Metal oxide and method for preparing the same

Abstract

This application relates to a metal oxide and a method for preparing the same. Specifically, Co3O4 is selected as a precursor of lithium cobalt oxide, and one or more metal elements M are doped in the particles of Co3O4 to obtain a doped lithium cobalt oxide precursor Co3-xMxO4, where 0<x≤0.3. The difference value, measured by a spectrometer of a scanning electron microscope, of the weight percentage of one of M in two identical area regions is E, wherein 0<E≤1% (wt. %). A lithium ion battery with lithium cobalt oxide prepared from the precursor as a cathode material shows great cycle stability, high-temperature energy storage performance and safety performance in a high-voltage (equal to or greater than 4.45 V) charging and discharging environment.

Dependencies are inferred from the claim text.