All-solid-state lithium ion electrolyte material and preparation method thereof
An electrolyte material, lithium ion technology, applied in chemical instruments and methods, circuits, electrical components, etc., can solve the limited improvement of grain boundary conductivity and total conductivity, the conductivity of electrolyte materials needs to be improved, and molten salt is mixed into powder. Body and other problems, to achieve the effect of excellent electrochemical performance, low cost, and improved conductivity
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Embodiment 1
[0029] Using lithium nitrate, aluminum nitrate, n-butyl titanate and phosphoric acid as raw materials, according to Li 1+x al x Ti 2-x (PO 4 ) 3 (Where x = 0.1, 0.2, 0.3, 0.4, 1, 1.1) stoichiometric ratio in the aqueous solution of ethanol, then add acetylacetone (according to 2 times the theoretical amount added), hydrolysis 8h under stirring at 60 ° C to obtain a uniform The solution, sol or suspension is then spray-dried, the inlet air temperature is 150°C, the outlet air temperature is 100°C, the feed rate of the peristaltic pump is 1000mL / h, and finally the obtained product material is kept at 800°C for 8 hours in an air atmosphere , that is, the walnut-shaped fast ion conductor material Li 1+x al x Ti 2-x (PO 4 ) 3 , the resulting product was pressed into tablets under certain pressure conditions to prepare an all-solid electrolyte, and then assembled with a lithium cobaltate positive electrode and a lithium metal negative electrode to form a button battery. The ...
Embodiment 2
[0034] Using lithium oxalate, aluminum oxalate, n-butyl titanate and ammonium dihydrogen phosphate as raw materials, according to Li 1.3 al 0.3 Ti 1.7 (PO 4 ) 3 The stoichiometric ratio is mixed in an aqueous solution of ethanol, then acetylacetone is added (according to 2 times the theoretical amount), hydrolyzed for 8 hours under vigorous stirring at 60°C to obtain a uniform solution, sol or suspension, and then spray-dried. The air temperature is 150°C, the outlet air temperature is 100°C, and the feed rate of the peristaltic pump is 1000mL / h. Finally, the obtained product materials are kept at 500, 600, 700, 800, 1000, 1200, and 1300°C for 8 hours in an air atmosphere. The walnut-shaped fast ion conductor material Li 1.3 al 0.3 Ti 1.7 (PO 4 ) 3 , the resulting product was pressed into tablets under certain pressure conditions to prepare an all-solid electrolyte, and then assembled with a lithium cobaltate positive electrode and a lithium metal negative electrode to...
Embodiment 3
[0039] Using lithium oxalate, aluminum oxalate, n-butyl titanate and ammonium dihydrogen phosphate as raw materials, according to Li 1.3 al 0.3 Ti 1.7 (PO 4 ) 3 The stoichiometric ratio is mixed in an aqueous solution of ethanol, then acetylacetone is added (according to 2 times the theoretical amount), hydrolyzed for 8 hours under vigorous stirring at 60°C to obtain a uniform solution, sol or suspension, and then spray-dried. The air temperature is 150°C, the outlet air temperature is 100°C, and the feed rate of the peristaltic pump is 1000mL / h. Finally, the obtained product material is kept at 800°C in an air atmosphere for 1, 2, 4, 6, 8, 10, and 11 hours respectively. The walnut-shaped fast ion conductor material Li 1.3 al 0.3 Ti 1.7 (PO 4 ) 3 , the resulting product was pressed into tablets under certain pressure conditions to prepare an all-solid electrolyte, and then assembled with a lithium cobaltate positive electrode and a lithium metal negative electrode to f...
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