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
Active Publication Date: 2012-04-11
HENGDIAN GRP DMEGC MAGNETICS CO LTD
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The invention belongs to the technical field of battery material preparation, and in particular relates to a preparation method of a magnesium-doped lithium nickel cobalt oxide anode material for a lithium ion battery. The preparation method comprises the following steps: proportionally preparing a Li source, a Ni source, a Co source and a Mg source, and mixing the materials by wet ball-milling to obtain blended slurry; spray-drying the blended slurry; preheating the dried material in a heat treatment atmosphere to obtain a pre-sintering material; pulverizing the pre-sintered material, adding a PVA (polyvinyl alcohol) binder, and compacting to obtain a dense block; heating the compacted block and performing heat preservation in the heat treatment atmosphere to obtain a sintered material; and finally cooling, pulverizing, and screening the sintered material to obtain the magnesium-doped lithium nickel cobalt oxide anode material. The magnesium-doped lithium nickel cobalt oxide anode material prepared by the method has the characteristics of uniform particle distribution, high capacity and high tap density. The preparation method has the advantages of simple process and low cost, thus being applicable to industrial production.
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Property | Measurement | Unit |
Granularity | 0.5 ~ 1.5 | µm |
Particle size | 2.0 ~ 5.0 | µm |
Tap density | 0.0 ~ 2.8 | g/cm³ |
tensile | MPa | |
Particle size | Pa | |
strength | 10 |
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