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

Low-temperature sodium-ion battery electrolyte with flame-retardant function

A sodium-ion battery and electrolyte technology, which is applied in electrolytes, secondary batteries, secondary battery repair/maintenance, etc., can solve the problems of poor electrochemical performance of flame-retardant electrolytes and poor performance of sodium-ion batteries, and achieve a solution Poor performance, high viscosity, and the effect of preventing battery fire

Inactive Publication Date: 2021-10-26
徐州浩华能源科技有限公司
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the present invention is the poor performance of sodium-ion batteries at low temperatures and the poor electrochemical performance of conventional flame-retardant electrolytes

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
  • Low-temperature sodium-ion battery electrolyte with flame-retardant function
  • Low-temperature sodium-ion battery electrolyte with flame-retardant function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Weigh 1.5g of NaFSI and dissolve it in 1.5g of TMP solution, stir it on a magnetic stirrer at 40°C for 0.5h, add 3g of F-EPE solvent and 0.12g of FEC additive, then stir at room temperature for 1h Until the solution is mixed uniformly, a low-temperature sodium-ion battery electrolyte with a flame-retardant function is obtained. The molar concentration of NaFSI is 1.5mol / L.

Embodiment 2

[0022] Weigh 1.5g of NaTFSI and dissolve it in 1.7g of TEP solution, stir it on a magnetic stirrer at 40°C for 0.5h, add 3.8g of HFE solvent and 0.14g of FEC additive, and then stir at room temperature for 1h to The solutions are evenly mixed to obtain a low-temperature sodium-ion battery electrolyte with a flame-retardant function. The molar concentration of NaTFSI is 1.4mol / L.

Embodiment 3

[0024] Weigh 1.5g of NaClO 4 Dissolve in 4.5g of TEP solution first, heat it on a magnetic stirrer at 40°C for 0.5h, then add 9.5g of HFE solvent and 0.31g of VC additive, and then stir at room temperature for 1h until the solution is evenly mixed to obtain Low temperature sodium ion battery electrolyte with flame retardant function. of which NaClO 4 The molar concentration is 1.1mol / L.

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 low-temperature sodium-ion battery electrolyte with a flame-retardant function, which comprises a solute, a solvent and an additive, and the solute is bis(fluorosulfonyl)imide sodium salt 0.9-2M; the solvent is a mixed solution of one or more of tributyl phosphate, triethyl phosphate, trimethyl phosphite, tris (2, 2, 2-trifluoroethyl) phosphate, ethyl nonafluorobutyl ether and 1, 1, 2, 2-tetrafluoroethyl-2, 2, 2-trifluoroethyl ether, and the additive is one or more of fluoroethylene carbonate, vinylene carbonate, 1, 3-propane sultone, succinic anhydride and ethylene sulfate. According to the invention, the sodium ion battery can stably work under a low-temperature environment condition, the electrolyte has the characteristic of non-combustion, and the problem of poor performance of the sodium ion battery at a low temperature can be solved while the battery is prevented from being on fire. The low-temperature-resistant flame-retardant lithium ion battery electrolyte can keep the battery at a relatively large capacity at a low temperature, adapts to a low-temperature environment, has a flame-retardant function and has relatively high viscosity at the low temperature.

Description

technical field [0001] The invention relates to the technical field of low-temperature sodium-ion batteries, in particular to a low-temperature sodium-ion battery electrolyte with a flame-retardant function. Background technique [0002] As technology advances rapidly and intermittent renewable energy generation technologies such as wind, solar and wave power become more common and integrated into the grid, scaling battery technology to large-scale storage will become necessary due to the high concentration of sodium on Earth With high abundance, wide distribution and low price, sodium-ion batteries have attracted extensive attention from researchers at home and abroad as a large-scale energy storage power source, and may become a new battery technology that is expected to be used in energy storage systems after lithium-ion batteries. However, under low temperature conditions, the capacity and power of sodium-ion batteries will seriously decline. The main reasons are (1) the...

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): H01M10/0569H01M10/054H01M10/42A62C3/16
CPCH01M10/0569H01M10/054H01M10/4235A62C3/16H01M2300/0037Y02E60/10
Inventor 刘浩
Owner 徐州浩华能源科技有限公司
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