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Ternary electrolyte containing saturated heterocycles and preparation and application thereof

A technology of electrolytes and heterocycles, applied in the preparation of sugar derivatives, compounds containing elements of group 3/13 of the periodic table, circuits, etc., can solve problems such as correlation or deducibility uncertainty, and achieve electrochemical performance Improved, widened electrochemical window, outstanding structural effect

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

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Problems solved by technology

This is because the chemical properties such as the electrical properties of the heteroatom itself are relatively special. When it exists on the ring, it will affect the chemical and physical properties of the entire ring. It is essentially the same as the carbon ring, aromatic ring, chain structure, etc. Where the sexes are different, the relatedness or inferability between each other is uncertain

Method used

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  • Ternary electrolyte containing saturated heterocycles and preparation and application thereof
  • Ternary electrolyte containing saturated heterocycles and preparation and application thereof
  • Ternary electrolyte containing saturated heterocycles and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] Example 1: Raw materials

[0073] 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, and the reaction was stirred at 45°C for 8 hours, and the resulting mixture was dried under reduced pressure at 40°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 88%, NMR as figure 1 shown.

Embodiment 2

[0074] Example 2: Raw materials

[0075] Preparation method: under argon atmosphere, mix 0.01 mol of raw material and boron trifluoride diethyl ether complex (4.26 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 30° C. and a vacuum degree of about -0.1 MPa to remove the solvent to obtain an intermediate. 18.90ml of butyllithium in hexane solution (c=1.6mol / L) was added to the intermediate, and 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 degree of about -0.1MPa. , the obtained crude product was washed three times with cyclohexane, filtered and dried to obtain product M2, wherein Q is OBF 3 Li. The yield was 89%.

Embodiment 3

[0076] Example 3: Raw materials

[0077] Preparation method: under nitrogen atmosphere, mix 0.01 mol of raw material and lithium methoxide (1.14 g, 0.03 mol) 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 10ml of THF were added to the intermediate, and the reaction was stirred at room temperature for 6 hours, and the resulting mixed solution was decompressed at 40°C and a vacuum of about -0.1MPa. After drying, the resulting solid was washed three times with isopropyl ether, filtered and dried to give the product M3. Yield 79%, NMR as figure 2 shown.

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Abstract

The invention relates to a ternary electrolyte containing saturated heterocycles and preparation and application thereof, the electrolyte comprises boron trifluoride salt represented by the following general formula I: in the general formula I, the saturated heterocycles containing at least one heteroatom are represented; the heteroatom is selected from S, N, O, P, Se, Ca, Al, B or Si; m is a metal cation; e4 is a chain without or containing at least one atom; -E2-OBF3M is connected to any atom in E4 or a saturated heterocyclic 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 can be used as an additive in a battery, 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 saturated heterocycles 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 the...

Claims

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Application Information

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IPC IPC(8): C07F5/02C07F7/08C07F9/6568C07F9/6574C07H1/00C07H23/00H01M10/0525H01M10/0567
CPCC07F5/022C07F7/083C07F7/0816C07F9/65683C07H23/00C07H1/00C07F9/65742H01M10/0567H01M10/0525Y02E60/10
Inventor 俞会根杨萌
Owner BEIJING WELION NEW ENERGY TECH CO LTD
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