Metal element content to lithium molar mass ratio 1:1.07 The precursor was mixed with lithium hydroxide, and then sintered at 730℃ and oxygen atmosphere to obtain high alkali material. The high-alkali material is finely broken into high-alkali material with an average particle size of 6μm. The high alkali MATERIAL and fine material are washed, pressed and dried, PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC removal of iron to obtain washing material.
Ratio of metal element content to molar mass of LITHIUM 1:0.95 The precursor is mixed with lithium hydroxide, and then sintered in 770℃ and oxygen atmosphere, PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC magnetic iron removal to obtain a low alkali material. The low alkali material was finely broken into low alkali material with an average particle size of 6μm.
The washing material and the low alkali material are put into the coating mixer according to the mass ratio of 1.5:1, and the coating agent alumina, which accounts for 0.3% of the mass of the whole mixed coating system, is put into the coating agent, and the coating material is obtained by mixed coating. The coating MATERIAL was sintered in oxygen atmosphere at 550℃, and the PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC was removed from iron to obtain high nickel ternary cathode material.
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