Positive electrode plate manufacturing equipment using slurry material with an electrostatic spray gun
The electrostatic spray gun method for manufacturing positive electrode plates addresses uneven solvent evaporation and high costs by separately producing a solid-state slurry, achieving high-density, flexible, and cost-effective production.
Patent Information
- Application Number
- JP2026000005U
- Authority / Receiving Office
- JP · JP
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2026-01-02
- Publication Date
- 2026-03-03
- Estimated Expiration
- 2036-01-02
AI Technical Summary
Conventional methods for manufacturing positive electrode plates involve simultaneous production of slurry and substrate, leading to uneven solvent evaporation, hole formation, high manufacturing costs, and limited shelf life due to solvent use, with potential material damage from rolling and baking processes.
A manufacturing apparatus using an electrostatic spray gun applies a solvent-free, solid-state positive electrode slurry material to a substrate, allowing separate production and adhesion via thermoplastic PEO at high temperatures, eliminating baking and rolling steps.
Results in a high-density, uniform positive electrode plate with enhanced lithium conduction energy, reduced manufacturing costs, and increased flexibility by enabling room-temperature storage and separate production of slurry and substrate.
Smart Images
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Abstract
Description
[Technical Field]
[0001] The present invention relates to a positive electrode plate, and more particularly to a manufacturing apparatus for a positive electrode plate using a slurry material with an electrostatic spray gun. [Background technology]
[0002] Conventional positive electrode materials include a positive electrode including a positive electrode substrate and a positive electrode slurry layer coated on the positive electrode substrate, the positive electrode slurry layer being composed of a positive electrode slurry containing a plurality of positive electrode particles for storing or releasing lithium ions, a polymer material including PVDF (Polyvinylidene Fluoride), a solvent for dispersing the materials in the positive electrode slurry, a plurality of conductive agents, and a plurality of ceramic particles for guiding lithium ions to disperse lithium ion channels. Summary of the Invention [Problem to be solved by the invention]
[0003] In the prior art, a method for preparing a positive electrode slurry involves adding a solvent to ensure uniform dispersion of the materials in the positive electrode slurry, coating the solvent-containing positive electrode slurry on a positive electrode substrate, and then baking the coating to remove the solvent. However, this conventional method is relatively simple and has the following drawbacks. First, during the baking process, the uniformity of the originally uniformly prepared slurry may be destroyed due to uneven evaporation rates at different points. Furthermore, evaporation of the solvent may result in holes in the final positive electrode slurry layer. Therefore, rolling pressure is required to ensure close adhesion between the positive electrode slurry layer and the positive electrode substrate. This not only increases the cost of the manufacturing process, but also may cause the originally designed powder to be crushed or burst due to the high rolling pressure, thereby affecting the final properties. Furthermore, the positive electrode slurry containing the solvent must be directly coated on the positive electrode substrate after manufacturing is complete. In this method, the positive electrode slurry and the positive electrode substrate must be manufactured simultaneously, and the wet positive electrode slurry has a short shelf life, which limits the manufacturing locations of the positive electrode slurry and the positive electrode substrate. In addition, recovery of evaporated solvents also increases costs.
[0004] Therefore, there is a need to develop a novel apparatus for manufacturing positive electrode plates using a slurry material with an electrostatic spray gun that overcomes the above-mentioned drawbacks of the prior art.
[0005] The present invention was developed through intensive research by the inventor in consideration of the above problems, and its purpose is to provide an apparatus for manufacturing positive electrode plates using a slurry material with an electrostatic spray gun.
