Self-assembly polyimide porous material, preparation method thereof and application thereof in lithium sulfur battery
A technology of polyimide and porous materials, which is applied in the fields of polyimide particles, porous carbon precursors, and positive electrode carbon materials. It can solve the problems of positive electrode structure collapse, capacity drop, and poor conductors, and achieve mild reaction conditions Reduce contact resistance and facilitate charging and discharging
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0029] Example 1
[0030] At room temperature, add 0.200g of 4,4-diaminodiphenyl ether (ODA) and the same mass of PVB to 6.5ml DMF solution, stir vigorously to make it evenly dispersed, add 0.266g1,4,5,8- in batches Naphthalene tetracarboxylic anhydride was stirred at room temperature for 10 hours.
[0031] The above solution was transferred to a polytetrafluoroethylene liner, and the reaction kettle was placed in an oven, reacted at 180° C. for 10 hours, cooled to room temperature, filtered, washed, and dried to obtain porous polyamic acid particles.
[0032] Place the obtained polyimide acid particles in a tube furnace, 2 Under the atmosphere, the temperature was raised to 400°C at 3°C / min and maintained for 1 hour to obtain polyimide particles; the temperature was continued to be increased to 900°C at 3°C / min and maintained for 1 hour to obtain porous carbon balls.
[0033] Dissolve 0.19g elemental sulfur in 40ml toluene, weigh out 0.08g of the above carbon material, mix the sulfur...
Example Embodiment
[0039] Example 2
[0040] At room temperature, add 0.4234g 4,4-diaminodiphenyl ether (ODA) and PVB of the same mass to 13.2ml DMF solution, stir vigorously to make the dispersion uniform, add 0.6460g 1,4,5,8-naphthalene tetrakis in batches Formic anhydride, stir at room temperature for 9 hours.
[0041] The above solution was transferred to a polytetrafluoroethylene liner, and the reaction kettle was placed in an oven, reacted at 180° C. for 10 hours, cooled to room temperature, filtered, washed, and dried to obtain porous polyamic acid particles.
[0042] Place the obtained polyimide acid particles in a tube furnace, and heat up to 350°C at 3°C / min under N2 atmosphere and maintain for 1 hour to obtain polyimide particles; continue to heat up to 800°C at 3°C / min , Maintain 1h, get porous carbon ball.
[0043] Dissolve 0.3g of elemental sulfur in 60ml of toluene, weigh 0.3g of the above carbon material, mix the sulfur toluene solution with the carbon material, stir at room temperature...
Example Embodiment
[0049] Example 3
[0050] At room temperature, add 0.445g 4,4-diaminodiphenyl ether (ODA) and PVB of the same mass to 13ml 1-methyl-2-pyrrolidone (NMP) solution, stir vigorously to make the dispersion uniform, add 0.530g1 in batches ,4,5,8-Naphthalenetetracarboxylic anhydride was added to the above solution, stirred vigorously to make the dispersion uniform, and stirred at room temperature for 10 hours.
[0051] The above solution was transferred to a polytetrafluoroethylene liner, and the reaction kettle was placed in an oven, reacted at 180° C. for 10 hours, cooled to room temperature, filtered, washed, and dried to obtain porous polyamic acid particles.
[0052] Place the obtained polyimide acid particles in a tube furnace, and heat up to 350°C at 3°C / min under N2 atmosphere and maintain for 1h to obtain polyimide particles; continue to heat up to 900°C at 3°C / min , Maintain 3h, get porous carbon ball.
[0053] Dissolve 0.19g elemental sulfur in 40ml toluene, weigh out 0.08g of th...
PUM
Property | Measurement | Unit |
---|---|---|
Diameter | 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