Lithium ion battery carbon microsphere negative electrode material and preparation method thereof
A lithium-ion battery and negative electrode material technology, which is applied in battery electrodes, secondary batteries, circuits, etc., can solve the problems of spherical carbon materials such as poor sphericity, difficulty in achieving sufficient fineness, and cumbersome preparation process, etc., to achieve increased strength, Improved rate performance and simple preparation process
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0058] Example 1
[0059] A preparation method of carbon microsphere negative electrode material for lithium ion battery:
[0060] (1) Mix 5 grams of carbon black, 5 grams of wheat starch and 200 grams of water, and stir at 50°C for 4 hours to obtain a slurry;
[0061] (2) Drying and molding the slurry obtained in step (1) through a process of spraying into spheres, the inlet temperature of the spray drying is 230°C, and the outlet temperature is 70-150°C; initial carbon microspheres can be obtained after drying ;
[0062] (3) The initial carbon microspheres obtained in step (2) are treated at a high temperature of 900° C. for 2 h under an argon atmosphere to obtain a carbon microsphere negative electrode material.
[0063] The carbon microsphere material prepared in Example 1 was used to observe the surface morphology of the carbon microsphere by using a JSM6700 field emission scanning electron microscope (Japan Electronics Corporation). figure 1 For the SEM image of the c...
Example Embodiment
[0067] Example 2
[0068] A preparation method of carbon microsphere negative electrode material for lithium ion battery:
[0069] (1) Mix 5 grams of carbon black, 2.5 grams of glucose and 100 grams of water, and stir at 30°C for 2 hours to obtain a slurry;
[0070] (2) Dry and shape the slurry obtained in step (1) through a process of spray drying into spheres. The inlet temperature of the spray drying is 250°C, and the outlet temperature is 70-150°C; initial carbon microspheres can be obtained after drying. ;
[0071] (3) The initial carbon microspheres obtained in step (2) are treated at a high temperature of 1300° C. for 5 hours under a nitrogen atmosphere to obtain a carbon microsphere negative electrode material.
[0072] Figure 4 For the SEM image of the carbon microsphere negative electrode material obtained in Example 2, by Figure 4 It can be seen that the sphericity of the carbon microsphere particles is good. The particle size of carbon microspheres was analy...
Example Embodiment
[0073] Example 3
[0074] A preparation method of carbon microsphere negative electrode material for lithium ion battery:
[0075] (1) Mix 5 grams of carbon black, 3 grams of cellulose and 80 grams of water, and stir at 40°C for 3 hours to obtain a slurry;
[0076] (2) Drying and molding the slurry obtained in step (1) through a process of spray drying into spheres, the inlet temperature of the spray drying is 300°C, and the outlet temperature is 70-150°C; initial carbon microspheres can be obtained after drying ;
[0077] (3) The initial carbon microspheres obtained in step (2) are treated at a high temperature of 900° C. for 5 hours in a nitrogen atmosphere to obtain a carbon microsphere negative electrode material.
[0078] Figure 5 For the SEM image of the carbon microsphere negative electrode material obtained in Example 3, the carbon microsphere particles have good sphericity, and through particle size analysis, the carbon microsphere particle size is between 1 and 4...
PUM
Property | Measurement | Unit |
---|---|---|
Particle size | aaaaa | aaaaa |
Size | aaaaa | aaaaa |
Particle 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.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap