Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of triblock hybrid polymer electrolyte, its preparation method and application

A polymer, triblock technology, applied in the field of triblock hybrid polymer electrolyte, can solve the problems of poor mechanical properties and low ionic conductivity of polymer electrolytes, achieve good mechanical properties, excellent thermal stability, improved Effect of Electrolyte Ion Migration Number

Active Publication Date: 2021-03-26
HUAZHONG UNIV OF SCI & TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above defects or improvement needs of the prior art, the present invention provides a tri-block hybrid polymer electrolyte and its preparation method and application, in which the key structure, composition and preparation process of the polymer electrolyte are carried out Improvement, dissolving octamercapto polysilsesquioxane, methacrylate-terminated polyester-polyethylene glycol-polyester triblock polymer and metal salt in an organic solvent, and performing ultraviolet light curing reaction, using hydroxyl The ring-opening polymerization reaction with cyclic lactones and the thiol-ene reaction induced by ultraviolet light without photosensitizers are used to prepare triblock hybrid polymer electrolytes, thereby solving the problems of low ion conductivity and poor mechanical properties of polymer electrolytes. technical problem

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
  • A kind of triblock hybrid polymer electrolyte, its preparation method and application
  • A kind of triblock hybrid polymer electrolyte, its preparation method and application
  • A kind of triblock hybrid polymer electrolyte, its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0048] In some embodiments, the preparation method of the octamercapto polysilsesquioxane includes the following steps: dissolving γ-mercaptopropyltrimethoxysilane in an organic solvent, adding an acid, and stirring to reflux for reaction, standing still, to obtain Reaction solution; mixing the reaction solution with a precipitating agent to form a precipitate, filtering and drying to obtain the octamercaptopolysilsesquioxane.

[0049] Wherein, in some embodiments, when the octamercapto polysilsesquioxane is prepared, the stirring and reflux reaction temperature is 50-120° C.; the organic solvent is any one of tetrahydrofuran, acetonitrile, and methanol; the acid is Any one in concentrated hydrochloric acid, concentrated sulfuric acid, concentrated nitric acid; Described precipitation agent is any one in methanol, ether, n-heptane.

[0050] In some embodiments, the chemical structural formula of the γ-mercaptopropyltrimethoxysilane is as follows:

[0051]

[0052] In some ...

Embodiment 1

[0095] A triblock hybrid polymer electrolyte comprising lithium salt lithium perchlorate, octasulfide polysilsesquioxane core, methacrylate-terminated polycaprolactone-polyethylene glycol-polycaprolactone Triblock polymer (abbreviated as MA-PCL 10 -PEG 4 -PCL 10 -MA, where MA represents methacrylate, PCL 10 Represents polycaprolactone with a degree of polymerization m of 10, PEG 4 Represents a cross-linked polymer composed of polyethylene glycol (polyethylene glycol) cross-linked arms with a degree of polymerization n of 4. The mass of the lithium salt accounts for 20% of the mass of the methacrylate-terminated polycaprolactone-polyethylene glycol-polycaprolactone triblock polymer.

[0096] The preparation method of the hybrid polymer electrolyte is as follows: 15.0 liters of γ-mercaptopropyltrimethoxysilane and 30 liters of concentrated hydrochloric acid were dissolved in 300 liters of methanol solution. Under argon protection, with mechanical stirring, the reaction was ...

Embodiment 2

[0102] A triblock hybrid polymer electrolyte consisting of lithium bistrifluoromethanesulfonimide lithium salt, octasulfide polysilsesquioxane core, methacrylate-terminated polycaprolactone-polyethylene disulfide Alcohol-polycaprolactone triblock polymer (MA-PCL 20 -PEG 45 -PCL 20 -MA) A cross-linked polymer composed of cross-linked arms. The mass of the lithium salt accounts for 20%, 25%, and 30% of the mass of the methacrylate-terminated polycaprolactone-polyethylene glycol-polycaprolactone triblock polymer.

[0103] The preparation method of the hybrid polymer electrolyte is as follows: 15.0 liters of γ-mercaptopropyltrimethoxysilane and 30 liters of concentrated sulfuric acid were dissolved in 300 liters of acetonitrile solution. Under argon protection, with mechanical stirring, the reaction was refluxed at 80° C. for 2 days. After the reaction is over, let it stand still, and pour out the remaining reaction solution. The white viscous liquid was dissolved with dichlo...

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
degree of polymerizationaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the field of polymer electrolytes, and particularly relates to a triblock hybrid polymer electrolyte as well as a preparation method and application thereof. The key structureand composition in the polymer electrolyte, the preparation process and the like are improved; the preparation method comprises the following steps: dissolving octamercapto polysilsesquioxane, a methacrylate-terminated polyester-polyethylene glycol-polyester triblock polymer and metal salt in an organic solvent; carrying out ultraviolet curing reaction, and preparing the triblock hybrid polymer electrolyte by utilizing ring-opening polymerization reaction of hydroxyl and cyclic lactone and thiol-ene reaction without photosensitizer ultraviolet initiation. Compared with the prior art, the problems of low ionic conductivity, low lithium ion transference number, poor mechanical properties and the like of the polymer electrolyte can be effectively solved.

Description

technical field [0001] The invention belongs to the field of polymer electrolytes, and more specifically relates to a triblock hybrid polymer electrolyte, its preparation method and application. Background technique [0002] Lithium-ion batteries have been widely used due to their high energy density, wide operating temperature range, superior cycle performance, fast charge and discharge, and long service life. However, the organic carbonate-based liquid electrolytes used in traditional lithium-ion secondary batteries have the disadvantages of being volatile and easy to leak, which can easily cause safety hazards. Compared with liquid electrolytes, solid-state lithium-ion electrolytes have better safety performance and mechanical strength. In particular, polymer electrolytes can be rationally designed according to different performance requirements, which can endow the electrolyte with multiple functions. The above advantages make polymer electrolytes one of the development...

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 Patents(China)
IPC IPC(8): H01M10/0565H01M10/0525C08G81/00
CPCC08G81/00H01M10/0525H01M10/0565H01M2300/0082Y02E60/10
Inventor 薛志刚左偲陈功解孝林周兴平
Owner HUAZHONG UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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