CN119735978A - Anticorrosive coating and preparation method thereof, anticorrosive coating and application thereof, and anticorrosive aluminum foil - Google Patents
Anticorrosive coating and preparation method thereof, anticorrosive coating and application thereof, and anticorrosive aluminum foil Download PDFInfo
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- CN119735978A CN119735978A CN202411929812.4A CN202411929812A CN119735978A CN 119735978 A CN119735978 A CN 119735978A CN 202411929812 A CN202411929812 A CN 202411929812A CN 119735978 A CN119735978 A CN 119735978A
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
本发明涉及电池技术领域，提供了一种防腐涂料及其制备方法、防腐涂层和应用以及防腐铝箔。本发明提供的防腐涂料的成分包括溶剂、粘结剂和防腐剂，其中防腐剂为氟化物或含铝化合物，含铝化合物包括氢氧化铝和铝盐中一种或多种。氟化物和含铝化合物具有优异的化学稳定性，能够在铝箔表面形成稳定的保护层，减少铝箔与电解液之间的副反应，延长铝箔的使用寿命，还能降低气体产生和热失控的风险，有助于提升电池的安全性和稳定性；并且，本发明的防腐涂料中还包括粘结剂，能够使涂层与铝箔间实现强粘附，确保涂层在电池制备和工作过程中不容易剥落或脱落，从而保证长期的保护效果；同时，本发明提供的防腐涂料成本较低，适合大规模生产。
The present invention relates to the field of battery technology, and provides an anti-corrosion coating and a preparation method thereof, an anti-corrosion coating and application, and an anti-corrosion aluminum foil. The components of the anti-corrosion coating provided by the present invention include a solvent, a binder, and a preservative, wherein the preservative is a fluoride or an aluminum-containing compound, and the aluminum-containing compound includes one or more of aluminum hydroxide and aluminum salts. Fluorides and aluminum-containing compounds have excellent chemical stability, can form a stable protective layer on the surface of aluminum foil, reduce the side reaction between the aluminum foil and the electrolyte, extend the service life of the aluminum foil, and reduce the risk of gas generation and thermal runaway, which helps to improve the safety and stability of the battery; and the anti-corrosion coating of the present invention also includes a binder, which can achieve strong adhesion between the coating and the aluminum foil, ensuring that the coating is not easy to peel off or fall off during the preparation and operation of the battery, thereby ensuring a long-term protective effect; at the same time, the anti-corrosion coating provided by the present invention has a low cost and is suitable for large-scale production.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to an anti-corrosion coating, a preparation method thereof, an anti-corrosion coating and application thereof, and an anti-corrosion aluminum foil.
Background
In lithium ion batteries, aluminum foil is widely used as a current collector. However, aluminum foil is susceptible to corrosion under the long-term action of the electrolyte, resulting in degradation and even failure of the battery. Lithium bis (fluoromethanesulfonamide) (LiFSI) and lithium bis (trifluoromethanesulfonyl imide) (LiTFSI) have excellent high temperature stability and chemical stability, but LiFSI and LiTFSI cannot passivate aluminum foil, so that serious corrosion behavior is easy to cause, and the application of the lithium bis (fluoromethanesulfonamide) and LiTFSI in lithium battery electrolyte is limited.
The traditional aluminum foil corrosion prevention method comprises a chemical plating method and an anodic oxidation treatment method, wherein the chemical plating method is to form a layer of protective film on the surface of the aluminum foil through chemical reaction, the anodic oxidation treatment method is to place the aluminum foil serving as an anode in electrolyte, and a layer of compact aluminum oxide film is formed on the surface of the aluminum foil through voltage application, so that the corrosion resistance of the aluminum foil is improved. However, both of these methods have problems of complicated processes, high costs, or adverse effects on the battery performance.
