Composite sodium-potassium electrode plate for button cell

Abstract

The utility model belongs to the technical field of electrode plates, in particular to a composite sodium-potassium electrode plate for a button cell, which comprises a sodium / potassium protective film, a sodium / potassium plate, a copper foil and a copper foil protective film, the copper foil is arranged on the bottom surface of the sodium / potassium plate, the sodium / potassium protective film is arranged on the surface of the sodium / potassium plate, and the copper foil protective film is arranged on the surface of the copper foil; the overall impedance is much smaller than that of the previous generation of electrode plates, and the peripheral side surfaces of the electrode plates are also wrapped by the protective films, so that sodium / potassium can be protected from being oxidized to a greater extent.

Description

Technical Field

[0001] This utility model belongs to the field of electrode sheet technology, specifically relating to a composite sodium-potassium electrode sheet for button batteries. Background Technology

[0002] Currently, the composite sodium / potassium electrode sheets used in the laboratory use aluminum foil as the substrate, with metallic sodium or metallic potassium coated on the substrate, and a protective film is applied to both sides of the electrode sheet. Using aluminum foil as the substrate will result in a higher internal resistance of the battery, which will affect the experimental data.

[0003] To address the aforementioned issues, this application proposes a composite sodium-potassium electrode sheet for button batteries. Utility Model Content

[0004] To address the problems mentioned in the background section, this invention provides a composite sodium-potassium electrode sheet for button batteries. The electrode sheet is also wrapped with a protective film on all four sides, which provides greater protection against oxidation of the sodium / potassium.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a composite sodium-potassium electrode sheet for button batteries, comprising a sodium / potassium protective film, a sodium / potassium sheet, a copper foil, and a copper foil protective film. The bottom surface of the sodium / potassium sheet is provided with a copper foil, the surface of the sodium / potassium sheet is provided with a sodium / potassium protective film, and the surface of the copper foil is provided with a copper foil protective film.

[0006] As a preferred embodiment of the composite sodium-potassium electrode sheet for a button battery according to this utility model, the copper foil protective film covers the surface of the copper foil until it adheres to the edge of the copper foil.

[0007] As a preferred embodiment of the composite sodium-potassium electrode sheet for a button battery according to this utility model, the sodium / potassium protective film covers the surface of the sodium / potassium sheet until it adheres to the edge of the sodium / potassium sheet.

[0008] In a preferred embodiment of the composite sodium-potassium electrode sheet for a button battery according to this invention, the edge of the copper foil protective film and the edge of the sodium / potassium protective film are bonded together.

[0009] Compared with the prior art, the beneficial effects of this utility model are: the overall impedance is much smaller than that of the previous generation of electrode sheets, and the sides of the electrode sheet are also wrapped with a protective film, which can better protect sodium / potassium from oxidation. Attached Figure Description

[0010] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0011] Figure 1This is a top view of the structure of this utility model;

[0012] Figure 2 This is a side sectional view of the structure of this utility model;

[0013] In the diagram: 1. Sodium / potassium protective film; 2. Sodium / potassium sheet; 3. Copper foil; 4. Copper foil protective film. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Example 1

[0016] like Figure 1 and Figure 2 As shown;

[0017] A composite sodium-potassium electrode sheet for a button battery includes a sodium / potassium protective film 1, a sodium / potassium sheet 2, a copper foil 3, and a copper foil protective film 4. The bottom surface of the sodium / potassium sheet 2 is provided with the copper foil 3, the surface of the sodium / potassium sheet 2 is provided with the sodium / potassium protective film 1, and the surface of the copper foil 3 is provided with the copper foil protective film 4.

[0018] In an optional embodiment, the copper foil protective film 4 covers the surface of the copper foil 3 until it adheres to the edge of the copper foil 3.

[0019] In an optional embodiment, a sodium / potassium protective film 1 is wrapped around the surface of the sodium / potassium sheet 2 until it adheres to the edge of the sodium / potassium sheet 2.

[0020] In an optional embodiment, the edges of the copper foil protective film 4 and the sodium / potassium protective film 1 are bonded together.

[0021] In this embodiment: because the copper foil protective film 4 covers the surface of the copper foil 3 until it adheres to the edge of the copper foil 3, and the sodium / potassium protective film 1 covers the surface of the sodium / potassium sheet 2 until it adheres to the edge of the sodium / potassium sheet 2, and because the edge of the copper foil protective film 4 and the edge of the sodium / potassium protective film 1 are adhered to each other, this sealing method can make the four sides of the sodium / potassium sheet 2 also wrapped by the copper foil protective film 4 and the sodium / potassium protective film 1, which can protect the sodium / potassium sheet 2 from oxidation to a greater extent.

[0022] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A composite sodium-potassium electrode sheet for a coin cell, characterized by: The application relates to a sodium / potassium protection film (1), a sodium / potassium sheet (2), a copper foil (3) and a copper foil protection film (4), the bottom surface of the sodium / potassium sheet (2) is provided with the copper foil (3), the surface of the sodium / potassium sheet (2) is provided with the sodium / potassium protection film (1), the surface of the copper foil (3) is provided with the copper foil protection film (4); the copper foil protection film (4) is wrapped on the surface of the copper foil (3) and is attached to the edge of the copper foil (3); the sodium / potassium protection film (1) is wrapped on the surface of the sodium / potassium sheet (2) and is attached to the edge of the sodium / potassium sheet (2); the edge of the copper foil protection film (4) is attached to the edge of the sodium / potassium protection film (1).

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