High-efficiency solid-state or solid-state-like battery structure

Abstract

The invention relates to a high-efficiency solid-state or solid-state-like battery structure, which comprises a negative electrode, a first electrode and a second electrode, the plurality of SiC particles with tin layers are distributed in the negative electrode slurry, and the plurality of LATP coarse particles are mixed in the negative electrode slurry and play a role in guiding lithium ions; wherein a plurality of LATP fine particles are attached to the outer surface of the tin layer of each SiC particle with the tin layer. The positive electrode comprises positive electrode slurry; a plurality of LLZO, LATP and LiNO coarse particles are mixed in the positive electrode slurry to play a role in guiding lithium ions, so that the lithium ions are uniformly distributed in a channel in the positive electrode. A plurality of positive electrode particles are distributed in the positive electrode slurry, and a plurality of LLZO, LATP and LiNO fine particles are attached to the surface of each positive electrode particle, so that lithium ions can be guided in a larger capacity, and circulation of the lithium ions is increased. The dielectric film is positioned between the negative electrode and the positive electrode, one side of the dielectric film is connected with the negative electrode, and the other side of the dielectric film is connected with the positive electrode.

Description

Technical Field

[0001] The present invention relates to the technical field of solid-state and quasi-solid-state batteries, and in particular to a high-performance solid-state or quasi-solid-state battery structure. Background Art

[0002] like Figure 2 As shown, a solid-state or quasi-solid-state battery structure in the prior art consists of a negative electrode 10', a positive electrode 20', and a dielectric film 30' located between the positive electrode 20' and the negative electrode 10'. The negative electrode 10' is filled with a negative electrode slurry 12', which serves as a binder. The negative electrode 10' also includes a plurality of silicon carbide particles 15' (SiC particles with a tin layer), which are distributed within the negative electrode slurry 12'. The outer surfaces of the SiC particles with a tin layer accommodate and distribute lithium ions. However, the SiC particles with a tin layer react negatively with some of the lithium ions, reducing the number of available lithium ions and, in the long term, reducing the overall battery's capacitance. The positive electrode 20' is filled with a positive electrode slurry 22', which serves as a binder. The positive electrode 20' also includes a plurality of positive electrode particles 26', which are distributed within the positive electrode slurry 22'. The chemical molecules within the positive electrode slurry 22' and the positive electrode particles 26' react negatively with the lithium ions, thereby consuming available lithium ions. In addition, the dielectric film 30 ′ of the solid-state battery is located between the negative electrode 10 ′ and the positive electrode 20 ′, serving as a separator and a connection between the negative electrode 10 ′ and the positive electrode 20 ′.

[0003] In traditional solid-state or quasi-solid-state electrolytes, the positive and negative electrode slurries serve to guide lithium ions. However, the positive and negative electrode slurries in the existing technology easily produce negative reactions with the lithium ions remaining in the positive and negative electrode slurries, thereby easily causing dead lithium or lithium consumption. This is an irreversible chemical reaction, resulting in a decreasing number of lithium ions in the battery, and the battery's storage capacity is also reduced.

[0004] Furthermore, the lithium storage capacity of the multiple positive and negative electrode particles in the positive and negative electrode slurries is poor, so the lithium ions in the positive and negative electrode slurries tend to accumulate on the surface of the positive and negative electrode particles. At this time, these lithium ions will produce negative reactions with the molecules in the positive and negative electrode slurries, which will reduce the capacitance of the entire positive and negative electrodes over long-term use. The negative reaction also leads to a decrease in the number of lithium ions, thereby reducing the battery's storage capacity.

[0005] Therefore, the present invention hopes to propose a new solid-state or quasi-solid-state battery structure to solve the above-mentioned defects in the prior art. Summary of the Invention