The related art discloses an anti-corrosion coating aluminum foil for a lithium battery, wherein specific information and coating sequence of a coating are disclosed, the front side and the back side of the aluminum foil are coated with MXene layers, the surfaces of the MXene layers are coated with graphene thin layers, the surfaces of the graphene thin layers are coated with an anti-corrosion layer, the surfaces of the anti-corrosion layers are coated with carbon black coatings, the surfaces of the carbon black coatings are coated with flame retardant layers, and the anti-corrosion layers are coated with dopamine paint. Although the method can effectively protect the aluminum foil from corrosion, the process is too complex, and the cost is too high in practical application.
In view of the above, developing an efficient and cost-controllable aluminum foil corrosion-resistant coating is a major problem to be solved.
Disclosure of Invention
In view of the above, the invention provides an anti-corrosion coating, a preparation method thereof, an anti-corrosion coating and application thereof, and an anti-corrosion aluminum foil. The anticorrosive paint provided by the invention has simple components and low cost, and the prepared anticorrosive coating can effectively protect the aluminum foil from being corroded.
In order to achieve the above object, the present invention provides the following technical solutions:
The anticorrosive paint comprises 5-10wt% of a solvent, 4-9.5% of a binder and 1% of a preservative;
the preservative is fluoride or an aluminum-containing compound, and the aluminum-containing compound comprises one or more of aluminum hydroxide and aluminum salt.
Preferably, the fluoride comprises one or more of alkaline earth metal fluorides, alkali metal fluorides, aluminum fluoride, yttrium fluoride, zirconium fluoride, and manganese fluoride;
the aluminum salt includes one or more of fluoroaluminate, aluminum phosphate, and aluminum sulfate.
Preferably, the alkaline earth metal fluoride comprises one or more of calcium fluoride, magnesium fluoride, barium fluoride and strontium fluoride;
the fluoroaluminates include alkali metal fluoroaluminates.
Preferably, the binder includes one or more of polyvinyl alcohol, polytetrafluoroethylene, polyvinylidene fluoride, styrene-butadiene rubber, fluorinated rubber, polyurethane, and sodium carboxymethyl cellulose.
Preferably, the solvent is water or a polar organic solvent, and the polar organic solvent comprises one or more of N-methylpyrrolidone, methyl formamide and dimethylacetamide.
The invention also provides a preparation method of the anticorrosive paint, which comprises the following steps:
Mixing a binder and a solvent to obtain a binder solution;
and mixing the binder solution with a preservative to obtain the anticorrosive paint.
The invention also provides an anti-corrosion coating, which comprises the anti-corrosion coating prepared by the scheme or the preparation method.
The invention also provides application of the anti-corrosion coating in aluminum foil corrosion prevention.
The invention also provides an anti-corrosion aluminum foil, which comprises an aluminum foil substrate and an anti-corrosion coating arranged on the surface of the aluminum foil substrate, wherein the anti-corrosion coating is the anti-corrosion coating according to the scheme.
The invention also provides application of the anti-corrosion aluminum foil in lithium batteries.
The invention provides an anticorrosive paint which comprises 5-10wt% of a solvent, 4-9.5% of a binder and 1% of an aluminum-containing compound, wherein the preservative is fluoride or an aluminum-containing compound, and the aluminum-containing compound comprises one or more of aluminum hydroxide and aluminum salt. The anti-corrosion coating provided by the invention has the advantages that fluoride and aluminum-containing compound are adopted as preservative, the fluoride and aluminum-containing compound have excellent chemical stability, a stable protective layer can be formed on the surface of the aluminum foil, the side reaction between the aluminum foil and electrolyte is reduced, the service life of the aluminum foil is prolonged, the risks of gas generation and thermal runaway are also reduced, the safety and stability of a battery are improved, the anti-corrosion coating also comprises a binder, strong adhesion between the coating and the aluminum foil can be realized, the coating is not easy to peel off or fall off in the preparation and working processes of the battery, and the long-term protective effect is ensured.
