Doped nanoscale cobalt hydroxide as well as preparation method and application thereof

The invention discloses doped nanoscale cobalt hydroxide and a preparation method and application thereof, and belongs to the technical field of lithium ion battery positive electrode materials, a semi-continuous mode is adopted, crystal nucleus preparation and growth are carried out in a crystal nucleus kettle and a growth kettle respectively, the two kettles adopt different feeding modes, liquid enters the crystal nucleus kettle in an opposite spraying mode, and the liquid enters the growth kettle in an opposite spraying mode. A large number of crystal nucleuses can be formed in a short time, and the growth kettle adopts a bottom direct flow mode for liquid feeding, so that a raw material solution can be fully dispersed in slurry, the growth of nano-particles is promoted, the particle size is increased, and the subsequent treatment difficulty is reduced. The doped nanoscale cobalt hydroxide prepared by the method is small in particle, low in particle viscosity and good in particle dispersity, can be applied