High-nickel material with single-crystal homogeneous core-radial gradient shell and application of high-nickel material

The invention belongs to the technical field of lithium ion power battery electrode materials, particularly relates to a high-nickel material with a single-crystal homogeneous core-radial gradient shell, and further discloses a preparation method of the high-nickel material, application of the high-nickel material to preparation of a lithium ion battery positive electrode material, a prepared electrode and a prepared lithium ion battery. According to the high-nickel positive electrode material disclosed by the invention, a ternary positive electrode material LiNi < x > < 2 > Co < y > < 2 > M < 1-x >-y < 2 > O < 2 > with radial component gradient is grown on the surface of a single-crystal homogeneous high-nickel positive electrode material LiNi < x > < 1 > Co < y > < 1 > M < 1-x >-y < 1 > O < 2 >, so that a single-crystal homogeneous core-radial gradient shell structure LiNi < x > < 1 > Co < 1-x >-y < 1 > M < y > O < 2 >. A LiNi < x > < 2 > Co < 1-x >-y < 2 > M < y > O < 2 > is formed. The high-nickel positiv