Water-based ceramic coating lithium ion battery diaphragm and processing method thereof
A lithium-ion battery and ceramic coating technology, which is applied to battery pack parts, circuits, electrical components, etc., can solve the problems of unfavorable large-scale continuous production and difficulty in controlling the uniformity of coating thickness, and achieve continuous and stable large-scale Large-scale production, easy consistency control, and excellent affinity
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0030] A water-based ceramic coating lithium-ion battery separator, comprising a polypropylene porous membrane and a water-based ceramic coating coated on one side of the polypropylene porous membrane, wherein the polypropylene porous membrane has a thickness of 16um, a porosity of 42%, and a coating thickness of It is 4um, and the coating slurry used for the coating consists of 20% base material and 80% water calculated by weight percentage; the base material includes 0.1% water-soluble polymer thickener hydroxyethyl cellulose, Water-based dispersant polyethylene glycol 0.1%, water-based adhesive styrene-butadiene latex 0.1%, D 50 0.2um, BET is 15m 2 / g platy boehmite particles 99.7%.
[0031] The method for preparing the polymer inorganic lithium-ion battery diaphragm; comprising the following preparation steps:
[0032] 1. Add the amount of water-soluble polymer thickener hydroxyethyl cellulose, water-based dispersant polyethylene glycol and deionized water into the pre-m...
Embodiment 2
[0037] A water-based ceramic coating lithium-ion battery separator, comprising a polyethylene porous membrane and a water-based ceramic coating coated on both sides of the polyethylene porous membrane, wherein the polyethylene porous membrane has a thickness of 5um and a porosity of 35%. The thickness of the layers is 2um, and the coating slurry used in the coating consists of 30% base material and 70% water calculated by weight percentage; the base material includes water-soluble polymer thickener carboxymethyl cellulose calculated by weight percentage Sodium 5%, water-based dispersant polyacrylic acid 5%, water-based adhesive polymethyl methacrylate 10%, D 50 4um, BET is 2m 2 / g platy boehmite particles 80%.
[0038] The method for preparing the water-based ceramic coating lithium-ion battery diaphragm is the same as that of Example 1, except that the dispersion speed is 9000 rpm, and the coating method is dip coating.
Embodiment 3
[0040] A water-based ceramic coating lithium-ion battery separator, comprising polypropylene / polyethylene / polypropylene composite porous film and a water-based ceramic coating coated on one side of the polypropylene / polyethylene / polypropylene composite porous film, wherein polypropylene / polypropylene The thickness of the polyethylene / polypropylene composite porous film is 20um, the porosity is 39%, and the coating thickness is 5um, and the coating film slurry used for the coating consists of base material 40% and water 60% calculated by weight percentage; the base material Including 0.2% water-soluble polymer thickener polyacrylamide, 0.2% water-based dispersant sodium polyacrylate, 2% water-based adhesive polyethylacrylate, D 50 0.6um, BET is 12m 2 / g platy boehmite particles 97.6%.
[0041]The method for preparing the water-based ceramic coating lithium-ion battery diaphragm is the same as that of Example 1, except that the dispersion speed is 5000 rpm, and the coating meth...
PUM
Property | Measurement | Unit |
---|---|---|
Thickness | aaaaa | aaaaa |
Film thickness | aaaaa | aaaaa |
Particle size | 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, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com