A recycling and processing device for ultra-thin lithium metal

Abstract

This invention provides a recycling and processing device for ultra-thin lithium metal. The device includes a reaction chamber with a hinged door structure at the top for opening and inserting materials. Around the hinged door structure, the top of the reaction chamber also features an air inlet, an atomizing water inlet, an exhaust outlet, and an explosion-proof hole. Sealing valves are installed at the air inlet, the atomizing water inlet, and the exhaust outlet. A water outlet assembly is located at the bottom of the reaction chamber. This invention, through its overall design, enables the green and harmless treatment of waste ultra-thin lithium metal and the recycling and reuse of the lithium element. Utilizing chemical principles, it controls reaction conditions and speed to ensure safety during the reaction process. Simultaneously, it treats the generated waste gas to produce water molecules, significantly increasing the processing speed of waste materials and reducing safety hazards.

Description

Technical Field

[0001] This utility model belongs to the field of lithium metal recycling technology, and relates to a recycling device for ultra-thin lithium metal. Background Technology

[0002] With the rapid development of the new energy industry, lithium metal batteries have been widely used in electric vehicles, portable electronic devices, and other fields due to their high energy density and excellent electrochemical performance. In particular, ultrathin lithium metal, as a negative electrode material, can significantly improve battery energy density and has become a key research direction for next-generation high-energy-density batteries. However, ultrathin lithium metal faces a technical bottleneck in practical applications: difficulties in recycling and processing, which seriously restricts its industrialization process and sustainable development.

[0003] The manufacturing process of lithium metal batteries generates a large amount of ultrathin lithium metal waste, including stamping scraps, defective products, and discarded electrodes after cycle testing. This waste is characterized by its extremely thin thickness, high chemical reactivity, and susceptibility to oxidation and deterioration, posing significant challenges to recycling. Traditional lithium metal recycling methods are primarily designed for bulk or relatively thick lithium metal (greater than 100 μm in thickness), typically employing smelting or chemical methods. Smelting requires heating the lithium metal to its melting point above 180°C, but ultrathin lithium metal reacts readily with nitrogen and oxygen in the air at high temperatures, resulting in low recovery rates (usually less than 60%) and the generation of large amounts of toxic fumes and residue. While chemical methods can be carried out at room temperature, they require highly corrosive organic solvents, posing serious safety hazards during processing and making it difficult to effectively separate the solid electrolyte interface film on the surface of ultrathin lithium metal.

[0004] Existing technology discloses a lithium metal recycling device that recovers lithium metal through mechanical crushing and screening in a vacuum environment. However, this method is mainly designed for thick lithium metal waste and has significant shortcomings when processing ultrathin lithium metal: on the one hand, ultrathin lithium metal is prone to severe plastic deformation during mechanical crushing, leading to lithium powder agglomeration; on the other hand, this method cannot effectively remove the oxide layer and solid electrolyte interface film formed on the surface of ultrathin lithium metal, and the purity of the recovered product is difficult to meet the requirements for battery-grade reuse.

[0005] The prior art discloses an apparatus for recovering lithium metal by electrolytic refining. Although this method can obtain lithium with high purity, it requires dissolving lithium metal in molten salt electrolyte, which consumes a lot of energy and has complex equipment. It is particularly unsuitable for processing ultrathin lithium metal with a thickness of less than 100 μm.

[0006] Existing technologies include room-temperature static treatment of lithium metal waste, but this process is time-consuming (requiring weeks to months), prone to producing odors and hydrogen accumulation, and poses an explosion risk. Incineration releases toxic gases (such as Li2O dust), polluting the environment, and does not allow for the recovery of lithium resources. In short, there is currently a lack of safe, efficient, and environmentally friendly technologies for the harmless and resource-based treatment of lithium metal.

[0007] Therefore, there is an urgent need to design a recycling and processing device for ultrathin lithium metal to overcome the shortcomings of existing technologies and meet the needs of practical applications. Utility Model Content

[0008] To address the shortcomings of existing technologies, the purpose of this invention is to provide a recycling and processing device for ultra-thin lithium metal. Through the overall design of the recycling and processing device, this invention enables the green and harmless treatment of waste ultra-thin lithium metal and the recycling and reuse of the lithium metal element. Utilizing chemical principles, the device controls reaction conditions and speed to ensure safety during the reaction process. Simultaneously, it treats the generated waste gas to produce water molecules, significantly improving the processing speed of waste materials and reducing safety hazards.