Drawings
FIG. 1 is a photograph of aluminum foil modified with an anti-corrosive coating and unmodified aluminum foil in example 1;
Fig. 2 is a photograph before and after 5000 times bending of the aluminum foil modified with the anti-corrosive coating in example 1;
FIG. 3 is a potentiostatic anodic polarization curve of two electrodes of the aluminum foil modified with the corrosion-resistant coating and the unmodified aluminum foil of example 1;
FIG. 4 is an optical micrograph of the aluminum foil modified with an anti-corrosion coating and the unmodified aluminum foil of example 1 before and after potentiostatic anodic polarization of both electrodes;
FIG. 5 is a scanning electron micrograph of the aluminum foil modified with an anti-corrosion coating and the unmodified aluminum foil of example 1 before and after potentiostatic anodic polarization;
FIG. 6 is a graph showing XPS characterization before and after potentiostatic anodic polarization of both the aluminum foil modified with the corrosion-resistant coating and the unmodified aluminum foil in example 1;
FIG. 7 is a three-electrode potentiostatic anodic polarization curve of the aluminum foil modified with the corrosion-resistant coating and the unmodified aluminum foil of example 2;
FIG. 8 is a three-electrode potentiostatic anodic-polarization EIS impedance spectra of the aluminum foil modified with the corrosion-resistant coating and the unmodified aluminum foil of example 2.
Detailed Description
The invention provides an anticorrosive paint which comprises 5-10wt% of a solvent, 4-9.5% of a binder and 1% of a preservative;
the preservative is fluoride or an aluminum-containing compound, and the aluminum-containing compound comprises one or more of aluminum hydroxide and aluminum salt.
The various materials/components employed in the present invention are commercially available unless otherwise specified.
The anticorrosive paint provided by the invention comprises a solvent. In the present invention, the solvent is preferably water or a polar organic solvent, which preferably includes one or more of N-methylpyrrolidone (NMP), methylformamide and dimethylacetamide, and in a specific embodiment of the present invention, the solvent is preferably selected according to the kind of the binder so as to be able to dissolve the binder.
The anticorrosive paint provided by the invention comprises a binder. In the invention, the binder preferably comprises one or more of polyvinyl alcohol, polytetrafluoroethylene, polyvinylidene fluoride (PVDF), styrene-butadiene rubber, fluorinated rubber, polyurethane and sodium carboxymethylcellulose (CMC), and the concentration of the binder in the anticorrosive paint is preferably 5-10wt%, and can be specifically 5-6wt%, 7wt%, 8wt%, 9wt% or 10wt%. The adhesive can improve the adhesion effect between the coating and the aluminum foil, and ensures that the coating is not easy to peel off or fall off in the battery preparation and working process, thereby ensuring the long-term protection effect.
The anticorrosive paint provided by the invention comprises a preservative. In the invention, the mass ratio of the preservative to the binder is preferably (4-9.5): 1, and can be specifically 4:1, 5:1, 8:1, 9:1 or 9.5:1, the fluoride preferably comprises one or more of alkaline earth metal fluoride, alkali metal fluoride, aluminum fluoride, yttrium fluoride, zirconium fluoride and manganese fluoride, the alkaline earth metal fluoride preferably comprises one or more of calcium fluoride, magnesium fluoride, barium fluoride and strontium fluoride, the alkali metal fluoride preferably comprises lithium fluoride, the aluminum salt preferably comprises one or more of fluoroaluminate, aluminum phosphate and aluminum sulfate, the fluoroaluminate preferably comprises one or more of alkali metal fluoroaluminate, and specifically preferably potassium fluoroaluminate, sodium fluoroaluminate and lithium fluoroaluminate, the mass ratio of the fluoride to the aluminum-containing compound is preferably 3-5:1, and can be specifically 3.5:1 or 4:1 when the preservative comprises the fluoride and the aluminum-containing compound at the same time, the preservative preferably comprises one or more of calcium fluoride, magnesium fluoride, barium fluoride and strontium fluoride, the preferred mass ratio of the aluminum fluoride is 3:1 or more preferably comprises 3:1, and the aluminum fluoride preferably comprises 3:1, and the preferred aluminum fluoride is more preferably 3:1.
