CN113909012A - Production facility of graphite alkene coating current collector - Google Patents
Production facility of graphite alkene coating current collector Download PDFInfo
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- CN113909012A CN113909012A CN202111172721.7A CN202111172721A CN113909012A CN 113909012 A CN113909012 A CN 113909012A CN 202111172721 A CN202111172721 A CN 202111172721A CN 113909012 A CN113909012 A CN 113909012A
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- Prior art keywords
- current collector
- guide rail
- conductive current
- winding wheel
- spraying
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
- B05B5/08—Plant for applying liquids or other fluent materials to objects
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
- B05B12/085—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to flow or pressure of liquid or other fluent material to be discharged
- B05B12/087—Flow or presssure regulators, i.e. non-electric unitary devices comprising a sensing element, e.g. a piston or a membrane, and a controlling element, e.g. a valve
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/20—Arrangements for agitating the material to be sprayed, e.g. for stirring, mixing or homogenising
- B05B15/25—Arrangements for agitating the material to be sprayed, e.g. for stirring, mixing or homogenising using moving elements, e.g. rotating blades
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B16/00—Spray booths
- B05B16/20—Arrangements for spraying in combination with other operations, e.g. drying; Arrangements enabling a combination of spraying operations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
- B05D3/0466—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases the gas being a non-reacting gas
- B05D3/0473—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases the gas being a non-reacting gas for heating, e.g. vapour heating
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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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- 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
Abstract
The invention discloses a production device of a graphene coating conductive current collector, which comprises a spraying unit, wherein the spraying unit comprises: a slurry barrel; the stirring rod of the stirrer extends into the slurry barrel; one end of the conduit is communicated with the bottom of the slurry barrel, the other end of the conduit is communicated with the electrostatic spraying needle, and the electrostatic spraying needle is arranged in the shell; two opposite walls of the shell are provided with notches; a propulsion and flow-restricting device to control the flow rate and flow of the coating material in the conduit; a drying device arranged outside the shell; the production apparatus further includes: an atmosphere thermal reduction treatment device provided outside the drying device; the guide rail penetrates through the notch, and two ends of the guide rail are respectively connected with the first winding wheel and the second winding wheel; the conveying direction of the guide rail is from the first winding wheel to the second winding wheel; and the driving device is arranged between the atmosphere thermal reduction treatment device and the second winding wheel and is used for driving the guide rail to convey. The invention can realize the large-scale production of the graphene coating conductive current collector with excellent quality and controllable performance.
Description
Technical Field
The invention relates to the technical field of equipment manufacturing, in particular to production equipment for a graphene coating conductive current collector.
Background
The conductive current collector is an important component of a lithium ion battery core, and plays a role in attaching battery active substances, conducting electricity, connecting a battery electrode material and an external power supply, and ensuring the structural integrity and stability of the battery, but the untreated common conductive current collector has the problems of poor adhesion effect, high internal resistance, poor overall conductivity after coating, easy corrosion by electrolyte under long-time circulation or high voltage and the like, therefore, carbon-coated aluminum foils are mostly adopted to solve the problems, namely, a layer of conductive carbon coating with the thickness of 1-2 mu m is respectively coated on two surfaces of the current collector in a flow casting mode, so that the adhesion between the electrode material and the current collector is improved, the conductivity of an overall pole piece is improved, and the electrolyte corrosion resistance, high voltage resistance and the like of the conductive current collector are improved. However, the conventional carbon-coated aluminum foil is thick in coating, so that the cost is increased, the integral internal resistance of the electrode plate is increased, the conductivity of the conductive carbon black particles is poor, and the protection effect on the current collector is not ideal.
The graphene has extremely high electronic conductivity and mechanical properties, the two-dimensional structure with the nanometer size can form an ultrathin and compact protective coating, and the wrinkle structure formed on the surface of the protective coating can effectively improve the adhesion effect of the electrode material. Research shows that under the same test condition, the battery coated with the graphene aluminum foil still maintains 91% of reversible specific capacity after continuous charging and discharging for 950 hours, and the reversible specific capacity of the traditional aluminum foil battery is only 75%. Therefore, the graphene has a very wide application prospect as a surface coating of the conductive current collector.
However, the graphene-coated aluminum foil is still in the research and development stage of the laboratory at present, and the main reason is that the preparation method mostly adopts chemical vapor deposition and other preparation technologies with high cost, which are difficult to realize batch production, and only can be prepared in a small-batch and intermittent manner.
In conclusion, the design and implementation of the production equipment for the continuous low-cost graphene coating conductive current collector have great significance.
