A structure for manufacturing a positive electrode plate to which a positive electrode slurry layer formed from a positive electrode slurry material is attached.

Abstract

A structure for manufacturing a positive electrode plate is provided to adhere a positive electrode slurry layer formed from a positive electrode slurry material. The present invention includes a raw material tank (10) for containing multiple positive electrode slurry materials (100), an injection molding machine (30) for receiving and heating the multiple positive electrode slurry materials in the raw material tank, a supply pipe (40) connected to the injection molding machine, a slot die (50) with a slot outlet (52) at its front end through which molten material (200) is injected into a mechanism at the rear, and a roller belt mechanism (60) for transporting a metal roll (70), which receives the molten material injected from the slot outlet. The present invention also includes a manufacturing method in which the positive electrode slurry material is attached to a positive electrode substrate to form a positive electrode plate using the above-mentioned structure. The manufacturing of the positive electrode slurry material and the positive electrode substrate is completely separated, making it easy to obtain the slurry and storable at room temperature, thereby providing greater flexibility in the manufacturing of positive electrode plates.

Description

[Technical Field]

[0001] The present invention relates to a positive electrode plate, and more particularly to a manufacturing structure of a positive electrode plate adhered with an electrode slurry layer formed by a positive electrode slurry material. [Background technology]

[0002] A conventional positive electrode material includes a positive electrode substrate, and a positive electrode slurry layer coated on the positive electrode substrate and composed of a positive electrode slurry. The positive electrode slurry includes 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 used to guide the lithium ions and disperse channels for the lithium ions.

[0003] In the prior art, the cathode slurry is prepared by adding a solvent to the cathode slurry to allow the materials in the cathode slurry to be dispersed uniformly. The cathode slurry containing the solvent is then applied to a cathode substrate, followed by baking to remove the solvent. After the solvent evaporates, the cathode slurry layer becomes porous, requiring rolling pressure to tightly bond the cathode slurry layer to the cathode substrate. Summary of the Invention [Problem to be solved by the invention]

[0004] However, this method requires two additional steps, baking and rolling, which increases manufacturing costs, and the rolling process can cause the material in the cathode slurry layer to break down, resulting in a decrease in overall battery performance.

[0005] In addition, the cathode slurry containing such a solvent needs to be directly applied to the cathode substrate after the manufacturing process is completed. However, since the manufacturing process of the cathode slurry and the cathode substrate needs to be completed simultaneously and the wet cathode slurry has a short shelf life, the manufacturing locations of the cathode slurry and the cathode substrate are limited.

[0006] The inventors believed that the above drawbacks could be improved, and after extensive research, they discovered that the above objective could be achieved by adopting a structure for manufacturing a positive electrode plate to which a positive electrode slurry layer formed from a positive electrode slurry material is attached, thereby completing the present invention.

[0007] The present invention was developed through extensive research by the inventors in consideration of the above-mentioned problems. Its purpose is to provide a structure for manufacturing a positive electrode plate that adheres a positive electrode slurry layer formed from a positive electrode slurry material. That is, by completely separating the manufacture of the positive electrode slurry material and the positive electrode substrate, the positive electrode plate is manufactured without the restriction of having to be manufactured simultaneously, as in the conventional positive electrode slurry and positive electrode substrate. This makes it easier to obtain the slurry 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, when the typical positive electrode slurry is applied to the positive electrode substrate, subsequent baking and rolling processes are required to form the positive electrode slurry layer that adheres to the positive electrode substrate. This method results in high costs. The slurry is applied to the positive electrode substrate by utilizing the PEO's property of being in a molten state at high temperatures, eliminating the need for adding a solvent to bond it to the positive electrode substrate, thereby eliminating the need for baking and rolling processes, thereby reducing manufacturing costs. Furthermore, the positive electrode slurry layer applied in this manner has a uniform thickness and a high coating density, resulting in the formation of an excellent positive electrode plate. [Means for solving the problem]

