Supercharge Your Innovation With Domain-Expert AI Agents!

Polymer electrolyte with gas-phase flame-retardant function and battery

A technology of polymers and electrolytes, which is applied in the direction of non-aqueous electrolyte batteries, electrolyte battery manufacturing, organic electrolytes, etc. It can solve the problems that it is difficult to exert the gas phase flame retardant function, and the flame retardant polymer electrolyte matrix cannot effectively produce flame retardant volatiles. , to achieve the effects of excellent oxidation stability, excellent electrochemical performance and high elasticity

Active Publication Date: 2022-04-19
广东马车动力科技有限公司
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the deficiencies in the prior art above, the purpose of the present invention is to provide a polymer electrolyte with a gas phase flame retardant function and a battery, aiming to solve the existing The flame-retardant polymer electrolyte matrix in the technology cannot effectively produce flame-retardant volatiles, and it is difficult to exert the gas-phase flame-retardant function

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Polymer electrolyte with gas-phase flame-retardant function and battery
  • Polymer electrolyte with gas-phase flame-retardant function and battery
  • Polymer electrolyte with gas-phase flame-retardant function and battery

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0054] The embodiment of the present invention also provides a preparation method of the battery, such as figure 1 shown, including steps:

[0055] S10. Prepare a positive electrode sheet: mix the first positive electrode active material, the conductive agent and the binder in proportion to form a positive electrode active material layer slurry; use a coating machine to coat the positive electrode active material layer slurry on the positive electrode collector On the fluid, the positive electrode sheet is obtained after drying and rolling;

[0056] S20. Prepare a negative electrode sheet: mix the first negative electrode active material, the conductive agent and the binder in proportion to form a negative electrode active material layer slurry; use a coater to coat the negative electrode active material layer slurry on the negative electrode collector On the fluid, the negative electrode sheet is obtained after drying and rolling;

[0057] S30, assembling the battery cell: ...

Embodiment 1-6

[0066] Preparation of batteries containing monomers of non-flammable or flame-retardant substances with gas-phase flame retardant function

[0067] Preparation of positive electrode sheet: Lithium cobalt oxide, acetylene black and polyvinylidene fluoride are added to a stirring tank in a mass ratio of 97:1.8:1.2, and N-methylpyrrolidone solvent is added to stir and pass through a 200-mesh sieve to configure a positive electrode active material layer slurry, the solid content of which is 70wt%-75wt%; the positive electrode active material layer slurry is coated on the positive electrode current collector (aluminum foil) with a coating machine, dried at 120°C, and rolled to obtain a positive electrode sheet ;

[0068] Preparation of negative electrode sheet: 97.5wt% graphite (solid phase diffusion coefficient is 10-14), 0.7wt% conductive carbon black and 1.8wt% SBR are configured into negative electrode active material layer slurry (solid content is 40wt%-45wt%), Coat the negat...

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
elongation at breakaaaaaaaaaa
Login to View More

Abstract

The invention provides a polymer electrolyte with a gas-phase flame-retardant function and a battery. A matrix of the polymer electrolyte is formed by homopolymerizing a monomer of a non-combustible or flame-retardant substance with the gas-phase flame-retardant function or copolymerizing the monomer with a first monomer. A condensation reaction can be quickly carried out under a high-temperature condition (120-300 DEG C), and a large amount of non-combustible or flame-retardant volatile matters are generated, so that the concentration of combustible gas is reduced to be below the combustion lower limit; and meanwhile, the concentration of oxygen in the combustion area is diluted, and combustion is prevented from continuing. A condensation reaction between polymer matrixes is an endothermic reaction, and a formed thermosetting high-density cross-linked polymer network has heat and oxygen isolation functions and synergistically inhibits combustion. The polymer electrolyte also has the functions of water removal and acid removal, excellent oxidation stability and high elasticity. A secondary battery assembled by the polymer electrolyte can effectively avoid injection fire and explosion of the battery under extreme conditions, the safety of the battery is greatly improved, and the polymer electrolyte has important application value.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a polymer electrolyte with gas-phase flame retardant function and a battery. Background technique [0002] At present, commercial lithium-ion batteries use volatile, flammable, and explosive carbonate-based electrolytes, which are prone to safety accidents such as combustion and explosion when the battery is squeezed, overcharged, punctured, and other abnormal use conditions. To address this safety issue, the development of flame retardant polymer electrolytes is an effective solution. The currently developed flame retardant polymer electrolyte matrix mainly includes polyphosphate (eg, Chinese invention patent CN 106832259 B), fluorine-containing polymers (eg, Chinese invention patent CN 111224156 B) and polybenzoxazine. Specifically, Chinese invention patent CN 106832259 B discloses a polymeric phosphate ester containing biphenyl ring and phenanthrene ring structure in the mo...

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): H01M10/0567H01M10/0568H01M10/058H01M10/42H01M4/62
CPCH01M10/0567H01M10/0568H01M10/058H01M10/4235H01M4/621H01M4/625H01M2300/0025Y02P70/50Y02E60/10
Inventor 陈超李真棠
Owner 广东马车动力科技有限公司
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