Preparation method of sulfur-containing polymer lithium battery electrolyte

A polymer and electrolyte technology, applied in the field of preparation of sulfur-containing polymer lithium battery electrolyte, can solve the problems of poor dissociation and transfer effect of lithium ions, reduce the conductivity of polymer films, etc. Dissociation and transfer effect, effect of lowering glass transition temperature

Inactive Publication Date: 2019-07-23
山东高质新能源检测有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the prior art, the polymer electrolyte is prone to crystallization at low temperature, and the dissociation and transfer effect of lithium ions is poor, thereby reducing the conductivity of the polymer film. Preparation method of sulfur polymer lithium battery electrolyte to overcome deficiencies in current practical applications

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A preparation method of sulfur-containing polymer lithium battery electrolyte includes:

[0022] Step 1: In parts by weight, mix 60 parts of sulfide, 5 parts of ion conductive agent, 1 part of crosslinking agent, and then add 2 parts of binder, 0.5 part of thickener, 1 part of additive, and stir evenly to obtain Solutions of sulfur-containing polymers;

[0023] Step 2: Add 10 parts of lithium perchlorate to the above-mentioned sulfur-containing polymer solution, and continue stirring after adding until it is completely dissolved to obtain a sulfur-containing polymer-lithium salt solution;

[0024] Step 3: Adhere the scotch tape to a clean glass plate in parallel lines, control the thickness by the number of layers of the tape, and then cast the stirred sulfur-containing polymer-lithium salt solution in the middle of the tape for medical surgery Blade, gently scrape along the track of the tape;

[0025] Step 4: Place the glass plate in a vacuum drying box and vacuum dry for 10 ...

Embodiment 2

[0027] A preparation method of sulfur-containing polymer lithium battery electrolyte includes:

[0028] Step 1: In parts by weight, mix 65 parts of sulfide, 5.5 parts of ion conductive agent, and 1.5 parts of crosslinking agent, then add 2.5 parts of binder, 0.8 parts of thickener, 1.5 parts of additives, and stir evenly to obtain Solutions of sulfur-containing polymers;

[0029] Step 2: Add 13 parts of lithium hexafluorophosphate to the above-mentioned sulfur-containing polymer solution, and continue stirring after adding until it is completely dissolved to obtain a sulfur-containing polymer-lithium salt solution;

[0030] Step 3: Adhere the scotch tape to a clean glass plate in parallel lines, control the thickness by the number of layers of the tape, and then cast the stirred sulfur-containing polymer-lithium salt solution in the middle of the tape for medical surgery Blade, gently scrape along the track of the tape;

[0031] Step 4: Place the glass plate in a vacuum drying box an...

Embodiment 3

[0033] A preparation method of sulfur-containing polymer lithium battery electrolyte includes:

[0034] Step 1: In parts by weight, mix 70 parts of sulfide, 6 parts of ion conductive agent, 2 parts of crosslinking agent, and then add 3 parts of binder, 1 part of thickener, and 2 parts of additives, and stir evenly to obtain Solutions of sulfur-containing polymers;

[0035] Step 2: Add 15 parts of lithium hexafluoroarsenate to the above-mentioned sulfur-containing polymer solution, and continue to stir until it is completely dissolved after adding, to obtain a sulfur-containing polymer-lithium salt solution;

[0036] Step 3: Adhere the scotch tape to a clean glass plate in parallel lines, control the thickness by the number of layers of the tape, and then cast the stirred sulfur-containing polymer-lithium salt solution in the middle of the tape for medical surgery Blade, gently scrape along the track of the tape;

[0037] Step 4: Place the glass plate in a vacuum drying oven and vacuu...

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

No PUM Login to view more

Abstract

The invention relates to the technical field of battery materials, in particular to a preparation method of a sulfur-containing polymer lithium battery electrolyte. The preparation method comprises the following steps: uniformly mixing 60-80 parts by weight of sulfide, 5-7 parts by weight of an ionic conductive agent and 1-3 parts by weight of a cross-linking agent, then adding 2-4 parts by weightof an adhesive, 0.5-1.5 parts by weight of a thickening agent and 1-3 parts by weight of an additive, and uniformly stirring to obtain a sulfur-containing polymer solution; adding 10-20 parts of lithium salt into the sulfur-containing polymer solution, and stirring until the lithium salt is completely dissolved after adding to obtain a sulfur-containing polymer-lithium salt solution; casting thewell-stirred sulfur-containing polymer-lithium salt solution to a clean glass board; and placing the glass board in a vacuum drying box, and carrying out vacuum drying at 70-80 DEG C for 10-15 h to obtain the sulfur-containing polymer lithium battery electrolyte. The ionic conductive agent can enhance the low-temperature ionic conductivity of the polymer electrolyte, and the additive (EDTA) can improve the conductivity of the polymer film.

Description

Technical field [0001] The invention relates to the technical field of battery materials, in particular to a preparation method of a sulfur-containing polymer lithium battery electrolyte. Background technique [0002] In recent years, due to resource shortage and environmental pollution, new industrial technologies such as electric vehicles have developed rapidly, and the demand for high-performance lithium-ion batteries has become more and more urgent. Among them, solid-state lithium batteries have become a research hotspot due to their high safety and excellent high-temperature performance. The solid electrolytes in lithium batteries can be divided into inorganic solid electrolytes and polymer solid electrolytes. Compared with inorganic solid electrolytes, polymer electrolytes have low conductivity, but they are easier to process and shape and are suitable for large-scale industrial production. Good development prospects. [0003] However, in the prior art, polymer electrolytes...

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 Applications(China)
IPC IPC(8): H01M10/0565
CPCH01M10/0565H01M2300/0082Y02E60/10
Inventor 韩鹏杨惠茹王磊李知远渐彬彬王艳李欣颖
Owner 山东高质新能源检测有限公司
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