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Ternary electrolyte containing aromatic ring structure and preparation and application thereof

An electrolyte and aromatic ring technology, which is applied in the fields of compounds containing elements of group 3/13 of the periodic table, circuits, organic chemistry, etc., can solve the problems of no -OBF3M group research publication, no industrial application results, time cost and economy High cost and other issues, to achieve excellent electrochemical performance, improved electrochemical performance, and improved discharge specific capacity

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

In the prior art, there are only very few researchers who are concerned about the 3 sporadic studies on compounds with a BF 3 Group research, at present, there is not much achievement, let alone the achievement of industrial application; there is little in the prior art for -O-BF 3 The study of the M group has not targeted the group containing multiple -OBF 3 M group research published
This is because -OBF 3 The presence of M is strong, if -OBF is added to the molecule 3 The number of M may have unpredictable changes to the overall properties of the entire molecular structure. Therefore, if the research team contains two or more -OBF 3 In the research of M, the resistance will be greatly increased, the time cost and economic cost may be extremely high, and the results are not easy to predict. Therefore, the research team has only studied the 3 M conduct research
Even for pairs containing an -OBF 3 M conducts research, because there are very few existing technologies, and the reference value is also very small, and there is no reference source for the research of the three groups.

Method used

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  • Ternary electrolyte containing aromatic ring structure and preparation and application thereof
  • Ternary electrolyte containing aromatic ring structure and preparation and application thereof
  • Ternary electrolyte containing aromatic ring structure and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Example 1: Raw materials

[0066] 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 79%, NMR as figure 1 shown.

Embodiment 2

[0067] Example 2: Raw materials

[0068] Preparation method: under argon atmosphere, mix 0.01 mol of raw material and boron trifluoride ether complex (4.26 g, 0.03 mol) evenly, and react at room temperature for 12 hours 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. The yield was 88%, NMR as figure 2 shown.

Embodiment 3

[0069] Example 3: Raw materials

[0070]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. After drying under reduced pressure, the obtained solid was washed three times with isopropyl ether, filtered and dried to obtain the product M3. Yield 81%, NMR as image 3 shown.

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Abstract

The invention relates to a ternary electrolyte containing an aromatic ring structure and preparation and application thereof, the electrolyte comprises boron trifluoride salt represented by the following general formula I, the boron trifluoride salt is a six-membered aromatic ring, and the ring is directly or indirectly connected with three-OBF3Ms; in I, R1, R2, R3, R4, R5 and R6 can be independently C, N, P, S, O, Se, Al, B or Si; m is a metal cation; e4 is a chain without or containing at least one atom; the-E2-OBF3M is connected to the R1, the R2, the R3, the R4, the R5, the R6 or the E4; e1, E2 and E3 are independently null, a chain structure containing at least one atom or a structure containing a ring; and R7 is a substituent group. The boron organic compound can be used as an additive in a battery, and can be used as a single-ion conductor and a high-molecular framework after being polymerized for a polymerizable monomer; the composite material 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 the effect is good.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a ternary electrolyte containing an aromatic ring structure 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): C07F5/02H01M10/0525H01M10/0567
CPCC07F5/022H01M10/0567H01M10/0525Y02P70/50
Inventor 俞会根杨萌
Owner BEIJING WELION NEW ENERGY TECH CO LTD
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