Supercharge Your Innovation With Domain-Expert AI Agents!

Particle composite film coated polymer electrolyte and preparation method thereof

A technology of polymers and electrolytes, which is applied in the field of particle composite film-coated polymer electrolytes and preparation, which can solve the problems of poor electrode interface compatibility and high cost, and achieve improved compatibility, reduced costs, mechanical strength and electrochemical window Improved effect

Inactive Publication Date: 2020-02-28
CHENDU NEW KELI CHEM SCI CO LTD
View PDF2 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of the defects of blending nanoparticles in the existing polymer electrolyte, poor electrode interface compatibility, and high cost, the present invention proposes a particle composite film-coated polymer electrolyte and a preparation method

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1. Preparation of nanoparticle composite glue: mix 70g of polyvinylidene fluoride-tetrafluoropropylene, 30g of nano-TiO 2 Add 200 g of N-methylpyrrolidone into an organic solvent, and then ultrasonically treat at a frequency of 25 kHz for 2 hours to obtain a nanoparticle composite glue.

[0035] 2. Preparation of polymer electrolyte base membrane: Add 85g of polytrimethylene carbonate and 30g of lithium tetrafluoroborate into a single-screw extruder, extrude at 100°C, form a sheet through a die, and further stretch to form a thickness of 80μm polymer electrolyte base membrane;

[0036] 3. Spray compounding: fix the polymer electrolyte base film on the stage, spray the nanoparticle composite glue through an electrostatic spray gun, the nozzle of the spray gun rotates at a constant speed and the distance from the substrate is 120mm, the voltage of the electrostatic spray gun is maintained at 60KV, and the spraying time is controlled at 15s ; On the surface of the polymer...

Embodiment 2

[0042] 1. Preparation of polymer electrolyte base membrane: Add 70g of polyvinyl carbonate and 15g of lithium trifluoromethanesulfonate into a single-screw extruder, extrude at 100°C, form a sheet through a die, and further stretch to form a thickness of 80μm polymer electrolyte base membrane;

[0043] 2. Preparation of nanoparticle composite glue: 80g polyvinylidene fluoride-tetrafluoropropylene, 30g nanometer Al 2 o 3 Add 300 g of N-methylpyrrolidone into an organic solvent, and then ultrasonically treat at a frequency of 20 kHz for 3 hours to obtain a nanoparticle composite glue.

[0044] 3. Spray coating: fix the polymer electrolyte base film on the stage, spray the nanoparticle composite glue through an electrostatic spray gun, the nozzle of the spray gun rotates at a constant speed and the distance from the substrate is 100mm, the voltage of the electrostatic spray gun is maintained at 50KV, and the spraying time is controlled at 18s ; On the surface of the polymer ele...

Embodiment 3

[0047] 1. Preparation of nanoparticle composite glue: 70g of polyvinylidene fluoride-tetrafluoropropylene, 20g of nanometer Li 2 TiO 3 Add 100 g of N-methylpyrrolidone into an organic solvent, and then ultrasonically treat at a frequency of 30 kHz for 1 hour to obtain a nanoparticle composite glue.

[0048] 2. Preparation of polymer electrolyte base membrane: Add 80g of polypropylene carbonate and 20g of bisoxalate lithium borate into a single-screw extruder, extrude at 100°C, form a sheet through a die, and further stretch to form a thickness of 80μm polymer electrolyte base membrane;

[0049] 3. Spray coating: fix the polymer electrolyte base film on the stage, spray the nanoparticle composite glue through an electrostatic spray gun, the nozzle of the spray gun rotates at a constant speed and the distance from the substrate is 140mm, the voltage of the electrostatic spray gun is maintained at 70KV, and the spraying time is controlled at 12s ; On the surface of the polymer ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to particle composite film coated polymer electrolyte and a preparation method thereof, belongs to the technical field of lithium ion battery electrolyte and aims to provide thepreparation method of the particle composite film coated polymer electrolyte. The method is characterized in that nanoparticle composite adhesive is prepared sequentially through polyvinylidene fluoride-tetrafluoropropene and inorganic nanoparticles through ultrasonic treatment, a polycarbonate electrolyte matrix is coated with the nanoparticle composite adhesive through equidistant electrostaticspraying, so the particle composite film coated polymer electrolyte material is prepared. The method is advantaged in that through the nano particle composite film coated polycarbonate electrolyte material, compatibility of the electrolyte and an electrode interface is improved, mechanical strength and an electrochemical window are improved, internal resistance of a lithium battery is favorably reduced, and the rate capability is favorably improved; the nanoparticle composite film is relatively thin, the use amount of inorganic nanoparticles is relatively small, so cost is further reduced, andindustrial production is facilitated.

Description

technical field [0001] The invention relates to a particle composite membrane-coated polymer electrolyte and a preparation method thereof, and belongs to the technical field of lithium-ion battery electrolytes. Background technique [0002] With the advancement of science and technology, people have entered the digital information age, portable smart digital products are developing rapidly, and various smart devices emerge in an endless stream, such as smart phones, notebook computers, audio equipment, game consoles, etc. On the other hand, oil resources are depleting day by day, vehicle exhaust has an increasingly significant impact on the ecological environment, people's awareness of environmental protection is constantly increasing, and electric vehicles are becoming more and more popular. The lithium-ion battery has the advantages of high voltage, high specific energy, long charge and discharge life, no memory effect, no pollution, fast charging, and low self-discharge r...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0565H01M10/0525
CPCH01M10/0525H01M10/0565H01M2300/0025H01M2300/0094Y02E60/10
Inventor 陈庆李国松
Owner CHENDU NEW KELI CHEM SCI CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com