Disclosure of Invention
Therefore, the embodiment of the invention provides production equipment for a graphene coating conductive current collector, so as to solve the problems in the prior art.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
the embodiment of the invention provides production equipment for a graphene coating conductive current collector, which comprises a spraying unit, wherein the spraying unit comprises:
the top of the slurry barrel is provided with an opening;
the stirrer is arranged on the outer side of the top of the slurry barrel, and a stirring rod of the stirrer extends into the slurry barrel from an opening at the top of the slurry barrel;
one end of the conduit is communicated with the bottom of the slurry barrel, the other end of the conduit is communicated with the electrostatic spraying needle, and the electrostatic spraying needle is arranged in the shell; the shell is parallel to the spraying direction of the electrostatic spraying needle head, and two opposite walls are provided with notches which are vertical to the spraying direction of the electrostatic spraying needle head;
a propulsion and flow-restricting device to control the flow rate and flow of the coating material in the conduit;
the drying device is arranged outside the shell and is close to one notch;
the production apparatus further includes:
the atmosphere thermal reduction treatment device is arranged outside the drying device and at one side away from the shell;
the two ends of the guide rail respectively penetrate through one notch on the shell, and the two ends of the guide rail are respectively connected with the first winding wheel and the second winding wheel; the first winding wheel is arranged outside the shell and at one side deviating from the drying device, and the second winding wheel is arranged outside the atmosphere hot reduction treatment device and at one side deviating from the drying device; the conveying direction of the guide rail is from the first winding wheel to the second winding wheel; the guide rail passes through the drying device and the atmosphere heat reduction treatment device;
and the driving device is arranged between the atmosphere thermal reduction treatment device and the second winding wheel and is used for driving the guide rail to convey.
Preferably, the spraying units are two, and the spraying directions of the two spraying units are opposite; the two spraying units are arranged in sequence along the conveying direction of the guide rail.
Furthermore, the spraying device also comprises a steering wheel which is arranged between the two spraying units; the guide rail is in surface contact with the steering wheel.
Preferably, the device also comprises a plurality of high-temperature-resistant steel guide wheels which are respectively arranged in the drying device and the atmosphere heat reduction treatment device; the high temperature resistant steel guide wheel is contacted with the surface of the guide rail.
Preferably, the electrostatic painting needle consists of 1-12 sub-needles.
Preferably, the housing is provided with a blowing device and a fire extinguishing device.
Preferably, the voltage of the positive electrode in electrostatic spraying is 10-30 kV.
Preferably, the drying temperature of the drying device is 70-110 ℃.
Preferably, the atmosphere thermal reduction treatment device is sequentially divided into three temperature zones from left to right, the temperature of the temperature zones at the left and right sides is 70-100 ℃, and the temperature of the temperature zone at the middle is 300-.
Further, protective gas is introduced into the atmosphere thermal reduction treatment device, and the protective gas is N2、Ar、CO2One or more of (a).
Compared with the prior art, the invention has at least the following beneficial effects:
(1) the production equipment of the graphene coating conductive current collector provided by the invention can prepare the graphene coating conductive current collector with excellent performance, overcomes the defects of insufficient conductivity and poor coating protection effect of the traditional carbon-coated aluminum foil, fully exerts the advantages of extremely high conductivity, extremely thin two-dimensional structure and the like of a graphene material, and further improves the electrochemical stability and high pressure resistance of the conductive current collector.
(2) According to the production equipment of the graphene coating conductive current collector, the thickness of the graphene coating of the prepared graphene coating conductive current collector can be accurately adjusted by more than 10nm by adjusting a plurality of process parameters such as voltage, the number of sub-needle heads of an electrostatic spraying needle head, the transmission speed and the like, so that the internal resistance of the contact between the conductive current collector and an electrode material is reduced, and the production and preparation cost is greatly reduced.
(3) The production equipment of the graphene coating conductive current collector provided by the invention realizes one-step continuous batch production of the graphene coating conductive current collector.
(4) The production equipment of the graphene coating conductive current collector provided by the invention is simple in structure, modularized and easy to realize large-scale industrial copying and popularization.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other drawings may be derived from the provided drawings by those of ordinary skill in the art without inventive effort.
The drawings are only for purposes of illustration and description, and are not intended to limit the scope of the invention, which is defined by the claims, which follow.
Fig. 1 is a schematic view of production equipment for a graphene coated conductive current collector provided in embodiment 1 of the present invention;
fig. 2 is a schematic view of production equipment for a graphene-coated conductive current collector provided in embodiment 2 of the present invention.
