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

A peo-pmma solid electrolyte membrane

A technology of solid electrolyte membrane and electrolyte, which is applied in the direction of solid electrolyte, electrolyte, non-aqueous electrolyte, etc., can solve the problems of poor contact, affecting safety and stability, and the mechanical properties of the electrolyte cannot meet the requirements of positive and negative materials at the same time, so as to achieve stability The effect of good performance, excellent mechanical properties and electrical conductivity properties

Active Publication Date: 2021-08-20
XIANGTAN UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. The mechanical properties of the electrolyte cannot meet the needs of positive and negative materials at the same time
If the hardness of the electrolyte membrane is low, the side facing the negative electrode is easy to be pierced due to the growth of lithium dendrites caused by the accumulation of lithium ions, which affects safety and stability
At the same time, if the hardness of the electrolyte membrane is high, it will lead to poor contact between the side facing the positive electrode and the interface material, resulting in a large interface impedance and affecting product performance.
[0006] 2. The single-layer PEO-PMMA electrolyte membrane has relatively simple performance

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 peo-pmma solid electrolyte membrane
  • A peo-pmma solid electrolyte membrane
  • A peo-pmma solid electrolyte membrane

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach

[0052] Specific embodiments: a PEO-PMMA solid electrolyte membrane is prepared according to the following method steps:

[0053] In step 1, the raw materials PEO, PMMA, inorganic lithium salt, plasticizer and inorganic solid particle materials are mixed in liquid phase according to the ratio requirements of the multi-layers to obtain a three-layer casting gel material; step 1 specifically includes:

[0054] Step 1.1, dissolve PEO and PMMA into the corresponding amount of organic solvent respectively, stir until gelatinous and then mix; the organic solvent for dissolving PEO is acetonitrile or DMF solution;

[0055] Step 1.2, the mixed gel was placed at 40°C and stirred for 6 hours;

[0056] Step 1.3, then add inorganic lithium salt, plasticizer and inorganic solid particle material, then grind in the glove box, and then stir it with magnetic force until it is completely decomposed, the solution is uniform and consistent gel, and the gel material for casting is obtained .

[...

experiment example 1-10

[0062] Experimental example 1-10: On the basis of meeting the requirements of each step of the above specific implementation method, the experimental example 1-10 was obtained by using the following specific implementation steps and the 10 groups of specific parameter ranges defined in the table.

[0063] At room temperature, weigh three parts of PEO with a fixed mass (see the table for details) and three parts of PMMA with different masses, mix them in pairs and put them into three 10mL glass bottles, and then add a certain volume of acetonitrile solution and organic Stir the solution, stir each into a uniform and transparent colloid and mix them, then place them at 40°C and stir for 6 hours, then add a fixed mass of plasticizer, lithium salt and inorganic fillers, grind them and stir them magnetically for several hours until the samples are completely After dissolving, a transparent gel solution is obtained, and then the prepared 3 bottles of PEO-PMMA transparent gel solution a...

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 discloses a PEO-PMMA solid-state electrolyte membrane, which is characterized in that it comprises multi-layer electrolyte matrix layers stacked in layers, each electrolyte matrix layer is bonded and solidified as one, and each electrolyte matrix layer is the same A solid mixture obtained by uniformly mixing and merging various raw materials. The raw materials include PEO, PMMA, inorganic lithium salt, plasticizer and inorganic solid particle materials. The hardness of each electrolyte matrix layer is arranged layer by layer from low to high . The solid electrolyte membrane of the invention can simultaneously take into account safety, stability and good interfacial compatibility, and has excellent mechanical properties and electrical conductivity properties.

Description

technical field [0001] The invention relates to the technical field of solid-state batteries, in particular to a PEO-PMMA solid-state electrolyte membrane for solid-state batteries. Background technique [0002] With the increasing destruction of the global environment and the depletion of fossil fuels, it is imminent to find a new green energy. Lithium-ion power batteries are expected to be a new generation of green energy. However, lithium-ion batteries with liquid electrolytes have disadvantages such as high temperature, flammability and explosion, so solid-state batteries have become the research object of the next generation to replace lithium-ion batteries. A solid-state battery is a lithium battery that uses solid electrodes and solid electrolytes. The diaphragm and electrolyte of traditional lithium-ion batteries are replaced with solid electrolyte materials, and glass compounds made of lithium and sodium are used as conductive materials to replace previous lithium b...

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): H01M10/0565H01M10/058H01M10/0525H01M10/42
CPCH01M10/0525H01M10/0565H01M10/058H01M10/4235H01M2300/0082H01M2300/0091Y02E60/10Y02P70/50
Inventor 欧阳晓平叶雪刘剑洪熊伟黄涛曹红帅
Owner XIANGTAN UNIV
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