[0006] That is, because the particles of each positive electrode slurry material are very fine, when the positive electrode slurry material is sprayed onto the carrier plate from the electrostatic spray gun, the positive electrode slurry material is electrostatically attracted to each other, resulting in a high bulk density, which results in a positive electrode plate with high energy density and further increased lithium conduction energy. Furthermore, since the positive electrode slurry material and the positive electrode substrate are manufactured separately in the present invention, the positive electrode plate is not limited to being manufactured simultaneously, as in the conventional positive electrode slurry and positive electrode substrate. This makes it easy to obtain the slurry material and allows it to be stored at room temperature, making the manufacturing of the positive electrode plate more flexible. Furthermore, because typical positive electrode slurries contain solvents, after the typical positive electrode slurry is applied to the positive electrode substrate, baking and rolling processes are then performed to form the positive electrode slurry layer that adheres to the positive electrode substrate. This method is costly. The slurry material adheres to the positive electrode substrate by utilizing the PEO's property of being in a molten state at high temperatures, and since no solvent needs to be added to bond it to the positive electrode substrate, baking and rolling processes are unnecessary, reducing manufacturing costs. In addition, the positive electrode slurry layer applied in this manner has a uniform thickness and a high bulk density, further forming a high-density energy electrode plate. [Means for solving the problem]
[0007] To achieve the above object, one aspect of the present invention provides an apparatus for manufacturing a positive electrode plate using a slurry material with an electrostatic spray gun. The positive electrode plate includes a positive electrode substrate and a positive electrode slurry layer adhered to the positive electrode substrate. The positive electrode slurry layer is composed of the positive electrode slurry material. The positive electrode slurry material is solid at room temperature, and by independently producing positive electrode slurries in this slurry form, the positive electrode substrate and the positive electrode slurry material can be produced separately. Because the positive electrode slurry material is in a solid form without containing a solvent, it has a long shelf life and can be stored at room temperature. The device is a raw material tank for containing the positive electrode slurry material, and the positive electrode slurry material is a plurality of positive electrode particles for storing or releasing lithium ions, the positive electrode particles being a plurality of positive electrode particles that are active materials; PEO that has thermoplastic properties and becomes molten at high temperatures, the PEO becoming solid at room temperature; the PEO having ion conducting ability, which can be used to conduct lithium ions and improves the lithium ion conducting ability of the entire positive electrode; and PVDF or PVDF-HFP, the PVDF / PVDF-HFP and the PEO being polymer materials, and when the positive electrode slurry material is heated to a specific temperature, the PEO and the PVDF or PVDF-HFP copolymer in the positive electrode slurry material become molten, and the entire positive electrode slurry material becomes viscous. the positive electrode slurry material comprises PVDF or PVDF-HFP, which is bonded to the positive electrode substrate and forms the positive electrode plate as a whole; a plurality of conductive agents for increasing the electronic conductivity of the slurry material; a lithium salt used to slide molecular chains in the polymer material and increase ion conduction ability; and a plurality of ceramic particles which are used to guide lithium ions and have high ion conductivity for lithium ions, wherein the plurality of positive electrode particles, the plurality of ceramic particles, the conductive agent, and the lithium salt are dispersed among the polymer material for supporting the entire positive electrode slurry material; the positive electrode slurry material exhibits a solid-state material structure at room temperature, and when heated to a specific temperature, PEO in the positive electrode slurry material melts to form a molten state, thereby allowing the PEO to adhere to the positive electrode substrate, and the positive electrode plate is formed;an electrostatic spray gun connected to the raw material tank, which receives the cathode slurry material in the raw material tank and applies a voltage to the cathode slurry material to generate static electricity on the surfaces of particles of the cathode slurry material in the electrostatic spray gun to form charged fine particles, and which ejects the charged fine particles from an output port of the electrostatic spray gun; and a roller belt structure located at the output port of the electrostatic spray gun, which is used to transport a carrier plate, and which is used to receive the charged fine particles ejected from the output port to form a first electrode plate, and Because the charged fine particles are fine, when the electrostatic spray gun sprays the positive electrode slurry material onto the carrier plate, the particles are attracted to each other by static electricity, resulting in a high bulk density and a positive electrode plate with a high energy density, which further increases lithium conduction energy. When the charged fine particles come into contact with the metal plate, an electrostatic attraction force is generated between the charged fine particles and the metal plate, causing the charged fine particles to be attracted to the metal plate to form the first electrode plate. The positive electrode plate further includes a heater connected to the roller belt structure and used to heat the first electrode plate to cause the charged fine particles to form a molten material and adhere it to the positive electrode substrate to form the positive electrode plate. The positive electrode plate having a positive electrode slurry layer formed thereon does not require the baking and rolling steps, so the material in the positive electrode slurry material is not damaged by the baking and rolling stress.
[0008] At least the following points will become clear from the description and drawings to be described later. [Brief explanation of the drawings]
[0009] [Figure 1] 1 is a schematic diagram illustrating an apparatus for manufacturing a positive electrode plate using a slurry material by using an electrostatic spray gun according to an embodiment of the present invention. [Figure 2]1 is an application example showing a positive electrode plate manufacturing device using a slurry material with an electrostatic spray gun according to an embodiment of the present invention. [Figure 3] 1 is a schematic cross-sectional view showing a ceramic particle and its composite layer according to an embodiment of the present invention. [Figure 4] 1 is a flow chart showing an apparatus for manufacturing a positive electrode plate using a slurry material with an electrostatic spray gun according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION
[0010] The present invention will be described below with reference to the accompanying drawings, in which: FIG. 1 is a block diagram of a conventional optical fiber cable; FIG. 2 is a block diagram of a conventional optical fiber cable;
[0011] First, an example of a specific embodiment of a manufacturing apparatus for a positive electrode plate using a slurry material and an electrostatic spray gun according to the present invention will be described with reference to FIGS. 1 to 4. FIG.
[0012] In the apparatus for manufacturing a positive electrode plate using a slurry material with an electrostatic spray gun according to the present invention, the positive electrode plate 20 includes a positive electrode substrate 21 and a positive electrode slurry layer 22 bonded to the positive electrode substrate 21. In a typical solid-state or semi-solid battery, a liquid positive electrode slurry containing a solvent is applied to the positive electrode substrate 21, followed by baking and rolling steps to form the positive electrode plate 20. This method requires the positive electrode slurry and the positive electrode substrate 21 to be manufactured simultaneously, and the wet positive electrode slurry has a short shelf life. Furthermore, the baking and rolling steps can cause the material in the positive electrode slurry to break down, potentially affecting battery performance. Therefore, in the present invention, the positive electrode slurry is composed of a positive electrode slurry material 100. The positive electrode slurry material 100 is solid at room temperature. This slurry-type positive electrode slurry can be produced independently and does not necessarily need to be bonded to the positive electrode substrate 21 first. This allows the positive electrode substrate 21 and the positive electrode slurry material 100 to be produced separately. This makes it easier to obtain the positive electrode slurry material 100, and makes the production of the positive electrode plate 20 more flexible. Because the positive electrode slurry material 100 is in a solvent-free solid form, it has a long shelf life and can be stored at room temperature. Furthermore, the positive electrode plate 20 having the positive electrode slurry layer 22 formed using the positive electrode slurry material 100 does not require the baking and rolling steps, and therefore the material in the positive electrode slurry material 100 is not damaged by the stress of the baking and rolling steps.
[0013] The apparatus for manufacturing a positive electrode plate using the positive electrode slurry material 100 with an electrostatic spray gun mainly comprises the following components.
[0014] <Raw material tank 10> It is used to contain the positive electrode slurry material 100. The positive electrode slurry material 100 is in powder form, and the size of the powder particles ranges from 0.01 nm to 10 mm.
[0015] Each of the positive electrode slurry materials 100 mainly comprises the following components: The configuration of each component will be described below.
[0016] The positive electrode particles 12 are used to store or release lithium ions and are active materials, and are one or more of lithium cobalt oxide (LCO) particles, single-crystal or polycrystalline nickel-cobalt-manganese (NCM) particles, and lithium manganese iron phosphate (LMFP) or lithium iron phosphate (LFP) particles.
