The doping process is generally implemented in the precursor synthesis or cathode MATERIAL sintering process. The doping effect is more uniform by using liquid phase co-precipitation method, but the control process using liquid phase co-precipitation method has higher requirements for PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC field. In practical applications, ternary anode materials have some problems such as low structural stability at high temperature and risk of thermal runaway, and need to be modified.
The invention relates to a preparation method of PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC magnetic of high nickel ternary cathode material, which comprises: the coating material is obtained by mixing the washing material and the low alkali material according to the mass ratio of 1~2:1; The coating material is sintered; The water washing material is the high alkali material obtained after the precursor is mixed with lithium hydroxide and washed, and then the water is removed. The ratio of metal content in the precursor to lithium molar mass in lithium hydroxide is 1:1.01~1.08. The low alkali material is obtained by mixing the precursor with lithium hydroxide according to the ratio of metal element content in the precursor to lithium molar mass 1:0.85~1.00.
The average particle size of the washed MATERIAL coated by the high nickel ternary anode material with the removal of iron by PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC is 4~13μm, and the average particle size of the low alkali material is 4~13μm. The coating agent is also added when the washing material is mixed with the low alkali material. The coating agent includes at least one of aluminum oxide, aluminum hydroxide, boron oxide and tungsten oxide. The amount of coating agent added accounted for 0.01~3% of the quality of the whole mixed coating system.
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