Manufacturing method of negative plate of safety lithium-ion battery
A manufacturing method, lithium ion technology, applied in electrode manufacturing, battery electrodes, secondary batteries, etc., to achieve high filling density, excellent charge and discharge performance, and good filling effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0052] Example 1:
[0053] A method for manufacturing the negative electrode sheet of a safe lithium ion battery, including the following steps and process conditions:
[0054] In the first step, the negative electrode active material graphite / activated carbon composite material: SP was mixed by ball milling at a mass ratio of 1:0.002 for 0.5 hours to obtain negative electrode active material mixture A; negative electrode additive graphene B; according to the mass ratio of A:B 1:0.005 ratio, ball mill for 4 hours to mix evenly to make negative active material mixture C;
[0055] In the second step, CMC, which accounts for 1% of the mass of the mixture C, is prepared with distilled water to prepare a 0.5% concentration by mass of an aqueous solution, which is kept constant at 30°C and stirred for 0.5 hours under vacuum, and SBR accounting for 2% of the C substance’s mass is added in 3 or 4 or 5 times. At the same time, add NMP solvent, which accounts for 1% of the mass of the water o...
Example Embodiment
[0060] Example 2:
[0061] A method for manufacturing the negative electrode sheet of a safe lithium ion battery, including the following steps and process conditions:
[0062] In the first step, the negative electrode active material graphite / activated carbon composite material: SP was mixed by ball milling at a mass ratio of 1:0.004 for 1 hour to obtain the negative electrode active material mixture A; the carbon nanotubes B according to the mass ratio of A:B were: The ratio of 1:0.004, ball milling for 1 hour to mix evenly to make negative active material mixture C;
[0063] In the second step, CMC which accounts for 2% of the mass of C is prepared with double-distilled water to form an aqueous solution with a concentration of 1% by mass percentage, which is kept constant at 35°C and stirred for 1 hour under vacuum. SBR accounts for 4% of the mass of C is added in 3 or 4 or 5 times. At the same time, add NMP which accounts for 2% of the water volume of the CMC solution, at a cons...
Example Embodiment
[0068] Example 3:
[0069] A method for manufacturing the negative electrode sheet of a safe lithium ion battery, including the following steps and process conditions:
[0070] In the first step, the graphite / activated carbon composite material: SP was mixed by ball milling at a mass ratio of 1:0.006 for 1.5 hours to obtain a negative electrode active material mixture A; a mixture of graphene and carbon nanotubes mixed in an equal mass ratio according to A:B The mass ratio of is: the ratio of 1:0.003, ball milled for 2 hours and mixed uniformly to make negative active material mixture C;
[0071] In the second step, CMC with 3% of C by mass is obtained in the first step, and purified water is used to prepare an aqueous solution with a concentration of 2.0% by mass, constant temperature at 40°C, and vacuum stirring for 2 hours. Add 3 or 4 or 5 times to account for 6 % SBR, and at the same time add NMP which accounts for 3% of the water volume of the CMC solution, at a constant temper...
PUM
Property | Measurement | Unit |
---|---|---|
Particle size | aaaaa | aaaaa |
Discharge capacity | aaaaa | aaaaa |
Discharge capacity | 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