[0009] To achieve this objective, the present invention adopts the following technical solution:

[0010] This utility model provides a recycling device for ultra-thin lithium metal. The recycling device includes a reaction chamber, and a hinged door structure is provided on the top of the reaction chamber for opening and inserting materials.

[0011] The top of the reaction chamber is provided with an air inlet, an atomizing water inlet, an exhaust outlet and an explosion-proof hole in the circumference of the hinge door structure. A sealing valve is provided at the air inlet, the atomizing water inlet and the exhaust outlet, and a water outlet assembly is provided at the bottom of the reaction chamber.

[0012] In this invention, through the overall design of the recycling and processing device, waste ultrathin lithium metal can be treated in a green and harmless manner, and the lithium metal element can be recycled and reused. The whole system utilizes chemical principles to control the reaction conditions and speed, ensuring safety during the reaction process. At the same time, the generated waste gas is treated to produce water molecules, which greatly improves the processing speed of waste materials and reduces safety hazards.

[0013] It should be noted that due to the high chemical reactivity of lithium metal, its storage requires strict environmental control. Waste ultrathin lithium metal cannot be stored in a controlled environment for extended periods and needs to be rendered harmless as quickly as possible to reduce its activity and eliminate safety hazards. The recycling and processing device in this invention can safely and quickly process waste lithium metal (ultrathin lithium metal), producing harmless lithium carbonate, lithium hydroxide, etc., without causing environmental pollution. The waste generated from the reaction can be recycled back to the metal refinery for reuse, achieving a recycling rate of over 99.9%. Compared to existing methods with processing times exceeding 30 days, which cannot effectively recover lithium, are flammable, explosive, and cause severe pollution, this invention's processing time is within two hours, effectively recovering lithium, and operating in an inert environment throughout, ensuring safety and efficiency with zero waste gas and zero solid waste emissions.

[0014] It should be noted that the size and material of the hinge door structure in this utility model are not specifically limited, and those skilled in the art can make adaptive adjustments according to the actual situation; in particular, after the hinge door structure is opened, it is convenient for the operator to put lithium metal into the inner cavity to wait for further reaction.

[0015] It should be noted that the air inlet in this invention is used to fill the reaction chamber with inert gas to prevent lithium metal from coming into contact with oxygen and causing an explosion. The material and capacity of the inert gas can be adapted by those skilled in the art according to the actual situation.

[0016] It should be noted that the size and location of the explosion-proof hole are not specifically limited in this utility model, and those skilled in the art can make adaptive adjustments according to the actual situation.

[0017] As a preferred technical solution of this utility model, the reaction chamber has a double-layer structure, which includes an inner cavity and an outer cavity extending from the inside to the outside, and the inner cavity is used to place materials.

[0018] Furthermore, the top of the inner cavity is connected to the interior of the outer cavity, and the bottom of the inner cavity is fixedly connected to the bottom of the outer cavity.

[0019] It should be noted that the size and material of the reaction chamber in this utility model are not specifically limited, and those skilled in the art can make adaptive adjustments according to the actual situation. The material of the reaction chamber (inner chamber and outer chamber) can be 316L stainless steel. The double-layer structure is conducive to compacting the contact range between lithium metal and water, making the reaction more complete and less likely to introduce impurities. The inner layer contains lithium metal, and the reaction is protected by an inert gas filled in the outer layer. The inert gas can be argon gas with a purity of 99.99%.

[0020] As a preferred technical solution of this utility model, a water outlet is provided through the bottom of the inner cavity and the bottom of the outer cavity. A planar opening and closing structure is provided at the water outlet. A traction rope is connected to one side of the planar opening and closing structure. The planar opening and closing structure is used to open and drain water after the material reaction is completed.

[0021] It should be noted that the planar opening and closing structure in this utility model can be a louvered structure, which is opened by an external traction rope and drained through the water outlet at that location. During the reaction, the planar opening and closing structure is in a closed state, and its circumferential edge can be sealed to prevent the reactants from flowing out.