[0017] PEO14 has thermoplastic properties and melts at high temperatures. Because PEO14 has ion-conducting ability, it can be used to guide lithium ions, thereby increasing the lithium-ion conducting ability of the entire positive electrode.
[0018] PVDF or PVDF-HFP15 and the PEO14 are polymer materials. When the positive electrode slurry material 100 is heated to a certain temperature, the PEO14 and the PVDF or PVDF-HFP15 copolymer in the positive electrode slurry material 100 melt, the positive electrode slurry material 100 as a whole becomes viscous, and the positive electrode slurry material 100 adheres to the positive electrode substrate 21, forming the positive electrode plate 20 as a whole.
[0019] The conductive agents 18 are used to increase the electronic conductivity of the positive electrode slurry material 100. The conductive agents 18 are at least one of carbon nanotubes, nano-sized amorphous carbon, and graphene.
[0020] The lithium salt 16 is used to slide the molecular chains in the polymer material and enhance ion conduction capability. The lithium salt 16 is either PDDA-TFSI (poly(diallyl dimethyl ammonium)-bis(trifluoromethanesulfonyl)imide) or Py14-TFSI (N-methyl-N-butylpyrrolidinium bis(trifluoromethylsulfonyl)imide).
[0021] The plurality of ceramic particles 160 are used to guide lithium ions, and the plurality of ceramic particles 160 have high ionic conductivity for lithium ions. The lithium ions are guided by the plurality of dispersed ceramic particles 160 so as to prevent abnormal accumulation of the lithium ions in the positive electrode slurry material 100 and the occurrence of a side reaction with the positive electrode slurry material 100. The plurality of ceramic particles 160 are selected from the group consisting of lithium aluminum germanium phosphate (LAGP), lithium aluminum titanium phosphate (LATP), lithium lanthanum zirconium oxide (Li7La3Zr2O 12 The electrolytes are lithium lanthanum zirconium oxide (LLZO), lithium lanthanum titanium oxide (LLTO), or sulfide solid electrolyte (LPSC).
[0022] The positive electrode particles 12, the ceramic particles 160, the conductive agent 18, and the lithium salt 16 are dispersed among the polymer material that supports the positive electrode slurry material 100 as a whole.
[0023] The weight ratio of the positive electrode particles 12, the polymer material and the lithium salt 16, and the conductive agent 18 and the ceramic particles 160 is in the range of 88-97:10-2:2-1, i.e., the ratio of the positive electrode particles, the polymer material and the lithium salt, and the conductive agent and the ceramic particles is A:B:C. A is in the range of 88-97, B is in the range of 10-2, and C is in the range of 2-1. Any ratio between A, B, and C within these ranges is acceptable in the present invention. Throughout this specification, numerical values used in the same manner have the same definition.
[0024] The positive electrode slurry material 100 has a solid material structure at room temperature, and when heated to 50°C to 240°C, the PEO14 in the positive electrode slurry material 100 melts to form a molten state, allowing the PEO14 to adhere to the positive electrode substrate 21, thereby forming the positive electrode plate 20.
[0025] The electrostatic spray gun 30 is connected to the raw material tank 10 and is used to receive the positive electrode slurry material 100 in the raw material tank 10, apply a voltage to the positive electrode slurry material 100, generate static electricity on the surfaces of the particles of the positive electrode slurry material 100 in the electrostatic spray gun 30, form charged fine particles 150, and spray the charged fine particles 150 from the output port 34 of the electrostatic spray gun 30.
[0026] The electrostatic spray gun 30 has a voltage structure 32 capable of applying a voltage to the positive electrode slurry material 100. The voltage ranges between 0.1 and 100 kV.
[0027] A roller belt structure 60 is positioned at the output port 34 of the electrostatic spray gun 30, and the roller belt structure 60 is used to transport a carrier plate 65, which is used to receive the charged fine particles 150 ejected from the output port 34. From the output port 34, the charged fine particles 150 are ejected onto the positive electrode substrate 21, forming a first electrode plate 500.
