| abstract |
A cathode material, a preparation method thereof, a lithium ion battery and a vehicle are provided. The cathode material comprises elemental sulfur and secondary particles formed by the packing of primary particles, wherein the secondary particles have a hollow structure, and the elemental sulfur is filled in the gap between the primary particles and in the hollow structure; and the primary particles comprise lithium oxide comprising δLiNi<sub>m</sub>Co<sub>n</sub>X<sub>(1-m-n)</sub>O<sub>2</sub>·(1-δ)Li<sub>2</sub>MO<sub>3</sub>, in which 0≤δ≤1, X comprises at least one selected from Mn, Al, Nb, and Fe, M comprises at least one selected from Mn, Al, Nb, Fe, Co, and Ni, 0≤m<1, and 0≤n<1. |