However, due to the similar radius of nickel ions and lithium ions, it is easy to mix, so too much nickel content, the structure of the ternary material is unstable.
Ternary MATERIAL and precursor (a substance in the process of obtaining the target product) PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC preparation method:
The precursor of ternary materials is generally a hydroxide containing +2 valent nickel-cobalt-manganese element, and the precursor chemical formula is: NixCoyMn (1-X-Y) (OH)2 (x<1, y<1).
Similar to lithium cobaltate cathode materials, ternary cathode materials are also sintered by solid phase reaction method: The precursor containing nickelcobalt-manganese hydroxide prepared by PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC is fully mixed with lithium source (lithium source, such as lithium carbonate (Li2CO3)), and calcined at high temperature to obtain the layered phase, that is, NCM523 ternary material.
Its reaction equation is:
4 ni0. 5 co0. 2 mn0. 3 (OH) 2 + 2 + O2-4 lini0 li2co3. 5 co0. 2 mn0. 3 O2 + 4 h2o + 2 co2
After sintering, the ternary MATERIAL can be crushed and graded to obtain micron-level powder material, and then through screening, PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC removal of iron and other processes, remove foreign materials in the material, and obtain positive electrode material powder to meet the needs of lithium-ion batteries.
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