CN221057457U - Sodium ion battery structure convenient to carry out quick aassessment to material performance - Google Patents
Sodium ion battery structure convenient to carry out quick aassessment to material performance Download PDFInfo
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- CN221057457U CN221057457U CN202321929164.3U CN202321929164U CN221057457U CN 221057457 U CN221057457 U CN 221057457U CN 202321929164 U CN202321929164 U CN 202321929164U CN 221057457 U CN221057457 U CN 221057457U
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- film
- ion battery
- sodium ion
- layer
- battery structure
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- 239000000463 material Substances 0.000 title claims abstract description 32
- 229910001415 sodium ion Inorganic materials 0.000 title claims abstract description 28
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 229910052751 metal Inorganic materials 0.000 claims abstract description 30
- 239000002184 metal Substances 0.000 claims abstract description 30
- 239000007773 negative electrode material Substances 0.000 claims abstract description 23
- 239000007774 positive electrode material Substances 0.000 claims abstract description 20
- 239000002131 composite material Substances 0.000 claims abstract description 17
- 239000010410 layer Substances 0.000 claims description 70
- 239000011888 foil Substances 0.000 claims description 14
- 229910052782 aluminium Inorganic materials 0.000 claims description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- -1 polypropylene Polymers 0.000 claims description 7
- 239000003575 carbonaceous material Substances 0.000 claims description 6
- 229920000098 polyolefin Polymers 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 239000011889 copper foil Substances 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 5
- 239000002356 single layer Substances 0.000 claims description 4
- 229920002799 BoPET Polymers 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 229920002678 cellulose Polymers 0.000 claims description 3
- 239000001913 cellulose Substances 0.000 claims description 3
- 229910021385 hard carbon Inorganic materials 0.000 claims description 3
- DCYOBGZUOMKFPA-UHFFFAOYSA-N iron(2+);iron(3+);octadecacyanide Chemical group [Fe+2].[Fe+2].[Fe+2].[Fe+3].[Fe+3].[Fe+3].[Fe+3].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-] DCYOBGZUOMKFPA-UHFFFAOYSA-N 0.000 claims description 3
- 239000002121 nanofiber Substances 0.000 claims description 3
- 239000004745 nonwoven fabric Substances 0.000 claims description 3
- 229920000447 polyanionic polymer Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 229960003351 prussian blue Drugs 0.000 claims description 3
- 239000013225 prussian blue Substances 0.000 claims description 3
- 229910021384 soft carbon Inorganic materials 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims 1
- 238000012360 testing method Methods 0.000 abstract description 15
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 5
- 238000011156 evaluation Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000010405 anode material Substances 0.000 description 2
- 239000010406 cathode material Substances 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 239000006183 anode active material Substances 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000006182 cathode active material Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012854 evaluation process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Secondary Cells (AREA)
Abstract
The utility model discloses a sodium ion battery structure convenient for rapidly evaluating material performance, which comprises a composite current collector, wherein the composite current collector comprises a microporous base film and metal film layers respectively arranged on two sides of the base film, one metal film layer is coated with a positive electrode material layer, and the other metal film layer is coated with a negative electrode material layer. The sodium ion battery structure convenient for rapidly evaluating the material performance has the characteristics of simple structure, accurate test and convenient manufacture.
Description
Technical Field
The utility model relates to the technical field of sodium ion batteries, in particular to a sodium ion battery structure convenient for rapidly evaluating material performance.
Background
In the development process of sodium ion batteries, in order to accurately design the batteries, the gram capacity of materials is usually required to be collected, and currently, a more conventional method is button battery test or full battery test.
First, button cells (also called half cells) are used, and this method usually uses sodium metal as a counter electrode, and sodium in the counter electrode is in an infinite excess relative to a working electrode, and there is a certain difference from an actual cell system, so that it is difficult to explain the performance of the working electrode in a full cell as a result of evaluation.
And secondly, full battery evaluation is adopted, but in the full battery rating process, the flow is long (the production time of the battery core is about 7-10 days), the materials are more (kilogram level), and the investment is large (water, electricity, gas and manpower), so that the efficiency of the evaluation process is low. .
Disclosure of utility model
The utility model aims to provide a sodium ion battery structure which is convenient for rapidly evaluating the material performance and has the characteristics of simple structure, accurate test and convenient manufacture.