[0006] Therefore, the present invention aims to address the aforementioned problems in the prior art. The present invention proposes a high-performance solid-state or quasi-solid-state battery structure, wherein coarse LATP particles are added to the negative electrode slurry to guide lithium ions. This is primarily because LATP has a higher ionic conductivity for lithium ions than a mixed slurry of SBR and CMC. This allows for a uniform distribution of lithium ions within the negative electrode, preventing abnormal accumulation of lithium ions within the negative electrode slurry and negative reactions with the mixed slurry of SBR, CMC, etc. within the negative electrode slurry. Furthermore, a plurality of fine LATP particles are attached to the surfaces of multiple silicon carbide particles (SiC particles with a tin layer). Because these LATP particles have a much higher capacity for accommodating and distributing lithium ions than SiC particles with a tin layer, and do not negatively react with lithium ions, the effective capacity of the entire negative electrode during use is increased, while reducing the loss of lithium ions due to negative reactions. Therefore, the present invention can increase the battery's overall storage capacity while extending its service life. In addition, the positive electrode incorporates multiple coarse LLZO particles, multiple coarse LATP particles, and multiple coarse LiNO particles to guide lithium ions. Furthermore, multiple fine LLZO particles, multiple fine LATP particles, and multiple fine LiNO particles are attached to the surfaces of the multiple positive electrode particles. The positive electrode design of the present invention provides a better channel for lithium ions, thus significantly improving overall battery performance.

[0007] To achieve the above objectives, the present invention proposes a high-performance solid-state or quasi-solid-state battery structure, comprising: a negative electrode, the negative electrode comprising: a negative electrode substrate, which is a carrier material for supporting the negative electrode; a negative electrode slurry layer coated on the negative electrode substrate, which comprises: a negative electrode slurry; a plurality of tin-coated silicon carbide particles, i.e., SiC particles with tin layers, distributed in the negative electrode slurry, the outer surface of the SiC particles with tin layers is coated with a tin layer; wherein the thickness of the tin layer is between 1 and 20 mm; a plurality of LATP coarse particles, mixed in the negative electrode slurry, play a role in guiding lithium ions; thereby, the lithium ions are uniformly distributed in channels within the negative electrode, reducing the generation of negative reactions; wherein a plurality of LATP fine particles are attached to the outer surface of the tin layer of each SiC particle with tin layers; because the ability of the LATP fine particles to accommodate and evenly flow lithium ions is much higher than that of the SiC particles with tin layers, and they will not produce negative reactions with lithium ions; and can increase the effective capacitance of the entire negative electrode during use; a positive electrode a cathode; and a dielectric film located between the anode and the cathode, connected to the anode on one side and to the cathode on the other side, wherein the anode slurry layer contacts the dielectric film; wherein the anode comprises: a cathode substrate, which is a carrier material for supporting the cathode; a cathode slurry layer coated on the cathode substrate, wherein the cathode slurry layer contacts the dielectric film, the cathode slurry layer comprising: a cathode slurry; a plurality of LLZO coarse particles, a plurality of LATP coarse particles, and a plurality of LiNO coarse particles, mixed in the cathode slurry, which serve to guide lithium ions, thereby allowing lithium ions to present a uniform channel distribution inside the cathode, thereby preventing abnormal accumulation of lithium ions in the cathode slurry and negative reaction with the cathode slurry; and a plurality of cathode particles distributed in the cathode slurry, wherein a plurality of LLZO fine particles, a plurality of LATP fine particles, and a plurality of LiNO fine particles are attached to the surface of each cathode particle, and the LLZO fine particles have a strong lithium ion guiding ability. The fine particles account for 2 to 5 wt% of all positive electrode particles; the coarse particles account for 2 to 5 wt% of all positive electrode slurry; and the total weight of the positive electrode particles accounts for 90-97 wt% of the positive electrode slurry layer.

[0008] Furthermore, the negative electrode slurry is a mixture of SBR, CMC and a conductive agent selected from CNT and Super-P.

[0009] Furthermore, the particle sizes of the LATP fine particles, the LLZO fine particles, and the LiNO fine particles are less than 200 nanometers.

[0010] Furthermore, the size of each silicon carbide particle is 15±20% micrometers.

[0011] Furthermore, the dielectric film is divided into five layers, the first layer being closest to the positive electrode and the fifth layer being closest to the negative electrode, with the second, third, and fourth layers being arranged in sequence between the first and fifth layers; the materials of the first and fifth layers are a mixture of PVDF, PVDF-HFP, PVA, and PMMA, wherein the proportion of PVA is less than 0.2%, and the fifth layer has elasticity and is used to fill the gap between the positive and negative electrodes and provide adhesion; the material of the second layer is LLZO plus aluminum oxide; the material of the fourth layer is LATP plus aluminum oxide (Al2O3); and the material of the third layer is selected from PE or PP.

