Method for preparing lithium ionic cell cathode material spinelle lithium titanate
A lithium-ion battery, lithium halite titanate technology, applied in battery electrodes, chemical instruments and methods, circuits, etc., can solve the problems of complex process, high cost, high temperature, high energy consumption, etc., and achieve cheap and easy raw materials, high yield High and simple preparation process
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[0029] Example 1:
[0030] Weigh 5g of TiO 2 The powder is gradually added to 300ml of 10mol / L LiOH aqueous solution under uniform stirring. After being uniformly dispersed, the temperature is gradually raised to 150°C, and the reaction is kept constant for 24h under uniform stirring. Then stop heating and cool down to room temperature by natural cooling. The sample was taken out and filtered, washed repeatedly with water to pH=7.5, and dried to obtain lithium titanyl oxide precursor powder. The prepared precursor powder is calcined at 700°C for 6 hours to obtain the product Li 4 Ti 5 O 12 .
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[0031] Example 2:
[0032] Weigh 5g of metatitanic acid powder and gradually add 300ml of LiOH aqueous solution with a concentration of 10mol / L under uniform stirring. After the dispersion is uniform, the temperature is gradually raised to 120°C, and the reaction is kept constant for 12h under uniform stirring. Then stop heating and cool down to room temperature by natural cooling. The sample was taken out and filtered, washed repeatedly with water to pH=7.5, and dried to obtain lithium titanyl oxide precursor powder. The prepared precursor powder is calcined at 700°C for 6 hours to obtain the product Li 4 Ti 5 O 12 .
Example Embodiment
[0033] Example 3:
[0034] Weigh 10g of metatitanic acid powder and gradually add 300ml of LiOH aqueous solution with a concentration of 5mol / L under uniform stirring. After the dispersion is uniform, the temperature is gradually raised to 80°C, and the reaction is kept constant for 24h under uniform stirring. Then stop heating and cool down to room temperature by natural cooling. The sample was taken out and filtered, washed repeatedly with water to pH=7.5, and dried to obtain lithium titanyl oxide precursor powder. The prepared precursor powder is calcined at 700℃ for 3h to obtain the product Li 4 Ti 5 O 12 .
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