[0022] Furthermore, the water outlet is connected to the water outlet assembly via a pipe on the side facing away from the inner cavity.

[0023] As a preferred technical solution of this utility model, the volume ratio of the inner cavity to the outer cavity is 1:(1.5~3), such as 1:1.5, 1:2, 1:2.5, 1:3, etc., but it is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0024] In this invention, the volume ratio of the inner cavity to the outer cavity is 1:(1.5~3), which is more conducive to a more complete chemical reaction between lithium metal and water mist, resulting in a higher lithium recovery rate.

[0025] As a preferred technical solution of this utility model, the atomizing inlet is connected to an atomizer via a pipeline, and a flow meter is installed on the pipeline.

[0026] Furthermore, an atomizing nozzle is provided on the side of the atomizing inlet facing the inner cavity. The atomizing nozzle is used to inject atomized deionized water into the inner cavity, and the injection flow rate of the atomizing nozzle is 1mL / min to 10mL / min, such as 1mL / min, 2mL / min, 3mL / min, 4mL / min, 5mL / min, 6mL / min, 7mL / min, 8mL / min, 9mL / min, 10mL / min, etc., but is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0027] It should be noted that the present invention introduces an atomized water injection mode, which can further control the reaction rate between lithium metal and atomized water and avoid the safety hazards caused by violent exothermic reaction. The molar ratio of water to metal can be 0.8 to 1.2:1.

[0028] As a preferred technical solution of this utility model, a temperature sensor is provided on the outer wall of the inner cavity.

[0029] It should be noted that this utility model does not impose any special limitations on the model or location of the temperature sensor, and those skilled in the art can make adaptive adjustments according to the actual situation.

[0030] As a preferred technical solution of this utility model, a sealing ring is provided around the edge of the hinge door structure.

[0031] As a preferred technical solution of this utility model, a flame arrester and a pressure reducing valve are provided at the exhaust port, and a condensation device and a hydrogen combustion device are connected to the exhaust port in sequence through the exhaust pipe.

[0032] It should be noted that the condensation device and hydrogen combustion device in this utility model can convert H2 into H2O, achieving zero emissions, and further resource utilization of hydrogen.

[0033] As a preferred technical solution of this utility model, the water outlet component includes a water outlet pipe and a water outlet faucet disposed at the end of the water outlet pipe away from the reaction chamber.

[0034] As a preferred technical solution of this utility model, the thickness of the ultrathin lithium metal is 1μm to 100μm, such as 1μm, 10μm, 20μm, 30μm, 40μm, 50μm, 60μm, 70μm, 80μm, 90μm, 100μm, etc., but is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0035] For example, the method of using the ultrathin lithium metal recycling device of this invention includes:

[0036] 10g of ultrathin lithium foil (1μm thick) is placed into the inner cavity through a hinged door structure, and argon gas is introduced to replace the air until O2 < 0.1%. Deionized water is injected into the inner cavity at a rate of 5mL / min through an atomizing nozzle to maintain the reaction temperature at 25-40℃. A portion of the generated aqueous solution flows out through the drain hole and the generated hydrogen flows out through the exhaust port. After being treated by a condenser and a hydrogen combustion device, it is completely oxidized (the heat of combustion can be used to purify the waste liquid). A box containing Li2CO3 can be placed below the hydrogen combustion device to collect the waste liquid. The waste liquid is heated with H2 (waste liquid purification) to finally obtain 29.8g of Li2CO3 (ICP-MS detection shows a lithium recovery rate of 98%). The switching of the entire component and the reaction flow rate can be automated with the control system.

[0037] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0038] In this invention, through the overall design of the recycling and processing device, waste ultrathin lithium metal can be treated in a green and harmless manner, and the lithium metal element can be recycled and reused. The whole system utilizes chemical principles to control the reaction conditions and speed, ensuring safety during the reaction process. At the same time, the generated waste gas is treated to produce water molecules, which greatly improves the processing speed of waste materials and reduces safety hazards. Attached Figure Description

[0039] Figure 1 A schematic diagram of the structure of a recycling and processing device for ultrathin lithium metal provided for a specific embodiment of this utility model;

[0040] Among them, 1-reaction chamber; 2-air inlet; 3-atomizing water inlet; 4-exhaust port; 5-explosion-proof hole; 6-water outlet assembly. Detailed Implementation

