High-temperature molten salt liquid metal air power supply
By using molten salt liquid electrolyte material in metal air power supply, the problems of insufficient output power and thermal failure of metal air power supply in high-temperature environments are solved, and long-term energy output in high-temperature and high-altitude environments are achieved.
Patent Information
- Application Number
- CN202421369858.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-17
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-06-17
AI Technical Summary
When metal air power supplies operate for a long time in a high-temperature environment, they are prone to insufficient output power and even thermal failure behavior. In addition, the existing technology has conducted less research on high-temperature and high-altitude harsh environments.
Design a high-temperature molten salt liquid metal air power supply, using molten metal salt to adsorb on glass fibers, forming an electrolyte material with excellent performance, and improving the high-temperature resistance of the battery.
This technology enables metal air batteries to work effectively in extreme environments, improves the battery's high temperature resistance, and ensures that they can still provide energy output for a long time in high temperature and high altitude environments.
Smart Images
Figure CN222896726U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of power supplies, and in particular relates to a high-temperature molten salt liquid metal air power supply. Background Art
[0002] At present, metal-air power sources are developing rapidly. Its biggest feature is its high energy density. Therefore, it is widely used in aerospace, computers, mobile communication equipment, robots and electric vehicles, and is also a battery form that needs to be vigorously developed in the future. However, metal-air power sources are prone to insufficient output power and even thermal runaway when they are operated for a long time in a high-temperature environment. However, there are few studies on metal-air power sources at high temperatures. Especially for harsh environments with high temperatures and high altitudes, the power source needs to be resistant to high temperatures, have high power and be able to be used for a long time. Therefore, it is of great significance to design a metal-air power source with a molten salt liquid electrolyte at high temperatures, which is different from the liquid-solid mixed electrolyte in the prior art. Summary of the invention
[0003] The utility model aims to provide a high-temperature molten salt liquid metal air power source, which can adapt to special environments such as harsh high temperature and high altitude environments.
[0004] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows: it includes a battery cell, a shell and a sealing cover, the shell is a cylindrical shell, the battery cell is arranged in the inner cavity of the battery shell, the shell and the sealing cover are fixedly connected, the sealing cover and the battery cell are interference fit, the inner cavity of the battery shell includes an air electrode layer, an electrolyte layer, and a metal electrode from the outside to the inside, the electrolyte layer includes a metal salt and glass fiber, the metal salt is selected from one or more of the following: halide salts, nitrates, sulfates and composite salts of halides, nitrates and sulfates, the glass fiber is a network cloth structure, the metal salt is in a molten state and adsorbed in the glass fiber, the upper end of the air electrode layer has an electrode terminal, the metal electrode has a wiring terminal, and the side wall of the battery shell is provided with a plurality of micropores for air to enter and react with the air electrode layer when the battery is working.
[0005] Furthermore, the air electrode layer is composed of a conductive substrate and a catalyst, wherein the conductive substrate has a pore structure, and catalyst particles are deposited in the pore structure of the conductive substrate.
[0006] Furthermore, the catalyst is selected from one or more of the following: transition metal oxides, hydroxides, nitrides, and carbides that are stable under high temperature conditions.
[0007] Furthermore, the material of the metal electrode is selected from the following: aluminum, magnesium, zinc, lithium, and sodium.
[0008] Furthermore, the battery housing and the sealing cover are made of high temperature resistant insulating materials.
[0009] Compared with the prior art, the electrolyte layer of the present application is a molten salt liquid at high temperature and a solid at room temperature. By using molten metal salt adsorbed on glass fiber, high-temperature molten salt is also an electrolyte material with excellent performance, which can effectively improve the high temperature resistance of metal batteries and enable metal batteries to adapt to extreme environments. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a cross-sectional schematic diagram of the high temperature power supply of the utility model;
[0011] Figure 2 This is a schematic diagram of the appearance of the high temperature power supply of the utility model;
[0012] Figure 3 This is a top view of the high temperature power supply of the utility model;
[0013] In the figure: 1. battery casing, 2. air electrode layer, 3. electrolyte layer, 4. sealing cover, 5. metal electrode, 6. electrode terminal, 7. micropore, 8. wiring terminal. DETAILED DESCRIPTION
[0014] The present invention is further described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. The terms such as "upper", "lower", "left", "right" and the like cited in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of the relative relationship shall also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.
