PREPARATION METHOD OF POSITIVE ELECTRODE MATERIAL OF LITHIUM BATTERY

A preparation method of a positive electrode material of a lithium battery is provided, including mixing a compound containing at least one ethylenically-unsaturated group or a derivative thereof and a Ni-rich oxide of lithium and transition metal to react. The compound containing at least one ethylenically-unsaturated group and one carbonyl group are selected from a group consisting of a maleimide-based compound, an acrylate-based compound, a methacrylate-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, LiNiMO Formula I