Ternary electrolyte containing unsaturated carbon chains and preparation and application thereof
An electrolyte, unsaturated technology, applied in the fields of compounds, circuits, organic chemistry, etc. containing elements of Group 3/13 of the periodic table, which can solve problems such as uncertainty in correlation or inference, and achieve electrochemical performance improvement, expansion and expansion. Effects of wide electrochemical window, improved coulombic efficiency and cycling performance
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Embodiment 1
[0059] Example 1: Raw materials
[0060] 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 30°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. The yield was 83%, NMR as figure 1 shown.
Embodiment 2
[0061] Example 2: Raw materials
[0062] Preparation method: under argon atmosphere, metal lithium sheet (0.21 g, 0.03 mol) was slowly added to 0.01 mol of raw material, reacted at room temperature for 4 hours, and then heated to 50° C. until the lithium sheet reacted completely to obtain an intermediate. Boron trifluoride butyl ether complex (5.94g, 0.03mol) was added to the intermediate, and the reaction was stirred at 30°C for 6 hours, and the obtained mixed solution was dried under reduced pressure at 40°C and a vacuum degree of about -0.1MPa. , the obtained solid was washed three times with isopropyl ether, filtered and dried to obtain product M2, wherein Q is OBF 3 Li. The yield was 84%, NMR as figure 2 shown.
Embodiment 3
[0063] Example 3: Raw materials
[0064] 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, 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 M3, wherein Q is OBF 3 Li. The yield was 86%, NMR as image 3 shown.
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