Porous polymer-sulfur composite material, preparation method and application thereof
A porous polymer and polymer technology, applied in the direction of active material electrodes, structural parts, positive electrodes, etc., can solve the problems of increasing material and battery costs, increasing battery energy density, complex post-processing, etc., and achieve excellent cycle stability, Effect of suppressing shuttling and high Coulombic efficiency
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0090] Example 1
[0091] (1) Preparation of porous polymers
[0092] Monomer I is aldehyde monomer, R 1 With r 2 Are h, n = 1
[0093] Monomer II is amine monomer, R 3 H, R 4 -So-SO 3 H, n = 1
[0094] The monomer I and the monomer II were weighed in accordance with the molar ratio of 1: 1, dispersed in a mixed solvent of butanol, dichlorobenzene and acetic acid in a volume ratio of 2: 4: 1. 5 ° C min -1 The temperature was heated to 120 ° C, and the reaction was reacted for 72 hours to obtain a porous polymer ( figure 1 . Combined with infrared spectrum ( figure 2 ) It is not difficult to find that the monomer I is reacted with the monomer II to form an imine to obtain a porous polymer. The specific surface area of the obtained porous polymer is 500m 2 G -1 Hole volume is 0.9cm 3 G -1 The aperture is 1.4 nm.
[0095] (2) Preparation of porous polymer-sulfur composite
[0096] The above porous polymer and sulfur were weighed according to the mass ratio of 15: 1, and the ultra...
Example Embodiment
[0102] Example 2
[0103] Others are the same as in Example 1, and the difference is:
[0104] Monomer I in R 1 for Rim 2 H, n = 1
[0105] Monomer II in R 3 H, R 4 -So-SO 3 H, n = 1
[0106] The specific surface area of the obtained porous polymer is 620m 2 G -1 Hole volume is 0.85cm 3 G -1 The aperture is 1.2 nm; the mass percentage of sulfur in the porous polymer-sulfur composite is about 70%.
[0107] The resulting lithium-sulfur battery is also a test method in Example 1, 0.1c discharge ratio capacity is 1608mAh g -1 , 50 laps after discharge ratio capacity is 882mA h g -1 .
Example Embodiment
[0108] Example 3
[0109] Others are the same as in Example 1, and the difference is:
[0110] Monomer IR 1 for Rim 2 H, n = 1
[0111] Monomer II in R 3 H, R 4 -So-SO 3 H, n = 2
[0112] The specific surface area of the obtained porous polymer is 570m 2 G -1 , Hole volume of 0.96cm 3 G -1 The aperture is 1.3 nm; the mass percentage of sulfur in the porous polymer-sulfur composite is about 77%.
[0113] The resulting lithium-sulfur battery is also a test method in Example 1, 0.1c discharge ratio capacity is 1614mAh g -1 , 50 laps after the discharge ratio is 896mA h g -1 .
PUM
Property | Measurement | Unit |
---|---|---|
Specific surface area | aaaaa | aaaaa |
Pore volume | aaaaa | aaaaa |
Aperture | 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