[0028] Because the particles of each of the positive electrode slurry materials 100 are very fine (the size of the powder particles of each of the positive electrode slurry materials 100 ranges from 0.01 nm to 10 mm), when the positive electrode slurry materials 100 are sprayed onto the carrier plate 65 from the electrostatic spray gun 30, the positive electrode slurry materials 100 are attracted to each other by the action of static electricity, exhibiting a high bulk density, thereby forming a positive electrode plate with high energy density and further increasing lithium conduction energy.
[0029] The roller belt structure 60 includes a roller set 62 including a plurality of rollers. A conveyor belt 64 is wound around the roller set 62, and the rollers in the roller set 62 are drivable to move the conveyor belt 64.
[0030] The carrier plate 65 is a metal plate, preferably an aluminum plate. The metal plate is unwound from a metal roll 70. The metal roll is connected to the roller belt structure 60. During operation, the metal plate unwound by the metal roll 70 is laid flat on the conveyor belt 64 and moves together with the conveyor belt 64. The metal plate is the positive electrode substrate 21. When the rollers in the roller set 62 rotate, the conveyor belt 64 is driven, and the positive electrode substrate 21 positioned on the conveyor belt 64 is moved by the conveyor belt 64 to the output port 34 of the electrostatic spray gun 30.
[0031] When the charged microparticles 150 come into contact with the metal plate, an electrostatic attraction force is generated between the charged microparticles 150 and the metal plate, and the charged microparticles 150 are attracted to the metal plate, thereby forming the first electrode plate 500.
[0032] A heater 40 is connected to the roller belt structure 60, and the heater 40 is used to heat the first electrode plate 500 so as to cause the charged microparticles 150 to form a molten material 200, which is then bonded to the positive electrode substrate 21 to form the positive electrode plate 20.
[0033] The positive electrode slurry material 100 has a solid-state material structure at room temperature, and when heated to a temperature between 50°C and 240°C, the PEO14 in the positive electrode slurry material 100 melts to form a molten state, which allows the PEO14 to adhere to the positive electrode substrate 21, thereby forming the positive electrode plate 20.
[0034] The heater 40 includes two pressure rollers 42 arranged parallel to each other, with a receiving space 46 formed between the two pressure rollers 42 for sandwiching the first electrode plate 500, and two heating structures 44 located within the two pressure rollers 42, respectively. The two heating structures 44 are used to heat the two pressure rollers 42, thereby heating the electrically charged microparticles 150 sandwiched in the receiving space 46, and the electrically charged microparticles 150 form the molten material 200, which is then bonded to the metal plate to form the positive electrode plate 20.
[0035] Hereinafter, a manufacturing method will be provided in which the positive electrode slurry material 100 is adhered to the positive electrode substrate 21 by the above-mentioned electrostatic spray gun structure to form the positive electrode plate 20. In the following description, the definitions of the members denoted by the same reference numerals are the same as those defined in the above-mentioned structure, and therefore, the description thereof will not be repeated.
[0036] The steps of the manufacturing method according to the embodiment of the present invention will be described in detail below with reference to FIG. <Step A>: The positive electrode slurry material 100 in the raw material tank 10 is input into the electrostatic spray gun 30, and a voltage is applied to the positive electrode slurry material 100 by the electrostatic spray gun 30, causing static electricity to be generated on the surfaces of the particles of the positive electrode slurry material 100, thereby forming charged fine particles 150. <Step B>: The electrically charged fine particles 150 are output from the output port 34 of the electrostatic spray gun 30 onto the carrier plate 65 (i.e., the metal plate) of the roller belt structure 60, thereby forming the first electrode plate 500. Because the particles of the positive electrode slurry material 100 are very fine, when the positive electrode slurry material 100 is sprayed onto the carrier plate 65 from the electrostatic spray gun 30, the positive electrode slurry material 100 is attracted to each other due to the action of static electricity, resulting in a high bulk density, thereby forming a positive electrode plate with high energy density and further increasing lithium conduction energy. <Step C>: The roller belt structure 60 moves the first electrode plate 500 to the heater 40 . <Step D>: The first electrode plate 500 is placed in the heater 40 and heated, so that the charged microparticles 150 form the molten material 200 and adhere to the positive electrode substrate 21 . <Step E>: The molten material 200 is naturally cooled, and due to the temperature difference, the molten material 200 turns into a solid, and is adhered to the positive electrode substrate 21, thereby obtaining the positive electrode plate 20. At room temperature, the positive electrode slurry material 100 forms a solid positive electrode slurry layer 22.
