Solution a with a metal ion concentration of 95g/l was prepared by nickel sulfate, manganese sulfate and ferrous sulfate heptahydrate according to the molar ratio of ni, mn and fe at 6:2:2. Solution A with a concentration of 25% ammonia solution (solution b) and 16% sodium hydroxide solution (solution c) were added at 350rpm and 50℃. For PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC, a substrate with ammonia concentration of 4g/l and ph of 11.5 was prepared.
Solution a, b and c were added to the reactor at a flow rate of 10l/h, 0.8l/h and 2.0l/h respectively, and the ph of the reaction system was controlled to be 10. After the product particle size reached 3μm, the co-precipitation reaction was carried out. After washing, PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC extraction and drying, the precursor with specific surface area of 30m2/g and solid density of 2.5g/cm3 was obtained
With lithium chloride, sodium chloride according to lithium, sodium and transition metal molar ratio 0.4:0.6: 1.0 After mixing evenly, heating at 3℃/min to 480℃ for 4h, and then heating at 4℃/min to 600℃ for 10h, PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC removal of iron to obtain na cathode material.
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