[0012] Furthermore, in the positive electrode slurry, the particle size of the plurality of LLZO coarse particles is between 0.05 and 0.1 microns; the particle size of the plurality of LATP coarse particles is between 0.5 and 3 microns; and the particle size of the plurality of LiNO coarse particles is between 0.2 and 1 micron.

[0013] Furthermore, in the second layer, the weight ratio of the LLZO: the aluminum oxide is 1:1 to 99:1;

[0014] The material of the fourth layer is LATP plus aluminum oxide, wherein the weight ratio of LATP to aluminum oxide is 1:1 to 99:1;

[0015] The thickness of the PE or PP in the third layer is 12-17 μm.

[0016] Furthermore, in the negative electrode, the proportion of the LATP fine particles accounts for 0.3 to 0.8 wt % of the entire negative electrode slurry; the proportion of the LATP coarse particles accounts for 0.3 to 0.8 wt % of the entire negative electrode slurry.

[0017] Furthermore, in the negative electrode, the LATP fine particles account for 0.3 to 0.8 wt % of each SiC particle with a tin layer; and the SiC particles with a tin layer account for 88-96 wt % of the negative electrode slurry.

[0018] The beneficial effects of the present invention are:

[0019] The outer surface of the tin-coated SiC particles of the present invention is attached with multiple LATP fine particles. Because the LATP fine particles have a much higher capacity for accommodating and distributing lithium ions than SiC particles with a tin layer, and are less susceptible to negative reactions with lithium ions, the overall capacity of the tin-coated SiC particles with the LATP fine particles is much higher than that of SiC particles with a tin layer alone. Therefore, the design of the present invention allows the negative electrode to accommodate and distribute more lithium ions. This increases the effective capacity of the entire negative electrode during use and reduces lithium ion loss due to negative reactions, which would otherwise reduce the overall battery's capacitance. Furthermore, when lithium ions enter the negative electrode, they are buffered by the tin-coated SiC particles with the LATP fine particles of the present invention. Therefore, the present invention can increase the battery's overall storage capacity while extending its service life.

[0020] When a large number of lithium ions enter the negative electrode, the tin-coated SiC particles containing the fine LATP particles can accommodate and distribute the large amount of lithium ions. The coarse LATP particles mixed in the negative electrode slurry can buffer and accommodate the lithium ions, accelerating their flow rate and guiding their direction before slowly expelling them. Therefore, the entire negative electrode acts as a buffer for lithium ions, passivating the negative electrode's negative reactions and thus extending the overall battery life.

[0021] The features and advantages of the present invention may be further understood from the following description, which should be read with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Showing an embodiment of the present invention;

[0023] Figure 2 Shows the structure of existing solid or solid-like electrolytes;

[0024] Figure 3 A diagram showing the structure of SiC particles of the present invention;

[0025] Figure 4 A diagram showing the structure of the positive electrode particles of the present invention.

[0026] Description of reference numerals:

[0027] 10. Negative electrode;

[0028] 11. Negative electrode substrate;

[0029] 12. Anode slurry;

[0030] 13. Negative electrode slurry layer;

[0031] 14. LATP coarse particles;

[0032] 15. SiC particles;

[0033] 16. LATP fine particles;

[0034] 17. Tin layer;

[0035] 20. Positive electrode;

[0036] 21. Positive electrode substrate;

[0037] 22. Cathode slurry;

[0038] 23. Positive electrode slurry layer;

[0039] 24. LLZO coarse particles;

[0040] 26. Positive electrode particles;

[0041] 27. LATP coarse particles;

[0042] 28. LLZO fine particles;

[0043] 29. LiNO coarse particles;

[0044] 30. LATP fine particles;

[0045] 31. LiNO fine particles;

[0046] 32. First floor;

[0047] 33. Dielectric films;

[0048] 34. Second layer;

[0049] 35. The third layer;

[0050] 36. Fourth floor;

[0051] 38. The fifth floor. DETAILED DESCRIPTION

[0052] The structural composition of the present invention, as well as the effects and advantages it can produce, is now described in detail below with reference to a preferred embodiment of the present invention with reference to the drawings.

