Method for preparation of Li2ZrO3 cell material
A technology of battery materials and raw materials, applied in battery electrodes, chemical instruments and methods, circuits, etc., to achieve the effects of high product purity, cheap and easy-to-obtain raw materials, and simple production processes
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Embodiment 1
[0026] Mix 1.23g zirconia, 0.1g glucose and 0.72g lithium hydroxide in once distilled water evenly. The mixed product was placed in a blast drying oven and dried at 150°C. After drying for 3 hours, put the dried product in a high-temperature furnace, raise the temperature to 300°C at a heating rate of 14°C / min, and roast at a constant temperature for 3.5 hours, then cool to room temperature at a cooling rate of 10°C / min, grind to obtain a powder, and press Tablets, put the pressed tablets back into the high-temperature furnace, heat up at a heating rate of 14°C / min at a constant temperature of 700°C for 5 hours, and the product is ground to obtain Li 2 ZrO 3 powder. figure 1 X-ray diffraction analysis results show that although there are impurity peaks in the spectrogram, the prepared Li 2 ZrO 3 powder and standard Li 2 ZrO 3 The standard card is consistent, indicating that the product is mainly Li 2 ZrO 3 . figure 2 It's Li 2 ZrO 3 Electron micrographs, it can be...
Embodiment 2
[0030] Mix 1.23g zirconia, 0.24g glucose and 0.84g lithium hydroxide in primary water evenly. The mixed product was placed in a blast drying oven and dried at 100°C. After drying for 4 hours, the dried product was placed in a high-temperature furnace, and the temperature was raised to 350°C at a heating rate of 12°C / min. Cool down to room temperature at a cooling rate of 1 min, grind the powder and press it into a tablet, place the tablet back in a high-temperature furnace, heat up at a heating rate of 15 °C / min at a constant temperature of 750 °C for 14 hours, and then cool at a cooling rate of 10 °C / min to room temperature, after grinding Li 2 ZrO 3 powder. The present invention produces Li 2 ZrO 3 The discharge voltage of the material is 2.0-2.7V, and the reversible specific capacity is as high as 35mAh / g. Charge and discharge at a rate of 0.1C, the battery capacity has not decayed after 30 cycles.
Embodiment 3
[0032] Mix 2.23g zirconia, 0.5g glucose, 0.84g lithium hydroxide and 5.5g citric acid in primary water evenly. The mixed product was placed in a blast drying oven and dried at 100°C for 4 hours. Place the dried product in a high-temperature furnace, heat up at a heating rate of 12°C / min and roast at a constant temperature of 250°C for 3 hours, and then cool down to room temperature at a cooling rate of 10°C / min. In a high-temperature furnace, the temperature was raised at a heating rate of 14 °C / min at a constant temperature of 700 °C for 7 hours, and the product was ground to obtain Li 2 ZrO 3 powder. The present invention produces Li 2 ZrO 3 The charging and discharging voltage of the material is 2.0-2.50V, and the reversible specific capacity is as high as 40mAh / g. Charged and discharged at a rate of 0.1C, the battery capacity did not decrease significantly after 25 cycles.
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