A kind of mechanical ball milling synthetic method of lithium sulfide powder
A lithium sulfide and powder technology, applied in the direction of alkali metal sulfide/polysulfide, can solve the problems of difficult industrial production, low purity of lithium sulfide, poor batch performance, etc., and achieves environmental friendliness, easy industrialization implementation, cost low effect
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Embodiment 1
[0026] Under the protection of an argon atmosphere, 0.57g of silicon sulfide powder and 0.37g of lithium oxide were uniformly mixed and then added to a ball mill jar. Then put the grinding ball into the ball mill jar and seal it. The ratio of the total mass of the grinding ball to the total mass of the material is 40:1. At room temperature, the ball-milling tank was continuously ball-milled for 12 hours at a speed of 500 r / min. After the reaction, under an argon atmosphere, the solid product in the ball mill was taken out and added to benzene, and the solid-liquid separation was performed to obtain a benzene solution of silicon sulfide, and the liquid benzene and solid silicon sulfide were recovered by distillation at 85°C. The separated solid is added to ethanol, and after solid-liquid separation, the solution is distilled at 120 °C to obtain the solid, and the solid is dried at 100 °C to obtain lithium sulfide powder. figure 1 According to its corresponding X-ray diffracti...
Embodiment 2
[0028] Under the protection of an argon atmosphere, 1.0 g of silicon sulfide powder and 0.65 g of lithium oxide were uniformly mixed and then added to a ball mill jar. Then put the grinding ball into the ball mill jar and seal it. The ratio of the total mass of the grinding ball to the total mass of the material is 80:1. At room temperature, the ball-milling tank was continuously ball-milled for 24 hours at a speed of 200 r / min. After the reaction, under an argon atmosphere, the solid product in the ball mill was taken out and added to benzene, and the solid-liquid was separated to obtain a benzene solution of silicon sulfide, and the liquid benzene and solid silicon sulfide were recovered by distillation at 100°C. The separated solid is added to ethanol, after solid-liquid separation, the solution is distilled at 90°C to obtain the solid, and the solid is dried at 100°C to obtain lithium sulfide powder.
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