[0053] Please refer to Figure 1 、 Figure 3 and Figure 4 As shown, the high-performance solid-state or quasi-solid-state battery structure of the present invention includes the following elements:

[0054] A negative electrode 10, comprising:

[0055] A negative electrode substrate 11 is a carrier for supporting the material of the negative electrode 10;

[0056] A negative electrode slurry layer 13 is coated on the negative electrode substrate 11. The negative electrode slurry layer 13 includes a negative electrode slurry 12 as a binder. The negative electrode slurry 12 is a mixture of SBR (Styrene Butadiene Rubber), CMC (Carboxymethyl Cellulose), and a conductive agent (CNT (Carbon Nanotube) or Super-P (conductive carbon). The solvent used in the preparation of the negative electrode slurry 12 is water.

[0057] The negative electrode slurry layer 13 further includes:

[0058] Multiple LATP coarse particles 14 (NASICON structure, Li 1+x A l x T i 2-x (PO4)3), with a particle size between 1 and 3 microns, is mixed in the negative electrode slurry 12 to guide lithium ions. This is mainly because the ionic conductivity of the LATP material for lithium ions is higher than that of mixed slurries such as SBR and CMC. Therefore, when lithium ions pass through the negative electrode 10, they can be guided by the dispersed LATP coarse particles 14, thereby dispersing the channels for lithium ions. As a result, the lithium ions can be evenly distributed in the channels inside the negative electrode 10, reducing the occurrence of negative reactions. This negative reaction will reduce the lithium ions that can circulate in the battery, leading to battery failure. A small number of negative electrode slurries 12 also contain LiPAA (lithium polyacrylate) and NaPAA (sodium polyacrylate).

[0059] A plurality of SiC particles 15 coated with tin layer 17 (SiC particles 15 with tin layer) (such as Figure 3 ), the tin-coated SiC particles 15 are distributed within the negative electrode slurry 12 and have a size of 15 microns ± 20%. The outer surfaces of the tin-coated SiC particles 15 are coated with a tin layer 17. A plurality of LATP fine particles 16 are attached to the outer surface of the tin layer 17 of each tin-coated SiC particle 15, wherein the LATP fine particles 16 are less than 200 nanometers in size. The outer surfaces of the tin-coated SiC particles 15 accommodate and distribute lithium ions and form a SEI film (Solid Electrolyte Interphase), causing chemical molecules within the negative electrode slurry 12 to react negatively with some lithium ions, thereby reducing the number of usable lithium ions. The thickness of the tin layer 17 ranges from 1 to 20 mm.

[0060] In the present invention, the outer surface of the tin-coated SiC particles 15 is attached with a plurality of LATP fine particles 16. Because the LATP fine particles 16 have a much higher capacity for accommodating and distributing lithium ions than the tin-coated SiC particles 15, and are less susceptible to negative reactions with lithium ions, the overall capacity of the tin-coated SiC particles 15, including the LATP fine particles 16, is much higher than that of the tin-coated SiC particles 15 alone. Therefore, the design of the present invention enables the negative electrode 10 to accommodate and distribute a greater amount of lithium ions. This increases the effective capacity of the negative electrode 10 during use and reduces lithium ion loss due to negative reactions, which can reduce the overall battery's capacitance over time. Furthermore, when lithium ions enter the negative electrode 10, they are buffered by the tin-coated SiC particles 15, including the LATP fine particles 16. Therefore, the present invention can increase the battery's overall storage capacity and extend its service life.

[0061] When a large number of lithium ions enter the negative electrode 10, the tin-coated SiC particles 15 containing the LATP fine particles 16 can accommodate and evenly distribute the large amount of lithium ions. The multiple LATP coarse particles 14 mixed in the negative electrode slurry 12 can buffer and accommodate the lithium ions, accelerating their flow rate and directing their direction before slowly expelling them. Therefore, the entire negative electrode 10 acts as a buffer for lithium ions, passivating the negative reactions of the negative electrode 10 and thus extending the overall battery life.

[0062] The coarse LATP particles 14, the fine LATP particles 16, and the tin-coated SiC particles 15 of the present invention all have a crystalline structure. Therefore, after the LATP fine particles 16 are compositely coated with the tin-coated SiC particles 15, the LATP crystal structure protects the SiC within, ensuring overall stability and preventing it from easily releasing or dissociating. This broadens the effective operating voltage range of the entire battery.