The fluoride has good chemical stability, can form a stable protective layer on the surface of the aluminum foil, can effectively resist corrosion in the electrolyte of the lithium battery, reduces side reactions between the aluminum foil and the electrolyte, prevents the aluminum foil from being corroded by the fluoride or other components in the electrolyte in the working process of the battery, and further prolongs the service life of the aluminum foil. The aluminum-containing compound (one or more of aluminum hydroxide and aluminum salt) also has excellent chemical stability, can form a protective coating on the surface of the aluminum foil, effectively isolates corrosive components in the electrolyte from contacting with the aluminum foil body, reduces the risk of corrosion of the aluminum foil, can improve the stability of the aluminum foil under high voltage, prevents side reactions in a battery charge-discharge cycle, prolongs the service life of the battery and improves the overall electrochemical performance, the reaction between the aluminum foil and the electrolyte can generate byproducts when the battery is operated, and can reduce the occurrence of the side reactions, thereby maintaining the stability of the battery performance, and meanwhile, the aluminum-containing compound coating can improve the interface properties of the aluminum foil and a positive electrode material, such as the enhancement of adhesion and stability, and is beneficial to improving the overall performance and service life of the battery.
The invention also provides a preparation method of the anticorrosive paint, which comprises the following steps:
Mixing a binder and a solvent to obtain a binder solution;
and mixing the binder solution with a preservative to obtain the anticorrosive paint.
The method for mixing the binder and the solvent is not particularly required, and the binder and the solvent can be uniformly mixed, and in the specific embodiment of the invention, the binder and the solvent are preferably placed in a glass bottle and then fully stirred.
In the specific embodiment of the invention, the preservative is preferably placed in a glass bottle, then the binder solution is added, and the preservative is stirred until the preservative is uniformly dispersed in the binder solution.
The invention also provides an anti-corrosion coating, which comprises the anti-corrosion coating prepared by the scheme or the preparation method, namely the anti-corrosion coating is prepared from the anti-corrosion coating. In the present invention, the thickness of the coating layer is preferably 5 to 50 μm, and may be 10 μm, 20 μm, 30 μm or 40 μm.
The preparation method of the anti-corrosion coating preferably comprises the steps of drying after coating the anti-corrosion coating to obtain the anti-corrosion coating, wherein in the invention, the coating mode is preferably blade coating, the thickness of the coating is preferably 5-50 microns, and can be 10 microns, 20 microns, 30 microns or 40 microns, the drying is preferably vacuum drying, the drying temperature is preferably 60 ℃, and the drying time is preferably 12-24 hours.
The invention also provides application of the anti-corrosion coating in aluminum foil corrosion prevention, in a specific embodiment of the invention, the anti-corrosion coating is preferably coated on the surface of the aluminum foil, and then the aluminum foil is dried, namely the anti-corrosion coating is obtained on the surface of the aluminum foil, and the aluminum foil is particularly an aluminum foil for a lithium battery.
The invention also provides an anti-corrosion aluminum foil, which comprises an aluminum foil substrate and an anti-corrosion coating arranged on the surface of the aluminum foil substrate, wherein the anti-corrosion coating is the anti-corrosion coating according to the scheme.
The invention also provides application of the anti-corrosion aluminum foil in a lithium battery, the application is not particularly required, and the anti-corrosion aluminum foil is used as a current collector of the lithium battery by a method well known to a person skilled in the art.
The following description of the embodiments of the present invention will clearly and fully describe the technical solutions of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
(1) 1G of PVDF was weighed into a glass bottle, 19gNMP was added, and stirred for 4 hours until PVDF was dissolved and dispersed uniformly, thereby preparing a PDVF solution.
(2) Weighing 0.5g of calcium fluoride and 0.5g of barium fluoride in a glass bottle, adding 4g of PVDF solution prepared in the step (1), and stirring for 12 hours until the calcium fluoride and the barium fluoride are uniformly dispersed in the PVDF solution, thereby obtaining the anti-corrosion coating.
(3) And (3) scraping the anticorrosive paint prepared in the step (2) on the surface of the cleaned aluminum foil, wherein the scraping thickness is 30 mu m, and drying overnight in a vacuum oven at 60 ℃ to obtain the aluminum foil decorated with the anticorrosive paint, which is marked as F-Al.