The utility model can be realized by the following technical scheme:
The utility model discloses a sodium ion battery structure convenient for rapidly evaluating material performance, which comprises a composite current collector, wherein the composite current collector comprises a microporous base film and metal film layers respectively arranged on two sides of the base film, one metal film layer is coated with a positive electrode material layer, and the other metal film layer is coated with a negative electrode material layer.
Further, the metal film layer is a metal coating film plated on the surface of the base film or a metal foil material pasted on the base film. By arranging the metal coating or the metal foil, the stiffness of the base film is improved, the anode material and the cathode material are coated on the surface of the base film conveniently, the anode current collector and the cathode current collector in the full battery are effectively simulated, and the accuracy of the test is ensured.
Further, the metal coating is a copper film layer and/or an aluminum film layer, and the metal foil is copper foil or aluminum foil. The copper film, copper foil, aluminum film, aluminum foil have excellent conductivity by using copper or aluminum as the adhesion surface of the active material layer. The positive electrode current collector or the negative electrode current collector is better simulated.
Further, the base film is a microporous polyolefin film, a non-woven fabric film, a nanofiber film or a cellulose diaphragm, has good porosity, and forms a more convenient channel for sodium ion transmission.
Further, the microporous polyolefin film is a polypropylene film, a polyethylene film or a PET film, and has the advantages of wide sources, strong selectivity, low cost and certain stiffness.
Further, the sodium ion battery structure is round or square. The circular structure is adopted, so that the button cell can be conveniently embedded into the shell of the button cell to simulate the button cell; the square structure is adopted, and the aluminum shell or the aluminum plastic film package can be adopted, and the lamination type test can be carried out.
Further, the positive electrode material layer is a Prussian blue/white material layer, a layered oxide material layer and/or a polyanion material layer, so that the test requirements of different types of positive electrode materials are met.
Further, the negative electrode material layer is a hard carbon material layer, a soft carbon material layer or an alloy negative electrode material layer, so that the testing requirements of different types of negative electrode materials are met.
Further, the composite current collector, the positive electrode material layer and the negative electrode material layer are formed by stamping or cutting after rolling, and can be formed by one-time stamping or one-time cutting, so that the consistency of the shapes of the positive electrode material layer and the negative electrode material layer is ensured.
Further, the base film is a single-layer film or a composite multi-layer film, and can be selected according to practical requirements, such as a single-layer film with a thicker thickness or a multi-layer film with a thinner thickness.
The sodium ion battery structure convenient for rapidly evaluating the material performance has the following beneficial effects:
Firstly, the structure is simple, the positive electrode material layer and the negative electrode material layer are respectively arranged on two side surfaces of the composite current collector, the composite layered structure has good similarity with the button cell, and the subsequent manufacturing process is simplified;
Secondly, the test is accurate, the positive electrode material layer and the negative electrode material layer are respectively arranged on the two side surfaces of the composite fluid, and the positive electrode active material and the negative electrode active material are directly adopted to simulate the full battery structure, so that the test is more in line with the actual working environment of the positive electrode material and the negative electrode material, and the test accuracy is ensured;
Thirdly, the manufacturing is quick, in the manufacturing process, the anode active material and the cathode active material can be prepared in batches by adopting the existing mature pulping, coating and drying processes, the sodium ion battery structure to be tested can be manufactured only by subsequent stamping forming or cutting forming, and the consistency and the manufacturing efficiency are obviously improved.
Drawings
FIG. 1 is a schematic structural diagram of a sodium ion battery structure for facilitating rapid assessment of material properties in accordance with the present utility model;
The labels in the drawings include: 100. a base film; 200. a metal film layer; 300. A positive electrode material layer; 400. and a negative electrode material layer.
Detailed Description
In order to make the technical solution of the present utility model better understood by those skilled in the art, the following further details of the present utility model will be described with reference to examples and drawings.
As shown in fig. 1, the present utility model discloses a sodium ion battery structure for facilitating rapid evaluation of material properties, comprising a composite current collector, wherein the composite current collector comprises a microporous base film 100 and metal film layers 200 respectively disposed on both sides of the base film 100, one metal film layer 200 is coated with a positive electrode material layer 300, and the other metal film layer 200 is coated with a negative electrode material layer 400.
