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Ternary unsaturated carbocyclic boron trifluoride salt electrolyte as well as preparation method and application thereof

A boron trifluoride and unsaturated technology, which is applied in the field of ternary unsaturated carbocyclic boron trifluoride salt electrolyte and its preparation, can solve problems such as correlation or deducibility uncertainty, and achieve electrochemical performance Effects of improving, hindering direct contact, and widening the electrochemical window

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 properties of the unsaturated bond itself are quite special. When it exists on the ring, it will affect the chemical and physical properties of the entire ring. There are substantial differences, so the relationship or inference between each other is uncertain

Method used

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  • Ternary unsaturated carbocyclic boron trifluoride salt electrolyte as well as preparation method and application thereof
  • Ternary unsaturated carbocyclic boron trifluoride salt electrolyte as well as preparation method and application thereof
  • Ternary unsaturated carbocyclic boron trifluoride salt electrolyte as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Example 1: Raw materials M1

[0068] 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 45°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 the product M1. The yield was 86%.

Embodiment 2

[0069] Example 2: Raw materials M2

[0070] 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 (tetrahydrofuran), 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 M2. The yield was 89%, NMR as figure 1 shown.

Embodiment 3

[0071] Example 3: Raw materials M3

[0072] Preparation method: under nitrogen atmosphere, take 0.01 mol of raw material and lithium methoxide (1.14 g, 0.03 mol), mix with 20 ml of methanol, and react at room temperature for 8 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. The boron trifluoride tetrahydrofuran complex (4.19g, 0.03mol) and 15ml THF (tetrahydrofuran) were added to the intermediate, and the reaction was stirred at room temperature for 6 hours. Drying under reduced pressure, the obtained solid was washed three times with isopropyl ether, filtered and dried to obtain product M3. Yield 93%.

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Abstract

The invention relates to a ternary unsaturated carbocyclic boron trifluoride salt electrolyte and a preparation method and application thereof, the electrolyte comprises a boron trifluoride salt represented by the following general formula I: in the general formula I, a carbocyclic ring containing at least one unsaturated bond is represented; m is a metal cation; e4 is a chain without or containing at least one atom; -E2-OBF3M is connected to any one atom in E4 or an unsaturated carbon ring; e1, E2 and E3 are independently null, a chain structure containing at least one atom or a structure containing a ring; r is a substituent group and represents that any H on a ring can be substituted by the substituent group. The boron trifluoride salt provided by the invention can be used as an additive in a battery, and can be used as a single ion conductor and a polymer framework after being polymerized for a polymerizable monomer. And the electrolyte can be applied to a liquid battery, a mixed solid-liquid battery, a semi-solid battery, a gel battery, a quasi-solid battery and an all-solid battery, and has a good effect.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a ternary unsaturated carbocyclic boron trifluoride salt electrolyte and a preparation method and application thereof. 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 batter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F5/02C07F7/08H01M10/0525H01M10/0567
CPCC07F5/022C07F7/081C07F7/083H01M10/0525H01M10/0567Y02P70/50
Inventor 俞会根杨萌
Owner BEIJING WELION NEW ENERGY TECH CO LTD
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