Description of reference numerals:
in the figure, 1-a stirrer, 2-a slurry barrel, 3-a propelling and flow limiting device, 4-a guide pipe, 5-a first winding wheel, 6-a shell, 7-an electrostatic spraying needle, 8-a drying device, 9-an atmosphere reduction heat treatment device, 10-a high-temperature resistant steel guide wheel, 11-a guide rail, 12-a driving device, 13-a second winding wheel and 14-a steering wheel.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, "a plurality" means two or more unless otherwise specified. The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present invention are intended to distinguish between the referenced items. For a scheme with a time sequence flow, the term expression does not need to be understood as describing a specific sequence or a sequence order, and for a scheme of a device structure, the term expression does not have distinction of importance degree, position relation and the like.
Furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements specifically listed, but may include other steps or elements not expressly listed that are inherent to such process, method, article, or apparatus or that are added to such process, method, article, or apparatus based on the optimization concepts of the present invention.
Example 1
The embodiment provides a production device of a graphene-coated conductive current collector, as shown in fig. 1.
The production apparatus includes a coating unit including:
the top of the slurry barrel 2 is provided with an opening;
the stirrer 1 is arranged on the outer side of the top of the slurry barrel 2, and a stirring rod of the stirrer extends into the slurry barrel 2 from an opening at the top of the slurry barrel 2; the graphene oxide solution is filled in the slurry barrel 2 and is continuously stirred by the stirrer 1, so that the graphene oxide solution is uniformly dispersed;
one end of the conduit 4 is communicated with the bottom of the slurry barrel 2, the other end of the conduit is communicated with the electrostatic spraying needle 7, and the electrostatic spraying needle 7 is arranged inside the shell 6; the shell 6 is parallel to the spraying direction of the electrostatic spraying needle 7, and two opposite walls are provided with notches which are vertical to the spraying direction of the electrostatic spraying needle 7; the electrostatic spraying needle consists of 1-12 sub-needles, and the spraying thickness of the graphene coating can be controlled by changing the number of the sub-needles; the shell 6 is internally provided with a blast device and an emergency fire extinguishing device, the blast device can rapidly discharge gas in the electrostatic spraying equipment, and the emergency fire extinguishing device can automatically sense ignition starting and manual emergency starting, spray dry powder and extinguish a fire source;
a propulsion and flow-limiting device 3 to control the flow rate and quantity of the coating material in said conduit 4; the propelling and current limiting device 3 consists of a pushing device and a current limiting device together, and can ensure that the graphene solution is extruded at a constant speed;
a drying device 8 which is arranged outside the shell 6 and is close to one notch; the drying device 8 consists of a temperature control system and a blowing device, the temperature is controlled between 70 ℃ and 110 ℃, and the blowing device can quickly discharge the gas in the drying equipment;
the production apparatus further includes:
an atmosphere thermal reduction treatment device 9 which is arranged outside the drying device 8 and at one side away from the shell 6; the atmosphere thermal reduction treatment device 9 consists of gradient temperature rise and atmosphere protection, the temperature at two ends of the device is 70-199 ℃, the intermediate temperature is 300-500 ℃, protective gas is continuously injected into the device in the whole process for atmosphere protection, and the protective gas comprises N2Ar and CO2One or more of (a);
two ends of the guide rail 11 respectively penetrate through one notch on the shell 6, and two ends of the guide rail are respectively connected with the first winding wheel 5 and the second winding wheel 13; the first winding wheel 5 is arranged outside the shell 6 and at one side departing from the drying device 8, and the second winding wheel 13 is arranged outside the atmosphere heat reduction treatment device 9 and at one side departing from the drying device 8; the conveying direction of the guide rail 11 is from the first winding wheel 5 to the second winding wheel 13; the guide rail passes through the drying device 8 and the atmosphere heat reduction treatment device 9;
the driving device 12 is arranged between the atmosphere heat reduction treatment device 9 and the second winding wheel 13 and is used for driving the guide rail 11 to convey; the first winding wheel 5 and the second winding wheel 13 are used for winding and unwinding conductive current collector foils, and the speed is matched with that of the driving device 12;
a plurality of high-temperature resistant steel guide wheels 10 are arranged in the drying device 8 and the atmosphere heat reduction treatment device 9 and are used for assisting the guide rail 11 to move at the two positions; the guide rail 11 is also made of high-temperature-resistant steel;
when in electrostatic spraying, the negative pole of the high-voltage power supply is connected on the guide rail 11, and the voltage is (-5) -0 kV; the anode is connected with the electrostatic spraying needle 7, and the voltage is 10-30 kV.