[0008] To achieve the above object, one aspect of the present invention provides a structure for manufacturing a positive electrode plate having a positive electrode slurry layer formed from a positive electrode slurry material attached thereto. The positive electrode plate includes a positive electrode substrate and the positive electrode slurry layer attached to the positive electrode substrate. The positive electrode slurry layer is composed of a plurality of positive electrode slurry materials. The plurality of positive electrode slurry materials are solid at room temperature, and the positive electrode slurries in such slurry form are independently manufactured. Therefore, the positive electrode substrate and the plurality of positive electrode slurry materials may be manufactured separately. The plurality of positive electrode slurry materials are in a solvent-free solid form, which allows for a long shelf life. The structure is a raw material tank for accommodating a plurality of positive electrode slurry materials, the positive electrode slurry material being a plurality of positive electrode particles for storing or releasing lithium ions, the positive electrode particles being a plurality of positive electrode particles which are active materials, PEO having thermoplastic properties and exhibiting a molten state at high temperatures, 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, and PVDF or PVDF-HFP, the PVDF / PVDF-HFP and the PEO being polymer materials, when the positive electrode slurry material is heated to a certain temperature, the PEO and the PVDF or PVDF-HFP copolymer in the positive electrode slurry material exhibit a molten state, the entire positive electrode slurry material becomes viscous, and is adhered to the positive electrode substrate, and the entire positive electrode slurry material is melted. the positive electrode plate comprises PVDF or PVDF-HFP forming the positive electrode plate, a plurality of conductive agents for increasing the electronic conductivity of the positive electrode slurry, a lithium salt used to slide molecular chains in the polymer material and increase ion conduction ability, and a plurality of ceramic particles used to guide lithium ions and having high ion conductivity for lithium ions, the plurality of ceramic particles being guided by the plurality of ceramic particles dispersed to prevent a situation in which lithium ions abnormally accumulate in the positive electrode slurry and cause a side reaction with the positive electrode slurry, 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, and the plurality of positive electrode slurry materials exhibit a material structure in a solid form at room temperature,a raw material tank that, when heated to a specific temperature, melts the PEO in the plurality of positive electrode slurry materials to form a molten state, thereby enabling the PEO to adhere to the positive electrode substrate and form the positive electrode plate; and an injection molding machine that is used to receive and heat the plurality of positive electrode slurry materials in the raw material tank, and turns the plurality of positive electrode slurry materials into molten materials, the injection molding machine including a raw material receiving tank for receiving the plurality of positive electrode slurry materials from the raw material tank, the raw material receiving tank having a material supply port and a material discharge port located below the raw material receiving tank, and the raw material receiving tank having a heating structure for heating the plurality of positive electrode slurry materials, and the injection molding machine that forms the molten materials from the plurality of positive electrode slurry materials; a supply pipe connected to an injection molding machine for receiving and stirring the molten material delivered from the injection molding machine, the supply pipe including a material inlet and a material outlet; a slot die connected to the material outlet of the supply pipe for receiving the uniformly mixed molten material, the slot die having a slot outlet formed at its front end, from which the molten material is injected to a rear structure by a slot die coating method; and a roller belt structure positioned at the slot outlet and used to transport a metal plate, the metal plate being the positive electrode substrate, for receiving the molten material injected from the slot outlet, the molten material being applied to the positive electrode substrate to form the positive electrode plate. The positive electrode plate of the positive electrode slurry layer formed from the plurality of positive electrode slurry materials does not need to undergo baking and rolling compression steps, and therefore the material in the plurality of positive electrode slurry materials is not affected by the baking and rolling compression stress and is not crushed.

[0009] At least the following points will become clear from the description and drawings to be described later. [Brief explanation of the drawings]

[0010] [Figure 1]2 is a schematic diagram illustrating a process for manufacturing a positive electrode plate by depositing a positive electrode slurry layer made of a positive electrode slurry material according to an embodiment of the present invention; FIG. [Figure 2] 1 is an application example showing a structure for manufacturing a positive electrode plate by applying a positive electrode slurry layer formed from a positive electrode slurry material according to an embodiment of the present invention. [Figure 3] 1 is a cross-sectional view showing a ceramic particle and its composite layer according to an embodiment of the present invention; [Figure 4] 2 is a flow chart illustrating a process for manufacturing a positive electrode plate by depositing a positive electrode slurry layer made of a positive electrode slurry material according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0011] The present invention will be described in detail below with reference to the accompanying drawings, in which: The present invention is not limited to the following examples, and can be modified as desired without departing from the spirit and scope of the present invention.