[0015] like Figure 1 As shown, a high-temperature molten salt liquid metal air battery comprises a battery cell, a shell 1 and a sealing cover 4, wherein the shell 1 is a cylindrical shell, the battery cell is arranged in the inner cavity of the battery shell 1, the shell 1 and the sealing cover 4 are fixedly connected, the sealing cover 4 and the battery cell are interference fit, the inner cavity of the battery shell 1 comprises an air electrode layer 2, an electrolyte layer 3, and a metal electrode 4 from the outside to the inside, the electrolyte layer 3 comprises a metal salt and glass fiber, the glass fiber is a network cloth structure, the metal salt is in a molten state and adsorbed in the glass fiber, as shown in FIG. Figure 3 As shown, the air electrode layer 2 has an electrode terminal 6 at the top, and the metal electrode 5 has a lead-out terminal 8. Figure 2As shown, the side wall of the battery shell is provided with a plurality of micropores 7 for air to enter and react with the air electrode layer 2 when the battery is working. The air electrode layer 2 is composed of a conductive substrate and a catalyst, and the conductive substrate has a pore structure, and catalyst particles are deposited in the pore structure of the conductive substrate. The catalyst is selected from one or more of the following: transition metal oxides, hydroxides, nitrides, and carbides that are stable under high temperature conditions. The metal salt is selected from one or more of the following: halides, nitrates, sulfates, and composite salts of halides, nitrates, and sulfates. The material of the metal electrode 4 is selected from one of the following: aluminum, magnesium, zinc, lithium, and sodium. The battery shell 1 and the sealing cover 4 are high temperature resistant insulating materials. The present application is solid at room temperature and is a molten salt liquid under high temperature working environment.
[0016] Example:
[0017] The present embodiment provides a high-temperature molten salt liquid metal air battery inner core structure, the metal electrode 4 is an aluminum electrode, the high-temperature molten salt solution of the electrolyte layer 3 is an aluminum chloride solution, the molten aluminum chloride solution is adsorbed in the glass fiber, the catalyst of the air electrode layer 2 is spinel oxide, in this embodiment, cobalt manganese oxide with high energy density and good thermal stability is selected, the conductive substrate is a high-temperature resistant and conductive carbon cloth, cobalt manganese oxide particles are attached to the gaps of the carbon cloth, the metal electrode 5 is tightly wrapped around the electrolyte layer 3, the electrolyte layer 3 is tightly wrapped around the air electrode 2, and then loaded into the battery shell 1, the sealing cover 4 is fixed to the top of the battery shell 1 by screws, and the sealing cover 4 also presses and fixes the air electrode layer 2, the electrolyte layer 3, and the metal electrode 5 in the inner cavity of the shell 1.
[0018] The negative electrode of the aluminum-air power source in this embodiment is high-purity aluminum, which is continuously consumed when the battery is discharged to generate Al(OH)3 aluminum hydroxide; the positive electrode is an oxygen electrode, and oxygen in the outside air enters the battery through the micropores of the shell 1 to undergo an electrochemical reaction to generate hydroxide OH-; the negative electrode provides pure aluminum, and the positive electrode provides oxygen. The electrode reaction formula is as follows:
[0019] Negative electrode: (Al): 4Al-12e-=4Al3+
[0020] Positive electrode: (O2): 3O2+6H2O+12e-=12OH-
[0021] Overall reaction formula: 4Al+3O2+6H2O=4Al(OH)3↓.
[0022] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the protection scope of the present utility model patent application.
Claims
1. A high-temperature molten salt liquid metal air power source, comprising a battery cell, a shell and a sealing cover, characterized in that: The shell is a cylindrical shell, the battery cell is arranged in the inner cavity of the shell, the shell is fixedly connected to the sealing cover, the sealing cover and the battery cell are interference fit, the inner cavity of the shell includes an air electrode layer, an electrolyte layer, and a metal electrode from the outside to the inside, the electrolyte layer includes a metal salt and glass fiber, the metal salt is selected from the following: a halide salt, a nitrate, a sulfate, and a composite salt of a halide salt, a nitrate, and a sulfate, the glass fiber is a network cloth structure, the metal salt is in a molten state and adsorbed in the glass fiber, the upper end of the air electrode layer has an electrode terminal, the metal electrode has a wiring terminal, and the side wall of the shell is provided with a plurality of micropores for air to enter and react with the air electrode layer when the battery is working.
2. A high-temperature molten salt liquid metal air power source according to claim 1, characterized in that: The material of the metal electrode is selected from the following: aluminum, magnesium, zinc, lithium, and sodium.
3. A high-temperature molten salt liquid metal air power source according to claim 1, characterized in that: The shell and the sealing cover are made of high temperature resistant insulating materials.