In the utility model, the metal film layer is a metal coating film plated on the surface of the base film or a metal foil pasted on the base film. Specifically, the metal coating is a copper film layer and/or an aluminum film layer, and the metal foil is copper foil or aluminum foil. In practical application, the compactness of the coating layer is not strictly required, so long as the anode material and the cathode material can be uniformly coated. For copper foil or aluminum film, a matted foil or a porous net foil is often used to promote the binding force, so that sodium ions can pass through conveniently.
In the utility model, the base film has no special requirement, and the stiffness of the base film is only required to be convenient for the positive electrode material and the negative electrode material after the composite coating film or the foil. The base film is a microporous polyolefin film, a non-woven fabric film, a nanofiber film or a cellulose diaphragm. Specifically, the microporous polyolefin film is a polypropylene film, a polyethylene film or a PET film. In practice, the base film is a single-layer film or a composite multi-layer film, which can meet the test requirements.
In the present utility model, the sodium ion battery structure is circular or square based on the processing and testing simulation requirements. After the positive electrode material layer and the negative electrode material layer are manufactured and attached to the composite current collector, the positive electrode material layer and the negative electrode material layer are rolled, and then are formed by stamping or cutting.
In the utility model, the method has wide applicability to the type of the positive and negative electrode materials tested. Specifically, the positive electrode material layer is a Prussian blue/white material layer, a layered oxide material layer, and/or a polyanion material layer. The negative electrode material layer is a hard carbon material layer, a soft carbon material layer or an alloy negative electrode material layer. In the testing process, the corresponding full battery system can be formed by flexible collocation, and accurate testing data can be formed for batch production.
In the description of the present utility model, it should be understood that the terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
The foregoing examples are merely exemplary embodiments of the present utility model, which are described in more detail and are not to be construed as limiting the scope of the utility model. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the spirit of the utility model, and that these obvious alternatives fall within the scope of the utility model.
Claims (10)
1. Sodium ion battery structure convenient to carry out quick aassessment to material performance, including compound current collector, its characterized in that: the composite current collector comprises a microporous base film and metal film layers respectively arranged on two sides of the base film, wherein one metal film layer is coated with a positive electrode material layer, and the other metal film layer is coated with a negative electrode material layer.
2. The sodium ion battery structure of claim 1, wherein the rapid assessment of material properties is facilitated by: the metal film layer is a metal coating film which is coated on the surface of the base film or a metal foil which is coated on the base film.
3. The sodium ion battery structure of claim 2, wherein the rapid assessment of material properties is facilitated by: the metal coating is a copper film layer and/or an aluminum film layer, and the metal foil is copper foil or aluminum foil.
4. A sodium ion battery structure for facilitating rapid assessment of material properties according to claim 3, wherein: the base film is a microporous polyolefin film, a non-woven fabric film, a nanofiber film or a cellulose diaphragm.
5. The sodium ion battery structure of claim 4, wherein the rapid assessment of material properties is facilitated by: the microporous polyolefin film is a polypropylene film, a polyethylene film or a PET film.
6. The sodium ion battery structure of claim 5, wherein the rapid assessment of material properties is facilitated by: the sodium ion battery structure is round or square.
7. The sodium ion battery structure of claim 6, wherein the rapid assessment of material properties is facilitated by: the positive electrode material layer is Prussian blue/white material layer, layered oxide material layer and/or polyanion material layer.
8. The sodium ion battery structure of claim 7, wherein the rapid assessment of material properties is facilitated by: the negative electrode material layer is a hard carbon material layer, a soft carbon material layer or an alloy negative electrode material layer.
9. The sodium ion battery structure of claim 8, wherein the rapid assessment of material properties is facilitated by: and the composite current collector, the positive electrode material layer and the negative electrode material layer are formed by pressing or cutting after rolling.
10. The sodium ion battery structure of claim 9, wherein the rapid assessment of material properties is facilitated by: the base film is a single-layer film or a composite multi-layer film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321929164.3U CN221057457U (en) | 2023-07-21 | 2023-07-21 | Sodium ion battery structure convenient to carry out quick aassessment to material performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321929164.3U CN221057457U (en) | 2023-07-21 | 2023-07-21 | Sodium ion battery structure convenient to carry out quick aassessment to material performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221057457U true CN221057457U (en) | 2024-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321929164.3U Active CN221057457U (en) | 2023-07-21 | 2023-07-21 | Sodium ion battery structure convenient to carry out quick aassessment to material performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221057457U (en) |
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2023
- 2023-07-21 CN CN202321929164.3U patent/CN221057457U/en active Active
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