[0012] Figure 1 is a schematic diagram showing a structure for manufacturing a positive electrode plate having a positive electrode slurry layer formed from a positive electrode slurry material according to an embodiment of the present invention. Figure 2 is an application example showing a structure for manufacturing a positive electrode plate having a positive electrode slurry layer formed from a positive electrode slurry material according to an embodiment of the present invention. Figure 3 is a cross-sectional view showing the structure of ceramic particles and their composite layer according to an embodiment of the present invention. Figure 4 is an operational flowchart showing a structure for manufacturing a positive electrode plate having a positive electrode slurry layer formed from a positive electrode slurry material according to an embodiment of the present invention.

[0013] The positive electrode plate 20 includes a positive electrode substrate 21 and a positive electrode slurry layer 22 attached to the positive electrode substrate 21. In a typical solid or semi-solid battery, a liquid positive electrode slurry 24 containing a solvent is applied to the positive electrode substrate 21, followed by baking and rolling steps to form the positive electrode plate 20. In this manner, the positive electrode slurry 24 and the positive electrode substrate 21 must be manufactured simultaneously. Furthermore, the wet positive electrode slurry 24 has a short shelf life, and the baking and rolling steps may cause the material in the positive electrode slurry 24 to be crushed, thereby affecting battery performance. Therefore, in the present disclosure, the positive electrode slurry 24 is composed of a plurality of positive electrode slurry materials 100. The plurality of positive electrode slurry materials 100 are solid at room temperature. Such a slurry-form positive electrode slurry 24 can be independently manufactured and does not necessarily need to be bonded to the positive electrode substrate 21 first. Therefore, the positive electrode substrate 21 and the plurality of positive electrode slurry materials 100 can be manufactured separately, making it easy to obtain the plurality of positive electrode slurry materials 100 and more flexible in manufacturing the positive electrode plate 20. Furthermore, because the plurality of positive electrode slurry materials 100 are in a solvent-free solid form, they have a long shelf life and can be stored at room temperature. Furthermore, because the positive electrode plate 20 of the positive electrode slurry layer 22 formed by the plurality of positive electrode slurry materials 100 does not need to undergo the baking and rolling steps, the material in the plurality of positive electrode slurry materials 100 is not damaged by the stress of the baking and rolling.

[0014] The structure for manufacturing a positive electrode plate to which a positive electrode slurry layer formed from a positive electrode slurry material is attached mainly comprises the following components, each of which will be described below.

[0015] The raw material tank 10 is used to store a plurality of positive electrode slurry materials 100. Each of the positive electrode slurry materials 100 has the following configuration. A plurality of positive electrode particles 12, which are active materials used to store or release lithium ions, are selected from 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.

[0016] PEO (Poly(ethylene oxide)) 14. The PEO 14 has thermoplastic properties and becomes molten at high temperatures. The PEO 14 also has ion-conducting ability, so it can be used to conduct lithium ions, increasing the lithium-ion conducting ability of the entire positive electrode.

[0017] PVDF or PVDF-HFP15. The PVDF / 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 adheres to the positive electrode substrate 21, forming the positive electrode plate 20 as a whole.

[0018] Plural conductive agents 18. The plural conductive agents 18 are used to increase the electronic conductivity of the positive electrode slurry 24. The plural conductive agents 18 are at least one selected from the group consisting of carbon nanotubes, nanoscale amorphous carbon, and graphene.

[0019] 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).

[0020] 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 24 and the occurrence of a side reaction with the positive electrode slurry 24. 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).

[0021] 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 24 as a whole.

[0022] 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 88-97:10-2:2-1, i.e., the 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 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, and all ratios of A, B, and C within these ranges are acceptable in the present disclosure. Numerical values ​​used in the same manner throughout this specification all have the same definition.

[0023] The positive electrode slurry materials 100 have a solid material structure at room temperature, and when heated to a temperature range between 50°C and 240°C, the PEO14 in the positive electrode slurry materials 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.

[0024] An injection molding machine 30 is used to receive and heat the plurality of cathode slurry materials 100 in the raw material tank 10, and the plurality of cathode slurry materials 100 become a molten material 200. The injection molding machine 30 includes a raw material receiving tank 32 for receiving the plurality of cathode slurry materials 100 from the raw material tank 10, and the raw material receiving tank 32 has a material supply inlet 321 and a material discharge outlet 322 located below the raw material receiving tank 32. The raw material receiving tank 32 has a heating structure 323 capable of heating the plurality of cathode slurry materials 100, and the plurality of cathode slurry materials 100 form the molten material 200. The temperature of the raw material receiving tank 32 is in the range of 50°C to 240°C. This temperature range is capable of melting the PEO14.