[0041] It should be understood that in the description of this utility model, the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0042] It should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0043] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0044] In one specific embodiment, the present invention provides a device for recycling and processing ultrathin lithium metal, such as... Figure 1As shown, the recycling and processing device includes a reaction chamber 1. The top of the reaction chamber 1 is provided with a hinged door structure for opening and inserting materials. The top of the reaction chamber 1 is also provided with an air inlet 2, an atomizing water inlet 3, an exhaust outlet 4 and an explosion-proof hole 5 around the hinged door structure. Sealing valves are provided at the air inlet 2, the atomizing water inlet 3 and the exhaust outlet 4. A water outlet assembly 6 is provided at the bottom of the reaction chamber 1.

[0045] It should be noted that due to the high chemical reactivity of lithium metal, its storage requires strict environmental control. Waste ultrathin lithium metal cannot be stored in a controlled environment for extended periods and needs to be rendered harmless as quickly as possible to reduce its activity and eliminate safety hazards. The recycling and processing device in this invention can safely and quickly process waste lithium metal (ultrathin lithium metal), producing harmless lithium carbonate, lithium hydroxide, etc., without causing environmental pollution. The waste generated from the reaction can be recycled back to the metal refinery for reuse, achieving a recycling rate of over 99.9%. Compared to existing methods with processing times exceeding 30 days, which cannot effectively recover lithium, are flammable, explosive, and cause severe pollution, this invention's processing time is within two hours, effectively recovering lithium, and operating in an inert environment throughout, ensuring safety and efficiency with zero waste gas and zero solid waste emissions.

[0046] It should be noted that the size and material of the hinge door structure in this utility model are not specifically limited, and those skilled in the art can make adaptive adjustments according to the actual situation; in particular, after the hinge door structure is opened, it is convenient for the operator to put lithium metal into the inner cavity to wait for further reaction.

[0047] It should be noted that the air inlet 2 in this utility model is used to fill the reaction chamber 1 with inert gas to prevent lithium metal from coming into contact with oxygen and causing an explosion. The material and capacity of the inert gas can be adapted by those skilled in the art according to the actual situation.

[0048] It should be noted that the size and location of the explosion-proof hole 5 are not specifically limited in this utility model, and those skilled in the art can make adaptive adjustments according to the actual situation.

[0049] In one embodiment, the reaction chamber 1 has a double-layer structure, which includes an inner cavity and an outer cavity extending from the inside out, with the inner cavity used to hold materials.

[0050] In one embodiment, the top of the inner cavity is connected to the interior of the outer cavity, and the bottom of the inner cavity is fixedly connected to the bottom of the outer cavity.

[0051] It should be noted that the size and material of the reaction chamber 1 in this utility model are not specifically limited, and those skilled in the art can make adaptive adjustments according to the actual situation; wherein, the material of the reaction chamber 1 (inner chamber and outer chamber) can be 316L stainless steel, and the double-layer structure is designed to facilitate the compact contact range between lithium metal and water, so that the reaction is more complete and less likely to introduce impurities. The inner layer is filled with lithium metal, and the reaction is protected by an inert gas filled in the outer layer. The inert gas can be argon gas with a purity of 99.99%.

[0052] In one embodiment, a water outlet is provided through the bottom of the inner cavity and the bottom of the outer cavity. A planar opening and closing structure is provided at the water outlet. A traction rope is connected to one side of the planar opening and closing structure. The planar opening and closing structure is used to open and drain water after the material reaction is completed.

[0053] It should be noted that the planar opening and closing structure in this utility model can be a louvered structure, which is opened by an external traction rope and drained through the water outlet at that location. During the reaction, the planar opening and closing structure is in a closed state, and its circumferential edge can be sealed to prevent the reactants from flowing out.

[0054] In one embodiment, the water outlet is connected to the water outlet assembly 6 via a pipe on the side of the water outlet facing away from the inner cavity.

[0055] In one embodiment, the volume ratio of the inner cavity to the outer cavity is 1:(1.5 to 3), such as 1:1.5, 1:2, 1:2.5, 1:3, etc., but is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0056] In this invention, the volume ratio of the inner cavity to the outer cavity is 1:(1.5~3), which is more conducive to a more complete chemical reaction between lithium metal and water mist, resulting in a higher lithium recovery rate.

