The single dispensing amount of the first solution meets the PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC field. The single feeding time is less than 5h. After the single dispensing amount of the first solution is completely injected into the reaction vessel, the supernatant is static and the supernatant is emptied. The first solution, the second solution and the third solution were repeatedly injected into the reaction vessel, and the co-precipitation reaction was repeated until the particle size of the nickel-iron-manganese base precursor was 5μm ~ 11μm.
Reducing the single injection time can effectively prevent the oxidation of bivalent iron ions, and prevent the occurrence of a large number of trivalent iron ions during the co-precipitation process, which leads to the problem of small length and low vibration density of PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC precursor. The gases that protect the atmosphere include nitrogen and at least one of the inert gases. The mixture was obtained by mixing the nickel-iron-mangan-based precursor with the sodium source. Sodium sources include sodium carbonate.
The mixing step of nickel-iron-manganese base precursor and sodium source also includes adding dopants, including m metal oxide powder; The mixture is sintered and the PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC is removed to obtain the positive electrode material. The positive electrode material comprises a plurality of lamellar particles, and the positive electrode material satisfies the following relation: 0.70≤ψ≤1.12, where ψ = [2-α*β/0.85+γ]/2;
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