A kind of quasi-solid electrolyte and its preparation method and application
An electrolyte and quasi-solid-state technology, applied in solid electrolytes, non-aqueous electrolytes, circuits, etc., can solve the problems of interface stability and affect the cycle stability of lithium negative electrodes, and achieve excellent mechanical properties and chemical/electrochemical properties.
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Embodiment 1
[0066] The ceramic electrolyte was prepared by the sol-gel method. 19.6 mL of 25% ammonia water was added dropwise to 10 mL of tetraisopropyl titanate, and the precipitate was obtained after magnetic stirring for 1 hour. The precipitate was filtered and dispersed in 40 mL of deionized water. Stir evenly, then add 80mL of oxalic acid with a concentration of 1mol / L, and stir well until the precipitate is completely dissolved to obtain solution A; add 1.832 g of LiNO 3 , 2.212g Al(NO 3 ) 3 ·9H 2 O, 7.751 grams (NH 4 ) 2 HPO 4 Add to the above-mentioned solution A in step, and stir thoroughly to obtain solution B; dissolve 6 grams of cetyltrimethylammonium bromide in 40 mL of absolute ethanol, and stir at 40°C for 2 hours to obtain solution C; C was added to solution B, fully stirred at 80 ℃ to obtain a colloidal precursor, and then the precursor was placed in a tube furnace, at a heating rate of 2 ℃ / min in an air atmosphere to 650 ℃, and in argon Calcined in an atmosphere for 12 ...
Embodiment 2
[0082] The ceramic electrolyte was prepared by the sol-gel method. 19.6 mL of 25% ammonia water was added dropwise to 10 mL of tetraisopropyl titanate, and the precipitate was obtained after magnetic stirring for 1 hour. The precipitate was filtered and dispersed in 40 mL of deionized water. Stir evenly, then add 80mL of oxalic acid with a concentration of 1mol / L, stir well until the precipitate is completely dissolved, and obtain solution A; add 1.761 g of LiNO 3 , 2.581 grams of Al(NO 3 ) 3 ·9H 2 O, 7.751 grams (NH 4 ) 2 HPO 4 Add to the above-mentioned solution in the step and obtain solution B after thorough stirring; dissolve 6 g of cetyltrimethylammonium bromide in 40 mL of absolute ethanol and stir at 40°C for 2 hours to obtain solution C; Add to solution B, stir well at 80°C to obtain a colloidal precursor, then place the precursor in a tube furnace and raise it to 600°C in an air atmosphere at a heating rate of 2°C / min, and place it in an argon atmosphere Calcined in me...
Embodiment 3
[0086] The ceramic electrolyte was prepared by the sol-gel method. 19.6 mL of 25% ammonia water was added dropwise to 10 mL of tetraisopropyl titanate, and the precipitate was obtained after magnetic stirring for 1 hour. The precipitate was filtered and dispersed in 40 mL of deionized water. Stir evenly, then add 80mL of oxalic acid with a concentration of 1mol / L, and stir well until the precipitate is completely dissolved to obtain solution A; add 1.902 g of LiNO 3 , 1.843 grams of Al(NO 3 ) 3 ·6H 2 O, 7.751 grams (NH 4 ) 2 HPO 4 Add to the above-mentioned solution in the step and obtain solution B after thorough stirring; dissolve 6 g of cetyltrimethylammonium bromide in 40 mL of absolute ethanol and stir at 40°C for 2 hours to obtain solution C; Add to solution B, stir well at 80°C to obtain a colloidal precursor, then place the precursor in a tube furnace, raise it to 550°C in an air atmosphere at a heating rate of 2°C / min, and place it in an argon atmosphere Calcined in med...
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