Method for preparing polyvinylidene fluoride (PVDF) porous nanofiber membrane with high ion migration number
A technology of ion transfer number and nanofiber membrane, which is applied in fiber processing, fiber chemical characteristics, rayon manufacturing, etc., can solve the problems of increasing the tortuosity of the fiber membrane aperture, increasing the internal resistance of the battery, and overheating the battery to achieve good electrochemical performance. The effects of stability, prolonging service life, and reducing the rate of increase in internal resistance
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Example Embodiment
[0018] Example 1
[0019] At room temperature and 25℃, add 0.05g SWCNT and 0.05g lithium chloride to 47.4g NN-dimethylacetamide / acetone (mass ratio 1:1) mixed solvent, and under 40Hz ultrasonic frequency Treat for 1 h; then, take 4 g of polyvinylidene fluoride in 100 o Dry under vacuum for 24 h under C, then add 2 g of dried polyvinylidene fluoride to the mixture of SWCNT / lithium chloride / N-N-dimethylacetamide / acetone, and place it on a magnetic stirrer at 80 o Under C condition, stir and dissolve at 100 rpm until a homogeneous solution is obtained; finally, at room temperature 25 o Under C condition, add 0.5 g of polyvinylpyrrolidone to the above solution, put it on a magnetic stirrer and stir at a speed of 120 rpm, and finally obtain a polyvinylidene fluoride / polyvinylpyrrolidone electrospinning solution with a mass fraction of 5%.
[0020] At room temperature 25 o C. Under the condition of 20% humidity, input the polyvinylidene fluoride / polyvinylpyrrolidone spinning solution into...
Example Embodiment
[0022] Example 2
[0023] At room temperature 25 o Under the condition of C, add 0.1 g SWCNT and 0.05 g lithium perchlorate to 45.85 g of NN-dimethylacetamide / dimethyl sulfoxide (mass ratio 1:1) mixed solvent, and ultrasound at 40Hz Treatment frequency for 1 h; take 6 g of polyvinylidene fluoride at 100 o Vacuum dry at C for 24 hours, then take 3.5 g of dried polyvinylidene fluoride and add SWCNT / lithium perchlorate / NN-dimethylacetamide / dimethylsulfoxide to the mixture, and place it on a magnetic stirrer Up to 80 o Under C condition, stir and dissolve at 55 rpm until a homogeneous solution is obtained; finally, at room temperature 25 o Under C condition, 0.5 g of polyvinylpyrrolidone was added to the above solution, put on a magnetic stirrer and stirred at a speed of 120 rpm, and finally a polyvinylidene fluoride / polyvinylpyrrolidone electrospinning solution with a mass fraction of 13% was obtained.
[0024] At room temperature 25 o C. Under the condition of 30% humidity, input the...
Example Embodiment
[0026] Example 3
[0027] At room temperature 25 o Under C condition, add 0.05 g SWCNT and 0.05 g lithium phosphate to 43.9 g N-methylpyrrolidone / dimethyl sulfoxide (mass ratio 1:2) mixed solvent, and treat at 40 Hz ultrasonic frequency for 2 h ; Take 7 g of PVDF in 100 o Dry under vacuum for 24 h at C, then add 5 g of the dried polyvinylidene fluoride to the mixture of SWCNT / lithium phosphate / N-methylpyrrolidone / dimethyl sulfoxide, and place it on a magnetic stirrer at 80 o Stir and dissolve at 120 rpm under C condition until a homogeneous solution is obtained. Finally, at room temperature 25 o Under C condition, add 1 g of polyvinylpyrrolidone to the above solution, put it on a magnetic stirrer and stir at a speed of 120 rpm to obtain a polyvinylidene fluoride / polyvinylpyrrolidone electrospinning solution with a mass fraction of 12%.
[0028] At room temperature 25 o C. Under the condition of 28% humidity, input the polyvinylidene fluoride / polyvinylpyrrolidone spinning solution ...
PUM
Property | Measurement | Unit |
---|---|---|
Tensile modulus | aaaaa | aaaaa |
Tensile strength | aaaaa | aaaaa |
Tensile modulus | 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