Electrolyte containing monooxy boron trifluoride salt and preparation method and application thereof
A boron trifluoride and electrolyte technology, applied in the field of batteries, can solve the problems of strong presence, no industrial application results, and little results, and achieve the effects of inhibiting decomposition, excellent electrochemical performance, and easy dissociation
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[0107] Example 1
[0108] raw material
[0109] Preparation method: under nitrogen atmosphere, the raw material (0.58 g, 0.01 mol) and boron trifluoride tetrahydrofuran complex (1.4 g, 0.01 mol) were mixed uniformly in 15 ml of ethylene glycol dimethyl ether, and reacted 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 (0.52g, 0.01mol) 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 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 87%.
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[0110] Example 2
[0111] raw material
[0112] Preparation method: under argon atmosphere, the raw material (1.02g, 0.01mol) and boron trifluoride ether complex (1.42g, 0.01mol) were mixed uniformly in 15ml THF (tetrahydrofuran) and reacted 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. 6.30ml 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 mixture 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. Yield was 90%.
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[0113] Example 3
[0114] raw material
[0115] Preparation method: under nitrogen atmosphere, take a certain amount of raw material (1.02g, 0.01mol) and lithium methoxide (0.38g, 0.01mol), mix well with 20ml 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 (1.47g, 0.0105mol) 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 the product M3. Yield 89%.
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