Ternary electrolyte containing unsaturated carbon chains and preparation and application thereof

An electrolyte, unsaturated technology, applied in the fields of compounds, circuits, organic chemistry, etc. containing elements of Group 3/13 of the periodic table, which can solve problems such as uncertainty in correlation or inference, and achieve electrochemical performance improvement, expansion and expansion. Effects of wide electrochemical window, improved coulombic efficiency and cycling performance

Inactive Publication Date: 2022-06-03
BEIJING WELION NEW ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is because the electrical and other chemical properties of the chain containing unsaturated bonds are relatively special and self-contained, and the three strongly polar -OBF 3 When M is connected to an unsaturated carbon chain, it will also affect the chemical and physical properties of the entire chain, which are substantially different from heterochains and ring structures, etc., so the correlation or inference between each other is different. Sure

Method used

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  • Ternary electrolyte containing unsaturated carbon chains and preparation and application thereof
  • Ternary electrolyte containing unsaturated carbon chains and preparation and application thereof
  • Ternary electrolyte containing unsaturated carbon chains and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Example 1: Raw materials

[0060] Preparation method: under nitrogen atmosphere, mix 0.01 mol of raw material and boron trifluoride tetrahydrofuran complex (4.19 g, 0.03 mol) in 15 ml of ethylene glycol dimethyl ether, and react at room temperature for 12 hours. The obtained mixed solution was dried under reduced pressure under the conditions of 40° C. and a vacuum degree of about -0.1 MPa to remove the solvent to obtain an intermediate. Lithium ethoxide (1.56g, 0.03mol) was dissolved in 10ml of ethanol and slowly added to the intermediate, stirred at 30°C for 8 hours, and the resulting mixture was dried under reduced pressure at 45°C and a vacuum of about -0.1MPa. , the obtained solid was washed three times with n-butyl ether, filtered and dried to obtain product M1, wherein Q is OBF 3 Li. The yield was 83%, NMR as figure 1 shown.

Embodiment 2

[0061] Example 2: Raw materials

[0062] Preparation method: under argon atmosphere, metal lithium sheet (0.21 g, 0.03 mol) was slowly added to 0.01 mol of raw material, reacted at room temperature for 4 hours, and then heated to 50° C. until the lithium sheet reacted completely to obtain an intermediate. Boron trifluoride butyl ether complex (5.94g, 0.03mol) was added to the intermediate, and the reaction was stirred at 30°C for 6 hours, and the obtained mixed solution was dried under reduced pressure at 40°C and a vacuum degree of about -0.1MPa. , the obtained solid was washed three times with isopropyl ether, filtered and dried to obtain product M2, wherein Q is OBF 3 Li. The yield was 84%, NMR as figure 2 shown.

Embodiment 3

[0063] Example 3: Raw materials

[0064] Preparation method: under argon atmosphere, mix 0.01 mol of raw material and boron trifluoride ether complex (4.26 g, 0.03 mol) in 15 ml of THF, and react at room temperature for 12 hours. The obtained mixed solution was dried under reduced pressure under the conditions of 30° C. and a vacuum degree of about -0.1 MPa to remove the solvent to obtain an intermediate. 18.80ml of butyllithium in hexane solution (c=1.6mol / L) was added to the intermediate, the reaction was stirred at room temperature for 6 hours, and the resulting mixed solution was dried under reduced pressure at 40°C and a vacuum of about -0.1MPa. , the obtained crude product was washed three times with cyclohexane, filtered and dried to obtain product M3, wherein Q is OBF 3 Li. The yield was 86%, NMR as image 3 shown.

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Abstract

The invention relates to a ternary electrolyte containing unsaturated carbon chains and preparation and application thereof, the electrolyte comprises boron trifluoride salt represented by a general formula I: in the general formula I, R, R1 or R4 are independently a first chain without or containing at least one atom; r, R1 and R4 are not none at the same time; any one atom of R, R1, R2, R3 or R4 is connected with-R5-OBF3M, and-R5-OBF3M is connected to any one atom of R, R1, R2, R3 or R4; r2, R3 or R5 are independently a second chain free of or containing at least one atom; m is a metal cation; the first chain and the second chain are carbon chains; h on any C in the first chain and the second chain can be independently substituted by a substituent group, and the first chain, the second chain and the chain substituent group at least contain one unsaturated bond. The boron trifluoride salt can be used as an additive in a battery and a polymeric monomer in a polymer electrolyte, can be applied to a liquid battery, a mixed solid-liquid battery, a semi-solid battery, a gel battery, a quasi-solid-state battery and an all-solid-state battery, and has a good effect.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a ternary electrolyte containing unsaturated carbon chains and its preparation and application. Background technique [0002] Electrolyte is an important and necessary component of batteries. Batteries have the advantages of high energy density, high voltage, many cycles, and long storage time. Since commercialization, they have been widely used in electric vehicles, energy storage power stations, drones, and portable devices. Regardless of the application direction, it is urgent to improve the energy density and cycle performance of the battery under the premise of ensuring the safety of the battery. [0003] The current development of liquid batteries mainly includes positive electrodes, negative electrodes, electrolytes and separators. To improve the energy density of the batteries is to increase the working voltage and discharge capacity of the batteries, that is, to match ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F5/02H01M10/0525H01M10/0567C08F130/06C08F138/00C08F136/14C08F136/20
CPCC07F5/022H01M10/0525H01M10/0567C08F130/06C08F138/00C08F136/14C08F136/20Y02P70/50
Inventor 俞会根杨萌
Owner BEIJING WELION NEW ENERGY TECH CO LTD
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