The production equipment of the graphene coating conductive current collector provided by the embodiment has the use method that:
placing a conductive current collector (metal foil) on the first winding wheel 5, connecting the other end of the conductive current collector with the second winding wheel 13, and winding the prepared graphene-coated conductive current collector; the conductive current collector is conveyed into a spraying unit through a guide rail 11 and a driving device 12, graphene oxide is sprayed on one surface of the conductive current collector through an electrostatic spraying needle 7, and the conductive current collector is dried through a drying device 8 to remove a solvent in the graphene oxide; finally, the conductive current collector with the single surface sprayed with the graphene oxide is conveyed to an atmosphere thermal reduction treatment device 9 for thermal treatment, and CO is selected as protective atmosphere2、N2Or one or more Ar gases, and the atmosphere protection is realized by continuously introducing the gases into the reduction furnace;
placing the graphene oxide solution in a slurry barrel 2, and continuously stirring by using a stirrer 1; the thickness of the graphene coating is controlled by controlling the number of the electrostatic spraying needles 7 in the spraying unit, the feeding speed of the propelling and current limiting device 3 and the matching speed of the driving device 12; the drive means 12 may be continuous or intermittent; the atmosphere thermal reduction treatment device 9 is composed of three sections, wherein the front section is air blasting drying, the middle section is atmosphere high-temperature thermal reduction, and the tail section is temperature reduction treatment.
The graphene coating conductive current collector with the single-side coated graphene coating can be directly produced and prepared by using the production equipment of the graphene coating conductive current collector.
Example 2
The present embodiment provides a production facility of graphene coating current collector, its structure is basically the same as embodiment 1, and the difference lies in:
the production equipment provided by the embodiment is provided with two spraying units, wherein the spraying directions of the two spraying units are opposite, and the two spraying units are sequentially arranged along the directions from the first winding wheel 5 to the second winding wheel 13;
the production apparatus provided in this embodiment further includes a steering wheel 14 provided between the two coating units.
The production equipment of the graphene oxide coating conductive agent fluid provided by the embodiment comprises the following use methods:
placing a conductive current collector (metal foil) on the first winding wheel 5, connecting the other end of the conductive current collector with the second winding wheel 13, and winding the prepared graphene-coated conductive current collector; the conductive current collector is conveyed into a spraying unit through a guide rail 11 and a driving device 12, graphene oxide is sprayed on one surface of the conductive current collector through an electrostatic spraying needle 7, and the conductive current collector is dried through a drying device 8 to remove a solvent in the graphene oxide; then, the conductive current collector is turned by a turning wheel 14 and is transmitted into another spraying unit, graphene oxide is sprayed on the other surface of the conductive current collector electrostatically, the control parameters are the same as those of the first surface spraying, so that the spraying thicknesses of the two surfaces are consistent, and the conductive current collector is dried for the second time by a drying device 8 to remove the solvent in the graphene oxide on the surface; finally, the conductive current collector with the single surface sprayed with the graphene oxide is conveyed to an atmosphere thermal reduction treatment device 9 for thermal treatment, and CO is selected as protective atmosphere2、N2Or one or more Ar gases, and the atmosphere protection is realized by continuously introducing the gases into the reduction furnace;
placing the graphene oxide solution in a slurry barrel 2, and continuously stirring by using a stirrer 1; the thickness of the graphene coating is controlled by controlling the number of the electrostatic spraying needles 7 in the spraying unit, the feeding speed of the propelling and current limiting device 3 and the matching speed of the driving device 12; the drive means 12 may be continuous or intermittent; the atmosphere thermal reduction treatment device 9 is composed of three sections, wherein the front section is air blasting drying, the middle section is atmosphere high-temperature thermal reduction, and the tail section is temperature reduction treatment.
The graphene coating conductive current collector with the graphene coating coated on two sides can be directly produced and prepared by using the production equipment for coating the graphene conductive current collector of the embodiment.
All the technical features of the above embodiments can be combined arbitrarily, and for simplicity of description, all possible combinations of the technical features of the above embodiments are not described; these examples, which are not explicitly described, should be considered to be within the scope of the present description.
