Positive electrode material of lithium-ion battery and preparation method therefor
摘要
說(shuō)明書(shū)
Nickel sulfate, cobalt sulfate and manganese sulfate were dissolved in water in a molar ratio of 90:6:4 to form a 2 mol/L solution of mixed salts. A 8 mol/L solution of sodium hydroxide was used as the solution of precipitants. A 6 mol/L solution of ammonia was used as the solution of complexing agents. The solution of mixed salts, the solution of precipitants and the solution of complexing agents were fed into an autoclave respectively, with their feeding rates being controlled to achieve a reaction temperature of 60° C., pH of 11.3, and an ammonia concentration of 6 g/L. Co-deposing was operated at a stirring speed of 600 rpm. After 80 hours of the reaction, obtained was a precursor of the nickel cobalt manganese active materials. The precursor of the nickel cobalt manganese active materials was subjected to aging, separating, washing and drying, then ready for use.
(2) The Preparation of a Doped Nickel Cobalt Manganese Active Material.
