Lithium ion battery composite separator, preparation method thereof, and lithium ion battery
A technology of lithium-ion batteries and composite diaphragms, which is applied in the manufacture of electrolyte batteries, battery pack parts, non-aqueous electrolyte batteries, etc., can solve the problems of poor wettability with electrolytes, improve liquid retention performance, prevent internal short circuits, and improve The effect of cycle performance
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0039] Example 1
[0040] The lithium ion battery composite separator of this embodiment includes a base film, the base film is a polyethylene microporous film, one side of the polyethylene microporous film is coated with a hot melt polymer coating, and the other side is coated with Heat-resistant coating, the melting temperature of the hot-melt polymer coating is lower than the heat-melting temperature of the base film, and the melting temperature of the heat-resistant coating is higher than the heat-melting temperature of the base film; The molecular coating includes 90 parts of hot-melt polymer material styrene-diethylene copolymer (PS-based copolymer), 10 parts of binder PVA, the particle size of styrene-diethylene copolymer is 0.7μm; heat-resistant coating Including 95 parts of heat-resistant polymer material polyimide, 5 parts of binder PVDF, the particle size of polyimide is 1.1μm; the thickness of the above-mentioned composite membrane is 28μm, and the thickness of polyet...
Example Embodiment
[0057] Example 2
[0058] The lithium ion battery composite separator of this embodiment includes a base film, the base film is a polypropylene microporous film, one side of the polypropylene microporous film is coated with a hot melt polymer coating, and the other side is coated with Heat-resistant coating, the melting temperature of the hot-melt polymer coating is lower than the heat-melting temperature of the base film, and the melting temperature of the heat-resistant coating is higher than the heat-melting temperature of the base film; The molecular coating includes 93 parts of hot-melt polymer material acrylonitrile-acrylate copolymer, 7 parts of adhesive LA132 (polyacrylic acid copolymer), the particle size of acrylonitrile-acrylate copolymer is 1.2μm; The coating includes 85 parts of heat-resistant polymer material polyimide, 5 parts of binder PVDF, and inorganic filler Al 2 O 3 10 parts, the particle size of polyimide is 2.0μm, inorganic filler Al 2 O 3 The particle size...
Example Embodiment
[0067] Example 3
[0068] The lithium ion battery composite separator of this embodiment includes a base film, the base film is a polypropylene microporous film, one side of the polypropylene microporous film is coated with a hot melt polymer coating, and the other side is coated with Heat-resistant coating, the melting temperature of the hot-melt polymer coating is lower than the heat-melting temperature of the base film, and the melting temperature of the heat-resistant coating is higher than the heat-melting temperature of the base film; The molecular coating includes 90 parts of hot-melt polymer material ethylene-vinyl acetate copolymer (EVA, with 9% VA content), 10 parts of adhesive LA132 (polyacrylic acid copolymer), and ethylene-vinyl acetate copolymer The particle size is 0.7μm; the heat-resistant coating includes 90 parts of heat-resistant polymer material polytetrafluoroethylene, 7 parts of binder PVDF, and inorganic filler SiO 2 3 parts, the particle size of PTFE is 1μ...
PUM
Property | Measurement | Unit |
---|---|---|
Melting temperature | aaaaa | aaaaa |
Melting temperature | aaaaa | aaaaa |
Thickness | 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