Performance test:
The electrolyte is LiTFSI base electrolyte, wherein the solvent is DMC (dimethyl carbonate), EMC (ethylmethyl carbonate) and EC (ethylene carbonate), the electrolyte is LiTFSI, the mass ratio of DMC, EMC and EC is 1:1:1, and the concentration of LiTFSI is 1mol/L.
Cutting F-Al prepared in the step (3) into pole pieces with the diameter of 16mm, and comparing with unmodified aluminum foil. Fig. 1 is a photograph of an aluminum foil modified with an anti-corrosion coating and an unmodified aluminum foil, and according to fig. 1, it can be seen that a layer of substance, namely the anti-corrosion coating, can be clearly observed on the surface of the modified aluminum foil.
The aluminum foil decorated with the anti-corrosion coating was subjected to a bending 5000 test, the test results are shown in fig. 2. According to fig. 2, after 5000 bending tests, the surface of the aluminum foil modified with the anti-corrosion coating has no obvious change, and the anti-corrosion coating is excellent in adhesion and is not easy to fall off.
And assembling the prepared F-Al pole piece into a Li/F-Al half battery, and assembling the Li/Al half battery by adopting an Al pole piece with an unmodified anti-corrosion coating, and carrying out a constant potential anodic polarization experiment, wherein the polarization voltage is 4.2V, the polarization time is 18000s, and a test curve is shown in figure 3. As can be seen from fig. 3, the corrosion current of the aluminum foil assembled half cell (Li/F-Al half cell) coated with the corrosion-resistant coating rapidly decreased and reached equilibrium over time, indicating no corrosion occurred. The polarization current of the aluminum foil assembled half cell (Li/Al) without the modified anti-corrosion coating is unstable with time, which indicates that corrosion occurs.
The cell after the constant potential anodic polarization experiment is disassembled, and the surfaces of the Al pole piece and the F-Al pole piece before and after polarization are observed by adopting an optical microscope, wherein the optical microscope photograph is shown in figure 4. The surfaces of the Al pole piece and the F-Al pole piece before and after the polarization are characterized by adopting a Scanning Electron Microscope (SEM), and the SEM picture is shown in figure 5. The surfaces of the Al pole piece and the F-Al pole piece before and after polarization are characterized by adopting X-ray photoelectron spectroscopy (XPS), and the XPS is shown in figure 6. It can be seen from fig. 4 and 5 that the surface of the polarized F-Al sheet is uniformly covered by the corrosion-resistant coating, no corrosion occurs, and a large number of pits appear on the surface of the polarized Al sheet without the corrosion-resistant coating, and that the metal peak of Al exists after the polarization of the Al sheet without the corrosion-resistant coating, which indicates that corrosion occurs, and that the peak of Al 3+ exists before and after the polarization of the F-Al sheet with the corrosion-resistant coating, which indicates that no corrosion occurs.
Example 2
(1) 1G of CMC was weighed into a glass bottle, 19g H 2 O was added thereto, and stirred for 4 hours until CMC was dissolved and dispersed uniformly, thereby preparing a CMC aqueous solution.
(2) Weighing 0.8g of strontium fluoride and 0.2g of aluminum fluoride in a glass bottle, adding 4g of CMC solution prepared in the step (1), and stirring for 12 hours until the strontium fluoride and the aluminum fluoride are uniformly dispersed in the CMC solution, thereby obtaining the anti-corrosion coating.
(3) And (3) scraping the anticorrosive paint prepared in the step (2) on the surface of the cleaned aluminum foil, wherein the scraping thickness is 20 mu m, and drying overnight in a vacuum oven at 60 ℃ to prepare the aluminum foil decorated with the anticorrosive paint, which is marked as F-Al.
Performance test:
The electrolyte is LiTFSI base electrolyte, wherein the solvent is DMC (dimethyl carbonate), EMC (ethylmethyl carbonate) and EC (ethylene carbonate), the electrolyte is LiTFSI, the mass ratio of DMC, EMC and EC is 1:1:1, and the concentration of LiTFSI is 1mol/L.