[0037] The positive electrode plate 20, to which the positive electrode slurry material 100 is adhered to form the positive electrode slurry layer 22, is manufactured by the above-described manufacturing method. The positive electrode plate 20 includes the positive electrode slurry layer 22 and a positive electrode substrate 21 to which the positive electrode slurry layer 22 is applied. The positive electrode slurry layer 22 is mainly formed from the positive electrode slurry material 100. The positive electrode slurry material 100 includes a plurality of positive electrode particles 12, PEO 14, PVDF or PVDF-HFP 15, a plurality of conductive agents 18, a lithium salt 16, and a plurality of ceramic particles 160. The plurality of positive electrode particles 12, the plurality of ceramic particles 160, the conductive agent 18, and the lithium salt 16 are dispersed among the polymer material for supporting the entire positive electrode slurry material 100.
[0038] In this case, as shown in FIG. 3 , the outer surface of each ceramic particle 160 is further coated with a composite layer 110. The composite layer 110 includes a dopamine layer 120 that coats the outer surface of the ceramic particle 160, and a PVDF layer 130 that coats the outer surface of the dopamine layer 120. The PVDF layer 130 is made of a PVDF material. The PVDF material of the PVDF layer 130 is formed during the production of the composite layer 110 and is not formed by reacting with PVDF or PVDF-HFP in the positive electrode slurry material 100. Because the dopamine layer 120 does not completely coat the outer surfaces of the ceramic particles 160, a small portion of the surface of the ceramic particles 160 is exposed, and the PVDF layer 130 is in partial contact with the surface of the ceramic particles 160 and the dopamine layer 120.
[0039] The dopamine layer 120 is composed of multiple polydopamine molecules. Dopamine has hydrophobic properties, which can prevent the ceramic particles 160 from undergoing side reactions with external solvents. Some fluorine ions in the PVDF material form ionic bonds with corresponding lithium ions on the surface of the ceramic particles 160 to form lithium fluoride. Other partial fluorine ions in the PVDF material form hydrogen bonds with nitrogen ions of the polydopamine molecules in the dopamine layer 120, thereby forming the PVDF layer 130 that covers the outer surface of the dopamine layer 120.
[0040] An advantage of the present invention is that the powder particles of the positive electrode slurry material are very fine. When the positive electrode slurry material is sprayed onto the carrier plate from the electrostatic spray gun, the particles of the positive electrode slurry material are electrostatically attracted to each other, resulting in a high bulk density and a positive electrode plate with high energy density and enhanced lithium conduction energy. Furthermore, the present invention manufactures the positive electrode slurry material and the positive electrode substrate separately. This eliminates the need for simultaneous production of the positive electrode plate, as is the case with conventional positive electrode slurries and positive electrode substrates. This makes it easier to obtain the slurry material and allows it to be stored at room temperature, further enhancing the flexibility of positive electrode plate manufacturing. Furthermore, because typical positive electrode slurries contain solvents, after the typical positive electrode slurry is applied to the positive electrode substrate, baking and rolling processes are performed to form the positive electrode slurry layer that adheres to the positive electrode substrate. This method is costly. The slurry material adheres to the positive electrode substrate by utilizing the PEO's property of being in a molten state at high temperatures, eliminating the need for a solvent to bond to the positive electrode substrate, thereby eliminating the need for baking and rolling processes and reducing manufacturing costs. Furthermore, the positive electrode slurry layer applied in this manner has a uniform thickness and a high bulk density, resulting in a high-density energy electrode plate.
