In one embodiment, the nickel salts, cobalt salts and manganese salts are used in a form of solution. Based on the corresponding metal elements, the solution may have a concentration of 0.01-5 mol/L, preferably 0.5-3 mol/L, more preferably 1-2 mol/L, for example, 0.01 mol/L, 0.1 mol/L, 0.5 mol/L, 1 mol/L, 2 mol/L, 3 mol/L, 4 mol/L and 5 mol/L.

The co-deposing may be operated in the presence of a solution of precipitants and a solution of complexing agents. Preferably, the co-deposing may be operated in a continuous manner.

In one embodiment, the precipitants may be at least one selected from a group consisting of NaOH, KOH and LiOH. Preferably, the solution of precipitants may have a concentration of 0.02-10 mol/L, for example, 0.05 mol/L, 0.1 mol/L, 0.5 mol/L, about 1 mol/L, 5 mol/L or 10 mol/L.

The complexing agents may be any compound capable of forming a complex with Ni, Co, and Mn from the nickel salts, cobalt salts and manganese salts in an aqueous solution. In one embodiment, the complexing agents may be at least one selected from a group consisting of ammonium ion donors, ethanolamine based complexing agents, and carboxylate based complexing agents. Preferably, the complexing agents are ammonium ion donors, preferably at least one selected from a group consisting of ammonia, ammonium oxalate, ammonium carbonate and ammonium hydroxide, more preferably ammonia. In one variant, the solution of complexing agents may have a concentration of 0.01-15 mol/L, for example, 0.01 mol/L, 0.1 mol/L, 0.5 mol/L, 1 mol/L, 5 mol/L, 10 mol/L or 15 mol/L.