Preparation method of asphalt-based carbon microsphere and application of asphalt-based carbon microsphere as sodium ion battery electrode material
A sodium-ion battery, carbon microsphere technology, applied in battery electrodes, carbon preparation/purification, negative electrodes, etc., can solve problems such as gaps
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0020] Example 1
[0021] The raw coal tar pitch is crushed, sieved, and 10 g is added to 200 ml of high temperature resistant silicone oil, and 1 g of sodium dodecylbenzene sulfonate is added at the same time. At a stirring rate of 100r / min, the system was heated to 240°C and kept for 2h. The process has been carried out in an air atmosphere. After the heat preservation is over, the pellets are separated from the silicone oil and washed clean. The product is put into a high-temperature carbonization furnace and heated to 1200°C in a nitrogen atmosphere to obtain the final product.
[0022] As attached figure 1 The microspherical appearance of the pitch-based carbon shown by the scanning electron microscope (SEM) remains intact.
[0023] The electrode material is at 0.05mA g -1 The discharge specific capacity under current density can reach 265mA h g -1 ; At 1A g -1 The specific discharge capacity can still be maintained at 142mA h g at a current density -1 .
Example Embodiment
[0024] Example 2
[0025] The raw material petroleum pitch is crushed, sieved, and 10g is added to 200ml high temperature resistant silicone oil, and 1g sodium dodecylbenzene sulfonate is added at the same time. At a stirring rate of 100r / min, the system was heated to 240°C and kept for 2h. The process has been carried out in an air atmosphere. After the heat preservation is over, the pellets are separated from the silicone oil and washed clean. The product is put into a high-temperature carbonization furnace and heated to 1200°C in a nitrogen atmosphere to obtain the final product.
[0026] The electrochemical performance test results show that the electrode material is at 0.05mA g -1 The discharge specific capacity under current density can reach 312mA h g -1 ; At 1A g -1 The discharge specific capacity can still be maintained at 184mA h g at a current density -1 .
Example Embodiment
[0027] Example 3
[0028] The raw coal tar pitch is crushed, sieved, and 10 g is added to 200 ml of high temperature resistant silicone oil, and 1 g of Span 80 is added at the same time. At a stirring rate of 100r / min, the system was heated to 240°C and kept for 2h. The process has been carried out in an air atmosphere. After the heat preservation is over, the pellets are separated from the silicone oil and washed clean. The product is put into a high-temperature carbonization furnace and heated to 1200°C in a nitrogen atmosphere to obtain the final product.
[0029] The electrochemical performance test results show that the electrode material is at 0.05mA g -1 The discharge specific capacity under current density can reach 271mA h g -1 ; At 1A g -1 The specific discharge capacity can still be maintained at 144mA h g at a current density -1 .
PUM
Property | Measurement | Unit |
---|---|---|
Discharge specific capacity | aaaaa | aaaaa |
Specific volume | aaaaa | aaaaa |
Discharge specific 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.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap