Low-temperature sodium-ion battery electrolyte with flame-retardant function
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
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
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
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
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
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
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more