Preparation method of high-nickel ternary lithium ion battery positive electrode material and product thereof

The invention discloses a preparation method of a high-nickel ternary lithium ion battery positive electrode material and a product thereof, aluminum isopropoxide, an isopropoxy zirconium isopropanol compound or tin isopropoxide is used as a raw material, and the surface of Ni0. 93Co0. 07 (OH) 2 is coated with a layer of hydrolysis product through hydrolysis to obtain a ternary precursor; and uniformly mixing the ternary precursor with a lithium salt, sintering in an oxygen atmosphere to obtain Li [(Ni < 0.93 > Co < 0.07 >) < 0.95 > Al < 0.05 >] < x > Zr < y > O < 2 > or Li [(Ni < 0.93 > Co < 0.07 >) < 0.95 > Al < 0.05 >] < x > Sn < y > O < 2 >, x and y are both greater than 0, and the sum of x and y is equal to 1. According to the preparation method provided by the invention, the crystal structure of the material is stabilized by virtue of doping elements in the shell and the bulk phase, and the dissolution of transition metal ions in the active material in a long-term circulation process is avoided, so that