[0063] In the present invention, the LATP fine particles 16 preferably account for 0.3 to 0.8 wt% of the total negative electrode slurry 12, while the LATP coarse particles 14 account for 0.3 to 0.8 wt% of the total negative electrode slurry 12. The LATP fine particles 16 account for 0.3 to 0.8 wt% of each tin-coated SiC particle 15, and the tin-coated SiC particles 15 account for 88-96% of the total negative electrode slurry 12.

[0064] A positive electrode 20 comprising:

[0065] A positive electrode substrate 21 is a carrier for supporting the material of the positive electrode 20;

[0066] A positive electrode slurry layer 23 is coated on the positive electrode substrate 21, wherein the positive electrode slurry layer 23 includes: a positive electrode slurry 22 containing a binder, wherein the binder is a mixture of PVDF (Polyvinylidene Fluoride, polyvinylidene fluoride) and PVDF-HFP (polyvinylidene fluoride-hexafluoropropylene), and the solvent used in the preparation of the positive electrode slurry 22 is NMP (Methylpyrrolidone, N-methylpyrrolidone). The positive electrode slurry 22 includes: PVDF, PVDF-HFP, a conductive agent (CNT, superP, KS8), LNO (lithium nickel-rich oxide, Li2NiO2) and LFO (lithium ferrite-rich oxide, Li5FeO4) (wherein the amount of LNO and LFO is less than 0.2wt%).

[0067] The positive electrode slurry layer 23 further includes:

[0068] A plurality of LLZO coarse particles 24 (lithium lanthanum zirconium oxide), with a particle size ranging from 0.05 to 0.1 micrometers, are mixed in the positive electrode slurry 22 to guide lithium ions.

[0069] A plurality of LATP coarse particles 27 , with a particle size ranging from 0.5 to 3 μm, are mixed in the positive electrode slurry 22 to guide lithium ions.

[0070] A plurality of LiNO coarse particles 29 (lithium nickel oxide), with a particle size ranging from 0.2 to 1 micron, are mixed in the positive electrode slurry 22 to guide lithium ions.

[0071] The weight ratio of the LLZO coarse particles 24 : the LATP coarse particles 27 : the LiNO coarse particles 29 is between 3:2:0.5 and 4:1:0.1, that is, 3 to 4 (between 3 and 4): 2 to 1 (between 2 and 1): 0.5 to 0.1 (between 0.5 and 0.1).

[0072] This is primarily because the ionic conductivity of LLZO, LATP, and LiNO materials for lithium ions is higher than that of the PVDF mixed slurry. Therefore, when lithium ions pass through the positive electrode 20, they are guided by the dispersed LLZO coarse particles 24, which disperse the lithium ion channels. This allows the lithium ions to be evenly distributed within the positive electrode 20, preventing abnormal accumulation of lithium ions within the positive electrode slurry 22 and negative reactions with the PVDF within the positive electrode slurry 22.

[0073] A plurality of positive electrode particles 26 are provided. The material of the positive electrode particles 26 can be selected from NCM (lithium nickel cobalt manganese oxide), LCO (lithium cobalt oxide), LMFP (lithium manganese iron phosphate), or a mixture of two thereof. The positive electrode particles 26 are distributed within the positive electrode slurry 22. When NCM and LMFP are mixed, the ratio of NCM to LMFP is between 4:1 and 3:1 (wt%). When LCO and LMFP are mixed, the ratio of LCO to LMFP is between 4:1 and 3:1 (wt%). The NCM particles are 3 to 8 microns in size; the LCO particles are 10 to 15 microns in size; and the LMFP particles are less than 3 microns in size.

[0074] Attached to the surface of each positive electrode particle 26 are a plurality of LLZO fine particles 28, a plurality of LATP fine particles 30, and a plurality of LiNO fine particles 31. Each LLZO fine particle 28, LATP fine particle 30, and LiNO fine particle 31 has a particle size of less than 200 nanometers. Typically, the outer surface of the positive electrode particle 26 accommodates and distributes lithium ions, causing a negative reaction between chemical molecules in the positive electrode slurry and the lithium ions, thereby consuming available lithium ions. In the present invention, the LLZO fine particles 28, LATP fine particles 30, and LiNO fine particles 31 attached to the outer surface of the positive electrode particle 26 can conduct lithium ions with greater capacity, thereby increasing lithium ion flow.

