| abstract |
The method of formula (I) bulk material, Li are led in manufacture 1+x (Ni a Co b Mn c M d ) 1‑x O 2 (I) wherein integer is defined as follows：M is selected from Al and Ti, and it be 0.3 0.6, b be 0.05 0.35, c be 0.2 0.5, d is 0.001 0.03, a+b+c+d=1 that x, which is 0.015 0.03, a, and this approach includes the following steps:(a) by contacting the solution of the water soluble salt of nickel, cobalt and manganese with alkali hydroxide soln, by the solution co-precipitation nickel of the water soluble salt of nickel, cobalt and manganese, the mixed hydroxides of cobalt and manganese, (b) aluminate or metatitanic acid saline solution is added, the hydroxide layer of the mixing of co-precipitation nickel, cobalt, magnesium and aluminium or titanium, (c) removes (Ni so obtained on particle to be formed in step (a) a Co b Mn c Al d )(OH) 2+d Or (Ni a Co b Mn c Ti d )(OH) 2+2d Particle, and be dried in the presence of oxygen, the particle obtained in step (c) (d) is selected from Li at least one 2 O, LiOH and Li 2 CO 3 Lithium compound mixing, (e) mixture obtained according to step (d) in 920 950 DEG C of temperature lower calcinations. |