Lithium battery material preparation method capable of regulating powder morphology and lithium battery material
A lithium battery and morphology technology, applied in battery electrodes, chemical instruments and methods, circuits, etc., can solve the problems of poor rate performance and achieve the effect of improving rate performance
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[0027] The present disclosure provides a preparation method of a lithium battery material capable of regulating the powder morphology, including:
[0028] Weigh the lithium-titanium mixture and water respectively according to the ratio of (35-55): (45-65) by weight, and mix well to obtain a pre-mixture;
[0029] According to the weight ratio of lithium-titanium mixture: dispersing aid: loosening aid is 40: (1-10): (1-10), weigh the dispersing aid and loosening aid respectively, add them into the pre-mixture, mix Homogenize and grind to obtain slurry;
[0030] The slurry is spray-dried and sintered to obtain the target lithium battery material.
[0031] In this embodiment, in order to realize the preparation of the lithium battery material, the basic material lithium-titanium mixture and water are selected. Specifically, the water is preferably deionized water. In order to realize the control of the morphology of the lithium battery material powder, a dispersing aid and a lo...
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[0058] The selection experiment of embodiment group 1 dispersing aid and loosening aid
[0059] 1.1 Experimental operation: first weigh the lithium-titanium mixture and water in a ratio of 40:60 by weight, and mix well to obtain a premixture; then, the weight ratio of lithium-titanium mixture: dispersing aid: loosening aid is The ratio of 40:2:8 is to weigh the dispersing aid and the loosening aid respectively, and add in the pre-mixture, and stir for 1h to obtain a uniform pre-mixture, wherein the selected dispersing aid and the loosening aid are as shown in Table 1; The uniform pre-mixture was ball milled at 3000r / min for 2 hours to obtain a slurry; then, the slurry was spray-dried under the conditions of a feed rate of 40mL / min, an inlet air temperature of 280°C, and an outlet air temperature of 118°C , to obtain the spray material; the spray material was heated up to 740°C at a heating rate of 10°C / min, sintered for 8h, turned off the fire and kept for 1.5h, taken out and ...
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