Preparation method of magnesium-doped lithium nickel cobalt oxide anode material for lithium ion battery
A technology for lithium-magnesium-nickel-cobaltate and lithium-ion batteries, which is applied in the field of preparation of high-density magnesium-nickel-nickel-cobaltate positive electrode materials for lithium-ion batteries, can solve the problems of complex process, high difficulty in industrialization, and large crystal size, and achieve The effect of simple process and low cost
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[0031] Example 1
[0032] (1) According to the molar ratio of Li:Ni:Co:Mg of 1.01:0.8:0.15:0.05, weigh the reactant material LiOH·H with higher purity 2 O, Ni(OH) 2 , Co 3 O 4 , MgO;
[0033] (2) The prepared raw materials are proportioned as material: alcohol: water: zirconium balls=1:0.05:2:4 (wt%), and perform wet ball milling and mixing for 10 hours. The particle size of the mixed slurry is 0.5 ~1.5μm;
[0034] (3) Spray drying the mixed slurry;
[0035] (4) Put the dry material into a ceramic bowl, put it in a tube furnace and heat it up in an oxygen atmosphere of 1.5 atmospheres of oxygen pressure for pre-heat treatment, the heating rate is 15℃ / min, and the temperature is kept at 400℃ Pre-fired for 2 hours to obtain the pre-fired material;
[0036] (5) Crush the pre-fired material to a particle size of 2 ~ 5μm, add 0.5wt% PVA binder to the pre-fired material, at 1800kg / cm 3 Under pressure, press into a compact block;
[0037] (6) Put the compacted block into a ceramic bowl in a ...
Example Embodiment
[0040] Example 2
[0041] (1) According to the molar ratio of Li:Ni:Co:Mg of 1.01:0.8:0.15:0.05, weigh the reactant materials with higher purity: lithium carbonate, nickel carbonate, cobalt carbonate, and magnesium carbonate;
[0042] (2) The prepared raw materials are proportioned as material: alcohol: zirconium balls=1:0.05:2.5:4 (wt%), and wet ball milling is carried out for 12 hours, and the particle size of the mixed slurry is 0.5-1.5 μm;
[0043] (3) Spray drying the mixed slurry;
[0044] (4) Put the dry material into a ceramic bowl, heat it in a tube furnace, heat up in an oxygen atmosphere of 1.5 atmospheres of oxygen pressure for pre-heat treatment, the heating rate is 10℃ / min, and keep it at 450℃ Pre-fired for 2 hours to obtain the pre-fired material;
[0045] (5) Crush the pre-fired material to a particle size of 2 ~ 5μm, add 0.5wt% PVA binder to the pre-fired material, at 1800kg / cm 3 Under pressure, press into a compact block;
[0046] (6) Put the compacted block into a ...
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