[0075] In the present invention, the LLZO fine particles 28, LATP fine particles 30, and LiNO fine particles 31 preferably account for 2 to 5 wt% of the total positive electrode particles 26. The LLZO coarse particles 24, LATP coarse particles 27, and LiNO coarse particles 29 preferably account for 2 to 5 wt% of the total positive electrode particles 26. The total weight of the positive electrode particles 26 accounts for 90-97 wt% of the total weight of the positive electrode slurry layer 23.

[0076] like Figure 1As shown, the present invention further includes a dielectric film 33 positioned between the negative electrode 10 and the positive electrode 20, with one side connected to the negative electrode and the other side connected to the positive electrode. In the present invention, the dielectric film 33 is divided into five layers: a first layer 32 closest to the positive electrode 20, a fifth layer 38 closest to the negative electrode 10, and a second layer 34, a third layer 35, and a fourth layer 36, respectively, disposed between the first layer 32 and the fifth layer 38. The first layer 32 and the fifth layer 38 are made of a mixture of PVDF, PVDF-HFP, PVA (polyvinyl alcohol), and PMMA (methyl methacrylate), with the PVA content being less than 0.2 wt%. Other materials may be added as needed. The PVA has good elasticity, thus filling the gap between the negative electrode 10 and the positive electrode 20 and providing adhesion, thereby enhancing the stability of the entire structure. The material of the second layer 34 is LLZO plus aluminum oxide (Al2O3). The role of the aluminum oxide is to avoid oxidation reactions and achieve better thermal stability, wherein the weight ratio of the LLZO to the aluminum oxide is 1:1 to 99:1. The material of the fourth layer 36 is LATP plus aluminum oxide. The role of the aluminum oxide is to avoid oxidation reactions and achieve better thermal stability, wherein the weight ratio of the LATP to the aluminum oxide is 1:1 to 99:1. The material of the third layer 35 is PE or PP, etc., wherein the thickness of the PE or PP is 12-17um. The negative electrode slurry layer 13 and the positive electrode slurry layer 23 contact the dielectric film 33.

[0077] The advantage of the present invention is that the addition of coarse LATP particles to the negative electrode slurry can act as a guide for lithium ions. This is primarily because LATP has a higher ionic conductivity for lithium ions than a mixed slurry of SBR and CMC. This allows for a uniform distribution of lithium ions within the negative electrode, preventing abnormal accumulation of lithium ions within the negative electrode slurry and negative reactions with the mixed slurry of SBR, CMC, etc. Furthermore, multiple fine LATP particles are attached to the surfaces of multiple silicon carbide particles (SiC particles with a tin layer). Because these LATP particles have a much higher capacity for accommodating and distributing lithium ions than SiC particles with a tin layer and do not react negatively with lithium ions, they increase the effective capacity of the entire negative electrode during use and reduce the loss of lithium ions due to negative reactions. Therefore, the present invention can increase the battery's overall storage capacity while extending its service life. Furthermore, the addition of coarse LLZO particles to the positive electrode acts as a guide for lithium ions. Furthermore, multiple fine LLZO particles are attached to the surfaces of the multiple positive electrode particles. These LLZO particles have the ability to accommodate and distribute lithium ions. Typically, the outer surface of the positive electrode particles accommodates and distributes lithium ions, generating a negative reaction with them, thus reducing the number of lithium ions available for interaction. Therefore, when lithium ions pass through the positive electrode, they are guided by the dispersed LLZO fine particles, thus dispersing the channels through which they flow. Therefore, the positive electrode design of the present invention provides a better channel for lithium ions, and thus, the application of the present invention's structure can significantly improve overall battery performance.

[0078] The above detailed description is a specific description of a feasible embodiment of the present invention, but this embodiment is not intended to limit the patent scope of the present invention. Any equivalent implementation or modification that does not depart from the technical spirit of the present invention should fall within the patent scope of the present invention.

