Manganese capture efficient power battery

Abstract

Compared with the prior art, a positive plate and a negative plate of the manganese capture efficient power battery are used for storing and releasing lithium ions, a non-woven fabric-based solid electrolyte layer is used for ion transmission, an organic phosphate layer is used for capturing manganese ions and enhancing the stability of the battery, and a conductive carbon layer is used for rapid transmission of electrons; wherein the positive plate, the non-woven fabric-based solid electrolyte layer, the organic phosphate layer, the conductive carbon layer and the negative plate are stacked in sequence, and through the structural design, the performance of the battery is greatly optimized.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a high-efficiency power battery for manganese capture. Background Technology

[0002] In the current field of battery technology, especially driven by the demand for high energy density and high power applications, improving the lithium-ion conduction efficiency of batteries, preventing the dissolution of manganese ions in manganese-rich cathode materials, and enhancing the kinetic performance of batteries under high-rate charge-discharge conditions have become critical technical challenges that urgently need to be addressed. These challenges not only affect the charge-discharge efficiency and cycle stability of batteries, but also directly relate to battery safety and lifespan.

[0003] Therefore, there is an urgent need for a high-efficiency manganese capture power battery to solve the above problems. Utility Model Content

[0004] In view of this, this utility model proposes a high-efficiency manganese capture power battery. Through innovative battery structure design and material application, it improves battery performance and safety, meeting the market demand for high-performance batteries. The technical solution of this utility model is as follows:

[0005] This utility model proposes a high-efficiency power battery for manganese capture, the specific structure of which is as follows:

[0006] The positive electrode is used to store and release lithium ions, providing energy density.

[0007] A non-woven fabric-based solid electrolyte layer, on the side closest to the positive electrode, is used for ion transport.

[0008] An organophosphate layer, located on the side adjacent to the nonwoven-based solid electrolyte layer, is used to capture manganese ions.

[0009] A conductive carbon layer, located on the side adjacent to the organophosphate layer, is used for rapid electron transport.

[0010] The negative electrode, the side closest to the conductive carbon layer, is used to store and release lithium ions.

[0011] Specifically, the positive electrode, the non-woven fabric-based solid electrolyte layer, the organic phosphate layer, the conductive carbon layer, and the negative electrode are stacked in sequence.

[0012] Specifically, the nonwoven fabric-based solid electrolyte layer includes a nonwoven fabric and a solid electrolyte. The solid electrolyte is attached to the nonwoven fabric, and some of the solid electrolyte is mixed with the nonwoven fabric, while some of the solid electrolyte is above the interface of the nonwoven fabric.

[0013] Specifically, the solid electrolyte is pressed into the nonwoven fabric using a hot-pressing process.

[0014] Specifically, the active material of the positive electrode is a manganese-rich positive electrode material.

[0015] Specifically, the organophosphate layer includes LiMnPO4, Li3V2(PO4)3, NaMnPO4, KFePO4, KVPO4F, and organophosphate complexes.

[0016] Specifically, the conductive carbon layer material includes carbon black, graphene, carbon nanotubes, pyrolytic carbon, conductive carbon fibers, and multi-level carbon structures.

[0017] The advantages of this utility model are as follows:

[0018] 1. This invention optimizes the contact area between the solid electrolyte and the nonwoven fabric through a hot-pressing process, which significantly improves the lithium-ion conductivity. This means the battery can transfer charge more quickly, improving overall battery performance.

[0019] 2. The organophosphate layer in this invention can effectively capture manganese ions within the battery, preventing their dissolution. This greatly enhances the battery's cycle stability, extends its lifespan, and also improves its safety performance, reducing risks during use.

[0020] 3. This invention improves electron transport and lithium-ion diffusion kinetics within the battery by adding a conductive carbon layer. This allows the battery to withstand higher rates during charging and discharging, enhancing its rapid charging and discharging capabilities and meeting high-power requirements.

[0021] 4. This utility model adopts a multi-layer structure design, which not only improves the overall performance of the battery but also enhances its mechanical stability. The multi-layer structure can effectively disperse stress and prevent structural damage to the battery during use.

