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

Al-centered polymer electrolyte and preparation method and application thereof

A composite electrolyte and polymer technology, applied in the field of electrochemical energy storage, can solve the problems of low lithium ion migration number, narrow electrochemical window, and low conductivity, and achieve wide electrochemical window, high conductivity, and easy preparation Effect

Pending Publication Date: 2021-06-18
BEIJING WELION NEW ENERGY TECH CO LTD
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the polymer electrolyte is one of the solid electrolytes, but the traditional polymer electrolyte cannot be used in high-power batteries due to various problems such as low conductivity, narrow electrochemical window, and low lithium ion migration number.

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
  • Al-centered polymer electrolyte and preparation method and application thereof
  • Al-centered polymer electrolyte and preparation method and application thereof
  • Al-centered polymer electrolyte and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0044] A method for preparing a polymer electrolyte centered on Al, comprising the following steps:

[0045] S1, the aluminum source and R 1 The raw materials are stirred evenly under an inert atmosphere, heated to 50-200°C, and reacted for 0.5-10 hours to obtain a precursor monomer;

[0046] S2, adding lithium salt to the precursor monomer obtained in step S1 at room temperature, stirring and reacting for 0.5-3 hours under an inert atmosphere, to obtain a precursor monomer containing lithium salt;

[0047] S3, R at room temperature 2 Add the raw material to the lithium salt-containing precursor obtained in step S2, stir and react under an inert atmosphere for 0.5-5 hours, raise the temperature to 50-200° C., and continue the reaction for 0.5-10 hours to obtain a lithium-salt-containing polymer;

[0048] S4. Distilling under reduced pressure to remove impurities in the lithium salt-containing polymer to obtain a high-purity polymer electrolyte.

[0049]In the above preparat...

Embodiment 1

[0052] A method for preparing a polymer electrolyte centered on Al, comprising the following steps:

[0053] S1. Add 1.62g of aluminum ethoxide and 5.5g of mPEG550 into the flask, pass in an inert gas and stir for 1 hour to form a uniform mixture, heat at 100°C, and react for 2 hours to prepare the precursor monomer.

[0054] S2. Add 2.44 g of LiODFB after cooling down to room temperature, and continue stirring for 1 hour to obtain a lithium-containing precursor monomer.

[0055] S3. Add 2 g of PEG200 at room temperature, stir for 1 h, then raise the temperature to 100° C., and react for 2 h to obtain a lithium salt-containing polymer.

[0056] S4. Distilling under reduced pressure at 80° C. to remove small molecule alcohol impurities generated by the reaction to obtain the high-purity polymer electrolyte.

[0057] Conductivity test: hot press the polymer electrolyte prepared in this example into a Φ16mm disc P1 with a thickness of 1.125mm, and then make a battery of stainles...

Embodiment 2

[0060] A method for preparing a polymer electrolyte centered on Al, comprising the following steps:

[0061] S1. Add 2.04g of aluminum isopropoxide and 7.93g of mPEG-Ph-FSI into the flask, pass in an inert gas and stir for 2 hours to form a uniform mixture, heat at 90°C, and react for 10 hours to prepare the precursor monomer.

[0062] S2. Add 4.1 g of LiFSI after cooling down to room temperature, and continue stirring for 3 hours to obtain a lithium-containing precursor monomer.

[0063] S3. Add 6.43 g of PEG-Ph-FSI at room temperature, stir for 1 h, then raise the temperature to 120° C., and react for 4 h to obtain a lithium-containing polymer.

[0064] S4. Distilling under reduced pressure at 80° C. to remove small molecule alcohol impurities generated by the reaction to obtain the high-purity polymer electrolyte.

[0065] Conductivity test: The polymer electrolyte prepared in this example is hot-pressed into a Φ16mm disc P2 with a thickness of 2.294mm, and then made into ...

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
Conductivityaaaaaaaaaa
Conductivityaaaaaaaaaa
Login to View More

Abstract

The invention discloses an Al-centered polymer electrolyte and a preparation method thereof, and belongs to the technical field of electrochemical energy storage. The polymer electrolyte is composed of a first polymer or a mixture of the first polymer and a lithium salt, the first polymer takes Al as a center and forms a cross-linked structure, and is prepared through steps: uniformly stirring an aluminum source and R1 raw materials in an inert atmosphere and then carrying out a heating reaction to prepare a precursor monomer; adding the lithium salt into the precursor monomer at room temperature, stirring and reacting in an inert atmosphere to obtain the precursor monomer containing the lithium salt, then adding the raw material of R2 into the precursor monomer containing the lithium salt, and stirring and heating and reacting in the inert atmosphere to obtain a polymer containing the lithium salt; and finally, carrying out reduced pressure distillation. The polymer electrolyte disclosed by the invention is easy to prepare, simple to form, excellent in mechanical property, relatively high in conductivity and relatively wide in electrochemical window.

Description

technical field [0001] The invention relates to the technical field of electrochemical energy storage, mainly to the field of lithium batteries, in particular to an Al-centered polymer electrolyte and its preparation method and application. Background technique [0002] Lithium-ion batteries have the advantages of high energy density and output voltage, no memory effect, and environmental friendliness, and have been widely used in electronics, aerospace, electric vehicles and other fields. Electrolyte is one of the four key materials required for the manufacture of lithium batteries, and its performance largely determines the power density, cycle stability, safety performance, high and low temperature performance, and service life of the battery. Liquid electrolytes are commonly used at present, but because liquid electrolytes contain organic solvents with low boiling points, it is easy to cause safety accidents such as combustion, explosion, and liquid leakage. In order to...

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
IPC IPC(8): H01M10/0565H01M10/058H01M10/0525H01M10/42
CPCH01M10/0565H01M10/058H01M10/0525H01M10/4235H01M2300/0091Y02P70/50Y02E60/10
Inventor 王亚飞俞会根
Owner BEIJING WELION NEW ENERGY TECH CO LTD
Features
  • Generate Ideas
  • 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