[0041] The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims. Embodiments obtained by appropriately combining the technical means devised in different embodiments are also included in the technical scope of the present invention. [Explanation of symbols]
[0042] 10 Raw material tank 12 Positive electrode particles 14 PEO 15 PVDF or PVDF-HFP 16 Lithium salts 18 Conductive Agent 20 positive electrode plate 21 Positive substrate 22 Positive electrode slurry layer 30 Electrostatic Spray Gun 32 Voltage Structure 34 output ports 40 Heater 42 Pressure roller 44 Heating structure 46 Containment Space 60 Roller belt structure 62 Roller Set 64 Conveyor Belt 65 Carrier Plate 70 Metal Roll 100 Positive electrode slurry material 110 Composite layer 120 Dopamine Layer 130 PVDF layers 150 fine particles 160 ceramic particles 200 molten material 500 First plate
Claims
1. An apparatus for manufacturing a positive electrode plate from a slurry material using an electrostatic spray gun, wherein the positive electrode plate comprises a positive electrode substrate and a positive electrode slurry layer adhered to the positive electrode substrate, the positive electrode slurry layer being made of the positive electrode slurry material, the positive electrode slurry material being solid at room temperature, and such a slurry-form positive electrode slurry being independently manufactured, thereby enabling the positive electrode substrate and the positive electrode slurry material to be manufactured separately, and the positive electrode slurry material being in a solid form not containing a solvent, having a long shelf life and being storable at room temperature, The manufacturing apparatus includes: a raw material tank for containing the positive electrode slurry material, The positive electrode slurry material is a plurality of positive electrode particles for storing or releasing lithium ions, the positive electrode particles being an active material; PEO having thermoplasticity and exhibiting a molten state at high temperatures, the PEO being solid at room temperature, the PEO having ion-conducting ability and therefore usable for conducting lithium ions, and improving the lithium-ion conducting ability of the entire positive electrode; PVDF or PVDF-HFP, wherein the PVDF, the PVDF-HFP, and the PEO are polymeric materials, and when the positive electrode slurry material is heated to a specific temperature, the PEO and the PVDF or PVDF-HFP copolymer in the positive electrode slurry material assume a molten state, the entire positive electrode slurry material becomes viscous, and the PVDF or PVDF-HFP is adhered to the positive electrode substrate, and the entire positive electrode slurry material forms the positive electrode plate; a plurality of conductive agents for increasing electronic conductivity of the slurry material, the plurality of conductive agents being selected from at least one of carbon nanotubes, nano-sized amorphous carbon, and graphene; a lithium salt used to slide molecular chains in the polymer material and enhance ion conduction capability; a plurality of ceramic particles used to guide lithium ions and having high ionic conductivity to lithium ions; the plurality of positive electrode particles, the plurality of ceramic particles, the conductive agent, and the lithium salt are dispersed among the polymer material for supporting the positive electrode slurry material; a raw material tank in which the positive electrode slurry material has a solid material structure at room temperature, and when heated to a specific temperature, PEO in the positive electrode slurry material melts to form a molten state, thereby enabling the PEO to adhere to the positive electrode substrate, thereby forming the positive electrode plate; an electrostatic spray gun connected to the raw material tank, which receives the cathode slurry material in the raw material tank, applies a voltage to the cathode slurry material, generates static electricity on surfaces of particles of the cathode slurry material in the electrostatic spray gun, and forms charged fine particles, and sprays the charged fine particles from an output port of the electrostatic spray gun; a roller belt structure located at the output port of the electrostatic spray gun, the roller belt structure being used to transport a carrier plate, the carrier plate being used to receive the charged fine particles ejected from the output port to form a first electrode plate, the carrier plate being a metal plate; a roller belt structure in which, since each of the charged fine particles is very fine, when the charged fine particles are sprayed from the electrostatic spray gun onto the carrier plate, the charged fine particles are attracted to each other by the action of static electricity, exhibiting a high bulk density, thereby forming the positive electrode plate with a high energy density, and further increasing lithium conduction energy; when the charged fine particles come into contact with the metal plate, an electrostatic adsorption force is generated between the charged fine particles and the metal plate, causing the charged fine particles to be attracted to the metal plate, thereby forming the first electrode plate; a heater connected to the roller belt structure and used to heat the first electrode plate so as to cause the charged microparticles to form a molten material and adhere to the positive electrode substrate to form the positive electrode plate; The positive electrode plate on which the positive electrode slurry layer is formed from the positive electrode slurry material does not need to undergo baking and rolling steps, and therefore, the material in the positive electrode slurry material is not damaged by the influence of stress from the baking and rolling steps.
