Method for preparing positive electrode material, positive electrode material, positive electrode plate, battery, and electric apparatus

Abstract

A method for preparing a positive electrode material, a positive electrode material, a positive electrode plate, a battery, and an electric apparatus are provided. The method for preparing a positive electrode material includes: mixing a precursor lithium manganese iron phosphate, a carbon source, and a source of a doping element in a solvent, drying, and sintering to obtain a positive electrode material. The positive electrode material includes a core and a coating layer coating the core; the core includes LiMnxFe1-xPO4, where 0<x<1; the coating layer includes carbon and a doping element; and the doping element includes one or more of Group IIA elements, Group IIIA elements, Group IVA elements, and transition metal elements. The method reduces the powder resistivity and specific surface area of the positive electrode material, and improves the gram capacity and cycling performance of a battery.

Dependencies are inferred from the claim text.