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

Solid electrolyte membrane, method for manufacturing same, and method for selecting solid electrolyte membrane

A solid electrolyte membrane, solid electrolyte technology, applied in solid electrolyte, non-aqueous electrolyte storage battery, electrolyte and other directions, can solve problems such as difficult to visually determine, difficult to determine the pores of porous sheet solid electrolyte material fully filled, etc., to reduce manufacturing costs, The effect of easy deformation and excellent strength

Pending Publication Date: 2021-11-12
LG ENERGY SOLUTION LTD
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the case of such a composite type solid electrolyte membrane, there is a problem in that it is difficult to determine whether the pores of the porous sheet are sufficiently filled with the solid electrolyte material.
In particular, in the case of conventional polymer solid electrolytes, which have high light transmittance and are transparent, it is difficult to determine with the naked eye

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
  • Solid electrolyte membrane, method for manufacturing same, and method for selecting solid electrolyte membrane
  • Solid electrolyte membrane, method for manufacturing same, and method for selecting solid electrolyte membrane
  • Solid electrolyte membrane, method for manufacturing same, and method for selecting solid electrolyte membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0088] First, polyethylene oxide (PEO, Mw=4,000,000 g / mol) was dissolved in acetonitrile (AN) as a solvent to prepare a polymer solution having a concentration of 4% by weight. Here, LiTFSI as a lithium salt is further introduced such that [EO] / [Li + ] may be in a molar ratio of 18 / 1. The polymer solution was stirred overnight at 70° C. so that the PEO and lithium salt could be fully dissolved therein. Next, an additive solution containing an initiator and a curing agent is prepared. Curing agent is PEGDA (Mw=575), initiator is benzoyl peroxide (BPO), wherein the consumption of polyethylene diacrylate (PEGDA) is 20% by weight (based on PEO), and the consumption of BPO is 1% (based on PEGDA), and acetonitrile was used as solvent. The additive solution was stirred for about 1 hour so that the ingredients introduced therein could be thoroughly mixed. Then, add the additive solution to the polymer solution and mix it thoroughly. After that, 10 μL of commercially available fou...

Embodiment 2

[0090] A solid electrolyte membrane layer and a porous nonwoven web were prepared in the same manner as in Example 1. The solid electrolyte membrane layer is placed on a porous nonwoven web (87% porosity, 40 μm in thickness), and pressed at 25° C. by roll pressing, so that the solid electrolyte membrane layer can be pressed into the porous nonwoven web . In this way, a solid electrolyte membrane is obtained comprising a solid electrolyte membrane layer integrated with a porous nonwoven web. The solid electrolyte membrane has a thickness of about 50 μm.

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
Ionic conductivityaaaaaaaaaa
Ionic conductivityaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for manufacturing a solid electrolyte membrane. According to the present invention, the method for manufacturing a solid electrolyte membrane can check, by means of a visible method, the degree of charge of a solid electrolyte material in a porous sheet, and thus selection of a material for a solid electrolyte membrane and a manufacturing process therefor can be optimized through a simple method. In addition, manufacturing costs for a solid electrolyte membrane manufactured by applying a material and a manufacturing process, which are selected according to the checking method, can be reduced, and the shape of the solid electrolyte membrane can be readily altered, and thus the solid electrolyte membrane facilitates processing when applied to various shapes of batteries. Additionally, since a porous polymer material such as a nonwoven fabric and a solid electrolyte material are combined, the solid electrolyte membrane according to the present invention can be manufactured into a thin film shape while having excellent strength, and thus is advantageous in improving the energy density of a battery.

Description

technical field [0001] This application claims the priority of Korean Patent Application No. 10-2019-0031407 filed on March 19, 2019 and Korean Patent Application No. 10-2020-0032753 filed on March 17, 2020 in Korea. The invention relates to an electrolyte membrane for an all-solid battery, an all-solid battery comprising the electrolyte membrane, and a method for manufacturing the electrolyte membrane. Background technique [0002] A lithium-ion battery using a liquid electrolyte has a structure of a negative electrode and a positive electrode defined by a separator, so when the separator is damaged due to deformation or external impact, it may cause a short circuit, leading to risks such as overheating or explosion. Therefore, it can be said that the development of a solid electrolyte capable of ensuring safety is a very important issue in the field of lithium ion secondary batteries. [0003] A lithium secondary battery using a solid electrolyte is advantageous in that i...

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): H01M10/056H01M10/0562H01M10/0565H01M10/42H01M10/052
CPCY02E60/10H01M10/052H01M10/056H01M10/4235H01M2300/0068H01M2300/0082H01M2300/0094H01M50/403H01M50/409H01M50/491H01M50/497H01M10/0565H01M2300/0065H01M10/0562
Inventor 李廷弼金恩妃睦恩庚
Owner LG ENERGY SOLUTION 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