[0057] In one embodiment, the atomizing inlet 3 is connected to an atomizer via a pipeline, and a flow meter is installed on the pipeline.

[0058] In one embodiment, an atomizing nozzle is provided on the side of the atomizing inlet 3 facing the inner cavity. The atomizing nozzle is used to inject atomized deionized water into the inner cavity, and the injection flow rate of the atomizing nozzle is 1mL / min to 10mL / min, such as 1mL / min, 2mL / min, 3mL / min, 4mL / min, 5mL / min, 6mL / min, 7mL / min, 8mL / min, 9mL / min, 10mL / min, etc., but is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0059] It should be noted that the introduction of atomized water injection mode in this utility model can further control the reaction rate between metallic lithium and atomized water, and avoid the safety hazards caused by violent exothermic reaction process.

[0060] In one embodiment, a temperature sensor is provided on the outer wall of the inner cavity.

[0061] It should be noted that this utility model does not impose any special limitations on the model or location of the temperature sensor, and those skilled in the art can make adaptive adjustments according to the actual situation.

[0062] In one embodiment, a sealing ring is provided circumferentially around the edge of the hinge door structure.

[0063] In one embodiment, a flame arrester and a pressure reducing valve are provided at the exhaust port 4, and a condenser and a hydrogen combustion device are connected to the exhaust port 4 in sequence through an exhaust pipe.

[0064] It should be noted that the condensation device and hydrogen combustion device in this utility model can convert H2 into H2O, achieving zero emissions, and further resource utilization of hydrogen.

[0065] In one embodiment, the water outlet assembly 6 includes a water outlet pipe and a water outlet tap located at the end of the water outlet pipe away from the reaction chamber 1.

[0066] In one embodiment, the thickness of the ultrathin lithium metal is 1 μm to 100 μm, such as 1 μm, 10 μm, 20 μm, 30 μm, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, 100 μm, etc., but is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0067] For example, the method of using the ultrathin lithium metal recycling device of this invention includes:

[0068] 10g of ultrathin lithium foil (1μm thick) is placed into the inner cavity through a hinged door structure, and argon gas is introduced to replace the air until O2 < 0.1%. Deionized water is injected into the inner cavity at a rate of 5mL / min through an atomizing nozzle to maintain the reaction temperature at 25-40℃. A portion of the generated aqueous solution flows out through the drain hole and the drain assembly, while the generated hydrogen gas flows out through exhaust port 4. After being processed by a condenser and a hydrogen combustion device, it is completely oxidized (the heat from the combustion can be used to purify the waste liquid). A box containing Li2CO3 can be placed below the hydrogen combustion device to collect the waste liquid, which is heated with H2 (waste liquid purification). Finally, 29.8g of Li2CO3 is obtained (ICP-MS detection shows a lithium recovery rate of 98%). The switching of the entire component and the reaction flow rate can be automated with the help of a control system.

[0069] Example 1

[0070] This embodiment provides a device for recycling and processing ultrathin lithium metal, wherein:

[0071] The recycling and processing device includes a reaction chamber 1. The top of the reaction chamber 1 is equipped with a hinged door structure, which is used to open and insert an ultra-thin lithium metal with a thickness of 7μm. The top of the reaction chamber 1 is also equipped with an air inlet 2, an atomizing water inlet 3, an exhaust port 4, and an explosion-proof hole 5 around the hinged door structure. Sealing valves are installed at the air inlet 2, the atomizing water inlet 3, and the exhaust port 4. A water outlet assembly 6 is installed at the bottom of the reaction chamber 1.

[0072] The reaction chamber 1 has a double-layer structure, consisting of an inner chamber and an outer chamber extending from the inside out. The inner chamber is used to hold materials. The top of the inner chamber is connected to the interior of the outer chamber, and the bottom of the inner chamber is fixedly connected to the bottom of the outer chamber. A water outlet is provided through the bottom of both the inner and outer chambers. A planar opening and closing structure is provided at the water outlet, with a traction rope connected to one side of the planar opening and closing structure. This structure is used to open and drain water after the material reaction is complete. The pipe on the side of the water outlet facing away from the inner chamber is connected to the water outlet assembly 6. The volume ratio of the inner chamber to the outer chamber is 1:2.

[0073] The atomizing inlet 3 is connected to an atomizer via a pipeline, and a flow meter is installed on the pipeline. An atomizing nozzle is installed on the side of the atomizing inlet 3 facing the inner cavity. The atomizing nozzle is used to inject atomized deionized water into the inner cavity, and the injection flow rate of the atomizing nozzle is 5 mL / min.

[0074] A temperature sensor is installed on the outer wall of the inner cavity, a sealing ring is installed around the edge of the hinge door structure, a flame arrester and a pressure reducing valve are installed at the exhaust port 4, and a condensation device and a hydrogen combustion device are connected to the exhaust port 4 in sequence through the exhaust pipe.

[0075] The water outlet assembly 6 includes a water outlet pipe and a water outlet tap located at the end of the water outlet pipe away from the reaction chamber 1.

[0076] In summary, this utility model, through the overall design of the recycling and processing device, enables the green and harmless treatment of waste ultrathin lithium metal and the recycling and reuse of the lithium metal element; it utilizes chemical principles to control reaction conditions and speed, ensuring safety during the reaction process, while treating the generated waste gas to produce water molecules, greatly improving the processing speed of waste materials and reducing safety hazards.

[0077] The above description is only a specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model fall within the protection and disclosure scope of the present utility model.

Claims

1. A device for recycling and processing ultrathin lithium metal, characterized in that, The recycling and processing device includes a reaction chamber, and a hinged door structure is provided on the top of the reaction chamber for opening and inserting materials; The top of the reaction chamber is provided with an air inlet, an atomizing water inlet, an exhaust outlet and an explosion-proof hole in the circumference of the hinge door structure. A sealing valve is provided at the air inlet, the atomizing water inlet and the exhaust outlet, and a water outlet assembly is provided at the bottom of the reaction chamber.

2. The recycling and processing device for ultra-thin lithium metal according to claim 1, characterized in that, The reaction chamber has a double-layer structure, which includes an inner cavity and an outer cavity extending from the inside out. The inner cavity is used to hold materials. The top of the inner cavity is connected to the interior of the outer cavity, and the bottom of the inner cavity is fixedly connected to the bottom of the outer cavity.

3. The recycling and processing device for ultra-thin lithium metal according to claim 2, characterized in that, A water outlet is provided through the bottom of the inner cavity and the bottom of the outer cavity. A planar opening and closing structure is provided at the water outlet. A traction rope is connected to one side of the planar opening and closing structure. The planar opening and closing structure is used to open and drain water after the material reaction is completed. The water outlet is connected to the water outlet assembly via a pipe on the side facing away from the inner cavity.

4. The apparatus for recycling ultrathin lithium metal according to claim 2 or 3, characterized in that, The volume ratio of the inner cavity to the outer cavity is 1:(1.5~3).

5. The recycling and processing device for ultra-thin lithium metal according to claim 2, characterized in that, The atomizing inlet is connected to an atomizer via a pipeline, and a flow meter is installed on the pipeline. An atomizing nozzle is provided on the side of the atomizing inlet facing the inner cavity. The atomizing nozzle is used to inject atomized deionized water into the inner cavity, and the injection flow rate of the atomizing nozzle is 1 mL / min to 10 mL / min.

6. The apparatus for recycling ultrathin lithium metal according to claim 2, characterized in that, A temperature sensor is installed on the outer wall of the inner cavity.

7. The apparatus for recycling ultrathin lithium metal according to claim 1, characterized in that, The hinge door structure is provided with a sealing ring around its perimeter.

8. The apparatus for recycling and processing ultrathin lithium metal according to claim 1, characterized in that, The exhaust port is equipped with a flame arrester and a pressure reducing valve, and the exhaust port is connected to a condenser and a hydrogen combustion device in sequence through an exhaust pipe.

9. The apparatus for recycling ultrathin lithium metal according to claim 1, characterized in that, The water outlet assembly includes a water outlet pipe and a water outlet tap located at the end of the water outlet pipe away from the reaction chamber.

10. The apparatus for recycling ultrathin lithium metal according to claim 1, characterized in that, The thickness of the ultrathin lithium metal is 1μm to 100μm.

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