression molding instrument is hot bonding and is cooled to pole plate
Type it is better, then, by the control of hot pressing temperature at 140-170 DEG C, hot pressing pressure is controlled in 40-60kg/cm2, hot pressing
Time control is controlled in 200-300s, cooling pressure in 40-60kg/cm2, cooling temperature control is at 25-30 DEG C, cooling time
Control is in 200-300s.
The optional factor of the preparation method of pole plate and pole plate according to the present invention is more.Claim according to the present invention can
To be combined into multiple embodiments, therefore the technical solution that claim combinations according to the present invention go out is in the protection of the present invention
Within the scope of.Present invention top base frame construction is further described through below in conjunction with specific embodiments.
Embodiment 1
Pole plate according to the present invention, including：Polyethylene conductive substrate layer 10, the conducting resinl bed of material 20 and graphite flake layer 30；
The conducting resinl bed of material 20 is coated on polyethylene conductive substrate layer 10；Graphite flake layer 30 is led by the conducting resinl bed of material 20 with polyethylene
Electric substrate layer 10 bonds；Wherein, the conducting resinl bed of material 20 is made of the raw material of following parts by weight meter：100 parts of N-Methyl pyrrolidone,
5 parts of Kynoar, 1 part of graphene；The thickness of the conducting resinl bed of material is 0.4mm；Graphite flake layer selects 80 mesh graphite flakes.
Embodiment 2
Pole plate according to the present invention, including：Polyethylene conductive substrate layer 10, the conducting resinl bed of material 20 and graphite flake layer 30；
The conducting resinl bed of material 20 is coated on polyethylene conductive substrate layer 10；Graphite flake layer 30 is led by the conducting resinl bed of material 20 with polyethylene
Electric substrate layer 10 bonds；Wherein, the conducting resinl bed of material 20 is made of the raw material of following parts by weight meter：200 parts of N-Methyl pyrrolidone,
8 parts of Kynoar, 5 parts of graphene；The thickness of the conducting resinl bed of material 20 is 0.7mm；Graphite flake layer selects 120 mesh graphite flakes.
Embodiment 3
Pole plate according to the present invention, including：Polyethylene conductive substrate layer 10, the conducting resinl bed of material 20 and graphite flake layer 30；
The conducting resinl bed of material 20 is coated on polyethylene conductive substrate layer 10；Graphite flake layer 30 is led by the conducting resinl bed of material 20 with polyethylene
Electric substrate layer 10 bonds；Wherein, the conducting resinl bed of material 20 is made of the raw material of following parts by weight meter：150 parts of N-Methyl pyrrolidone,
7 parts of Kynoar, 3 parts of graphene；The thickness of the conducting resinl bed of material is 0.5mm；Graphite flake layer selects 100 mesh graphite flakes.
Embodiment 4
The preparation method of pole plate according to the present invention, includes the following steps：Conductive additive will be added in polyethylene base material,
Using Stirring mode to mixing, polyethylene conductive substrate mixture is obtained；The feeding of polyethylene conductive substrate mixture is same
To double screw extruder, hot melt mixing extrusion is carried out, polyethylene extrusion electrically-conductive backing plate sheet material obtains polyethylene through being cooled and shaped
Electrically-conductive backing plate layer；The N-Methyl pyrrolidone solution containing Kynoar is configured in proportion, in N-Methyl pyrrolidone solution
In be proportionally added into graphene, using Stirring, obtain the conducting resinl bed of material；Using coating machine on polyethylene conductive substrate layer
Apply the conducting resinl bed of material；Graphite flake layer solarization is spread to the polyethylene conductive substrate layer coated with the conducting resinl bed of material, electroconductive glue materials
Graphite flake layer is bonded on polyethylene conductive substrate layer by layer；Silica gel is bonded in graphite flake layer, and backwards to the conducting resinl bed of material, poly-
Silica gel is bonded on ethylene electrically-conductive backing plate layer and throws off silica gel after thermo-compression bonding and cooling and shaping, obtains pole plate.
Embodiment 5
The preparation method of pole plate according to the present invention, includes the following steps：By conductive black, graphite, carbon nanotube and
Carbon fiber powder mixes, and is premixed to uniform using Stirring mode, as conductive additive；It is led being added in polyethylene base material
Electric additive obtains polyethylene conductive substrate mixture using Stirring mode to mixing；Polyethylene conductive substrate is mixed
Material feeding parallel dual-screw extruding machine, carries out hot melt mixing extrusion, and polyethylene extrusion electrically-conductive backing plate sheet material is obtained through being cooled and shaped
To polyethylene conductive substrate layer；The N-Methyl pyrrolidone solution containing Kynoar is configured in proportion, in N- methylpyrroles
It is proportionally added into graphene in alkanone solution, using Stirring, obtains the conducting resinl bed of material；Polyethylene conductive substrate layer is used
The polishing cleaning of 400 mesh coated abrasive surfaces, the conducting resinl bed of material is applied using coating machine on polyethylene conductive substrate layer；By graphite flake layer
It is uniformly shone and is spread to the polyethylene conductive substrate layer coated with the conducting resinl bed of material using 80 mesh screens, in graphite flake layer silicon bonded
Glue, and backwards to the conducting resinl bed of material, silica gel is bonded on polyethylene conductive substrate layer, after silicone adhesive, will integrally it be positioned over solid
In the mold for determining thickness, mold is positioned in compression molding instrument and is hot bonding and is cooled and shaped, after cooling and shaping, opened
Mold is opened, silica gel is thrown off, obtains pole plate.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe is described in detail invention with reference to foregoing embodiments, it will be understood by those of ordinary skill in the art that：It is still
Either which part or all technical features can be carried out so that technical scheme described in the above embodiments is modified
Equivalent replacement；And these modifications or replacements, it does not separate the essence of the corresponding technical solution various embodiments of the present invention technical side
The range of case.
