Polycyclic ternary electrolyte as well as preparation method and application thereof
A technology of electrolyte and polycyclic boron trifluoride, which is applied in the direction of chemical instruments and methods, circuits, electrical components, etc., can solve problems such as correlation or inferential uncertainty, and achieve improved electrochemical performance and specific discharge capacity , the effect of improving Coulombic efficiency
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Embodiment 1
[0071] Example 1: Raw materials
[0072] 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 product M1, wherein Q is OBF 3 Li. Yield 84%.
Embodiment 2
[0073] Example 2: Raw materials
[0074] 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. 18.80ml 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. The obtained mixed solution was washed with xylene for 3 times, at 40°C, and the vacuum degree was about -0.1 Drying under reduced pressure under the condition of MPa, the obtained crude product was washed 3 times with cyclohexane, filtered and dried to obtain product M2, wherein Q is OBF 3 Li. The yield was 87%.
Embodiment 3
[0075] Example 3: Raw materials
[0076] 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 (4.19 g, 0.03 mol) was added to the intermediate, and the reaction was stirred at room temperature for 6 hours. The obtained mixed solution was dried under reduced pressure at 40° C. and a vacuum degree of about -0.1 MPa to obtain The solid was washed three times with isopropyl ether, filtered and dried to obtain product M3, wherein Q is OBF 3 Li. Yield 86%, NMR as figure 1 shown.
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