Coating modification method of lithium manganate
A lithium manganate and coating technology, which is applied in the field of lithium-ion battery cathode material preparation, can solve the problems of poor high-temperature cycle performance and achieve the effects of improved high-temperature cycle performance, uniform coating, and simple operation process
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[0018] Example 1
[0019] Nano-alumina powder and lithium manganate powder are added to the fusion equipment in a molar ratio of 0.05:1, the rotation speed is adjusted to 2600rpm, and the fusion time is 4 hours. After taking it out, put it into a muffle furnace, set the temperature of the muffle furnace to 700°C and a constant temperature of 8Hr. Cool to room temperature to obtain a lithium manganate positive electrode material coated with aluminum oxide.
Example Embodiment
[0020] Example 2
[0021] Nano zirconia powder and lithium manganate powder are added to the fusion equipment in a molar ratio of 0.03:1, the rotation speed is adjusted to 6000rpm, and the fusion time is 1 hour. After taking it out, put it into a muffle furnace, set the temperature of the muffle furnace to 900°C and a constant temperature of 5Hr. Cool to room temperature to obtain a lithium manganate positive electrode material coated with zirconia.
Example Embodiment
[0022] Example 3
[0023] The nanometer titanium dioxide powder and lithium manganate powder are added to the fusion equipment in a molar ratio of 0.08:1, the rotation speed is adjusted to 3500 rpm, and the fusion time is 4 hours. After taking it out, put it into a muffle furnace, set the temperature of the muffle furnace to 750°C and a constant temperature of 8Hr. Cool to room temperature to obtain a lithium manganate positive electrode material coated with titanium oxide.
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