[0022] 5. The multi-layered material in this invention helps to better manage battery heat. Effective thermal management can prevent battery overheating, improve battery safety and stability, and maintain long-term battery operation in a high-performance state. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one embodiment of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific part, respectively.

[0025] Figure 1 This is a schematic diagram of an embodiment of the present utility model.

[0026] The meanings of the reference numerals in the above figures are as follows:

[0027] 1. Positive electrode plate;

[0028] 2. Non-woven fabric-based solid electrolyte layer;

[0029] 3. Organic phosphate layer;

[0030] 4. Conductive carbon layer;

[0031] 5. Negative electrode plate. Detailed Implementation

[0032] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments and accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0033] Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used in the detailed description is for the purpose of describing particular embodiments only and is not intended to limit the invention; the terms “comprising” and “having” and any variations thereof in the specification, claims and foregoing description of the invention are intended to cover non-exclusive inclusion.

[0034] In the description of the specific embodiments of this utility model, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this utility model, "multiple" means two or more, unless otherwise explicitly defined.

[0035] In this invention, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this invention can be combined with other embodiments.

[0036] In the description of this utility model embodiment, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this utility model, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0037] Throughout this invention, numerical values ​​represent approximate measurements or limits of a range to cover minute deviations from a given value, as well as embodiments having approximately the mentioned value and embodiments having the exact mentioned value. Except for the working examples provided at the end of the detailed description, all numerical values ​​of parameters, quantities, or conditions in the appended claims should be understood to be modified in all cases by the term “about,” regardless of whether “about” actually appears before the numerical value. “About” indicates that the stated numerical value allows for some minute inaccuracy that is somewhat close to the exact value of the value; approximately or reasonably close to the value; almost. If the inaccuracy provided by “about” is not otherwise understood in this common sense in the art, then “about” as used in this invention at least indicates a variation that can be produced by common methods of measuring and using such parameters. For example, “about” may include a variation of less than or equal to 5%, optionally less than or equal to 4%, optionally less than or equal to 3%, optionally less than or equal to 2%, optionally less than or equal to 1%, optionally less than or equal to 0.5%, and in some respects, optionally less than or equal to 0.1%.

[0038] Additionally, the disclosure of the range includes the disclosure of all values ​​across the entire range and the disclosure of further subdivided ranges, including the endpoints and subranges given for these ranges.

[0039] The embodiments of the present invention will be described in more detail below through examples. It should be noted that the embodiments of the present invention are not limited to these examples.

[0040] In the current field of battery technology, especially driven by the demand for high energy density and high power applications, improving the lithium-ion conduction efficiency of batteries, preventing the dissolution of manganese ions in manganese-rich cathode materials, and enhancing the kinetic performance of batteries under high-rate charge-discharge conditions have become critical technical challenges that urgently need to be addressed. These challenges not only affect the charge-discharge efficiency and cycle stability of batteries, but also directly relate to battery safety and lifespan.

[0041] Therefore, there is an urgent need for a high-efficiency manganese capture power battery to solve the above problems.

[0042] In one specific embodiment, such as Figure 1 As shown, a high-efficiency manganese capture power battery has the following specific structure:

[0043] Positive electrode 1 is used to store and release lithium ions, providing energy density.

[0044] The non-woven fabric-based solid electrolyte layer 2, located on the side closest to the positive electrode 1, is used for ion transport.

[0045] The organic phosphate layer 3, located on the side adjacent to the nonwoven fabric-based solid electrolyte layer 2, is used to capture manganese ions.

[0046] The conductive carbon layer 4, located near the organophosphate layer 3, is used for rapid electron transport.

[0047] The negative electrode 5, located near the conductive carbon layer 4, is used to store and release lithium ions.

[0048] Specifically, the positive electrode 1, the non-woven fabric-based solid electrolyte layer 2, the organic phosphate layer 3, the conductive carbon layer 4, and the negative electrode 5 are stacked in sequence.

