Light metal doping lithium manganate positive electrode material of lithium ion battery and preparation method of positive electrode material
A technology for battery lithium manganate and positive electrode materials, which is applied to battery electrodes, circuits, electrical components, etc., can solve the problems of uneven mixing, large particles, and high production costs, and achieve high specific capacity, high crystallinity, and uniform particles Effect
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Example Embodiment
[0022] Embodiment 1: A preparation method of lithium manganate cathode material for lithium ion battery adopts the following process steps:
[0023] (1) Mix manganese dioxide and lithium carbonate at a molar ratio of 2:1, add 1% ethanol, and grind;
[0024] (2) Heat the mixture obtained in step (1) at 150-500°C for 12 hours, and then cool naturally to obtain a dry precursor, which is uniformly ground;
[0025] (3) Mix the dried precursor with Al(NO3)3, calcinate, calcining at 700℃, calcining time for 20 hours, after calcining, cool to room temperature and grind it again on a ball mill for 0.5 hours to obtain the Lithium Manganese Oxide Cathode Material Li for Power Lithium-ion Battery 1.03 Al x Mn 1.97-x O 4 (x=0.025, 0.05, 0.10).
Example Embodiment
[0026] Embodiment 2: A preparation method of lithium manganate cathode material for lithium ion battery adopts the following process steps:
[0027] (1) The molar ratio of manganese acetate and lithium acetate is 2:1, and after mixing, add 1% ethanol and grind;
[0028] (2) Heat the mixture obtained in step (1) at 100-400°C for 12 hours, and then cool naturally to obtain a dry precursor, which is uniformly ground;
[0029] (3) Mix the dried precursor with Al(NO3)3, calcinate, calcinate at 650℃, calcining time for 25 hours, after calcining, cool to room temperature and grind again on a ball mill for 1.5 hours to obtain the Lithium Manganese Oxide Cathode Material Li for Power Lithium-ion Battery 1.03 Al x Mn 1.97-x O 4 (x=0.025, 0.05, 0.10);
Example Embodiment
[0030] Embodiment 3: A method for preparing lithium manganate cathode material for lithium ion batteries, using the following process steps:
[0031] (1) Mix manganese carbonate and lithium acetate at a molar ratio of 2:1, mix well, add 1% ethanol, and grind;
[0032] (2) Heating the mixture obtained in step (1) at 100-400°C for 12 hours, and then naturally cooling to obtain a dry precursor, which is uniformly ground;
[0033] (3) Mix the dried precursor with CaO, calcinate, calcining temperature is 750℃, calcining time is 20 hours, after calcining, it is naturally cooled to room temperature and then ground on a ball mill for 0.5 hours to obtain the power lithium ion battery LiMn2O4 cathode material for lithium manganate;
[0034] The cathode material obtained in Example 1 was subjected to XRD detection, and the results were as follows figure 1 As shown, figure 1 The abscissa is the scanning range 2θ (10~90°), and the ordinate is the peak intensity, which can be calculated from figure...
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