Preparation method of graphene-containing lithium manganate positive pole piece
A positive electrode piece, graphene technology, applied in battery electrodes, electrical components, circuits, etc., can solve the problems of no memory effect, poor conductivity of positive electrode materials, etc., and achieve the effect of increasing capacity and improving effective utilization.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Example Embodiment
[0018] Example 1
[0019] ① Add 2.5 g of graphene to 250 ml of isopropanol, disperse ultrasonically for 30 minutes, and let it stand for 12 hours, then remove the sediment to obtain a graphene dispersion;
[0020] ②Weigh 10 g of acetylene black and 85 g of lithium manganate in a ball mill to fully mix the mixture to obtain a mixture. The ball mill speed is 450 r / min and the ball milling time is 4 hours;
[0021] ③Weigh 5 g of polyvinylidene fluoride and dissolve it in 50 g of N-methyl-2-pyrrolidone solvent and stir to make it fully dissolved;
[0022] ④ Add the ball-milled mixture to the graphene dispersion and dry it at 100°C for 12 hours to obtain the mixture, and then add the mixture to the N-methyl-2-pyrrolidone solvent dissolved in vinylidene fluoride Then transfer to a high-speed mixer to prepare positive electrode slurry;
[0023] ⑤ Coating the obtained positive electrode slurry on aluminum foil and drying at a temperature of 100° C. to obtain a positive electrode pole piece.
Example Embodiment
[0024] Example 2
[0025] ① Add 2.5 g of graphene to 300 ml of isopropanol, disperse ultrasonically for 60 min, and leave it to stand for 24 hours, then remove the sediment to obtain a graphene dispersion;
[0026] ②Weigh 15 g of acetylene black and 80 g of lithium manganate in a ball mill and mix thoroughly to prepare the mixture. The ball mill speed is 450 r / min and the ball milling time is 4 hours;
[0027] ③Weigh 5 g polyvinylidene fluoride and dissolve it in 55 g N-methyl-2-pyrrolidone solvent and stir to fully dissolve it;
[0028] ④ Add the ball-milled mixture to the graphene dispersion and dry it at 100°C for 12 hours to obtain the mixture, and then add the mixture to the N-methyl-2-pyrrolidone solvent dissolved in vinylidene fluoride Then transfer to a high-speed mixer to prepare positive electrode slurry;
[0029] ⑤ Coating the obtained positive electrode slurry on aluminum foil and drying at a temperature of 100° C. to obtain a positive electrode pole piece.
Example Embodiment
[0030] Example 3
[0031] ① Add 1.3 g of graphene to 150 ml of isopropanol, ultrasonically disperse for 40 minutes, and let it stand for 15 hours, then remove the deposits to obtain a graphene dispersion;
[0032] ②Weigh 10g of acetylene black and 85g of lithium manganate in a ball mill to fully mix the mixture to obtain a mixture. The ball mill speed is 450 r / min and the ball milling time is 4 hours;
[0033] ③Weigh 5 g of polyvinylidene fluoride and dissolve it in 50 g of N-methyl-2-pyrrolidone solvent and stir to make it fully dissolved;
[0034] ④ Add the ball-milled mixture to the graphene dispersion and dry it at 100°C for 12 hours to obtain the mixture, and then add the mixture to the N-methyl-2-pyrrolidone solvent dissolved in vinylidene fluoride Then transfer to a high-speed mixer to prepare positive electrode slurry;
[0035] ⑤ Coating the obtained positive electrode slurry on aluminum foil and drying at a temperature of 100° C. to obtain a positive electrode pole piece.
[...
PUM
Property | Measurement | Unit |
---|---|---|
Size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2023 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap