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-

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

Example Embodiment

[0044] A method of preparing an electrolyte center-centric electrolyte in Al, comprising the steps of:

[0045] S1, aluminum source and r 1 The raw material was mixed even under an inert atmosphere, heated to 50 to 200 ° C, and the reaction was 0.5 to 10 h, and the precursor is made;

[0046] S2, at room temperature to the precursor mean obtained in step S1, stirring at an inert atmosphere of 0.5 to 3 h, resulting in a precursor-free single body containing a lithium salt;

[0047] S3, in room temperature 2 The raw material is added to the lithium-containing precursor obtained in step S2, and the stirring reaction is 0.5 to 5 hours under an inert atmosphere, warmed to 50 to 200 ° C, and the reaction is continued to obtain a lithium salt;

[0048] S4, evaporated to remove impurities in a lithium salt-containing polymer to give a high purity electrolyte.

[0049]In the above preparation method, the raw material of R1 is selected from the group consisting of polyethylene glycol monoal...

Example Embodiment

[0051] Example 1:

[0052] A method of preparing an electrolyte center-centric electrolyte in Al, comprising the steps of:

[0053] S1, 1.62 g of ethanol aluminum and 5.5 g of MPEG 550 were added to the flask, and the inert gas was stirred for 1 h, and a uniform mixture was formed, heated 100 ° C, and the pre-drive form was obtained.

[0054] S2 was reduced to room temperature to add 2.44 g of LiODFB, and stirring was continued for 1 h to obtain a pre-probe figures containing lithium.

[0055] S3, 2 g of PEG200 was added at room temperature, stirred for 1 h, then warmed up 100 ° C, reaction 2 h, resulting in a lithium salt.

[0056] S4 was distilled at 80 ° C, and the reaction-formed small molecular alcohol impurities were removed to give a high purity electrolyte.

[0057] Conductivity test: The polymer electrolyte from which the present embodiment is electrolyte heat into a circumferential P1 of φ16 mm, and its thickness is 1.125 mm, and then produced into a battery of stainless...

Example Embodiment

[0059] Example 2:

[0060] A method of preparing an electrolyte center-centric electrolyte in Al, comprising the steps of:

[0061] S1, 2.04 g of isopropanol aluminum and 7.93 g of MPEG-PH-FSI were added to the flask, and the inert gas was stirred for 2 h, and a uniform mixture was formed, heated 90 ° C, and the reaction 10h was prepared.

[0062] S2 was reduced to room temperature to add 4.1 g of LIFSI, continued to stir for 3 h, resulting in a lithium pre-prodrug 1.

[0063] S3, 6.43 g of PEG-pH-FSI was added at room temperature, stirred for 1 h, then warmed by 120 ° C, reaction 4h, to obtain a lithium-containing polymer.

[0064] S4 was distilled at 80 ° C, and the reaction-formed small molecular alcohol impurities were removed to give a high purity electrolyte.

[0065] Conductivity test: The polymer electrolyte by the polymer produced in the present embodiment is purified into a circular P2 of φ16 mm, which has a thickness of 2.294 mm, and then produces stainless steel / P2 / ...

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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap