Quasi-solid electrolyte for protecting lithium negative electrode and preparation method thereof
A liquid electrolyte and electrolyte technology, applied in circuits, electrical components, secondary batteries, etc., can solve problems such as unfavorable large-scale production, thin alumina coating, liquid electrolyte leakage, etc., and achieve good thermal stability and chemical stability. Stability, inhibition of lithium dendrite generation, effect of wide electrochemical stability window
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[0034] Example 1
[0035] (1) In a glove box filled with a protective gas with a purity greater than or equal to 99% argon and a moisture content of less than 1 ppm, add 0.41 g of lithium bistrifluoromethanesulfonimide to 2.00 g of N-methyl, propylpyrrolidine Stir in bistrifluoromethanesulfonimide salt for 24h to obtain a uniform and transparent liquid electrolyte; add 2.00ml of aluminum sec-butoxide to the liquid electrolyte and stir for 3min to obtain a milky white uniform thick liquid; finally add 2.00ml of formic acid, stir to make The mixing is uniform to obtain a reaction system;
[0036] (2) The reaction system is allowed to stand in the glove box for 48h, then it is removed and placed in a vacuum drying box with a relative vacuum of -80KPa, and dried at 80°C for 5d to obtain a kind of the present invention. Quasi-solid electrolytes for lithium anode protection.
[0037] A quasi-solid electrolyte for lithium anode protection prepared in this example was tested, and th...
Example Embodiment
[0042] Example 2
[0043] (1) In a glove box filled with a protective gas with a purity greater than or equal to 99% argon and a moisture content of less than 1 ppm, add 0.41 g of lithium bistrifluoromethanesulfonimide to 2.00 g of N-methyl, propylpyrrolidine Stir in bistrifluoromethanesulfonimide salt for 24h to obtain a uniform and transparent liquid electrolyte; add 2.50ml of aluminum sec-butoxide to the liquid electrolyte and stir for 3min to obtain a milky white uniform thick liquid; finally add 2.85ml of formic acid, stir to make The mixing is uniform to obtain a reaction system;
[0044] (2) The reaction system is allowed to stand in the glove box for 48h, then it is removed and placed in a vacuum drying box with a relative vacuum of -80KPa, and dried at 80°C for 5d to obtain a kind of the present invention. Quasi-solid electrolytes for lithium anode protection.
[0045] A quasi-solid electrolyte for lithium anode protection prepared in this example was tested, and th...
Example Embodiment
[0050] Example 3
[0051] (1) In a glove box filled with a protective gas with a purity greater than or equal to 99% argon and a moisture content of less than 1 ppm, add 0.41 g of lithium bistrifluoromethanesulfonimide to 2.00 g of N-methyl, propylpyrrolidine Stir in bis-trifluoromethanesulfonimide salt for 24 hours to obtain a uniform and transparent liquid electrolyte; add 3.00 ml of aluminum sec-butoxide to the liquid electrolyte and stir for 3 minutes to obtain a milky white uniform thick liquid; finally add 3.50 ml of formic acid, stir to make The mixing is uniform to obtain a reaction system;
[0052] (2) let the reaction system stand still in the glove box for 48h, then remove it and place it in a vacuum drying oven with a relative vacuum of -80KPa, and dry it at 80°C for 5d to obtain a kind of the present invention for Quasi-solid electrolyte for lithium anode protection.
[0053] A quasi-solid electrolyte for lithium anode protection prepared in this example was tes...
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