[0025] The supply pipe 40 is connected to the material delivery port 322 of the injection molding machine 30, and is used to receive and stir the molten material 200 delivered from the injection molding machine 30. The supply pipe 40 has a material inlet 42 and a material outlet 44.

[0026] A screw assembly 46 is disposed within the supply pipe 40 and is used to agitate the molten material 200 that has entered the supply pipe 40, so that the molten material 200 is in a uniformly mixed state. The uniformly mixed molten material 200 is discharged from the material discharge port 44 of the supply pipe 40. The screw assembly 46 is selected from a single screw or a twin screw.

[0027] A slot die 50 is connected to the material outlet 44 of the supply pipe 40 and receives the uniformly mixed molten material 200. A slot outlet 52 is formed at the front end of the slot die 50, and the molten material 200 is injected from the slot outlet 52 to a rear structure by a slot-die coating method.

[0028] A roller belt structure 60 is positioned at the slot discharge opening 52, and the roller belt structure 60 is used to transport a metal roll 70, which is used to receive the molten material 200 injected from the slot discharge opening 52.

[0029] The roller belt structure 60 includes a roller assembly 62 including a plurality of rollers. A conveyor belt 64 is entrained around the roller assembly 62, and the rollers within the roller assembly 62 are interlockable to move the conveyor belt 64.

[0030] The metal roll 70 is unwound by a metal plate 72, and during operation, the metal plate 72 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 72 is the positive electrode substrate 21. When the rollers in the roller assembly member 62 rotate, the conveyor belt 64 is moved in an interlocking manner, and the positive electrode substrate 21 positioned on the conveyor belt 64 is moved to the slot outlet 52 by the conveyor belt 64. The uniformly mixed molten material 200 is injected from the slot outlet 52 onto the positive electrode substrate 21, and the molten material 200 is coated on the positive electrode substrate 21 to form the positive electrode plate 20.

[0031] Hereinafter, a manufacturing method will be disclosed in which the plurality of positive electrode slurry materials 100 are attached to the positive electrode substrate 21 using the above-described structure to form the positive electrode plate 20. In this specification, the definitions of the components denoted by the same reference numerals are the same as those defined in the above-described structure, and therefore, the description thereof will not be repeated here. Hereinafter, the steps of the manufacturing method of the present invention will be described with reference to FIG. 4.

[0032] Step A: The plurality of positive electrode slurry materials 100 in the raw material tank 10 are supplied to the material supply port 321 of the raw material receiving tank 32, and the plurality of positive electrode slurry materials 100 are heated and melted by the heating structure 323 in the raw material receiving tank 32 to form the molten material 200, which is then discharged from the material discharge port 322. The temperature of the heating structure 323 is in the range of 50°C to 240°C.

[0033] Step B: The molten material 200 discharged from the material discharge port 322 is supplied to the material inlet 42 of the supply pipe 40, the molten material 200 is uniformly stirred by the screw assembly member 46 in the supply pipe 40, and the uniformly stirred molten material 200 is injected from the slot outlet 52 of the slot die 50.

[0034] Step C: The uniformly stirred molten material 200 is injected from the slot outlet 52 onto the positive electrode substrate 21 (i.e., the metal plate 72) arranged on the roller belt structure 60. The positive electrode substrate 21 is moved by the roller assembly member 62 and the conveyor belt 64 of the roller belt structure 60. As the conveyor belt 64 moves forward, the positive electrode substrate 21 on the conveyor belt 64 also moves forward, and the molten material 200 is continuously injected from the slot outlet 52 onto the moving positive electrode substrate 21, so that the molten material 200 is applied to the positive electrode substrate 21.

[0035] Step D: The molten material 200 is cooled naturally and formed into a solid form by a temperature difference, and is attached to the positive electrode substrate 21 to form the positive electrode plate 20, thereby obtaining the positive electrode plate 20 attached with the positive electrode slurry layer 22 formed from the positive electrode slurry material 100. At room temperature, the positive electrode slurry material 100 attached above the positive electrode substrate 21 forms the solid positive electrode slurry layer 22.