Claims (10)
1. pole plate, which is characterized in that including：Polyethylene conductive substrate layer, the conducting resinl bed of material and graphite flake layer；
The conducting resinl bed of material is coated on the polyethylene conductive substrate layer；The graphite flake layer passes through the conducting resinl bed of material
It is bonded with the polyethylene conductive substrate layer.
2. pole plate according to claim 1, which is characterized in that the conducting resinl bed of material by following parts by weight meter raw material group
At：100-200 parts of N-Methyl pyrrolidone, 5-8 parts of Kynoar, 1-5 parts of graphene.
3. pole plate according to claim 1, which is characterized in that the graphite flake layer selects 80-120 mesh graphite flakes.
4. pole plate according to claim 1, which is characterized in that the thickness of the conducting resinl bed of material is 0.4-0.7mm.
5. the preparation method of pole plate, which is characterized in that use claim 1-4 any one of them pole plates, include the following steps：
S1 steps：Conductive additive will be added in polyethylene base material, using Stirring mode to mixing, obtains polyethylene conductive
Substrate mixture；
S2 steps：The polyethylene conductive substrate mixture is fed into parallel dual-screw extruding machine, carries out hot melt mixing extrusion, is squeezed
Go out polyethylene conductive substrate sheet material, through being cooled and shaped, obtains polyethylene conductive substrate layer；
S3 steps：The N-Methyl pyrrolidone solution containing Kynoar is configured in proportion, in the N-Methyl pyrrolidone
It is proportionally added into graphene in solution, using Stirring, obtains the conducting resinl bed of material；
S4 steps：The conducting resinl bed of material is applied on the polyethylene conductive substrate layer using coating machine；
S5 steps：Graphite flake layer solarization is spread to the polyethylene conductive substrate layer coated with the conducting resinl bed of material, it is described
The graphite flake layer is bonded on the polyethylene conductive substrate layer by the conducting resinl bed of material；
S6 steps：Silica gel is bonded in the graphite flake layer, and backwards to the conducting resinl bed of material, in the polyethylene conductive substrate layer
Upper cohesive silica gel throws off silica gel after thermo-compression bonding and cooling and shaping, obtains the pole plate.
6. the preparation method of pole plate according to claim 5, which is characterized in that before the S1 steps, the pole plate
Preparation method further include：
Conductive black, graphite, carbon nanotube and carbon fiber powder are mixed, premixed to uniform, work using Stirring mode
For the conductive additive.
7. the preparation method of pole plate according to claim 5, which is characterized in that in the S1 steps, in the poly- second
When alkene electrically-conductive backing plate mixture carries out hot melt mixing extrusion, extrusion temperature is 200-250 DEG C, extrusion pressure 15-20MPa, institute
It is 250-300rpm to state parallel dual-screw extruding machine rotating speed；
When the polyethylene conductive substrate sheet material is cooled and shaped, the polyethylene conductive substrate sheet material is cooled down through stack
Calendering formation, calendering roll temperature are 80-90 DEG C, and roller speed controls on-line velocity 4-8m/min, shearing can be required to obtain according to size
The polyethylene conductive substrate layer.
8. the preparation method of pole plate according to claim 5, which is characterized in that in the S4 steps, led by described
Before electric compound layer is coated on the polyethylene conductive substrate layer, the polyethylene conductive substrate layer is used into 400-600 mesh
Coated abrasive surface polishing cleaning；And
In the S5 steps, the graphite flake layer is uniformly shone using 80-100 mesh screens and is spread to coated with the electroconductive glue materials
On the polyethylene conductive substrate layer of layer.
9. the preparation method of pole plate according to claim 5, which is characterized in that in the S6 steps, obtain the pole
The process of plate is：
It after silicone adhesive, will integrally be positioned in the mold of fixed thickness, mold be positioned in compression molding instrument and carries out heat
Pressure viscosity connects and is cooled and shaped, and after cooling and shaping, opening mold throws off silica gel, obtains the pole plate.
10. the preparation method of pole plate according to claim 9, which is characterized in that carry out hot pressing in the compression molding instrument
When bonding, hot pressing temperature is 140-170 DEG C, hot pressing pressure 40-60kg/cm2, hot pressing time 200-300s；And
When the compression molding instrument is cooled and shaped, cooling pressure 40-60kg/cm2, cooling temperature is 25-30 DEG C, cold
But the time is 200-300s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810150290.6A CN108365224B (en) | 2018-02-13 | 2018-02-13 | Polar plate and preparation method thereof |
Applications Claiming Priority (1)
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| CN115447215A (en) * | 2022-07-26 | 2022-12-09 | 北京国电锐新科技有限公司 | Preparation method of conductive sheet, conductive sheet and novel flow battery bipolar plate |
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