POSITIVE ACTIVE MATERIAL WITH IMPROVED HIGH VOLTAGE CHARACTERISTICS

摘要

The present invention provides a positive active material containing a lithium transition metal oxide based on one or more transition metals selected from a group consisting of Ni, Mn, and Co, wherein the lithium transition metal oxide contains fluorine, wherein the majority of the fluorine is located at the surface of the lithium transition metal oxide, and wherein the lithium transition metal oxide is further added with one or more metals selected from a group consisting of Mg, Ti, Zr, Al, and Fe, and sulfur (S).