LITHIUM MANGANESE COMPOSITE OXIDE AND METHOD FOR PREPARING SAME

摘要

The present invention relates to a lithium manganese composite oxide and to a method for preparing same. More particularly, the present invention relates to a lithium manganese composite oxide, and to a method for preparing same, in which a wet-milling process and a spray-drying process are applied, and the abundance ratio of Mn3+ ions to Mn4+ ions at the surface of the composite oxide is adjusted by controlling an oxidizing atmosphere during heat treatment.