2. The apparatus for manufacturing a positive electrode plate using a master batch material and an electrostatic gun according to claim 1, characterized in that the positive electrode slurry material is in a powder form, and the size of the powder particles is in the range of 0.01 nm to 10 mm.
3. 2. The apparatus for manufacturing a positive electrode plate using a slurry material with an electrostatic spray gun according to claim 1, wherein the plurality of positive electrode particles are selected from one or more of lithium cobalt oxide particles, single-crystal or polycrystalline nickel-cobalt-manganese particles, lithium manganese iron phosphate, and lithium iron phosphate particles.
4. 2. The apparatus for manufacturing a positive electrode plate using a slurry material with an electrostatic spray gun according to claim 1, wherein the lithium salt is selected from the group consisting of PDDA-TFSI and Py14-TFSI.
5. 2. The apparatus for manufacturing a positive electrode plate using a slurry material with an electrostatic spray gun according to claim 1, wherein the plurality of ceramic particles are selected from the group consisting of germanium aluminum lithium phosphate, titanium aluminum lithium phosphate, lithium lanthanum zirconium oxide, lithium lanthanum titanium oxide, and LPSC.
6. 2. The apparatus for manufacturing a positive electrode plate using a slurry material with an electrostatic spray gun according to claim 1, wherein the specific temperature is in the range of 50°C to 240°C, and this temperature range is capable of melting the PEO.
7. 2. The apparatus for manufacturing a positive electrode plate from a slurry material using an electrostatic spray gun according to claim 1, wherein the roller belt structure comprises a roller set including a plurality of rollers, a conveyor belt is wound around the roller set, and the plurality of rollers in the roller set are drivable to move the conveyor belt.
8. 8. The apparatus for manufacturing a positive electrode plate from a slurry material using an electrostatic spray gun according to claim 7, wherein the carrier plate is a metal plate, the metal plate is unwound by a metal roll, the metal roll and the roller belt structure are connected, and during operation, the metal plate unwound by the metal roll is laid flat on the conveyor belt and moves together with the conveyor belt, and the metal plate serves as the positive electrode substrate.
9. 2. The apparatus for manufacturing a positive electrode plate from a slurry material using an electrostatic spray gun according to claim 1, wherein the heater includes two pressure rollers arranged in parallel and side by side, a storage space for holding the first electrode plate between the two pressure rollers, and two heating structures are respectively positioned within the two pressure rollers, and the two heating structures are used to heat the two pressure rollers, thereby heating the electrically charged fine particles held in the storage space, and forming the molten material by the electrically charged fine particles, which is then adhered to the metal plate, thereby forming the positive electrode plate.
10. 2. The apparatus for manufacturing a positive electrode plate using a slurry material with an electrostatic spray gun according to claim 1, wherein the outer surface of each ceramic particle is further coated with a composite layer, the composite layer comprising a dopamine layer covering the outer surface of the ceramic particle and a PVDF layer covering the outer surface of the dopamine layer, the PVDF layer being made of a PVDF material, and the dopamine layer not completely covering the outer surface of the ceramic particle, leaving a small portion of the surface of the ceramic particle still exposed, so that the PVDF layer is partially in contact with the surface of the ceramic particle and partially in contact with the dopamine layer.