The present invention has been described in considerable detail by the general description and the specific examples given above. It should be noted that it is obvious that several variations and modifications can be made to these specific embodiments without departing from the inventive concept, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The utility model provides a production facility of graphite alkene coating current collector, its characterized in that includes the spraying unit, the spraying unit includes:
the top of the slurry barrel (2) is provided with an opening;
the stirrer (1) is arranged on the outer side of the top of the slurry barrel (2), and a stirring rod of the stirrer extends into the slurry barrel (2) from an opening at the top of the slurry barrel (2);
one end of the conduit (4) is communicated with the bottom of the slurry barrel (2), the other end of the conduit is communicated with the electrostatic spraying needle head (7), and the electrostatic spraying needle head (7) is arranged inside the shell (6); the shell (6) is parallel to the spraying direction of the electrostatic spraying needle head (7), two opposite walls are provided with notches, and the notches are perpendicular to the spraying direction of the electrostatic spraying needle head (7);
-a propulsion and flow-limiting device (3) to control the flow rate and quantity of paint in the conduit (4);
the drying device (8) is arranged outside the shell (6) and is close to one notch;
the production apparatus further includes:
the atmosphere heat reduction treatment device (9) is arranged outside the drying device (8) and at one side away from the shell (6);
the two ends of the guide rail (11) respectively penetrate through one notch on the shell (6), and the two ends of the guide rail are respectively connected with the first winding wheel (5) and the second winding wheel (13); the first winding wheel (5) is arranged outside the shell (6) and at one side departing from the drying device (8), and the second winding wheel (13) is arranged outside the atmosphere heat reduction treatment device (9) and at one side departing from the drying device (8); the conveying direction of the guide rail (11) is from the first winding wheel (5) to the second winding wheel (13); the guide rail (11) passes through the drying device (8) and the atmosphere heat reduction treatment device (9);
and the driving device (12) is arranged between the atmosphere heat reduction treatment device (9) and the second winding wheel (13) and is used for driving the guide rail (11) to convey.
2. The production equipment of the graphene coated conductive current collector as claimed in claim 1, wherein there are two spraying units, and the spraying directions of the two spraying units are opposite; the two spraying units are sequentially arranged along the conveying direction of the guide rail (11).
3. The production equipment of the graphene coated conductive current collector as claimed in claim 2, further comprising a steering wheel (14) arranged between the two spraying units; the guide rail (11) is in surface contact with the steering wheel (14).
4. The production equipment of the graphene coated conductive current collector according to claim 1, further comprising a plurality of high temperature resistant steel guide wheels (10) respectively arranged in the drying device (8) and the atmosphere heat reduction treatment device (9); the high-temperature-resistant steel guide wheel (10) is in surface contact with the guide rail (11).
5. The production equipment of the graphene coated conductive current collector as claimed in claim 1, wherein the electrostatic spraying needle (7) is composed of 1-12 sub-needles.
6. The production equipment of the graphene coated conductive current collector as claimed in claim 1, wherein a blower and a fire extinguisher are arranged in the housing (6).
7. The production equipment of the graphene coated conductive current collector as claimed in claim 1, wherein the positive voltage during electrostatic spraying is 10-30 kV.
8. The production facility of a graphene coated conductive current collector according to claim 1, wherein the drying temperature of the drying device (8) is 70-110 ℃.
9. The production equipment of the graphene coated conductive current collector as claimed in claim 1, wherein the atmosphere thermal reduction treatment device (9) is internally divided into three temperature zones from left to right, the temperature of the temperature zones at the left and right sides is 70-100 ℃, and the temperature of the temperature zone in the middle is 300-500 ℃.
10. The production equipment of the graphene-coated conductive current collector as claimed in claim 9, wherein a protective gas is introduced into the atmosphere thermal reduction treatment device (9), and the protective gas is N2、Ar、CO2One or more of (a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111172721.7A CN113909012A (en) | 2021-10-08 | 2021-10-08 | Production facility of graphite alkene coating current collector |
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| CN202111172721.7A CN113909012A (en) | 2021-10-08 | 2021-10-08 | Production facility of graphite alkene coating current collector |
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| CN103779084A (en) * | 2012-10-24 | 2014-05-07 | 海洋王照明科技股份有限公司 | Anode current collector and preparation method and application thereof |
| CN105336913A (en) * | 2015-09-30 | 2016-02-17 | 薛龙均 | Electrode for electrochemical power supply and method for manufacturing same |
| KR101753129B1 (en) * | 2017-01-04 | 2017-07-04 | 한국지질자원연구원 | Manufacturing method of supercapacitor electrode containing crumpled graphene composite, electrode manufactured thereby and supercapacitor containing the same |
| CN111085416A (en) * | 2019-12-02 | 2020-05-01 | 深圳石墨烯创新中心有限公司 | Graphene composite metal foil and preparation method thereof |
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