Cutting F-Al and pure aluminum foil prepared in the step (3) into pole pieces with the length of 2 multiplied by 1cm, adopting a reference electrode as a lithium foil, adopting a counter electrode as a lithium foil, carrying out a three-electrode constant potential anodic polarization experiment on a working electrode as F-Al or Al, carrying out EIS impedance spectrum test on the working electrode before and after polarization, wherein the polarization curve is shown in figure 7, and the impedance spectrum is shown in figure 8.
As can be seen from fig. 7, the polarization current of the pure aluminum foil is extremely unstable, this change indicates that the natural oxide film on the surface of the aluminum foil is broken, the internal aluminum is exposed to the electrolyte and continuously loses electrons under the action of high potential to be oxidized, so that the oxidation current is changed rapidly, which indicates that corrosion occurs, while the oxidation current of the aluminum foil modified with the anti-corrosion coating is reduced with the increase of time, the stable fluctuation of the oxidation current is small, which indicates that no corrosion occurs.
As can be seen from fig. 8, the Rct of the polarized pure aluminum foil is significantly reduced, and the diffusion of the corrosion product from the surface of the Al foil to the electrolyte results in a reduction of the impedance of the passivation film, which indicates that the Al foil is corroded, whereas the aluminum foil modified with the corrosion-resistant coating not only significantly reduces Rct, but also reduces Rct slightly after polarization, which is probably caused by the further uniform dispersion of AlF 3 during polarization, so as to further improve interface contact.
Example 3
(1) 1G of PVDF was weighed into a glass bottle, 19gNMP was added thereto, and stirred for 4 hours until PVDF was dissolved and dispersed uniformly, thereby preparing a PVDF solution.
(2) Weighing 0.3g of aluminum hydroxide and 0.7g of aluminum fluoride in a glass bottle, adding 4g of PVDF solution prepared in the step (1), and stirring for 12 hours until the aluminum hydroxide and the aluminum fluoride are uniformly dispersed in the PVDF solution, so as to prepare the anti-corrosion coating slurry.
(3) And (3) spreading the sizing agent prepared in the step (2) on the surface of the cleaned aluminum foil, and drying the aluminum foil in a vacuum oven with the spreading thickness of 20 mu m and 60 ℃ overnight to prepare the aluminum foil decorated with the anti-corrosion coating, which is marked as F-Al.
Performance test:
The electrolyte is LiTFSI base electrolyte, wherein the solvent is DMC (dimethyl carbonate), EMC (ethylmethyl carbonate) and EC (ethylene carbonate), the electrolyte is LiTFSI, the mass ratio of DMC, EMC and EC is 1:1:1, and the concentration of LiTFSI is 1mol/L.
Cutting F-Al and pure aluminum foil prepared in the step (3) into pole pieces with the length of 2 multiplied by 1cm, adopting a reference electrode as a lithium foil, adopting a counter electrode as a lithium foil, carrying out three-electrode constant potential anodic polarization experiments on a working electrode as F-Al or Al, and carrying out EIS impedance spectrum tests before and after polarization, wherein the results show that the corrosion resistance effect is similar to that of the embodiment 2.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (10)
1. The anticorrosive paint is characterized by comprising 5-10wt% of a solvent, 4-9.5 of a binder and 1 of a preservative;
the preservative is fluoride or an aluminum-containing compound, and the aluminum-containing compound comprises one or more of aluminum hydroxide and aluminum salt.
2. The anticorrosive coating according to claim 1, wherein the fluoride comprises one or more of alkaline earth metal fluoride, alkali metal fluoride, aluminum fluoride, yttrium fluoride, zirconium fluoride, and manganese fluoride;
the aluminum salt includes one or more of fluoroaluminate, aluminum phosphate, and aluminum sulfate.
3. The anticorrosive coating according to claim 2, wherein the alkaline earth metal fluoride comprises one or more of calcium fluoride, magnesium fluoride, barium fluoride and strontium fluoride;
the fluoroaluminates include alkali metal fluoroaluminates.