[0049] Specifically, the nonwoven fabric-based solid electrolyte layer 2 includes a nonwoven fabric and a solid electrolyte. The solid electrolyte is attached to the nonwoven fabric, with some of the solid electrolyte mixed with the nonwoven fabric and some of the solid electrolyte protruding above the nonwoven fabric interface. Specifically, the solid electrolyte solution is impregnated into the nonwoven fabric, followed by drying and hot rolling to ultimately prepare a dense, smooth solid electrolyte membrane. The hot-pressing process presses the solid electrolyte into the nonwoven fabric, enhancing the lithium-ion conduction path and interfacial contact.

[0050] Specifically, the solid electrolyte is pressed into the nonwoven fabric using a hot-pressing process.

[0051] Specifically, the active material of the positive electrode 1 is a manganese-rich positive electrode material.

[0052] Specifically, the organophosphate layer 3 includes LiMnPO4, Li3V2(PO4)3, NaMnPO4, KFePO4, KVPO4F, and organophosphate complexes.

[0053] In the above setup, there are no particular restrictions on the selection of the organophosphate layer 3, as long as it does not participate in the electrochemical reaction of the battery and maintains its function without impairment during battery charge-discharge cycles. When selecting a specific organophosphate material, its compatibility with the battery's positive electrode material and the feasibility of adding the organophosphate layer 3 need to be considered. Introducing the organophosphate layer 3 into the battery structure helps to capture manganese ions, prevent their dissolution, improve structural stability, suppress side reactions, enhance electronic and ion conductivity, and improve interfacial ion charge transfer efficiency, thereby improving the stability and safety of the battery.

[0054] Specifically, the conductive carbon layer 4 material includes carbon black, graphene, carbon nanotubes, pyrolytic carbon, conductive carbon fibers, and multi-level carbon structures. The purpose of the conductive carbon layer 4 material is to improve the battery's conductivity and kinetic performance, especially under high-rate charge and discharge conditions.

[0055] With the above settings, the battery structure disclosed in this application has the following advantages:

[0056] 1. The contact between the solid electrolyte and the nonwoven fabric was optimized through a hot-pressing process, which improved the lithium-ion conduction efficiency.

[0057] 2. The organic phosphate layer 3 effectively captures manganese ions and reduces their dissolution, thereby enhancing the cycle stability and safety of the battery.

[0058] 3. The addition of conductive carbon layer 4 improves the electron transport and lithium-ion diffusion dynamics of the battery, enabling the battery to withstand higher charge and discharge rates.

[0059] 4. This multi-layer structure design not only improves battery performance, but may also bring better mechanical stability and thermal management performance.

[0060] It should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency power battery for manganese capture, characterized in that, include: The positive electrode is used to store and release lithium ions, providing energy density; A non-woven fabric-based solid electrolyte layer, on the side closest to the positive electrode, is used for ion transport; An organophosphate layer, located on the side adjacent to the nonwoven-based solid electrolyte layer, is used to capture manganese ions; A conductive carbon layer, on the side adjacent to the organophosphate layer, is used for rapid electron transport; The negative electrode, the side closest to the conductive carbon layer, is used to store and release lithium ions; The positive electrode, the non-woven fabric-based solid electrolyte layer, the organic phosphate layer, and the conductive layer The carbon layer and the negative electrode are stacked in sequence.

2. The high-efficiency manganese capture power battery according to claim 1, characterized in that, The absence The fabric-based solid electrolyte layer comprises a nonwoven fabric and a solid electrolyte, wherein the solid electrolyte is attached to the nonwoven fabric. On the surface, some solid electrolytes mix with the nonwoven fabric, while some solid electrolytes protrude above the nonwoven fabric interface.

3. The high-efficiency manganese capture power battery according to claim 2, characterized in that, The solid The electrolyte is pressed into the nonwoven fabric using a hot-pressing process.

4. The high-efficiency manganese capture power battery according to claim 3, characterized in that, The positive The active material of the electrode is a manganese-rich cathode material.

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