Claims

1. A high-performance solid-state or quasi-solid-state battery structure, characterized in that: include: a negative electrode, the negative electrode comprising: A negative electrode substrate, which is a carrier for supporting the negative electrode material; A negative electrode slurry layer is coated on the negative electrode substrate, comprising: negative electrode slurry; A plurality of tin-coated silicon carbide particles, i.e., tin-coated SiC particles, are distributed in the negative electrode slurry, wherein the outer surfaces of the tin-coated SiC particles are coated with a tin layer; wherein the thickness of the tin layer is between 1 and 20 mm; Multiple LATP coarse particles are mixed in the negative electrode slurry to guide lithium ions; wherein a plurality of LATP fine particles are attached to the outer surface of the tin layer of each SiC particle having a tin layer; a positive electrode; and a dielectric film located between the negative electrode and the positive electrode, with one side connected to the negative electrode and the other side connected to the positive electrode, wherein the negative electrode slurry layer contacts the dielectric film; The positive electrode comprises: A positive electrode substrate, which is a carrier for supporting the positive electrode material; A positive electrode slurry layer is coated on the positive electrode substrate, wherein the positive electrode slurry layer contacts the dielectric film, and the positive electrode slurry layer comprises: cathode slurry; A plurality of LLZO coarse particles, a plurality of LATP coarse particles, and a plurality of LiNO coarse particles are mixed in the positive electrode slurry; and a plurality of positive electrode particles are distributed in the positive electrode slurry, wherein a plurality of LLZO fine particles, a plurality of LATP fine particles, and a plurality of LiNO fine particles are attached to the surface of each positive electrode particle; The proportion of the LLZO, LATP and LiNO fine particles accounts for 2 to 5 wt% of the total positive electrode particles; and the proportion of the LLZO, LATP and LiNO coarse particles accounts for 2 to 5 wt% of the total positive electrode slurry; the total weight of the positive electrode particles accounts for 90-97 wt% of the positive electrode slurry layer.

2. The high-performance solid-state or quasi-solid-state battery structure according to claim 1, wherein: The negative electrode slurry is a mixture of SBR, CMC and a conductive agent selected from CNT and Super-P.

3. The high-performance solid-state or quasi-solid-state battery structure according to claim 1, wherein: The particle sizes of the LATP fine particles, the LLZO fine particles, and the LiNO fine particles are less than 200 nanometers.

4. The high-performance solid-state or quasi-solid-state battery structure according to claim 1, wherein: The size of each silicon carbide particle is 15±20% micrometers.

5. The high-performance solid-state or quasi-solid-state battery structure according to claim 1, wherein: The dielectric film is divided into five layers. The first layer is closest to the positive electrode and the fifth layer is closest to the negative electrode. The second, third, and fourth layers are arranged in sequence between the first and fifth layers. The materials of the first and fifth layers are a mixture of PVDF, PVDF-HFP, PVA, and PMMA, in which the proportion of PVA is less than 0.2%. The fifth layer has elasticity and is used to fill the gap between the positive and negative electrodes and provide adhesion. The material of the second layer is LLZO plus aluminum oxide. The material of the fourth layer is LATP plus aluminum oxide. The material of the third layer is selected from PE or PP.

6. The high-performance solid-state or quasi-solid-state battery structure according to claim 1, wherein: In the positive electrode slurry, the particle size of the plurality of LLZO coarse particles is between 0.05 and 0.1 micrometers; the particle size of the plurality of LATP coarse particles is between 0.5 and 3 micrometers; and the particle size of the plurality of LiNO coarse particles is between 0.2 and 1 micrometers.

7. The high-performance solid-state or quasi-solid-state battery structure according to claim 5, wherein: In the second layer, the weight ratio of the LLZO to the aluminum oxide is 1:1 to 99:1; The material of the fourth layer is LATP plus aluminum oxide, wherein the weight ratio of LATP to aluminum oxide is 1:1 to 99:1; The thickness of the PE or PP in the third layer is 12-17 μm.

8. The high-performance solid-state or quasi-solid-state battery structure according to claim 1, wherein: In the negative electrode, the proportion of the LATP fine particles accounts for 0.3 to 0.8 wt % of the entire negative electrode slurry; the proportion of the LATP coarse particles accounts for 0.3 to 0.8 wt % of the entire negative electrode slurry.

9. The high-performance solid-state or quasi-solid-state battery structure according to claim 1, wherein: In the negative electrode, the LATP fine particles account for 0.3 to 0.8 wt% of each SiC particle with a tin layer; and the SiC particles with a tin layer account for 88-96% of the negative electrode slurry.

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