[0036] The positive electrode plate 20 is manufactured by the above-described manufacturing method, and includes the positive electrode slurry layer 22 formed from the positive electrode slurry material 100. The positive electrode plate 20 includes the positive electrode slurry layer 22 and a positive electrode substrate 21 on which the positive electrode slurry layer 22 is applied. The positive electrode slurry layer 22 is mainly formed of the plurality of positive electrode slurry materials 100. Each of the positive electrode slurry materials 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 24.

[0037] In the example of 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 cathode slurry 22. The dopamine layer 120 does not completely coat the outer surfaces of the ceramic particles 160, leaving a small portion of the surface of the ceramic particles 160 exposed. Therefore, the PVDF layer 130 is partially in contact with the surfaces of the ceramic particles 160 and partially in contact with the dopamine layer 120.

[0038] The dopamine layer 120 is composed of multiple polydopamine molecules. Dopamine is hydrophobic and can prevent side reactions between the ceramic particles 160 and external solvents. Partial fluorine ions in the PVDF material ionically bond with corresponding lithium ions on the surface of the ceramic particles 160 to form lithium fluoride. Partial fluorine ions in the PVDF material hydrogen bond 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.

[0039] An advantage of the present disclosure is that the cathode slurry material and the cathode substrate are completely separated from each other. This eliminates the need for simultaneous production of the cathode plate, as is the case with conventional cathode slurries and cathode substrates. This makes the slurry easy to obtain and storable at room temperature, further enhancing the flexibility of cathode plate manufacturing. Furthermore, because typical cathode slurries contain a solvent, when the typical cathode slurry is applied to the cathode substrate, subsequent baking and rolling processes are required to form the cathode slurry layer attached to the cathode substrate. This method has been costly. However, because the slurry is applied to the cathode substrate by utilizing the PEO's molten state at high temperatures, there is no need to add a solvent to bond it to the cathode substrate. This eliminates the need for baking and rolling processes, thereby reducing manufacturing costs. Furthermore, the cathode slurry layer applied in this manner has a uniform thickness and a high coating density, resulting in the formation of an excellent cathode plate.

[0040] 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]

[0041] 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 24 Positive electrode slurry 30 injection molding machine 32 Raw material receiving tank 40 Supply pipe 42 Material input port 44 Material outlet 46 Screw assembly 50 slot die 52 Slot outlet 60 Roller belt mechanism 62 Roller assembly member 64 Conveyor Belt 70 Metal Roll 72 Metal plate 100 Positive electrode slurry material 110 Composite layer 120 Dopamine Layer 130 PVDF layers 160 ceramic particles 200 molten material 321 Material supply port 322 Material outlet 323 Heating mechanism

Claims

1. A structure for manufacturing a positive electrode plate to which a positive electrode slurry layer formed by a positive electrode slurry material is attached, the positive electrode plate comprising a positive electrode substrate and the positive electrode slurry layer attached to the positive electrode substrate, the positive electrode slurry layer being composed of a plurality of positive electrode slurry materials, the plurality of positive electrode slurry materials being solid at room temperature, and such slurry-form positive electrode slurries being independently manufactured, the positive electrode substrate and the plurality of positive electrode slurry materials may be manufactured separately, and the plurality of positive electrode slurry materials being in a solid form without containing a solvent, have a long shelf life, and the structure is A raw material tank for containing a plurality of cathode slurry materials, Each of the positive electrode slurry materials 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 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 are in a molten state, the entire positive electrode slurry material has viscosity, and the PVDF or PVDF-HFP is attached 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 positive electrode slurry, the plurality of conductive agents being at least one selected from the group consisting of carbon nanotubes, nanoscale amorphous carbon, and graphene; a lithium salt used to slide molecular chains within the polymer material and enhance ion conduction ability; a plurality of ceramic particles used to guide lithium ions and having high ionic conductivity for lithium ions, the plurality of ceramic particles being guided by the plurality of ceramic particles dispersed so as to prevent a situation in which lithium ions abnormally accumulate in the positive electrode slurry and a side reaction with the positive electrode slurry occurs; 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; a raw material tank in which the plurality of positive electrode slurry materials have a solid material structure at room temperature, and when heated to a specific temperature, the PEO in the plurality of positive electrode slurry materials melts to form a molten state, thereby allowing the PEO to adhere to the positive electrode substrate, thereby forming the positive electrode plate; an injection molding machine used to receive and heat the plurality of cathode slurry materials in the raw material tank, wherein the plurality of cathode slurry materials becomes a molten material, the injection molding machine including a raw material receiving tank for receiving the plurality of cathode slurry materials from the raw material tank, the raw material receiving tank having a material supply port and a material discharge port located below the raw material receiving tank, the raw material receiving tank having a heating mechanism for heating the plurality of cathode slurry materials, and the molten material being formed from the plurality of cathode slurry materials; a supply pipe connected to the injection molding machine for receiving and stirring the molten material delivered from the injection molding machine, the supply pipe including a material inlet and a material outlet; a slot die connected to the material discharge port of the supply pipe for receiving the uniformly mixed molten material, the slot die having a slot discharge port formed at a front end thereof, from which the molten material is injected to a mechanism behind by a slot die coating method; a roller belt mechanism positioned at the slot discharge port and used to transport a metal plate, the metal plate being the positive electrode substrate, the metal plate being used to receive the molten material injected from the slot discharge port, the molten material being applied to the positive electrode substrate, and the positive electrode plate being formed; The positive electrode plate of the positive electrode slurry layer formed by the plurality of positive electrode slurry materials does not need to undergo baking and rolling compaction steps, and therefore, the material in the plurality of positive electrode slurry materials is not affected by the baking and rolling compaction stress and is not crushed.

