Supercharge Your Innovation With Domain-Expert AI Agents!

Hydrofluoroether sulfone compound and preparation method thereof, lithium-ion battery electrolyte

A technology for lithium-ion batteries and compounds, which is applied in the field of hydrofluoroether sulfone compounds and their preparation, and lithium-ion battery electrolytes, can solve problems such as high melting point and high viscosity, achieve high conductivity, improve pressure resistance, and good The effect of compatibility

Active Publication Date: 2016-04-06
湖南福邦新材料有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the disadvantages of high melting point and high viscosity of sulfone compounds, it needs to be used with a co-solvent

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
  • Hydrofluoroether sulfone compound and preparation method thereof, lithium-ion battery electrolyte
  • Hydrofluoroether sulfone compound and preparation method thereof, lithium-ion battery electrolyte
  • Hydrofluoroether sulfone compound and preparation method thereof, lithium-ion battery electrolyte

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] 1.1 Mix 161g (2mol) Cl-CH 2 CH 2 -OH was added to a 0.5L flask, and 28g (0.5mol) of potassium hydroxide was added under stirring conditions, and then the system gas was replaced with nitrogen three times, heated to 35°C, and 100.8g (2.1mol) of CH 3 -SH is slowly added dropwise to the flask. During the dropping process, use a room temperature water bath to keep the system temperature between 30°C and 40°C. After the dropwise addition is completed, continue to stir at room temperature for 1 hour, and the mixture is rectified under reduced pressure to obtain the product hydroxyethyl Methyl sulfide, the purity is 99.9%, the yield is 84%.

[0070] 1.2 Add 184g (2mol) of the hydroxyethyl methyl sulfide obtained in 1.1 to a 0.5L flask, and slowly add 128g (4mol) of hydrogen peroxide dropwise under vigorous stirring, and keep the reaction in a water bath at room temperature during the dropwise addition The temperature is between 20°C and 30°C. After the dropwise addition, sti...

Embodiment 2

[0078] Add 248g (2mol) of hydroxyethylmethyl sulfone obtained in 1.2 to a 0.5L high-pressure reactor, add 28g (2mol) of potassium hydroxide under stirring conditions, seal the reactor, vacuumize, and replace the system gas with nitrogen three times , and then vacuumize, feed 0.1Mpa hexafluoropropylene, heat to 60°C, intermittently feed hexafluoropropylene, keep the pressure in the kettle at 0.3-0.4MPa, wait until the pressure of the reactor does not change, stop the reaction, and mix the material with water After washing and phase separation, add 10ml of bromine to the organic phase, stir at room temperature for 2h, then add sodium thiosulfate solution to wash until neutral, after phase separation, rectify to obtain 99.9% purity of formula (I-2) Hydrofluoroether sulfone compounds, the yield is 70%.

[0079]

[0080] The hydrofluoroether sulfone compound represented by the formula (I-2) obtained in Example 2 was tested by nuclear magnetic resonance, and its hydrogen nuclear ...

Embodiment 3

[0082] Add 248g (2mol) of hydroxyethylmethyl sulfone obtained in 1.2 to a 0.5L high-pressure reactor, add 28g (2mol) of potassium hydroxide under stirring conditions, seal the reactor, vacuumize, and replace the system gas with nitrogen three times , then vacuumize, feed 0.1Mpa tetrafluoropropene, heat to 60°C, intermittently feed 200g (2mol) tetrafluoropropene, keep the pressure in the kettle at 0.3-0.4MPa, stop the reaction when the pressure of the reactor does not change anymore , the mixed material was washed with water, after phase separation, 10ml bromine was added to the organic phase, stirred at room temperature for 2h, then sodium thiosulfate solution was added to wash to neutrality, after phase separation, rectification obtained the formula (I-3 ) The hydrofluoroether sulfone compound shown in ) has a yield of 71%.

[0083]

[0084] The hydrofluoroether sulfone compound represented by the formula (I-3) obtained in Example 3 was tested by nuclear magnetic resonance...

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 provides a hydrofluoroether sulfones compound and a preparation method thereof as well as lithium-ion battery electrolyte. The lithium-ion battery electrolyte comprises a lithium salt, a solvent and the hydrofluoroether sulfones compound shown as the formula (I). Compared with the prior art, the hydrofluoroether sulfones compound is added into the hydrofluoroether sulfones compound shown as the formula (I) contains a hydrofluoroether radical. Firstly, the hydrofluoroether sulfones compound shown as the formula (I) keeps the high voltage resistance advantage of the sulfones compound and the high voltage resistance of the electrolyte can be improved; the hydrofluoroether radical is good for overcoming the disadvantages of the sulfones compound that the smelting point and the viscosity are high and has high conductivity; then, the hydrofluoroether sulfones compound, an electrolyte common solvent and the lithium salt have good compatibility and a homogeneous solution is easy to form; finally, the hydrofluoroether sulfones compound shown as the formula (I) has the advantages of hydrofluoroether compounds and is good for improving the flashing point of the electrolyte, so that the electrolyte has good fire resistance.

Description

technical field [0001] The invention belongs to the technical field of lithium-ion batteries, and in particular relates to hydrofluoroether sulfone compounds, a preparation method thereof, and an electrolyte for lithium-ion batteries. Background technique [0002] Safety is a key issue restricting the development of large-capacity and high-power lithium-ion batteries. At present, organic carbonates are widely used as solvents in electrolytes of lithium-ion secondary batteries, super batteries and capacitors, such as propylene carbonate (PC), ethylene carbonate (EC), dimethyl carbonate (DMC), etc. Liquid has excellent electrochemical performance, but due to the disadvantages of low flash point (less than 30°C) and flammability of organic carbonate, the battery is extremely easy to catch fire or even explode under overcharge and overheating conditions. Therefore, in recent years, battery research has mainly focused on two aspects, one is to explore electrolytes with a higher ...

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): C07C317/18C07C315/04H01M10/0567
CPCY02E60/10
Inventor 周济苍洪满贵仲晓玲
Owner 湖南福邦新材料有限公司
Features
  • R&D
  • 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