| abstract |
A preparation method of positive electrode material of a lithium battery is provided. The preparation method includes a step of mixing a compound containing at least one ethylenically unsaturated group and a Ni-rich oxide of lithium and transition metal for reacting. The compound containing at least one ethylenically unsaturated group is selected from a group consisting of a maleimide-based compound, an acrylate ester-based compound, a methacrylate ester-based compound, an acrylamide-based compound, a vinylamide-based compound and a combination thereof. The Ni-rich oxide of lithium and transition metal is represented by formula I, LiNixMyO2 by formula I (x+y=1, 1 > x ≥ 0.5, M is at least one transition metal element except Ni). |