2. 2. The structure for manufacturing a positive electrode plate to which a positive electrode slurry layer formed from a positive electrode slurry material according to claim 1 is attached, wherein the plurality of positive electrode particles are one or more selected from the group consisting of lithium cobalt oxide particles, single-crystal or polycrystalline nickel-cobalt-manganese particles, and lithium iron manganese phosphate or lithium iron phosphate particles.

3. 2. The structure for manufacturing a positive electrode plate having a positive electrode slurry layer formed from the positive electrode slurry material according to claim 1, wherein the lithium salt is selected from the group consisting of PDDA-TFSI and Py14-TFSI.

4. 2. The structure for manufacturing a positive electrode plate for depositing a positive electrode slurry layer formed from the positive electrode slurry material 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.

5. 2. The structure for manufacturing a positive electrode plate to which a positive electrode slurry layer formed from the positive electrode slurry material of claim 1 is attached, wherein the temperature of the raw material receiving tank is in the range of 50°C to 240°C, and this temperature range allows the PEO to melt.

6. 2. The structure for manufacturing a positive electrode plate having a positive electrode slurry layer formed from a positive electrode slurry material according to claim 1, wherein a screw assembly member used for stirring the molten material that has entered the supply pipe is disposed within the supply pipe, so that the molten material is in a uniformly mixed state, and the uniformly mixed molten material is discharged from the material discharge port of the supply pipe.

7. 7. The structure for manufacturing a positive electrode plate for depositing a positive electrode slurry layer formed from a positive electrode slurry material according to claim 6, wherein the screw assembly member is selected from a single screw or a twin screw.

8. the roller belt mechanism includes a roller assembly including a plurality of rollers, the roller assembly having a conveyor belt wound therearound, the rollers within the roller assembly being interlockable to move the conveyor belt; 2. The structure for manufacturing a positive electrode plate to which a positive electrode slurry layer formed from a positive electrode slurry material is attached according to claim 1, wherein the metal plate is unwound by a metal roll, 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.

9. 2. The method for manufacturing a positive electrode plate according to claim 1, wherein the specific temperature is in the range of 50°C to 240°C.

10. a composite layer is further coated on the outer surface of each of the ceramic particles, the composite layer comprising a dopamine layer coating the outer surface of the ceramic particle and a PVDF layer coating the outer surface of the dopamine layer, the PVDF layer being made of a PVDF material, and the dopamine layer does not completely cover the outer surface of the ceramic particle, thereby exposing a small portion of the surface of the ceramic particle, so that the PVDF layer is partially in contact with the surface of the ceramic particle and partially in contact with the dopamine layer; 2. The structure for manufacturing a positive electrode plate to which a positive electrode slurry layer formed from the positive electrode slurry material of claim 1 is attached, wherein dopamine is hydrophobic and can prevent side reactions between the ceramic particles and an external solvent; partial fluorine ions in the PVDF material ionically bond with corresponding lithium ions on the surface of the ceramic particles to form lithium fluoride; and partial fluorine ions in the PVDF material hydrogen bond with nitrogen ions of polydopamine molecules in the dopamine layer to form the PVDF layer covering the outer surface of the dopamine layer.

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