4. The anticorrosive coating according to claim 1, wherein the binder comprises one or more of polyvinyl alcohol, polytetrafluoroethylene, polyvinylidene fluoride, styrene-butadiene rubber, fluorinated rubber, polyurethane, and sodium carboxymethyl cellulose.
5. The anticorrosive coating according to claim 1, wherein the solvent is water or a polar organic solvent, and the polar organic solvent comprises one or more of N-methylpyrrolidone, methylformamide and dimethylacetamide.
6. The method for preparing the anticorrosive paint according to any one of claims 1 to 5, comprising the following steps:
Mixing a binder and a solvent to obtain a binder solution;
and mixing the binder solution with a preservative to obtain the anticorrosive paint.
7. An anti-corrosion coating, which is characterized by comprising the anti-corrosion coating according to any one of claims 1-5 or the anti-corrosion coating prepared by the preparation method according to claim 6.
8. Use of the corrosion protection coating of claim 7 for the protection of aluminum foils.
9. An anti-corrosion aluminum foil, which is characterized by comprising an aluminum foil substrate and an anti-corrosion coating layer arranged on the surface of the aluminum foil substrate, wherein the anti-corrosion coating layer is the anti-corrosion coating layer in claim 7.
10. Use of the corrosion-resistant aluminum foil of claim 9 in lithium batteries.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411929812.4A CN119735978A (en) | 2024-12-26 | 2024-12-26 | Anticorrosive coating and preparation method thereof, anticorrosive coating and application thereof, and anticorrosive aluminum foil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411929812.4A CN119735978A (en) | 2024-12-26 | 2024-12-26 | Anticorrosive coating and preparation method thereof, anticorrosive coating and application thereof, and anticorrosive aluminum foil |
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| CN119735978A true CN119735978A (en) | 2025-04-01 |
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| CN202411929812.4A Pending CN119735978A (en) | 2024-12-26 | 2024-12-26 | Anticorrosive coating and preparation method thereof, anticorrosive coating and application thereof, and anticorrosive aluminum foil |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012033393A (en) * | 2010-07-30 | 2012-02-16 | Fujimori Kogyo Co Ltd | Laminate for battery exterior package |
| CN103237850A (en) * | 2010-10-15 | 2013-08-07 | 柏格阿莫菲克索录森斯有限公司 | Coating composition with anti-corrosion properties |
| CN103249870A (en) * | 2010-12-24 | 2013-08-14 | 日本帕卡濑精株式会社 | Etching agent for aluminium and aluminium alloys |
| CN108315728A (en) * | 2017-12-21 | 2018-07-24 | 湖南芯能新材料有限公司 | A kind of anti-corrosion of metal inorganic agent and its application process |
| CN109728249A (en) * | 2017-10-30 | 2019-05-07 | 中国科学院宁波材料技术与工程研究所 | An interface protection structure, a preparation method and a battery comprising the structure |
| CN118970023A (en) * | 2024-10-17 | 2024-11-15 | 浙江锂威能源科技有限公司 | A safety coating and its application, electrode sheet and lithium ion battery |
-
2024
- 2024-12-26 CN CN202411929812.4A patent/CN119735978A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012033393A (en) * | 2010-07-30 | 2012-02-16 | Fujimori Kogyo Co Ltd | Laminate for battery exterior package |
| CN103237850A (en) * | 2010-10-15 | 2013-08-07 | 柏格阿莫菲克索录森斯有限公司 | Coating composition with anti-corrosion properties |
| CN103249870A (en) * | 2010-12-24 | 2013-08-14 | 日本帕卡濑精株式会社 | Etching agent for aluminium and aluminium alloys |
| CN109728249A (en) * | 2017-10-30 | 2019-05-07 | 中国科学院宁波材料技术与工程研究所 | An interface protection structure, a preparation method and a battery comprising the structure |
| CN108315728A (en) * | 2017-12-21 | 2018-07-24 | 湖南芯能新材料有限公司 | A kind of anti-corrosion of metal inorganic agent and its application process |
| CN118970023A (en) * | 2024-10-17 | 2024-11-15 | 浙江锂威能源科技有限公司 | A safety coating and its application, electrode sheet and lithium ion battery |
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